EVIDENCE FOR CALEDONIAN SINISTRAL STRIKE-SLIP MOTION AND ASSOCIATED FAULT ZONE WEAKENING, OUTER HEBRIDES FAULT ZONE, NW SCOTLAND

被引：26

作者：

BUTLER, CA ^{[1
]}

HOLDSWORTH, RE ^{[1
]}

STRACHAN, RA ^{[1
]}

机构：

[1] OXFORD BROOKES UNIV,SCH CONSTRUCT & EARTH SCI,DIV GEOL & CARTOG,OXFORD OX3 0BP,ENGLAND

来源：

JOURNAL OF THE GEOLOGICAL SOCIETY | 1995年 / 152卷

关键词：

OUTER HEBRIDES; FAULTS; REACTIVATION; PHYLLONITES;

D O I：

10.1144/gsjgs.152.5.0743

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The Outer Hebrides Fault Zone is a major ESE-dipping reactivated fault within the Lewisian gneisses of the Laurentian craton in NW Scotland. Early thrust structures are overprinted by a network of retrograde ductile shear zones in which fluid channelling has hydrated the pre-existing basement rocks at low temperatures, forming chlorite-white mica phyllonites in regions of highest strain. Strike-parallel mineral lineations and shear-sense indicators suggest sinistral displacements that are thought to be late Caledonian based on isotopic data and regional considerations. The phyllonites have focused extensional movements that overprint strike-slip fabrics and may control the location of the Mesozoic Sea of Hebrides and Minch basins.

引用

页码：743 / 746

页数：4

共 25 条

[21] DEEP-STRUCTURE OF THE SCOTTISH CALEDONIDES REVEALED BY THE MOIST REFLECTION PROFILE [J].

SMYTHE, DK ;

DOBINSON, A ;

MCQUILLIN, R ;

BREWER, JA ;

MATTHEWS, DH ;

BLUNDELL, DJ ;

KELK, B .

NATURE, 1982, 299 (5881) :338-340

[22] SINISTRAL TRANSPRESSION AND THE SILURIAN CLOSURE OF IAPETUS [J].

SOPER, NJ ;

STRACHAN, RA ;

HOLDSWORTH, RE ;

GAYER, RA ;

GREILING, RO .

JOURNAL OF THE GEOLOGICAL SOCIETY, 1992, 149 :871-880

[23]

Steel R.J., 1975, J GEOL SOC LONDON, V131, P183, DOI DOI 10.1144/GSJGS.131.2.0183

[24]

Stein A. M., 1988, BASIN RES, V1, P107, DOI [10.1111/j.1365-2117.1988.tb00008.x, DOI 10.1111/J.1365-2117.1988.TB00008.X]

[25]

WHITE SH, 1987, GEOLOGICAL SOC SPECI, V27, P175

← 1 2 3 →