The ‘Pliocene’ gravels of Buchan: a reappraisal

Autor:	Richard H. Kesel, Alastair M. D. Gemmell
Rok vydání:	1981
Předmět:	Paleontology Early Pleistocene Bedding Clastic rock Fluvial Geology Sedimentary rock Glacial period Imbrication Matrix (geology)
Zdroj:	Scottish Journal of Geology. 17:185-203
ISSN:	2041-4951 0036-9276
DOI:	10.1144/sjg17030185
Popis:	Synopsis Detailed investigations of the sedimentary characteristics and composition of the so-called ‘Pliocene’ gravels of Buchan reveal them to belong to lithologically distinctive units. One unit, called the Windy Hills Gravels, is composed of gravels containing 80 to 90 per cent rounded quartzite clasts set in a sandy matrix. The bedding characteristics, gravel imbrication and granulometric analyses indicate that this deposit is of fluvial or fluvio-glacial origin deposited by a flow emanating from a westerly or northwesterly source. The other unit, the Cruden Flint Gravels, is composed of flint and quartzite cobbles set in a sand to clay matrix with interbedded sands. This unit is considered to be of glacial and fluvio-glacial origin. Present evidence does not allow precise dating of the units, but they are suggested to be late Pliocene or early Pleistocene in age.
Databáze:	OpenAIRE
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