Search Results - "STRACHAN, R. A."

Patterns of Silurian deformation and magmatism during sinistral oblique convergence, northern Scottish Caledonides by Strachan, R. A, Alsop, G. I, Ramezani, J, Frazer, R. E, Burns, I. M, Holdsworth, R. E

“…Regional ductile thrusting and syn-kinematic granitic magmatism within the Caledonides of northern Scotland occurred within a sinistrally-oblique convergent…”
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U-Pb zircon constraints on obduction initiation of the Unst Ophiolite; an oceanic core complex in the Scottish Caledonides? by Crowley, Q. G, Strachan, R. A

“…The Unst Ophiolite is the best exposed of a chain of early Ordovician ophiolites in the Scottish Caledonides and is widely regarded as having formed in a…”
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Evidence from Rb-Sr mineral ages for multiple orogenic events in the Caledonides of Shetland, Scotland by Walker, Stephanie, Thirlwall, M. F, Strachan, R. A, Bird, A. F

“…Shetland occupies a unique central location within the North Atlantic Caledonides. Thirty-three new high-precision Rb-Sr mineral ages indicate a polyorogenic…”
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Lu-Hf and Sm-Nd dating of metamorphic garnet; evidence for multiple accretion events during the Caledonian Orogeny in Scotland by Bird, A. F, Thirlwall, M. F, Strachan, R. A, Manning, C. J

“…Caledonian orogenesis in Scotland is currently interpreted in terms of a Mid-Ordovician arc-continent collision (Grampian event) followed by the Silurian…”
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The Neoarchean Uyea Gneiss Complex, Shetland; an onshore fragment of the Rae Craton on the European Plate by Kinny, Peter D, Strachan, R. A, Fowler, Mike, Clark, Chris, Davis, S, Jahn, I, Taylor, Richard J. M, Holdsworth, R. E, Dempsey, E

“…A tract of amphibolite-facies granitic gneisses and metagabbros in northern Shetland, UK, is here named the Uyea Gneiss Complex. Zircon U-Pb dating indicates…”
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Changing Silurian-Devonian relative plate motion in the Caledonides; sinistral transpression to sinistral transtension by Dewey, J. F, Strachan, R. A

“…The late Silurian to mid- or late Devonian interval in the Caledonides was a period dominated, sequentially, by sinistral transpression, strike-slip and…”
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U-Pb detrital zircon geochronology of the Dalradian Supergroup, Shetland Islands, Scotland; implications for regional correlations and Neoproterozoic-Palaeozoic basin development by Strachan, R. A, Prave, A. R, Kirkland, C. L, Storey, C. D

“…U-Pb detrital zircon data show that the East Mainland Succession, the presumed correlative of the Dalradian Supergroup in the Shetland Islands, Scotland, is…”
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A Rheic cause for the Acadian deformation in Europe by Woodcock, N. H, Soper, N. J, Strachan, R. A

“…The Acadian (Mid-Devonian) deformation in NW Europe has typically been interpreted as the culminating event of the Silurian closure of the Iapetus Ocean. This…”
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Silurian-Devonian magmatism, mineralization, regional exhumation and brittle strike-slip deformation along the Loch Shin Line, NW Scotland by Holdsworth, R. E, Dempsey, E, Selby, D, Darling, J. R, Feely, M, Costanzo, A, Strachan, R. A, Waters, P, Finlay, A. J, Porter, S. J

“…The Loch Shin Line is a geological-geophysical lineament associated with a zone of mantle-derived appinites, granites and strike-slip faulting that runs NW-SE…”
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Timing of regional deformation and development of the Moine thrust zone in the Scottish Caledonides; constraints from the U-Pb geochronology of alkaline intrusions by Goodenough, K. M, Millar, I, Strachan, R. A, Krabbendam, M, Evans, J. A

“…The Moine Thrust Zone in the Scottish Highlands developed during the Scandian Event of the Caledonian Orogeny, and now forms the boundary between the…”
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P-T constraints and timing of Barrovian metamorphism in the Shetland Islands, Scottish Caledonides; implications for the structural setting of the Unst Ophiolite by Cutts, K. A, Hand, M, Kelsey, D. E, Strachan, R. A

“…An integrated in situ monazite laser-ablation inductively coupled plasma mass spectrometry and metamorphic equilibria study is used to establish the P-T…”
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Evidence for 930 Ma metamorphism in the Shetland Islands, Scottish Caledonides; implications for Neoproterozoic tectonics in the Laurentia-Baltica sector of Rodinia by Cutts, Kathryn A, Hand, M, Kelsey, D. E, Wade, B, Strachan, Rob A, Clark, C, Netting, A

“…Zircon and monazite laser-ablation inductively coupled plasma mass spectrometry U-Pb geochronological data for two metasediment samples from the Westing Group,…”
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Global C cycle perturbations recorded in marbles; a record of Neoproterozoic Earth history within the Dalradian succession of the Shetland Islands, Scotland by Prave, A. R, Strachan, R. A, Fallick, A. E

“…The Shetland Islands in Scotland contain a c. 12 km thick, mostly siliciclastic Neoproterozoic succession that experienced deformation and greenschist- to…”
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Provenance of the Highland Border Complex; constraints on Laurentian margin accretion in the Scottish Caledonides by Cawood, P. A, Merle, R. E, Strachan, R. A, Tanner, P. W. G

“…Contrasting tectonic models for the Highland Border Complex in the Scottish Caledonides view it either as part of the rifted Laurentian margin of the Iapetus…”
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Sedimentology of the early Neoproterozoic Morar Group in northern Scotland; implications for basin models and tectonic setting by Bonsor, H. C, Strachan, R. A, Prave, A. R, Krabbendam, M

“…The metasedimentary rocks of the Morar Group in northern Scotland form part of the early Neoproterozoic Moine Supergroup. The upper part of the group is c. 2-3…”
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Heterogeneous reworking of Grampian metamorphic complexes during Scandian thrusting in the Scottish Caledonides; insights from the structural setting and U-Pb geochronology of the Strath Halladale Granite by Kocks, H, Strachan, R. A, Evans, J. A

“…The Neoproterozoic Moine Supergroup in the Caledonides of northern Scotland is disposed in a series of thrust nappes. The Skinsdale Thrust in East Sutherland…”
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A reappraisal of the Sibson-Scholz fault zone model: The nature of the frictional to viscous ("brittle-ductile") transition along a long-lived, crustal-scale fault, Outer Hebrides, Scotland by Imber, J., Holdsworth, R. E., Butler, C. A., Strachan, R. A.

“…The widely cited Sibson‐Scholz conceptual fault zone model suggests that seismically active, upper crustal brittle faults pass downward across a predominantly…”
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Provenance of the Moine Supergroup of NW Scotland; evidence from geochronology of detrital and inherited zircons from (meta)sedimentary rocks, granites and migmatites by Friend, C. R. L, Strachan, R. A, Kinny, P. D, Watt, G. R

“…Detrital and inherited zircons from rocks of the Moine Supergroup from structural and stratigraphic positions above and below the Sgurr Beag and Naver thrusts…”
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U-Pb zircon dating of basement inliers within the Moine Supergroup, Scottish Caledonides; implications of Archaean protolith ages by Friend, C. R. L, Strachan, Robert A, Kinny, P. D

“…Basement gneiss inliers within the Scottish Caledonides have been conventionally correlated with the Archaean Lewisian Gneiss Complex of the Caledonian…”
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Terrane analysis along a Neoproterozoic active margin of Gondwana; insights from U-Pb zircon geochronology by Strachan, R. A, Collins, A. S, Buchan, C, Nance, R. D, Murphy, J. B, D'Lemos, R. S

“…The tectonic affinities of terranes in accretionary orogens can be evaluated using geochronological techniques. U-Pb zircon data obtained from paragneisses of…”
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