Crustal structure of the London-Brabant Massif, southern North Sea
article
In 1991 a deep seismic line, MPNI-9101, was acquired in the southern North Sea. At the northern margin of the London-Brabant Massif, Devonian and Carboniferous siliciclastic and carbonate rocks onlap the massif. Farther south, shallow parts of the seismic line in the vicinity of the axial zone of the London-Brabant Massif are almost completely devoid of primary reflections. This zone is composed of strongly folded Lower Palaeozoic sedimentary units which have been mapped in the onshore part of Belgium. Numerous seismic reflection multiples from the base of the Cretaceous are observed on this part of the section. The southern limit of the zone is very abrupt and may correspond to a fault belt delimiting an area of magmatic rocks known in the onshore part of Belgium. Unusually the deeper parts of the seismic line show a strongly reflective lower crust beneath the London-Brabant. -from Authors
TNO Identifier
232343
ISSN
00167568
Source
Geological Magazine, 130(5), pp. 569-574.
Pages
569-574
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