The detail mapping and logging of the Ibese area within the Dahomey Basin has revealed the total thickness of the limestone to range between 12.0 m to 15.0 m. This study is based on qualitative lithologic, spectrochemical analyses via X-ray fluorescence and petrographic indices to understand the lithofacie, chemistry, viability of the sequences and depositional environment. This consists of milky to grey and nodular to massive fossiliferous limestone units while the sand content increases with depth. The composition of the major oxides in the thirty-seven (37) samples from six exploratory wells revealed that CaO (51% - 56%), SiO2 (2.6% - 10.56%), Fe2O3 (0.33% - 0.94%), MgO (0.78% - 1.02% and Al2O3 (0.72% - 0.98%) were the most abundant elements. The trend of the geochemical indices show increase in the percentage composition of CaO, and MgO down the sequences with high values which defined the depth of diagenetic re-distribution. The percentage composition of Al2O3, Fe2O3 and K2O are significant indicating continental influence during diagenesis and diverse depositional episodes. The three different microfacies recognized based on depositional texture are shelly biomicrite, shelly biosparmicrite and alga biosparmicrite. The predominance of micrite as the cementing matrix revealed that the rock was deposited in a quiet shallow inner shelf environment occasioned by storm waves.
The Dahomey Basin is an arcuate extensive basin located within the Gulf of Guinea, West Africa (
Height in Ghana through Togo, Republic of Benin and then terminates at the Okitipupa ridge, south western Nigeria separating it from the Niger Delta. It runs parallel to the coastal states of these countries covering a total area of approximately 49,209 km2 [
Omatsola and Adegoke described the structure and stratigraphy of the Abeokuta formation [
The Dahomey Basin is described by an extensive wedge of Cretaceous to Recent sediments which lies unconformably on the basement [
The lower Ise Formation which overlies the basement contains conglomerates, coarse to medium grain sandstones and shales that were deposited in continental and deltaic environments. The conglomerates are imbricated and at some locations, ironstones occur [
Overlying the Ise Formation of the Abeokuta group is the Afowo Formation which is made up coarse to medium grained sands and interbedded shales, siltstones and claystone with the sandy facies bearing tar while the shales are organic rich [
The lower part of this formation which overlie the Ise Formation is transitional with mixed brackish to marginal horizons that alternate with well sorted, sub-rounded sands indicating a littoral or estuarine near shore environment of
deposition [
The study area is located in Ibese, southwestern Nigeria about 40km southwest of Abeokuta where quarrying activities have revealed rocks of diverse ages and lithologies within the basin (
The field mapping was carried out in order to determine different rock units and their association within the area. The samples constitute limestone, shale and sandstone. A systematic mapping and sampling was adopted at five meters’ intervals. The lithostratigraphic descriptive geology of the study area is well described in the quarry site where exposures of the rocks can be studied (Figures 3-9). The rocks are structurally undeformed and strike east west running parallel to the coastline. The rocks association were defined from core samples with the uppermost unit extending up to about 0.7 m.
The samples were disaggregated and subjected to lithological description and petrography in the laboratory while the samples for the XRF analysis were pulverized into a fine powder. Between 10 mg - 15 mg of the samples were subjected to X-ray fluorescence Spectrometric analysis which was done using the Rigaku XRF Spectrometer with a rhodium (Rh) target. This runs at 50 KV/50 mA with full vacuum and a 25 mm mask for the analysis of various major oxides with the detectable limits for the major elements which were 0.01% for SiO2, Al2O3, CaO and 0.04% for Fe2O3 both at 100% upper limit. The petrographic slides were prepared at the thin section laboratory, where thin sections approximately 30 µm thick of the samples were produced for microscopic study.
The lithofacies that constitute the study area are sandstone, clay, shale, limestone and marl. The sandstones are fine grain with the ferruginized sandy clay units
significantly difference from the upper units. The clay and shale units are lateritized occurring as concretions ranging from brown to reddish brown and grey in colour respectively. The shale units are rich in glauconite and the limestone units constitute the weathered, poorly fossiliferous partly to the telltale of weathering on the layer and unweathered units which grades from the upper layer in a diffuse manner. The diagenetic process has had its toll on this layer due to pore spaces (mouldic and vuggy porosities) which shows casts of the disintegrated fossils (Figures 3-9). The marl units are described as the impure limestone. The deeper section of this unit shows contact between the basal weathered marl and a fresh top layer with the former occurring in the form of lateritic clay concretions.
The major elements from the six wells within the Ewekoro Formation put the average percentages of major oxides across the wells as CaO (51% - 56%), SiO2 (2.6% - 10.56%), Fe2O3 (0.33% - 0.94%), MgO (0.78% - 1.02% and Al2O3 (0.72% - 0.98%) (Appendix: Tables 1-6). The percentage concentration of CaO increases down the formation to approximately 13.0 m depth, where the highest value was recorded which tapper down the formation to the limestone-marl contact. The average percentage composition of CaO is 52.6% which indicate the dominancy of this oxide. This corroborate with the petrographic studies with the occurrence of carbonate bioclasts within the lime mud matrix [
The increase in the amount of CaO at different depths clearly defines diverse carbonate lithologic units. At 13 m depth, there is a significant increase in the amount of MgO, this significant enrichment is attributed to increase in the amount of coralline algae and/or had an initial dolomitization where the water in the basin may be partially isolated under conditions of aridity and hence enriched in magnesium by continual inflow of sea water and subsequent precipitation of carbonate. Enrichment in this manner would form a heavy brine solution that moved down through porous sediments below and dolomitize those carbonates with which it came in contact with [
The geochemistry of well-1 defined the depth of carbonate diagenetic redistribution complemented by the amount of SiO2 measured from various horizons (Appendix:
MgO peaked showing the depth of favoured carbonate deposition and/or aragonite-calcite inversion which also correspond with the increase in the value of SiO2. This helps in inferring the environment of deposition and the diagenetic redistribution [
limestone (0.693%) has constituted a slight alumina contaminant to the upper limestone units viametoric water percolation.
The modal composition of Fe2O3 in the Ewekoro Formation is low compared to other oxides in the well. The low Fe3+ confirms the suboxic character of the palaeoenvironment responsible for the deposition. The Fe/Mg ratios measured in the upper limestone horizon with an average of 0.40 is an indication of continental influence [
The amount of MgO relative to depth in well-3 defined the depth of carbonate primary replacement complemented by the amount of SiO2 measured from various horizons which showed different peaks (
The ratio of MgO with depth in well-4 defined the depth of carbonate diagenetic re-distribution which is complemented by the amount of SiO2 measured from various horizons with different peak (
In well-5 at 13.0 m depth, there is a sharp increase in both MgO and SiO2 (
Three microfacies recognized are shelly biomicrite (bioclastic wackestone), shelly biosparmicrite (bioclastic wackestone-packstone) and alga biosparmicrite (Alga bioclastic wackestone-packestone) [
This represents the topmost portion of the limestone layers. The rock is micrite (mud) supported and contain a substantial amount of bioclasts (grain). At different sections, the rock defines about 1/4 of spar. Bioclasts described from this layer include pelecypods which take a higher percentage of bioclasts population, gastropods, echinoids, cup corals exhibiting radial structure and coralline algae.
Internal micritization of some grains were observed especially the mollusks, gastropods, echinoids and brachiopods. Micritic corrosion of the surface of coralline algae and pelecypods gave rise to more degenerated structures. Internal recrystallization of bioclasts is well defined. Non bioclastic components are intraclasts, quartz grains and occasional pellets.
This microfacies succeeds the top biomicrite due to the increase in intraclasts, spar and bioclasts populations. It clearly define the increase in population of coralline and rod-like algae compared to others while there is an increase in population of prismatic mollusks, intraclasts shell fragments and cup algae. It shows sorting and compaction relative to the first microfacies and a decrease in internal structure of bioclasts. Internal sparitization increases in this facies while the
spars crystal increase outward from shell boundaries, however, the compaction increases grain to grain contact.
This microfacies is the lowermost section of the limestone sequence in Ibese. It is synonymous to the alga bioclastic wackestone-packstone [
in the amount of skeletal debris. Grain dissolution and interparticle porosity are significant as they reflect the degree of diagenetic process, hence affecting their physical properties.
Based on the sedimentological indices, the shale units of Akinbo Formation are fine with no sand, silt or carbonates, grey, flaggy and slabby indicating low energy quiet water setting. The palaeobathymetry of the fossil assemblage defined from the earlier studies indicated benthic dwellers except for some shell fragments whose origin could not be ascertain [
As the processes of micritization and sparitization are diagenetic processes which may involve the recrystallization of solid solutions of carbonate into coarse calcitic crystals or the mechanical degradation of shells into carbonate mud which may eventually alter the initial depositional fabric of the deposit, sequel to this, there has been decrease in the total porosity of the rocks where the topmost biomicrite defines mouldic, fenestrael, intraparticle and little interparticle porosities. The shelly biosparmicrite and alga biosparmicrite microfacies are characterized by increase in grains’ components which increase the grain to grain contacts of the rock units thus enhances interparticle porosity [
The magnesium content of the carbonate rock is low when compared to calcium, while the average percentage composition across the wells ranges between 0.78% - 1.02%. This low composition is attributed to an increase in organism complexities (advanced phyla) based on this premise, a shallow marine environment of deposition is suggested. The presence of SiO2, K2O and Al2O3 is an indication of clastic input and degree of diagenesis on the lithofacies [
Detailed mapping and logging of the study area showed the total thickness of the limestone ranged from 12.0 m to 15.0 m. The limestone consists of milky to grey and nodular to massive fossiliferous units. It is evident that the sand units increase with depth. The major element percentages revealed an increase in CaO with depth and an average of 56% and also a corresponding increase in MgO with average of 0.86% which show the calcitic nature of the deposit. The six wells showed significant peaks in MgO and SiO2 at depth approximately 13.0 m. The increase in the Mg component suggests diagenetic processes and the significant occurrence of Al2O3 and Fe2O3 in the sequence is an indication of continental influence in the diagenetic history of the sedimentation. Three different microfacies were recognized based on depositional texture, they are shelly biomicrite, shelly biosparmicrite and alga biosparmicrite. The predominance of micrite as the cementing matrix revealed that the rock was deposited in a quiet shallow inner shelf environment occasioned by storm waves. The elemental composition of the rock units suggested the suitability of deposit for cement production however; further studies could look into the lime saturation factor (LSF), silica modulus (SR) and alumina modulus (AR) in making up for corrections to meet production specifications.
Boboye, O.A. and Omotosho, O.J. (2017) Petrological and Geochemical Evaluation of the Paleocene- Eocene Lithofacies in Dahomey Embayment, Southwestern Nigeria. Open Journal of Geology, 7, 690-719. https://doi.org/10.4236/ojg.2017.75047
Depth (m) | CaO (%) | SiO2 (%) | Al2O3 (%) | Fe2O3 (%) | MgO (%) | K2O (%) | SiO2 (%) | Mg/Ca | Fe/Ca | Si/Ca | Fe/Mg | Si/Al | Ca/Mg | Mg/Ca | Fe/Ca | Si/Ca |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1.00 | 0.22 | 77.49 | 9.50 | 4.20 | 0.19 | 0.77 | 77.49 | 0.863636 | 19.09091 | 352.2273 | 22.10526 | 8.156842 | 1.157895 | 0.863636 | 19.09091 | 352.2273 |
1.50 | 0.17 | 65.27 | 14.71 | 6.20 | 0.36 | 0.70 | 65.27 | 2.117647 | 36.47059 | 383.9412 | 17.22222 | 4.437118 | 0.472222 | 2.117647 | 36.47059 | 383.9412 |
2.00 | 0.18 | 65.94 | 13.58 | 6.75 | 0.39 | 0.82 | 65.94 | 2.166667 | 37.50000 | 366.3333 | 17.30769 | 4.855670 | 0.461538 | 2.166667 | 37.50000 | 366.3333 |
2.50 | 0.15 | 65.25 | 14.22 | 7.12 | 0.4 | 0.88 | 65.25 | 2.666667 | 47.46667 | 435.0000 | 17.80000 | 4.588608 | 0.375000 | 2.666667 | 47.46667 | 435.0000 |
3.00 | 0.18 | 64.32 | 1.87 | 9.16 | 0.38 | 0.84 | 64.32 | 2.111111 | 50.88889 | 357.3333 | 24.10526 | 34.39572 | 0.473684 | 2.111111 | 50.88889 | 357.3333 |
3.50 | 0.19 | 62.96 | 15.32 | 5.84 | 0.47 | 0.84 | 62.96 | 2.473684 | 30.73684 | 331.3684 | 12.42553 | 4.109661 | 0.404255 | 2.473684 | 30.73684 | 331.3684 |
4.00 | 0.2 | 65.32 | 14.80 | 5.45 | 0.41 | 0.82 | 65.32 | 2.050000 | 27.25000 | 326.6000 | 13.29268 | 4.413514 | 0.487805 | 2.050000 | 27.25000 | 326.6000 |
4.50 | 0.21 | 64.19 | 14.20 | 5.13 | 0.38 | 1.54 | 64.19 | 1.809524 | 24.42857 | 305.6667 | 13.50000 | 4.520423 | 0.552632 | 1.809524 | 24.42857 | 305.6667 |
5.00 | 0.20 | 63.82 | 15.22 | 4.98 | 0.43 | 0.87 | 63.82 | 2.150000 | 24.90000 | 319.1000 | 11.58140 | 4.193167 | 0.465116 | 2.150000 | 24.90000 | 319.1000 |
5.50 | 51.10 | 4.44 | 0.82 | 0.44 | 1.13 | 0.17 | 4.44 | 0.022114 | 0.008611 | 0.086888 | 0.389381 | 5.414634 | 45.22124 | 0.022114 | 0.008611 | 0.086888 |
6.00 | 52.43 | 3.61 | 0.59 | 0.39 | 1.10 | 0.27 | 3.61 | 0.020980 | 0.007438 | 0.068854 | 0.354545 | 6.118644 | 47.66364 | 0.020980 | 0.007438 | 0.068854 |
6.55 | 51.80 | 4.94 | 0.55 | 0.40 | 1.44 | 0.08 | 4.94 | 0.027799 | 0.007722 | 0.095367 | 0.277778 | 8.981818 | 35.97222 | 0.027799 | 0.007722 | 0.095367 |
7.00 | - | - | washout | - | - | - | - | - | - | - | - | - | - | - | - | - |
7.50 | 52.72 | 3.48 | 0.84 | 0.48 | 0.84 | 0.06 | 3.48 | 0.015933 | 0.009105 | 0.066009 | 0.571429 | 4.142857 | 62.76190 | 0.015933 | 0.009105 | 0.066009 |
8.05 | 52.74 | 3.32 | 0.57 | 0.52 | 1.06 | 0.72 | 3.32 | 0.020099 | 0.009860 | 0.062950 | 0.490566 | 5.824561 | 49.75472 | 0.020099 | 0.009860 | 0.062950 |
8.50 | 51.66 | 4.82 | 0.87 | 0.52 | 1.11 | 0.07 | 4.82 | 0.021487 | 0.010066 | 0.093302 | 0.468468 | 5.540230 | 46.54054 | 0.021487 | 0.010066 | 0.093302 |
9.00 | 51.74 | 4.16 | 0.82 | 0.50 | 1.68 | 0.08 | 4.16 | 0.032470 | 0.009664 | 0.080402 | 0.297619 | 5.073171 | 30.79762 | 0.032470 | 0.009664 | 0.080402 |
9.50 | 52.16 | 3.27 | 0.65 | 0.36 | 106 | 0.07 | 3.27 | 2.032209 | 0.006902 | 0.062692 | 0.003396 | 5.030769 | 0.492075 | 2.032209 | 0.006902 | 0.062692 |
10.00 | 52.58 | 3.37 | 0.59 | 0.39 | 0.98 | 0.17 | 3.37 | 0.018638 | 0.007417 | 0.064093 | 0.397959 | 5.711864 | 53.65306 | 0.018638 | 0.007417 | 0.064093 |
10.50 | 52.52 | 3.90 | 0.47 | 0.32 | 0.83 | 0.16 | 3.90 | 0.015804 | 0.006093 | 0.074257 | 0.385542 | 8.297872 | 63.27711 | 0.015804 | 0.006093 | 0.074257 |
11.00 | 52.16 | 3.51 | 0.52 | 0.35 | 0.70 | 0.06 | 3.51 | 0.013420 | 0.006710 | 0.067293 | 0.500000 | 6.750000 | 74.51429 | 0.013420 | 0.006710 | 0.067293 |
11.50 | 51.80 | 4.36 | 0.85 | 0.42 | 1.18 | 0.12 | 4.36 | 0.022780 | 0.008108 | 0.084170 | 0.355932 | 5.129412 | 43.89831 | 0.022780 | 0.008108 | 0.084170 |
12.00 | 51.85 | 4.06 | 0.90 | 0.45 | 1.11 | 0.19 | 4.06 | 0.021408 | 0.008679 | 0.078303 | 0.405405 | 4.511111 | 46.71171 | 0.021408 | 0.008679 | 0.078303 |
12.30 | - | - | washout | - | - | - | - | - | - | - | - | - | - | - | - | - |
12.50 | 51.84 | 4.90 | 0.54 | 0.38 | 0.98 | 0.05 | 4.90 | 0.018904 | 0.007330 | 0.094522 | 0.387755 | 9.074074 | 52.89796 | 0.018904 | 0.007330 | 0.094522 |
13.00 | 52.56 | 3.75 | 0.45 | 0.44 | 1.01 | 0.05 | 3.75 | 0.019216 | 0.008371 | 0.071347 | 0.435644 | 8.333333 | 52.03960 | 0.019216 | 0.008371 | 0.071347 |
13.50 | 44.31 | 10.38 | 1.65 | 1.14 | 4.84 | 0.10 | 10.38 | 0.109230 | 0.025728 | 0.234259 | 0.235537 | 6.290909 | 9.154959 | 0.109230 | 0.025728 | 0.234259 |
14.00 | 53.10 | 2.40 | 0.45 | 0.38 | 1.06 | 0.14 | 2.40 | 0.019962 | 0.007156 | 0.045198 | 0.358491 | 5.333333 | 50.09434 | 0.019962 | 0.007156 | 0.045198 |
14.50 | 51.74 | 4.43 | 0.57 | 0.42 | 1.02 | 0.06 | 4.43 | 0.019714 | 0.008118 | 0.085620 | 0.411765 | 7.771930 | Na | 0.019714 | 0.008118 | 0.085620 |
15.00 | 52.54 | 3.02 | 0.49 | 0.32 | 0.90 | 0.06 | 3.02 | 0.017130 | 0.006091 | 0.057480 | 0.355556 | 6.163265 | Na | 0.017130 | 0.006091 | 0.057480 |
15.50 | 53.19 | 2.98 | 0.42 | 0.38 | 0.91 | 0.04 | 2.98 | 0.017108 | 0.007144 | 0.056026 | 0.417582 | 7.095238 | Na | 0.017108 | 0.007144 | 0.056026 |
16.00 | 53.14 | 2.47 | 0.48 | 0.40 | 0.72 | 0.05 | 2.47 | 0.013549 | 0.007527 | 0.046481 | 0.555556 | 5.145833 | Na | 0.013549 | 0.007527 | 0.046481 |
16.50 | 51.59 | 4.48 | 0.94 | 0.53 | 1.18 | 0.06 | 4.48 | 0.022873 | 0.010273 | 0.086839 | 0.449153 | 4.765957 | Na | 0.022873 | 0.010273 | 0.086839 |
17.00 | 52.37 | 3.28 | 0.84 | 0.55 | 0.96 | 0.05 | 3.28 | 0.018331 | 0.010502 | 0.062631 | 0.572917 | 3.904762 | Na | 0.018331 | 0.010502 | 0.062631 |
17.50 | 49.31 | 7.32 | 0.75 | 0.56 | 1.12 | 0.06 | 7.32 | 0.022713 | 0.011357 | 0.148449 | 0.500000 | 9.760000 | Na | 0.022713 | 0.011357 | 0.148449 |
18.00 | 51.7 | 4.13 | 0.48 | 0.42 | 1.15 | 0.14 | 4.13 | 0.022244 | 0.008124 | 0.079884 | 0.365217 | 8.604167 | Na | 0.022244 | 0.008124 | 0.079884 |
18.50 | 49.16 | 8.67 | 0.92 | 0.47 | 0.82 | 0.04 | 8.67 | 0.016680 | 0.009561 | 0.176363 | 0.573171 | 9.423913 | Na | 0.016680 | 0.009561 | 0.176363 |
Depth (m) | CaO(%) | SiO2(%) | Al2O3(%) | Fe2O3(%) | MgO(%) | K2O(%) | Mg/Ca | Fe/Ca | Si/Ca | Fe/Mg | Si/Al | Ca/Mg |
---|---|---|---|---|---|---|---|---|---|---|---|---|
0.50 | 0.16 | 72.36 | 10.16 | 5.38 | 0.15 | 0.10 | 0.937500 | 33.62500 | 452.2500 | 35.86667 | 7.122047 | 1.066667 |
1.00 | 0.14 | 6.77 | 15.68 | 6.65 | 0.40 | 0.80 | 2.857143 | 47.50000 | 48.35714 | 16.62500 | 0.431760 | 0.350000 |
1.50 | 0.15 | 62.85 | 14.76 | 5.57 | 0.19 | 0.29 | 1.266667 | 37.13333 | 419.0000 | 29.31579 | 4.258130 | 0.789474 |
2.00 | 0.13 | 63.82 | 14.72 | 6.48 | 0.31 | 0.62 | 2.384615 | 49.84615 | 490.9231 | 20.90323 | 4.335598 | 0.419355 |
2.50 | 0.12 | 62.94 | 15.37 | 5.94 | 0.37 | 0.76 | 3.083333 | 49.50000 | 524.5000 | 16.05405 | 4.094990 | 0.324324 |
3.00 | 0.14 | 60.85 | 14.13 | 5.30 | 0.26 | 0.39 | 1.857143 | 37.85714 | 434.6429 | 20.38462 | 4.306440 | 0.538462 |
3.50 | 0.14 | 62.86 | 14.12 | 7.24 | 0.36 | 0.79 | 2.571429 | 51.71429 | 449.0000 | 20.11111 | 4.451841 | 0.388889 |
4.00 | 0.19 | 63.75 | 14.45 | 4.98 | 0.47 | 0.90 | 2.473684 | 26.21053 | 335.5263 | 10.59574 | 4.411765 | 0.404255 |
4.50 | 0.17 | 62.93 | 14.10 | 6.18 | 0.14 | 0.79 | 0.823529 | 36.35294 | 370.1765 | 44.14286 | 4.463121 | 1.214286 |
5.00 | 0.19 | 65.27 | 16.26 | 5.30 | 0.47 | 0.94 | 2.473684 | 27.89474 | 343.5263 | 11.27660 | 4.014145 | 0.404255 |
5.50 | 0.18 | 63.79 | 15.15 | 5.18 | 0.38 | 0.92 | 2.111111 | 28.77778 | 354.3889 | 13.63158 | 4.210561 | 0.473684 |
6.00 | 0.16 | 67.62 | 11.14 | 5.30 | 0.35 | 0.35 | 2.187500 | 33.12500 | 422.6250 | 15.14286 | 6.070018 | 0.457143 |
6.50 | 0.19 | 62.90 | 15.92 | 5.17 | 0.39 | 0.97 | 2.052632 | 27.21053 | 331.0526 | 13.25641 | 3.951005 | 0.487179 |
6.90 | 0.30 | 65.72 | 13.47 | 5.31 | 0.29 | 1.79 | 0.966667 | 17.70000 | 219.0667 | 18.31034 | 4.878990 | 1.034483 |
7.50 | 49.43 | 8.12 | 2.27 | 1.27 | 1.15 | 0.13 | 0.023265 | 0.025693 | 0.164273 | 1.104348 | 3.577093 | 42.98261 |
8.00 | 52.45 | 2.76 | 0.49 | 0.35 | 0.67 | 0.09 | 0.012774 | 0.006673 | 0.052622 | 0.522388 | 5.632653 | 78.28358 |
8.50 | 53.31 | 2.15 | 0.35 | 0.22 | 0.50 | 0.06 | 0.009379 | 0.004127 | 0.040330 | 0.440000 | 6.142857 | 106.6200 |
9.00 | 53.35 | 2.74 | 0.45 | 0.35 | 0.52 | 0.06 | 0.009747 | 0.006560 | 0.051359 | 0.673077 | 6.088889 | 102.5962 |
9.50 | 49.63 | 6.22 | 0.97 | 0.65 | 0.77 | 0.05 | 0.015515 | 0.013097 | 0.125327 | 0.844156 | 6.412371 | 64.45455 |
10.00 | 51.87 | 4.80 | 0.45 | 0.37 | 0.66 | 0.06 | 0.012724 | 0.007133 | 0.092539 | 0.560606 | 10.66667 | 78.59091 |
10.50 | 53.55 | 2.32 | 0.39 | 0.32 | 0.75 | 0.05 | 0.014006 | 0.005976 | 0.043324 | 0.426667 | 5.948718 | 71.40000 |
11.00 | 52.25 | 3.80 | 0.47 | 0.38 | 0.65 | 0.06 | 0.012440 | 0.007273 | 0.072727 | 0.584615 | 8.085106 | 80.38462 |
11.50 | 53.34 | 2.30 | 0.47 | 0.32 | 0.67 | 0.05 | 0.012561 | 0.005999 | 0.043120 | 0.477612 | 4.893617 | 79.61194 |
12.00 | 52.48 | 3.26 | 0.38 | 0.28 | 0.52 | 0.04 | 0.009909 | 0.005335 | 0.062119 | 0.538462 | 8.578947 | 100.9231 |
12.50 | 53.49 | 2.16 | 0.42 | 0.25 | 0.49 | 0.05 | 0.009161 | 0.004674 | 0.040381 | 0.510204 | 5.142857 | 109.1633 |
13.00 | 53.44 | 2.90 | 0.44 | 0.36 | 0.56 | 0.38 | 0.010479 | 0.006737 | 0.054266 | 0.642857 | 6.590909 | 95.42857 |
13.50 | 52.57 | 3.67 | 0.45 | 0.34 | 0.52 | 0.05 | 0.009892 | 0.006468 | 0.069812 | 0.653846 | 8.155556 | 101.0962 |
14.00 | 53.88 | 2.40 | 0.73 | 0.35 | 0.68 | 0.06 | 0.012621 | 0.006496 | 0.044543 | 0.514706 | 3.287671 | 79.23529 |
14.60 | 51.90 | 4.25 | 0.60 | 0.40 | 1.02 | 0.07 | 0.019653 | 0.007707 | 0.081888 | 0.392157 | 7.083333 | 50.88235 |
15.00 | - | - | washout | - | - | - | - | - | - | - | - | - |
15.50 | 48.67 | 7.40 | 0.80 | 0.59 | 2.52 | 0.09 | 0.051777 | 0.012122 | 0.152044 | 0.234127 | 9.250000 | 19.31349 |
16.00 | 51.33 | 4.29 | 0.45 | 0.37 | 1.32 | 0.08 | 0.025716 | 0.007208 | 0.083577 | 0.280303 | 9.533333 | 38.88636 |
16.50 | 54.39 | 1.36 | 0.58 | 0.47 | 0.95 | 0.06 | 0.017466 | 0.008641 | 0.025005 | 0.494737 | 2.344828 | 57.25263 |
17.00 | 53.99 | 2.19 | 0.52 | 0.32 | 0.76 | 0.06 | 0.014077 | 0.005927 | 0.040563 | 0.421053 | 4.211538 | 71.03947 |
17.50 | 53.23 | 2.59 | 0.56 | 0.49 | 0.57 | 0.05 | 0.010708 | 0.009205 | 0.048657 | 0.859649 | 4.625000 | 93.38596 |
18.00 | 51.18 | 4.33 | 0.83 | 0.44 | 1.10 | 0.07 | 0.021493 | 0.008597 | 0.084603 | 0.400000 | 5.216867 | 46.52727 |
18.60 | 51.99 | 4.44 | 0.68 | 0.39 | 1.28 | 0.03 | 0.024620 | 0.007501 | 0.085401 | 0.304688 | 6.529412 | 40.61719 |
19.50 | 49.23 | 8.44 | 0.52 | 0.45 | 1.23 | 0.13 | 0.024985 | 0.009141 | 0.171440 | 0.365854 | 16.23077 | 40.02439 |
20.00 | 47.13 | 10.24 | 1.54 | 1.20 | 1.22 | 0.12 | 0.025886 | 0.025461 | 0.217271 | 0.983607 | 6.649351 | 38.63115 |
20.50 | 48.94 | 7.52 | 0.82 | 0.67 | 0.71 | 0.06 | 0.014508 | 0.013690 | 0.153658 | 0.943662 | 9.170732 | 68.92958 |
Depth (m) | CaO(%) | SiO2(%) | Al2O3(%) | Fe2O3(%) | MgO(%) | K2O(%) | Mg/Ca | Fe/Ca | Si/Ca | Fe/Mg | Si/Al | Ca/Mg |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1.00 | 0.18 | 72.79 | 10.65 | 6.25 | 0.19 | 0.12 | 1.055556 | 34.72222 | 404.3889 | 32.89474 | 6.834742 | 0.947368 |
1.50 | 0.13 | 63.42 | 12.89 | 9.27 | 0.28 | 0.55 | 2.153846 | 71.30769 | 487.8462 | 33.10714 | 4.920093 | 0.464286 |
2.00 | 0.1 | 64.42 | 12.19 | 11.14 | 0.31 | 0.71 | 3.100000 | 111.4000 | 644.2000 | 35.93548 | 5.284660 | 0.322581 |
2.50 | 0.14 | 62.57 | 12.86 | 8.17 | 0.33 | 0.75 | 2.357143 | 58.35714 | 446.9286 | 24.75758 | 4.865474 | 0.424242 |
3.00 | 0.16 | 63.92 | 11.14 | 7.32 | 0.29 | 0.71 | 1.812500 | 45.75000 | 399.5000 | 25.24138 | 5.737882 | 0.551724 |
3.50 | 0.44 | 65.95 | 12.9 | 4.26 | 0.21 | 1.38 | 0.477273 | 9.681818 | 149.8864 | 20.28571 | 5.112403 | 2.095238 |
4.00 | 0.28 | 64.52 | 10.57 | 7.44 | 0.2 | 1.27 | 0.714286 | 26.57143 | 230.4286 | 37.20000 | 6.104068 | 1.400000 |
4.50 | 0.12 | 63.94 | 11.27 | 8.57 | 0.27 | 1.93 | 2.250000 | 71.41667 | 532.8333 | 31.74074 | 5.673469 | 0.444444 |
5.00 | 0.11 | 62.67 | 13.32 | 8.36 | 0.26 | 2.79 | 2.363636 | 76.00000 | 569.7273 | 32.15385 | 4.704955 | 0.423077 |
5.50 | 52.4 | 3.30 | 0.75 | 0.60 | 0.57 | 0.06 | 0.010878 | 0.011450 | 0.062977 | 1.052632 | 4.400000 | 91.92982 |
6.00 | - | - | - | washout | - | - | - | - | - | - | - | - |
6.50 | 40.21 | 18.2 | 4.22 | 2.72 | 1.13 | 0.04 | 0.028102 | 0.067645 | 0.452624 | 2.407080 | 4.312796 | 35.58407 |
7.00 | 52.69 | 3.76 | 0.84 | 0.46 | 0.56 | 0.07 | 0.010628 | 0.00873 | 0.071361 | 0.821429 | 4.476190 | 94.08929 |
7.50 | 52.12 | 3.68 | 0.65 | 0.54 | 0.48 | 0.06 | 0.00921 | 0.010361 | 0.070606 | 1.125000 | 5.661538 | 108.5833 |
8.00 | 53.74 | 2.5 | 0.34 | 0.29 | 0.38 | 0.06 | 0.007071 | 0.005396 | 0.046520 | 0.763158 | 7.352941 | 141.4211 |
8.50 | 52.44 | 3.34 | 0.52 | 0.42 | 0.32 | 0.05 | 0.006102 | 0.008009 | 0.063692 | 1.312500 | 6.423077 | 163.8750 |
9.00 | 54.19 | 1.43 | 0.34 | 0.28 | 0.40 | 0.08 | 0.007381 | 0.005167 | 0.026389 | 0.700000 | 4.205882 | 135.4750 |
9.50 | 53.37 | 2.17 | 0.59 | 0.36 | 0.54 | 0.09 | 0.010118 | 0.006745 | 0.040660 | 0.666667 | 3.677966 | 98.83333 |
10.00 | 52.22 | 3.55 | 0.75 | 0.55 | 0.52 | 0.05 | 0.009958 | 0.010532 | 0.067982 | 1.057692 | 4.733333 | 100.4231 |
10.50 | - | - | - | washout | - | - | - | - | - | - | - | - |
11.00 | 53.94 | 2.27 | 0.56 | 0.32 | 0.32 | 0.06 | 0.005933 | 0.005933 | 0.042084 | 1.000000 | 4.053571 | 168.5625 |
11.50 | 54.15 | 1.25 | 0.45 | 0.32 | 0.36 | 0.16 | 0.006648 | 0.005910 | 0.023084 | 0.888889 | 2.777778 | 150.4167 |
12.00 | 53.94 | 2.66 | 0.44 | 0.21 | 0.49 | 0.06 | 0.009084 | 0.003893 | 0.049314 | 0.428571 | 6.045455 | 110.0816 |
12.50 | 53.72 | 2.41 | 0.2 | 0.36 | 0.51 | 0.11 | 0.009494 | 0.006701 | 0.044862 | 0.705882 | 12.05000 | 105.3333 |
13.00 | 53.51 | 2.82 | 0.45 | 0.32 | 0.64 | 0.04 | 0.011960 | 0.005980 | 0.052700 | 0.500000 | 6.266667 | 83.60938 |
13.50 | 52.32 | 3.63 | 0.58 | 0.45 | 0.92 | 0.04 | 0.017584 | 0.008601 | 0.069381 | 0.489130 | 6.258621 | 56.86957 |
13.70 | 48.42 | 7.69 | 1.55 | 1.03 | 3.71 | 0.06 | 0.076621 | 0.021272 | 0.158819 | 0.277628 | 4.961290 | 13.05121 |
14.20 | - | - | - | washout | - | - | - | - | - | - | - | - |
14.50 | 48.42 | 7.69 | 1.55 | 1.03 | 3.71 | 0.06 | 0.076621 | 0.021272 | 0.158819 | 0.277628 | 4.961290 | 13.05121 |
15.00 | 48.84 | 5.32 | 1.85 | 1.10 | 2.36 | 0.06 | 0.048321 | 0.022523 | 0.108927 | 0.466102 | 2.875676 | 20.69492 |
15.50 | 51.75 | 4.37 | 0.87 | 0.45 | 1.32 | 0.05 | 0.025507 | 0.008696 | 0.084444 | 0.340909 | 5.022989 | 39.20455 |
16.00 | 51.96 | 4.03 | 1.48 | 1.20 | 1.12 | 0.08 | 0.021555 | 0.023095 | 0.077560 | 1.071429 | 2.722973 | 46.39286 |
16.60 | 48.73 | 6.73 | 1.48 | 1.20 | 1.12 | 0.08 | 0.022984 | 0.024625 | 0.138108 | 1.071429 | 4.547297 | 43.50893 |
17.70 | - | - | - | washout | - | - | - | - | - | - | - | - |
18.00 | 48.87 | 8.13 | 0.92 | 0.68 | 1.07 | 0.04 | 0.021895 | 0.013914 | 0.166360 | 0.635514 | 8.836957 | 45.67290 |
18.50 | 49.37 | 8.24 | 0.84 | 0.74 | 0.82 | 0.05 | 0.016609 | 0.014989 | 0.166903 | 0.902439 | 9.809524 | 60.20732 |
19.00 | 48.85 | 8.22 | 0.82 | 0.58 | 0.49 | 0.06 | 0.010031 | 0.011873 | 0.168270 | 1.183673 | 10.02439 | 99.69388 |
Depth (m) | CaO(%) | SiO2(%) | Al2O3(%) | Fe2O3(%) | MgO(%) | K2O(%) | Mg/Ca | Fe/Ca | Si/Ca | Fe/Mg | Si/Al | Ca/Mg |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1.00 | 0.13 | 72.7 | 10.34 | 5.16 | 0.18 | 0.19 | 1.384615 | 39.66154 | 559.2308 | 28.64444 | 7.030948 | 0.722222 |
1.50 | 0.18 | 72.31 | 11.31 | 5.31 | 0.16 | 0.24 | 0.888889 | 29.50000 | 401.7222 | 33.1875 | 6.393457 | 1.125000 |
2.00 | 0.19 | 65.83 | 12.81 | 8.35 | 0.30 | 4.68 | 1.578947 | 43.94737 | 346.4737 | 27.83333 | 5.138954 | 0.633333 |
2.50 | 0.16 | 64.25 | 12.75 | 10.23 | 0.27 | 3.44 | 1.687500 | 63.93750 | 401.5625 | 37.88889 | 5.039216 | 0.592593 |
3.00 | 51.26 | 4.15 | 0.82 | 0.62 | 0.69 | 0.11 | 0.013461 | 0.012095 | 0.080960 | 0.898551 | 5.060976 | 74.28986 |
3.30 | 53.73 | 2.24 | 0.55 | 0.34 | 0.51 | 0.06 | 0.009492 | 0.006328 | 0.041690 | 0.666667 | 4.072727 | 105.3529 |
4.00 | 52.84 | 3.44 | 0.49 | 0.38 | 0.54 | 0.65 | 0.010220 | 0.007192 | 0.065102 | 0.703704 | 7.020408 | 97.85185 |
4.50 | 53.49 | 2.31 | 0.65 | 0.53 | 0.51 | 0.06 | 0.009534 | 0.009908 | 0.043186 | 1.039216 | 3.553846 | 104.8824 |
5.00 | 54.68 | 1.47 | 0.56 | 0.45 | 0.50 | 0.08 | 0.009144 | 0.008230 | 0.026884 | 0.900000 | 2.625000 | 109.3600 |
5.50 | 54.39 | 1.45 | 0.49 | 0.28 | 0.34 | 0.05 | 0.006251 | 0.005148 | 0.026659 | 0.823529 | 2.959184 | 159.9706 |
6.00 | 53.63 | 2.60 | 0.52 | 0.35 | 0.35 | 0.13 | 0.006526 | 0.006526 | 0.048480 | 1.000000 | 5.000000 | 153.2286 |
6.50 | 53.84 | 2.49 | 0.64 | 0.52 | 0.34 | 0.07 | 0.006315 | 0.009658 | 0.046248 | 1.529412 | 3.890625 | 158.3529 |
7.00 | 53.17 | 2.94 | 0.52 | 0.40 | 0.25 | 0.08 | 0.004702 | 0.007523 | 0.055294 | 1.600000 | 5.653846 | 212.6800 |
7.50 | 54.62 | 1.69 | 0.40 | 0.24 | 0.29 | 0.06 | 0.005309 | 0.004394 | 0.030941 | 0.827586 | 4.225000 | 188.3448 |
8.00 | 54.36 | 1.59 | 0.45 | 0.35 | 0.38 | 0.05 | 0.006990 | 0.006439 | 0.029249 | 0.921053 | 3.533333 | 143.0526 |
8.50 | 48.11 | 7.17 | 1.95 | 0.86 | 0.97 | 0.11 | 0.020162 | 0.017876 | 0.149033 | 0.886598 | 3.676923 | 49.59794 |
9.00 | 48.35 | 6.75 | 1.65 | 1.00 | 1.20 | 0.21 | 0.024819 | 0.020683 | 0.139607 | 0.833333 | 4.090909 | 40.29167 |
9.50 | 51.40 | 4.31 | 0.55 | 0.42 | 1.37 | 0.09 | 0.026654 | 0.008171 | 0.083852 | 0.306569 | 7.836364 | 37.51825 |
10.00 | 52.29 | 3.34 | 0.72 | 0.65 | 0.89 | 0.05 | 0.017020 | 0.012431 | 0.063875 | 0.730337 | 4.638889 | 58.75281 |
10.50 | 52.79 | 3.45 | 0.60 | 0.44 | 0.88 | 0.05 | 0.016670 | 0.008335 | 0.065353 | 0.500000 | 5.750000 | 59.98864 |
11.00 | 53.12 | 2.93 | 0.67 | 0.47 | 0.92 | 0.05 | 0.017319 | 0.008848 | 0.055158 | 0.510870 | 4.373134 | 57.73913 |
11.50 | 53.19 | 2.30 | 0.57 | 0.45 | 0.68 | 0.05 | 0.012784 | 0.008460 | 0.043241 | 0.661765 | 4.035088 | 78.22059 |
12.00 | 52.37 | 3.21 | 0.54 | 0.38 | 0.86 | 0.05 | 0.016422 | 0.007256 | 0.061295 | 0.441860 | 5.944444 | 60.89535 |
12.50 | 52.24 | 3.62 | 0.54 | 0.42 | 0.87 | 0.08 | 0.016654 | 0.008040 | 0.069296 | 0.482759 | 6.703704 | 60.04598 |
13.00 | 51.69 | 4.24 | 0.62 | 0.45 | 0.91 | 0.04 | 0.017605 | 0.008706 | 0.082027 | 0.494505 | 6.838710 | 56.80220 |
13.50 | 51.33 | 4.50 | 0.92 | 0.82 | 0.8 | 0.05 | 0.015585 | 0.015975 | 0.087668 | 1.025000 | 4.891304 | 64.16250 |
14.00 | 51.92 | 4.32 | 0.82 | 0.62 | 0.77 | 0.04 | 0.014831 | 0.011941 | 0.083205 | 0.805195 | 5.268293 | 67.42857 |
14.50 | 50.05 | 5.36 | 0.96 | 0.85 | 1.03 | 0.05 | 0.020579 | 0.016983 | 0.107093 | 0.825243 | 5.583333 | 48.59223 |
15.00 | 48.21 | 8.26 | 1.27 | 0.85 | 0.98 | 0.05 | 0.020328 | 0.017631 | 0.171334 | 0.867347 | 6.503937 | 49.19388 |
15.50 | 46.48 | 10.56 | 2.54 | 1.24 | 1.11 | 0.12 | 0.023881 | 0.026678 | 0.227194 | 1.117117 | 4.157480 | 41.87387 |
Depth (m) | CaO(%) | SiO2(%) | Al2O3(%) | Fe2O3(%) | MgO(%) | K2O(%) | Mg/Ca | Fe/Ca | Si/Ca | Fe/Mg | Si/Al | Ca/Mg |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1.00 | 0.14 | 30.47 | 8.62 | 4.34 | 0.29 | 0.54 | 2.071429 | 31.00000 | 217.6429 | 14.96552 | 3.534803 | 0.482759 |
1.50 | 0.18 | 70.77 | 12.37 | 6.04 | 0.22 | 0.17 | 1.222222 | 33.55556 | 393.1667 | 27.45455 | 5.721099 | 0.818182 |
2.00 | 0.10 | 68.47 | 1362 | 7.14 | 0.29 | 0.24 | 2.900000 | 71.40000 | 684.7000 | 24.62069 | 0.050272 | 0.344828 |
2.55 | 0.15 | 64.84 | 12.6 | 8.30 | 0.17 | 0.22 | 1.133333 | 55.33333 | 432.2667 | 48.82353 | 5.146032 | 0.882353 |
3.00 | 54.10 | 1.45 | 0.49 | 0.35 | 0.44 | 0.06 | 0.008133 | 0.006470 | 0.026802 | 0.795455 | 2.959184 | 122.9545 |
3.50 | 53.91 | 2.80 | 0.56 | 0.39 | 0.43 | 0.08 | 0.007976 | 0.007234 | 0.051938 | 0.906977 | 5.000000 | 125.3721 |
4.00 | 53.22 | 2.16 | 0.54 | 0.43 | 0.45 | 0.16 | 0.008455 | 0.008080 | 0.040586 | 0.955556 | 4.000000 | 118.2667 |
4.40 | - | - | - | washout | - | - | - | - | - | - | - | |
4.50 | 53.22 | 2.16 | 0.54 | 0.43 | 0.45 | 0.16 | 0.008455 | 0.008080 | 0.040586 | 0.955556 | 4.000000 | 118.2667 |
5.00 | 54.36 | 4.31 | 0.48 | 0.38 | 0.38 | 0.06 | 0.006990 | 0.006990 | 0.079286 | 1.000000 | 8.979167 | 143.0526 |
5.50 | 52.94 | 3.46 | 0.75 | 0.47 | 0.48 | 0.05 | 0.009067 | 0.008878 | 0.065357 | 0.979167 | 4.613333 | 110.2917 |
6.00 | 52.46 | 3.37 | 0.64 | 0.54 | 0.59 | 0.08 | 0.011247 | 0.010294 | 0.064239 | 0.915254 | 5.265625 | 88.91525 |
6.50 | 51.70 | 4.32 | 0.62 | 0.45 | 0.96 | 0.09 | 0.018569 | 0.008704 | 0.083559 | 0.468750 | 6.967742 | 53.85417 |
7.50 | 49.39 | 6.60 | 0.88 | 0.45 | 1.14 | 0.08 | 0.023082 | 0.009111 | 0.133630 | 0.394737 | 7.500000 | 43.32456 |
8.00 | 52.68 | 3.34 | 0.79 | 0.44 | 0.69 | 0.05 | 0.013098 | 0.008352 | 0.063402 | 0.637681 | 4.227848 | 76.34783 |
8.50 | 52.44 | 3.20 | 0.71 | 0.48 | 0.83 | 0.06 | 0.015828 | 0.009153 | 0.061022 | 0.578313 | 4.507042 | 63.18072 |
9.00 | 53.57 | 2.65 | 0.55 | 0.43 | 0.57 | 0.04 | 0.010640 | 0.008027 | 0.049468 | 0.754386 | 4.818182 | 93.98246 |
9.50 | 51.8 | 4.44 | 0.84 | 0.65 | 0.63 | 0.06 | 0.012162 | 0.012548 | 0.085714 | 1.031746 | 5.285714 | 82.22222 |
10.00 | 51.96 | 4.80 | 0.65 | 0.35 | 0.90 | 0.05 | 0.017321 | 0.006736 | 0.092379 | 0.388889 | 7.384615 | 57.73333 |
10.50 | 52.8 | 3.40 | 0.84 | 0.56 | 0.73 | 0.04 | 0.013826 | 0.010606 | 0.064394 | 0.767123 | 4.047619 | 72.32877 |
11.00 | 51.50 | 4.90 | 0.82 | 0.65 | 0.32 | 0.14 | 0.006214 | 0.012621 | 0.095146 | 2.031250 | 5.975610 | 160.9375 |
11.50 | 52.79 | 3.67 | 0.68 | 0.54 | 0.39 | 0.12 | 0.007388 | 0.010229 | 0.069521 | 1.384615 | 5.397059 | 135.3590 |
12.00 | 51.47 | 4.73 | 0.73 | 0.48 | 1.29 | 0.15 | 0.025063 | 0.009326 | 0.091898 | 0.372093 | 6.479452 | 39.89922 |
12.50 | 43.46 | 15.2 | 3.75 | 2.10 | 0.29 | 0.07 | 0.006673 | 0.048320 | 0.349747 | 7.241379 | 4.053333 | 149.8621 |
13.00 | 51.62 | 4.32 | 0.62 | 0.50 | 0.30 | 0.13 | 0.005812 | 0.009686 | 0.083688 | 1.666667 | 6.967742 | 172.0667 |
13.50 | 37.95 | 21.4 | 3.25 | 2.75 | 1.45 | 0.20 | 0.038208 | 0.072464 | 0.563900 | 1.896552 | 6.584615 | 26.17241 |
14.00 | 51.36 | 4.73 | 0.96 | 0.84 | 0.62 | 0.15 | 0.012072 | 0.016355 | 0.092095 | 1.354839 | 4.927083 | 82.83871 |
14.50 | 50.81 | 5.78 | 0.68 | 0.43 | 0.35 | 0.22 | 0.006888 | 0.008463 | 0.113757 | 1.228571 | 8.500000 | 145.1714 |
Depth (m) | CaO(%) | SiO2(%) | Al2O3(%) | Fe2O3(%) | MgO(%) | K2O(%) | Mg/Ca | Fe/Ca | Si/Ca | Fe/Mg | Si/Al | Ca/Mg |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1.00 | 0.16 | 69.21 | 12.45 | 8.88 | 0.15 | 0.14 | 0.937500 | 55.50000 | 432.5625 | 59.20000 | 5.559036 | 1.066667 |
1.50 | 0.14 | 70.5 | 10.81 | 6.26 | 0.17 | 0.10 | 1.214286 | 44.71429 | 503.5714 | 36.82353 | 6.521739 | 0.823529 |
2.00 | 0.10 | 60.75 | 15.6 | 9.63 | 0.18 | 0.29 | 1.800000 | 96.30000 | 607.5000 | 53.50000 | 3.894231 | 0.555556 |
2.50 | 0.11 | 61.78 | 16.22 | 9.02 | 0.19 | 0.30 | 1.727273 | 8200000 | 561.6364 | 47.47368 | 3.808878 | 0.578947 |
3.00 | 54.13 | 1.29 | 0.49 | 0.34 | 0.37 | 0.06 | 0.006835 | 0.006281 | 0.023832 | 0.918919 | 2.632653 | 146.2973 |
3.10 | 54.12 | 1.82 | 0.38 | 0.29 | 0.25 | 0.06 | 0.004619 | 0.005358 | 0.033629 | 1.160000 | 4.789474 | 216.4800 |
4.00 | 54.12 | 1.82 | 0.38 | 0.29 | 0.25 | 0.06 | 0.004619 | 0.005358 | 0.033629 | 1.160000 | 4.789474 | 216.4800 |
4.50 | 53.40 | 2.90 | 0.42 | 0.37 | 0.67 | 0.13 | 0.012547 | 0.006929 | 0.054307 | 0.552239 | 6.904762 | 79.70149 |
5.00 | 41.63 | 19.00 | 1.98 | 1.39 | 0.78 | 0.08 | 0.018736 | 0.033389 | 0.456402 | 1.782051 | 9.595960 | 53.37179 |
5.50 | 54.24 | 1.42 | 0.42 | 0.25 | 0.33 | 0.04 | 0.006084 | 0.004609 | 0.026180 | 0.757576 | 3.380952 | 164.3636 |
6.00 | 51.40 | 4.37 | 0.62 | 0.42 | 0.6 | 0.12 | 0.011673 | 0.008171 | 0.085019 | 0.700000 | 7.048387 | 85.66667 |
6.50 | 0.23 | 64.84 | 11.5 | 5.88 | 0.14 | 0.08 | 0.608696 | 25.56522 | 281.9130 | 42.00000 | 5.638261 | 1.642857 |
7.10 | 51.12 | 4.27 | 0.59 | 0.42 | 0.22 | 0.06 | 0.004304 | 0.008216 | 0.083529 | 1.909091 | 7.237288 | 232.3636 |
8.50 | 53.34 | 2.25 | 0.38 | 0.25 | 0.71 | 0.35 | 0.013311 | 0.004687 | 0.042182 | 0.352113 | 5.921053 | 75.12676 |
9.50 | 52.72 | 3.56 | 0.54 | 0.42 | 0.62 | 0.05 | 0.011760 | 0.007967 | 0.067527 | 0.677419 | 6.592593 | 85.03226 |
10.00 | 53.12 | 2.25 | 0.63 | 0.54 | 0.66 | 0.10 | 0.012425 | 0.010166 | 0.042357 | 0.818182 | 3.571429 | 80.48485 |
10.50 | 51.24 | 4.21 | 0.52 | 0.44 | 0.96 | 0.15 | 0.018735 | 0.008587 | 0.082162 | 0.458333 | 8.096154 | 53.37500 |
11.00 | 52.67 | 3.2 | 0.64 | 0.46 | 0.82 | 0.06 | 0.015569 | 0.008734 | 0.060756 | 0.560976 | 5.000000 | 64.23171 |
11.40 | 52.85 | 3.71 | 0.8 | 0.47 | 0.42 | 0.08 | 0.007947 | 0.008893 | 0.070199 | 1.119048 | 4.637500 | 125.8333 |
12.00 | 52.02 | 3.14 | 0.65 | 0.52 | 0.69 | 0.15 | 0.013264 | 0.009996 | 0.060361 | 0.753623 | 4.830769 | 75.39130 |
12.50 | 51.10 | 4.19 | 0.74 | 0.46 | 1.2 | 0.14 | 0.023483 | 0.009002 | 0.081996 | 0.383333 | 5.662162 | 42.58333 |
13.00 | 51.25 | 4.25 | 0.48 | 0.37 | 0.92 | 0.05 | 0.017951 | 0.007220 | 0.082927 | 0.402174 | 8.854167 | 55.70652 |
13.50 | 51.20 | 4.71 | 0.62 | 0.38 | 0.72 | 0.06 | 0.014063 | 0.007422 | 0.091992 | 0.527778 | 7.596774 | 71.11111 |
14.00 | 50.61 | 5.98 | 0.56 | 0.44 | 0.6 | 0.13 | 0.011855 | 0.008694 | 0.118158 | 0.733333 | 10.67857 | 84.35000 |
14.50 | 43.72 | 18.18 | 0.79 | 0.63 | 0.63 | 0.26 | 0.014410 | 0.014410 | 0.415828 | 1.000000 | 23.01266 | 69.39683 |
15.00 | 53.29 | 2.27 | 0.36 | 0.24 | 0.82 | 0.07 | 0.015388 | 0.004504 | 0.042597 | 0.292683 | 6.305556 | 64.98780 |
15.50 | 48.12 | 11.7 | 0.58 | 0.41 | 0.68 | 0.18 | 0.014131 | 0.008520 | 0.243142 | 0.602941 | 20.17241 | 70.76471 |
16.00 | 48.14 | 9.34 | 0.57 | 0.33 | 0.53 | 0.28 | 0.011010 | 0.006855 | 0.194017 | 0.622642 | 16.38596 | 90.83019 |
Sample No | Depth (m) | Allochems (and% Composition) | Sparite | Micrite | Support | |||
---|---|---|---|---|---|---|---|---|
Bioclasts | Intraclasts | Pellets | Ooids | |||||
A2 | 12.0 | Sponge spicules, pelecypods, algae, echinoids, shell fragments, gastropods (48%) | Intraclasts (2%) | Few (2%) | Few (2%) | Present as infill within bioclasts, (6%) | Present as matrix, (40%) | Micrite |
B2 | 15.0 | Coralline algae, gastropods, algae, corals, pelecypods, foraminifera, shell fragments, sponge spicules, (35%) | Present (15%) | Present (3%) | Few (2%) | Present as infill and matrix components, (10%) | Present as matrix, (35%) | Micrite |
C2 | 19.0 | Gastropods foraminifera, algae mat, echinoid, shell fragments, sponge spicules, (36%) | Present (10%) | Present (6%) | Few (2%) | Present as infill and matrix components, (6%) | Present as matrix, (40%) | Micrite |
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