LATE PROTEROZOIC RIFT FAULTS AND BASEMENT-COVER RELATIONSHIPS WITHIN THE BEN-MORE THRUST SHEET, NW SCOTLAND

Authors
Citation
Rwh. Butler, LATE PROTEROZOIC RIFT FAULTS AND BASEMENT-COVER RELATIONSHIPS WITHIN THE BEN-MORE THRUST SHEET, NW SCOTLAND, Journal of the Geological Society, 154, 1997, pp. 761-764
Citations number
13
Categorie Soggetti
Geosciences, Interdisciplinary
ISSN journal
00167649
Volume
154
Year of publication
1997
Part
5
Pages
761 - 764
Database
ISI
SICI code
0016-7649(1997)154:<761:LPRFAB>2.0.ZU;2-E
Abstract
Recently proposed models for the tectonic evolution of Northern Scotla nd, involving lithospheric extension during the late Precambrian, are supported by new discoveries and interpretations of early normal fault s within the Moine Thrust Belt, Such structures control the preservati on of Torridonian sediments beneath the sub-Cambrian unconformity, The Ben More thrust ramp from basement into the Cambrian cover may have b een controlled by the early faults. Major synclines within the Ben Mor e thrust sheet appear as tightened half-grabens and thus are composite structures, This may require a re-examination of the field relationsh ips between these folds and the apparently syn-tectonic alkaline intru sions that have been used to date thrust activity.