THE STRATIGRAPHICAL DISTRIBUTION OF WESTPHALIAN VOLCANIC ROCKS TO THE EAST AND SOUTH OF NOTTINGHAM

Autor:	I. C. Burgess
Rok vydání:	1982
Předmět:	Basalt geography geography.geographical_feature_category Geochemistry Geology Coal measures Westphalian sovereignty Volcanic rock Igneous rock Sequence (geology) Sill Viséan Geomorphology
Zdroj:	Proceedings of the Yorkshire Geological Society. 44:29-44
ISSN:	2041-4811 0044-0604
DOI:	10.1144/pygs.44.1.29
Popis:	SUMMARY Igneous rocks in the concealed North-East Leicestershire Coalfield to the east and south of Nottingham comprise both extrusive and intrusive suites. Extrusive activity, intermittent in the late Visean and Namurian, culminated in Westphalian A with the outpouring of alkaline basaltic lavas and tuffs, apparently from several sources. In the east, these contribute almost the entire sequence, intertongueing westwards with Coal Measures sediments. The intrusive rocks comprise numerous alkaline basaltic and doleritic sills, and represent a later period of activity, possibly associated with tectonism during Westphalian C.
Databáze:	OpenAIRE
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