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The lower part of the Kap Stewart Formation, formed by the domi-nantly conglomeratic 'barren sandstone', represents alluvial fan de-posits. Upwards there is a marked change to the well developed fining upwards sequences of the 'plant-bearing series ' which com-prise three facies:...
Main Authors: | , , , , , , , , |
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Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.549.7547 http://2dgf.dk/xpdf/bull23-03-04-203-212.pdf |
Summary: | The lower part of the Kap Stewart Formation, formed by the domi-nantly conglomeratic 'barren sandstone', represents alluvial fan de-posits. Upwards there is a marked change to the well developed fining upwards sequences of the 'plant-bearing series ' which com-prise three facies: 1. Coarse arkosic sandstones and conglomerates; 2. Fine rippled bioturbated green sandstones; 3.Variegated siltstones with plant remains and occasional rootlet beds and coal seams. Trough shaped channels, unidirectional palaeocurrents and a lack of epsilon cross-beds all indicate a low sinuosity non braided river environment in close proximity to a SSE source area. In the basal Jurassic a humid climate coal belt in Northern Europe and East Greenland contrasts with an arid climate evaporite belt in Morocco |
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