STRUCTURE AND SEISMIC STRATIGRAPHY OF THE INNERMOST MID-NORWEGIAN CONTINENTAL-SHELF - AN EXAMPLE FROM THE FROHAVET AREA

被引：20
作者：
BOE, R
机构：
[1] Norges Geologiske Undersøkelse, 7002 Trondheim
来源：
MARINE AND PETROLEUM GEOLOGY | 1991年 / 8卷 / 02期
关键词：
SEISMIC STRATIGRAPHY; TECTONIC EVOLUTION; FROHAVET BASIN; MID-NORWAY;
D O I：
10.1016/0264-8172(91)90002-I
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The Frohavet Basin, a newly discovered sedimentary basin on the innermost mid-Norwegian continental shelf, occurs in an area 60 x 20 km and contains a stratal sequence up to 1000 m thick. Dating by ice-transported erratic blocks suggests a Jurassic age. The sequence is preserved in half-grabens downthrown to the north-west, and is cut by numerous faults, some of which are interpreted as syndepositional. The sequence reflects an upward change from continental deposition, with the Frohavet area acting as a local depocentre, to more widespread continental and marine deposition. The predominant sediment transport direction was towards the north-west. The Frohavet sequence was deformed during a phase of extensional tectonism, probably in Late Jurassic-Early Cretaceous times.
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页码：140 / 151
页数：12
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