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

[1]

[Anonymous], DEFORMATION PROCESSE

[2]

BARR D, 1986, GEOL SOC AM BULL, V97, P754, DOI 10.1130/0016-7606(1986)97<754:CDTIAP>2.0.CO

[3]

[4] DEEP-STRUCTURE OF THE FORELAND TO THE CALEDONIAN OROGEN, NW SCOTLAND - RESULTS OF THE BIRPS WINCH PROFILE [J].

BREWER, JA ;

SMYTHE, DK .

TECTONICS, 1986, 5 (02) :171-&

[5] GEOLOGICAL CONSTRAINTS, STRUCTURAL EVOLUTION, AND DEEP GEOLOGY OF THE NORTHWEST SCOTTISH CALEDONIDES [J].

BUTLER, RWH ;

COWARD, MP .

TECTONICS, 1984, 3 (03) :347-365

[6]

DEARNLEY R, 1962, Q J GEOL SOC LOND, V118, P143

[7]

FETTES DJ, 1992, MEMOIR BRIT GEOLOGIC

[8]

FRANCIS PW, 1973, EARLY PRECAMBRIAN SC, P95

[9]

Jehu T.J., 1925, T ROY SOC EDINBURGH, V53, P615, DOI DOI 10.1017/S0080456800027514

[10] THE RELATIONSHIP BETWEEN K-AR MINERAL AGES, MICA GRAINSIZES AND MOVEMENT ON THE MOINE THRUST ZONE, NW HIGHLANDS, SCOTLAND [J].

KELLEY, S .

JOURNAL OF THE GEOLOGICAL SOCIETY, 1988, 145 (01) :1-10

← 1 2 3 →