The nature and origin of fissures in the East Anglian Coralline and Red Crags
作者:
P. S. Balson,
B. Humphreys,
期刊:
Journal of Quaternary Science
(WILEY Available online 1986)
卷期:
Volume 1,
issue 1
页码: 13-19
ISSN:0267-8179
年代: 1986
DOI:10.1002/jqs.3390010103
出版商: John Wiley&Sons, Ltd
关键词: Quaternary;East Anglian Crags;neotectonics;fissures;southern North Sea basin
数据来源: WILEY
摘要:
AbstractVertical or inclined planar fissures that may for the most part be classified as joints are commonly seen in exposures of both the Coralline and Red Crag in East Anglia. Measurements of fissure orientation reveal orthogonal patterns of alignment in both formations. The field relations of the fissures to the host Crag sediment suggest a tectonic rather than periglacial origin. It is proposed that the fissure system is the product of early Pleistocene tectonic flexuring in the area, on the western margin of the subsiding southern North Sea basin.
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