Dypvik, Henning; Nagy, Jenö (1978): Tab. 1: Semi-quantitative estimations of mineral composition. PANGAEA, https://doi.org/10.1594/PANGAEA.743231, 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
values <1 are traces
|#||Name||Short Name||Unit||Principal Investigator||Method/Device||Comment|
|2||Sample code/label||Sample label||Dypvik, Henning||corresponding to bed numbers|
|3||Illite/Smectite ratio||Ill/Sme||Dypvik, Henning||X-ray diffraction (XRD)||12 Å|
|4||Chlorite, relative abundance||Chl||Dypvik, Henning||X-ray diffraction (XRD)||incl Kaolinite 7Å|
|5||Quartz (4.26 Å), relative abundance||Qz A 4.26||Dypvik, Henning||X-ray diffraction (XRD)|
|6||Feldspar (3.22 Å), relative abundance||Fsp 3.22||Dypvik, Henning||X-ray diffraction (XRD)|
|7||Grain size, maximum||Grain size max||µm||Dypvik, Henning||observed in thin section|
89 data points