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>Dear all, >This is the first anouncement of a Tectonic Studies Group meeting on shear >zones to be held in March 2002. Information is available in the March issue >of Geoscientist (page 25) and also at a Web site > >http//www.st-and.ac.uk/~www_sgg/conferences.html > >Further details and contact information are given below. > > >TRANSPORT AND FLOW PROCESSES WITHIN SHEAR ZONES. > >TSG MEETING, BURLINGTON HOUSE, PICCADILLY, LONDON >18th-19th March 2002 > > >POST-CONFERENCE FIELDTRIP TO SHEAR ZONES IN THE SCOTTISH HIGHLANDS >20th-24th March 2002 > > >Shear zones are approximately tabular zones of concentrated deformation and >flow that accommodate movement of adjacent, relatively undeformed rock >units in the deeper parts of the Earth's crust and mantle. They are >important examples of the heterogeneous nature of deformation in natural >rocks and also act as fundamental pathways for the advective transport of >mineralising fluids, magmas and heat in the lithosphere. The importance of >shear zones and their products, recognised since the 19th century, have >been observed on a variety of scales from microstructural to regional, with >recent work attempting for the first time to incorporate their development >into numerical models of lithosphere-scale deformation. > >This conference will bring together Earth Scientists who apply a diverse >range of techniques and methodologies to better understand shear zone >processes and evolution. It is hoped that the meeting will provide an >up-to-date assessment of our current understanding of shear zones and that >it will act as a forum for the development of future interdisciplinary >approaches and collaboration. > >IT IS INTENDED TO PUBLISH A COLLECTION OF PAPERS DERIVED FROM THE >CONFERENCE, POSSIBLY IN THE FORM OF A SPECIAL PUBLICATION OF A SPECIAL >PUBLICATION OF THE GEOLOGICAL SOCIETY. The deadline for the submission of >papers will be at the meeting (19th March 2002) in order to allow rapid >publication. Contributions incorporating and/or combining laboratory >analytical methods, field studies and dynamic modelling of shear zones are >welcome. > >Topics which may be covered in special themed sessions include: > >SHEAR ZONES IN THE LITHOSPHERE: >Attributes and processes in mantle shear zones; crust-mantle linkages; >remote-sensing of deep shear zones; spatial and temporal controls of shear >zone reactivation; deformation partitioning and localisation; scaling >attributes of shear zones. > >FLOW PATTERNS IN NATURAL SHEAR ZONES: >The geometric and kinematic characterisitics and evolution of shear zones; >vorticity and spin; modelling strain partitioning and localisation; fabric >analyses. > >GRAIN SCALE PROCESSES OF SHEAR ZONES: >Micro-rheology - deformation mechanisms and regimes; recognising diffusive >creep in shear zones; chemical, strain and energy partitioning processes in >polymineralic rocks; modelling flow and grain-scale deformation mechanisms; >geochemical analysis. > >ADVECTIVE TRANSPORT PROCESSES: >Deformation and metamorphism/melting feedback mechanisms; fluid sources and >migation paths, mechanisms and pathways of mineralisation; magma transport >and rheology; heat budget of shear zones. > >QUANTITATIVE ANALYSIS AND MODELLING OF SHEAR ZONES: >Application of new analytical methods; geochronology of shear zones, >analogue modelling studies; numerical modelling studies; integration of >modelling work with studies of natural shear zones. > > >POST-CONFERENCE FIELDTRIP TO SHEAR ZONES IN THE SCOTTISH HIGHLANDS >20th - 24th March 2002 > >It is intended to run a post-conference fieldtrip to spectacularly exposed >shear zone localities in the Scottish Highlands where ongoing studies are >currently shedding new light on shear zone attributes and processes across >a broad range of crustal depths and timescales. We shall visit some classic >examples of shear zones developed within the Precambrian Lewisian Complex >(Gairloch, Canisp, Laxford), the Caledonian Moine Thrust Zone mylonites >(Faraid Head, Eriboll) and shear zones developed within the internal Moine >Nappe (Eriboll to Bettyhill). >Costs will be kept to a minimum with hostel-based accommodation + self >catering OR bar-meals. > >CONVENORS: >Ian Alsop, Crustal Geodynamics Group, School of Geography & Geosciences, >University of St.Andrews, Fife, Scotland, KY16 9AL UK. >(e-mail: [log in to unmask]) > >Ken McCaffrey & Bob Holdsworth, Reactivation Research Group, Dept of Geological >Sciences, University of Durham, Durham DH1 3LE, UK >(e-mail: [log in to unmask], [log in to unmask]) > >Martin Hand, Geology & Geophysics, University of Adelaide, Adelaide SA >5005, Australia (e-mail: [log in to unmask]) > >Dr. Ian Alsop >Lecturer in Structural Geology & Tectonics, >Crustal Geodynamics Group, >School of Geography & Geosciences, >University of St. Andrews, >St. Andrews, Fife, KY16 9AL UK. >Tel. (01334) 46 3937 >FAX (01334 46 3849 >e-mail [log in to unmask] > > >Dr. Ian Alsop >Lecturer in Structural Geology & Tectonics, >Crustal Geodynamics Group, >School of Geography & Geosciences, >University of St. Andrews, >St. Andrews, Fife, KY16 9AL UK. >Tel. (01334) 46 3937 >FAX (01334 46 3849 >e-mail [log in to unmask] Yours sincerely Grahame Grahame Oliver School of Geography & Geosciences, Irvine Building, North Street, University of St Andrews, St Andrews, Fife, KY16 9AL, Scotland Ph (-44)1334463938, Fax (-44)1334463849, e-mail [log in to unmask] http://www.st-and.ac.uk/~www_sgg/ggframeset.htm