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Scasso, R A; Grunenberg, Thomas; Bausch, W M (2011): Tab. 1: Mineralogical composition and chemical analyses of major and trace elements of Ameghino Formation rocks. PANGAEA, https://doi.org/10.1594/PANGAEA.763364, Supplement to: Scasso, RA et al. (1991): Mineralogical and geochemical characterization of the Ameghino Formation Mudstones (Upper Jurassie, Antarctic Peninsula) and its stratigraphieal, diagenetical and paleoenvironmental Meaning. Polarforschung, 59(3), 179-198, hdl:10013/epic.29640.d001

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Abstract:
As a result of a petrographical, mineralogical and geochemical characterization of the Ameghino Formation mudstones (Upper Jurassic- Lower Cretaceous, Antarctic Peninsula), "epiclastic" radiolaria-rich and mixed (radiolaria-rich + tuff) mudstone types were recognized. Contents of clastic material in the mudstones generally increase with younger paleontological age, but local exceptions to this trend have been found. The anoxic environment of the lower part of the sequence changes to more oxidizing conditions towards the top, in transition to the Hauterivian - Barrêmian conglomerates. Element to element correlations show good agreement with the normal differentiation trends of volcanic (andesite-rhyolite) rocks, suggesting that the overall sequence is mainly volcanic in origin with various grade of reworking. For example, the radiolaria-rich mudstone matrix could have been originated from very fine touffaceous suspensions deposited very slowly after the main fall of the tuffs. However, in the upper part of the sequence, some epiclastic supply is revealed by petrographic evidence and illite crystallinity index. The clay mineral association (illite, chlorite and illite-smectite mixed layers) is mainly of diagenetic origin in the stratigraphically lower sections. Low percentages of expandable layers in the illite-smectite mixed layers, as well as the general mineralogical association, suggest a late mesodiagenetic stage, and together with geological evidence, a relatively deep burial (> 1000 m - probably > 2500 m) and temperatures exceeding 100°C.
Coverage:
Latitude: -64.500000 * Longitude: -59.000000
Event(s):
Ameghino * Latitude: -64.500000 * Longitude: -59.000000 * Location: Ameghino Formation, Antarctic Peninsula * Method/Device: Geological sample (GEOS)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Sample code/labelSample labelScasso, R A
Sample IDSample IDScasso, R A
QuartzQzScasso, R A
PlagioclasePlScasso, R A
FeldsparFspScasso, R A
PyritePyScasso, R A
CalciteCalScasso, R A
SmectiteSmeScasso, R A
IlliteIllScasso, R A
10 ChloriteChlScasso, R A
11 MineralsMineralsScasso, R Aother
12 Lithology/composition/faciesLithologyScasso, R A
13 Silicon dioxideSiO2%Scasso, R A
14 Aluminium oxideAl2O3%Scasso, R A
15 Iron oxide, Fe2O3Fe2O3%Scasso, R A
16 Manganese oxideMnO%Scasso, R A
17 Magnesium oxideMgO%Scasso, R A
18 Calcium oxideCaO%Scasso, R A
19 Sodium oxideNa2O%Scasso, R A
20 Potassium oxideK2O%Scasso, R A
21 Titanium dioxideTiO2%Scasso, R A
22 Phosphorus pentoxideP2O5%Scasso, R A
23 Sulfur, totalTSmg/kgScasso, R A
24 RubidiumRbmg/kgScasso, R A
25 StrontiumSrmg/kgScasso, R A
26 ZincZnmg/kgScasso, R A
27 ZirconiumZrmg/kgScasso, R A
Size:
1870 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Sample label

Sample ID

Qz

Pl

Fsp

Py

Cal

Sme

Ill
10 
Chl
11 
Minerals
12 
Lithology
13 
SiO2 [%]
14 
Al2O3 [%]
15 
Fe2O3 [%]
16 
MnO [%]
17 
MgO [%]
18 
CaO [%]
19 
Na2O [%]
20 
K2O [%]
21 
TiO2 [%]
22 
P2O5 [%]
23 
TS [mg/kg]
24 
Rb [mg/kg]
25 
Sr [mg/kg]
26 
Zn [mg/kg]
27 
Zr [mg/kg]
SOB-CSOBC3Bmoderatemoderatemoderatenot registeredscarcescarceabundantabundant061.0016.065.700.051.601.551.562.791.010.121990148131179157
SOB-CSOBC2moderatescarcemoderatenot registereddoubtful det.not registeredabundantabundant067.6917.706.300.062.000.732.573.020.750.18789154110119152
SOB-CSOBC1moderatescarcemoderatenot registereddoubtful det.not registeredabundantabundant065.6818.426.760.072.250.751.513.170.790.18753156143127153
UPPER SOBSOB66moderatescarcescarcenot registerednot registerednot registeredabundantabundant064.8517.056.741.890.294.410.74209127
UPPER SOBSOB65moderatemoderatescarcenot registerednot registerednot registeredabundantabundant064.1513.919.261.701.013.180.73130153
UPPER SOBSOB64moderatemoderatescarcenot registerednot registerednot registeredabundantabundant065.4516.157.501.810.253.990.83169121
UPPER SOBSOB63moderatescarcescarcenot registerednot registerednot registeredabundantabundant066.2314.447.321.800.973.200.71146137
UPPER SOBSOB62moderatescarcescarcenot registerednot registerednot registeredabundantabundant064.2914.108.481.790.723.240.76143146
UPPER SOBSO861moderatemoderatescarcenot registerednot registerednot registeredabundantabundant063.3015.997.151.710.394.050.88174142
UPPER SOBSOB60moderatescarcescarcenot registerednot registerednot registeredabundantabundant064.7214.118.241.880.713.200.77146140
UPPER SOBSOB59abundantmoderatescarcenot registerednot registerednot registeredabundantabundant066.0514.647.121.891.033.190.78157159
UPPER SOBSOB58moderatemoderatescarcenot registerednot registerednot registeredabundantabundant063.8215.046.751.840.843.750.85175158
UPPER SOBSOB57moderatemoderatenot registerednot registerednot registerednot registeredabundantabundant064.0715.297.251.791.353.480.84146187
UPPER SOBSOB56moderatemoderatescarcenot registerednot registerednot registeredabundantabundant063.4014.699.151.622.123.200.87131160
UPPER SOBSOB55moderatescarcescarcenot registerednot registerednot registeredabundantabundant064.5515.767.611.670.963.450.88152164
UPPER SOBSOB53moderatescarcescarcenot registerednot registerednot registeredabundantabundant064.6314.758.702.080.833.120.87148150
UPPER SOBSO352moderatescarcescarcenot registerednot registerednot registeredabundantabundant062.4115.298.661.731.953.480.85157158
UPPER SOBSOB51moderatescarcescarcenot registerednot registerednot registeredabundantabundant066.1914.197.621.670.853.500.87151143
UPPER SOBSOB50moderatescarcescarcenot registerednot registerednot registeredabundantabundant062.7715.018.711.670.783.791.00176151
TATAIII2moderatemoderatemoderateabundantscarcedoubtful det.abundantabundant066.5615.225.740.061.931.251.862.700.650.129747143136138139
TATAII1moderatemoderatescarcemoderatescarcescarceabundantabundant065.7214.364.600.051.441.642.952.200.580.156592122333158167
TATAIIabundantscarcemoderatescarcenot registeredscarceabundantabundant065.6214.255.750.031.470.532.012.770.640.25200213714855144
TATAI2moderatemoderatemoderatenot registerednot registereddoubtful det.abundantmoderateanalcite064.7015.955.480.041.370.952.272.420.810.20215712627645159
MIDDLE SOBSOB45moderatemoderatemoderatemoderatescarcedoubtful det.scarcemoderateanalcite067.6112.444.560.051.260.733.042.140.510.305531106223116146
MIDDLE SOBSOB44abundantmoderateabundantscarcescarcedoubtful det.scarcescarcex73.599.343.710.091.052.622.711.270.580.06168588185105135
MIDDLE SOBSOB43abundantscarcemoderatescarcenot registerednot registeredscarcemoderatex71.189.083.860.060.720.331.212.770.410.1134211277987127
MIDDLE SOBSOB42Aabundantscarcescarcenot registerednot registereddoubtful det.moderatemoderateclinoptilolite, analcitex71.686.902.990.050.960.511.391.970.450.154711187774131
MIDDLE SOBSOB41abundantmoderatescarcemoderatescarcedoubtful det.scarcescarceanalcitex70.289.073.150.050.483.061.942.180.460.23851897209163139
MIDDLE SOBSOB40abundantabundantmoderatemoderatescarcescarcescarcescarcex71.9310.503.010.060.681.853.931.510.400.10477085268117146
MIDDLE SOBSOB39moderatemoderatemoderateabundantnot registeredscarcemoderatemoderateanalcite069.4811.784.440.061.170.842.772.050.500.101292299260154147
MIDDLE SOBSOB38moderateabundantmoderatemoderatenot registeredscarcescarceabundant065.5812.275.120.061.680.524.090.690.790.13715165252175149
MIDDLE SOBSOB36abundantscarcescarcenot registerednot registeredscarceabundantmoderateclinoptilolite076.5112.333.480.041.150.521.602.370.560.08109121324125142
MIDDLE SOBSOB34abundantscarcescarcemoderatenot registerednot registeredmoderateabundant075.098.425.830.071.890.861.131.150.370.442501946555125
MIDDLE SOBSOB33moderatemoderatescarcescarcenot registeredscarcemoderateabundant072.0413.645.210.052.020.691.441.950.620.10220610820297155
MIDDLE SOBSOB29abundantscarcescarcenot registerednot registerednot registeredmoderateabundant069.6711.226.950.051.770.571.441.600.510.172961057488136
MIDDLE SOBSOB275moderatescarcescarcenot registerednot registeredscarcemoderateabundant064.739.829.290.072.002.291.190.930.381.205538610669129
LOWER SOBSOB28abundantscarcemoderatenot registerednot registeredscarceabundantabundant074.2913.105.200.061.410.481.392.660.470.106631466689136
LOWER SOBSOB26abundantscarcescarcenot registerednot registerednot registeredmoderateabundant073.449.934.760.081.320.680.761.940.390.085451344990131
LOWER SOBSOB25moderatescarcemoderatemoderatescarcedoubtful det.scarceabundantx61.5510.757.150.281.924.771.991.420.380.14238887181250139
LOWER SOBSOB24moderateabundantscarcescarcenot registeredscarcescarceabundantkaolinitex66.2111.446.860.171.370.413.190.830.390.09332373175174140
LOWER SOBSOB23moderatemoderatemoderateabundantnot registerednot registeredscarcemoderatex68.628.686.980.070.680.252.551.270.510.2473938210384129
LOWER SOBSOB21abundantmoderatemoderatenot registeredscarcedoubtful det.scarcescarceanalcitex77.608.862.200.080.450.293.321.560.250.0521191154138135
LOWER SOBSOB20moderateabundantabundantmoderatenot registereddoubtful det.not registeredmoderate075.0512.914.240.090.970.373.222.300.350.08146111311975134
LOWER SOBSOB19moderatemoderateabundantabundantnot registereddoubtful det.scarceabundant057.5313.859.580.182.710.642.322.920.850.13761410547154156
LOWER SOBSOB17abundantmoderatemoderatemoderatenot registereddoubtful det.scarceabundantx70.909.075.900.101.770.392.501.270.300.20556076100151131
LOWER SOBSOB16moderateabundantmoderateabundantnot registerednot registeredscarceabundant060.2413.268.030.122.401.083.791.560.810.221369682105130130
LOWER SOBSOB15moderateabundantmoderatemoderatenot registereddoubtful det.not registeredmoderate068.8610.274.840.071.520.714.040.890.460.19735465171154137
LOWER SOBSOB11moderateabundantabundantabundantnot registereddoubtful det.not registeredmoderate063.9411.616.040.111.881.223.081.750.710.101358682176177127
LOWER SOBSOB10abundantabundantmoderatemoderatenot registeredscarcescarcescarcex77.869.383.420.050.871.153.550.980.340.09517974195129140
LOWER SOBSOB05abundantscarcemoderatenot registerednot registereddoubtful det.moderatescarcex74.958.094.270.041.140.580.712.010.390.2217531078075127
LOWER SOBSOB04abundantscarcemoderatescarcescarcenot registeredscarcemoderatex69.899.223.710.081.403.911.461.660.370.292193102187464135
LOWER SOBSOB03abundantmoderatescarcenot registerednot registeredscarcescarcescarcex75.419.893.450.031.110.501.771.420.380.0583794226189140
LOWER SOBSOB02abundantscarcescarcenot registerednot registeredscarcescarcemoderatex73.818.984.660.061.761.491.511.450.300.31306390103112122
LOWER SOBSOB01moderateabundantmoderatemoderatescarcedoubtful det.scarcemoderateclinoptilolite071.0511.393.470.071.841.913.491.170.360.06479155266227144
LONGING GAPFA29abundantabundantmoderateabundantnot registereddoubtful det.scarcescarcex77.116.573.460.050.450.553.000.730.440.05115666958111116
LONGING GAPFA26abundantscarceabundantmoderatenot registerednot registeredscarcenot registeredx78.167.572.080.030.180.871.293.090.300.107343120106140120
LONGING GAPFA23abundantscarcescarceabundantnot registerednot registeredscarcescarcex78.085.184.120.040.850.711.340.870.320.08114897477141117
LONGING GAPFA20abundantscarcemoderatemoderatenot registerednot registerednot registeredscarceclinoptilolite, kaolinite, analcitex76.456.142.810.040.430.641.891.560.330.0583058695113123
LONGING GAPFA13abundantscarcemoderatemoderatenot registeredscarcescarcescarcex78.656.583.410.040.580.731.371.980.200.3568209543110116
LONGING GAPFA11moderatemoderateabundantmoderatenot registereddoubtful det.not registeredscarce071.009.953.990.060.571.402.213.010.570.081174810097104117
LONGING GAPFA6abundantscarcemoderatemoderatenot registerednot registeredscarceabundantclinoptilolite070.298.015.880.102.000.920.891.750.210.07921287710192176
LONGING GAPFA4Babundantmoderateabundantmoderatenot registerednot registeredscarcescarcex71.028.063.470.050.650.922.362.150.430.16110548757190122
LONGING GAPFA1moderateabundantabundantabundantscarceabundantscarcescarcekaolinite, analcitex68.0110.304.420.051.581.183.502.060.320.06179538699168128
'GLIDE BLOCK, MOUNT FLORA'GDIabundantscarcescarcenot registerednot registeredabundantmoderatemoderatex74.786.255.810.020.890.270.601.360.390.221734903150113
'GLIDE BLOCK, MOUNT FLORA'MF1moderatescarceabundantnot registerednot registerednot registeredabundantabundant061.0121.384.770.051.310.101.215.040.760.065982367258151
CARBONATITESFA12scarcescarcescarcescarceabundantnot registeredscarcescarceclinoptiloliteV9.542.272.242.740.8834.750.480.310.200.4536055613729114
CARBONATITESSOB6scarcescarcescarcenot registeredabundantscarcescarcescarceclinoptiloliteV17.672.782.240.781.0535.150.580.360.130.0779665711534110
CARBONATITESSOB7scarcescarcescarcenot registeredabundantscarcescarcescarceclinoptiloliteV32.756.012.210.901.1231.661.520.940.230.10234170141273118
CARBONATITESSOB9scarcescarcescarcenot registeredabundantscarcescarcescarceV16.712.271.530.470.7934.570.370.190.110.07316158115449112
CARBONATITESSOB27moderatescarcescarcenot registeredmoderatescarcemoderateabundantV57.477.568.820.433.3512.901.720.300.390.187545211972132
CARBONATITESTAI1scarcemoderatescarcemoderatemoderatescarcemoderateabundantanalciteV59.2916.636.720.071.406.754.210.720.880.19618768539109181
CARBONATITESTAII2scarcescarcescarcenot registeredabundantscarcemoderatescarceV16.755.044.420.482.0434.490.550.550.270.3246646533619136
CARBONATITESTAMITEscarcescarcescarcenot registeredabundantscarcemoderatescarceV14.944.522.760.571.4034.861.440.550.210.3736746634765134
CARBONATITESTAIII1scarcescarcescarcescarceabundantscarcemoderatemoderateV28.138.076.610.901.3930.611.830.760.560.2161316815240125
CARBONATITESTAIII4scarcescarcescarcenot registeredabundantscarceabundantabundantV30.9511.5610.601.282.5725.501.550.851.260.6820826818167128