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Dypvik, Henning; Nagy, Jenö (1978): Tab. 1: Semi-quantitative estimations of mineral composition. PANGAEA,, Supplement to: Dypvik, H; Nagy, J (1978): Early Tertiary Bentonites from Svalbard; a preliminary report. Polarforschung, 48(1/2), 139-150, hdl:10013/epic.29460.d001

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Paleontological and petrological studies of clay beds in the Basilika Formation (Tertiary age) are the subject of this paper. The petrology of the beds indicates that their main constituents were derived from volcanic activity and represent bentonites. Differing composition of the beds may suggest several spatially separated eruptions. The volcanic source area probably lay towards the north of the present Tertiary outcrops of Svalbard. Two foraminiferal assemblages are found in the bentonites: the lower is dominated by arenaceous forms while the upper consists of calcareous species.
Median Latitude: 77.540000 * Median Longitude: 15.755000 * South-bound Latitude: 77.500000 * West-bound Longitude: 15.710000 * North-bound Latitude: 77.580000 * East-bound Longitude: 15.800000
Basilika * Latitude: 77.500000 * Longitude: 15.800000 * Location: Svalbard * Method/Device: Profile sampling (PROFILE) * Comment: Geological section
Firkanten * Latitude: 77.580000 * Longitude: 15.710000 * Location: Svalbard * Method/Device: Profile sampling (PROFILE) * Comment: Geological section
values <1 are traces
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEvent
2Sample code/labelSample labelDypvik, Henningcorresponding to bed numbers
3Illite/Smectite ratioIll/SmeDypvik, HenningX-ray diffraction (XRD)12 Å
4Chlorite, relative abundanceChlDypvik, HenningX-ray diffraction (XRD)incl Kaolinite 7Å
5Quartz (4.26 Å), relative abundanceQz A 4.26Dypvik, HenningX-ray diffraction (XRD)
6Feldspar (3.22 Å), relative abundanceFsp 3.22Dypvik, HenningX-ray diffraction (XRD)
7Grain size, maximumGrain size maxµmDypvik, Henningobserved in thin section
89 data points

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