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Voka Member

ID: 482

General info

Unit nameVoka kihistik
Unit nameVoka Member
Belongs toSillaoru Formation
Typelithostratigraphy
RankMember
Scoperegional
RegionEstonia 5
Statusformal standard
AuthorOrviku
Year1958
EtymonVoka, village (E)
Original localityVoka cliff
AgeKunda Stage
IndexBII-IIIS'V
IndexO2slV

Stratotypes

TypeLocalityDepth (m)ReferenceRemarks
holostratotypeVoka outcropRõõmusoks, 1983

Chemical composition and other properties

Variableminavgmaxstdcount
Al2O3 [%]2.250003.536664.980001.120003
CaO [%]22.2100029.7666641.780008.588463
Cl [%]0.020000.040000.070000.021603
CO2 [%]29.8800035.3600038.860003.924313
Dry density [kg/m3]2414.000002511.000002572.0000069.344553
Fe2O3 [%]0.890004.645008.400003.755002
Fe2O3total [%]1.020006.9680014.830005.143045
FeO [%]0.120000.200000.280000.080002
Grain density [kg/m3]2723.000002882.666662987.00000114.659883
illiit [%]97.0000097.5000098.000000.500002
Insoluble residue [%]8.0000011.8500015.700003.849992
K2O [%]1.240001.706662.360000.475903
kloriit [%]2.000002.500003.000000.500002
MgO [%]4.560007.3600010.790002.582103
MnO [%]0.180000.253330.320000.057343
Na2O [%]0.040000.060000.080000.016323
P-wave velocity [m/sec in dry sample]4449.000004449.000004449.000000.000001
P-wave velocity [m/sec in wet sample]3685.900003915.020004144.14000229.120002
P2O5 [%]0.480001.016661.340000.382123
Porosity [%]5.6000012.7333317.900005.210453
S [%]0.030000.036660.040000.004713
SiO2 [%]8.2900011.6566616.450003.480703
Size fraction 0.05-0.01 mm [%]6.500006.850007.200000.350002
Size fraction 0.1-0.05 mm [%]0.400001.000001.600000.600002
Size fraction 0.25-0.1 mm [%]0.200000.200000.200000.000002
Size fraction 0.5-0.25 mm [%]1
Size fraction 1-0.5 mm [%]1
Size fraction <0.01 mm [%]91.7000092.0500092.400000.349992
TiO2 [%]0.120000.276660.390000.114403
Wet density [kg/m3]2592.000002637.666662694.0000042.318893

Specimens in collections (approximately): 4

Samples in collections (approximately): 22

Thickness map (partial data only)

Localitybase, mtop, mthicknessreferencepreferred
Äiamaa borehole 243.85 244.10 -0.25 Põlma, päevik 13 0