R. R. Parrish

University of Portsmouth

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Matthew Horstwood

British Geological Survey

Yani Najman

Lancaster University

M. P. Searle

Memorial University of Newfoundland

Andrew Carter

Birkbeck, University of London

Dan N. Barfod

Scottish Universities Environmental Research Centre

David J. Waters

University of Oxford

Eduardo Garzanti

University of Milano-Bicocca

Nigel Harris

The Open University

Tom Argles

The Open University

Gavin L. Foster

National Oceanography Centre

Cooperative Institutions

Geological Survey of Canada

Natural Resources Canada

University of Oxford

The Open University

University of Cambridge

British Geological Survey

University of Leicester

King's College Hospital

Carleton University

University of British Columbia

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Late-Proterozoic tectonics in northwest Scotland: one contractional orogeny or several?

Precambrian Research (2004)

Craig Storey T. S. Brewer R. R. Parrish

Mylonite

Titanite

Sillimanite

Orogeny

Greenschist

10.1016/j.precamres.2004.06.004

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Citations (39)

K-ar, Rb-sr and Fission Track Geochronometry of the Bock's Brook Stock, Kluane Ranges, southwestern Yukon Territory

R. L. Armstrong M E Downey R. R. Parrish

Fission track dating

10.4095/102138

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Citations (3)

The pace of continental deformation and geochronology

AGU Fall Meeting Abstracts (2007)

R. R. Parrish

Geochronology

Pace

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Laser ablation MC-ICP-MS U/Pb geochronology of ocean basement calcium carbonate veins

2014 AGU Fall Meeting (2014)

Michelle Harris R.M. Coggon D.A.H. Teagle Nick M.W. Roberts R. R. Parrish

Geochronology

Basement

Laser Ablation

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Citations (1)

Geology and U-Pb geochronology of Archean basement and Proterozoic cover in the Priest River complex, northwestern United States, and their implications for Cordilleran structure and Precambrian continent reconstructions

Canadian Journal of Earth Sciences (1998)

P. Ted Doughty R A Price R. R. Parrish

Precambrian basement rocks exposed within tectonic windows in the North American Cordillera help to define the Precambrian crustal structure of western North America and possible reconstructions of the Late Proterozoic supercontinent Rodinia. New geologic mapping and U-Pb dating in the infrastructure of the Priest River metamorphic complex, northern Idaho, documents the first Archean basement (2651 ± 20 Ma) north of the Snake River Plain in the North American Cordillera. The Archean rocks are exposed in the core of an antiform and mantled by a metaquartzite that may represent the nonconformity between basement and the overlying Hauser Lake gneiss, which is correlated with the Prichard Formation of the Belt Supergroup. A structurally higher sheet of augen gneiss interleaved with the Hauser Lake gneiss yields a U-Pb zircon crystallization age somewhat greater than 1577 Ma. The slivers of augen gneiss were tectonically interleaved with the surrounding Hauser Lake gneiss near the base of the Spokane dome mylonite zone, which arches across this part of the Priest River complex. We conclude that the Spokane dome mylonite zone lies above the Archean basement-cover contact and that it was, in part, equivalent to the basal décollement of the Rocky Mountain fold and thrust belt. New U-Pb dates on metamorphic monazite and xenotime reveal peak metamorphism at ca. 72 Ma, compatible with movement along the Spokane dome mylonite zone at that time. The Archean basement could be interpreted as the western extension of the Hearne province, or a new Archean basement terrane separated from the Hearne province by an Early Proterozoic suture. The unique assemblage of 2.65 Ga basement, ~1.58 Ga felsic intrusive rocks, and the Middle Proterozoic Belt Supergroup can be used as a piercing point for the identification of the conjugate margin to Laurentia. Our new dating supports previous correlations of Australia's Gawler craton (2.55-2.65 Ga) and its 1590 Ma plutons with the Priest River complex basement gneisses. The Priest River complex basement may be a piece of eastern Australia stranded during rifting of the supercontinent Rodina in the Late Proterozoic.

Basement

Supercontinent

Rodinia

Laurentia

10.1139/e97-083

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Citations (84)

New high precision zircon ages from the Carboniferous of Scotland and their implications for the systematic bias between U-Pb and 40 Ar/ 39 Ar dating techniques

Geochimica et Cosmochimica Acta Supplement (2005)

R. R. Parrish Alison Monaghan Malcolm S. Pringle

Absolute dating

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A new method for analysing thin (≥2μm) zircon rims by LA-ICP-MS

GeCAS (2008)

John M. Cottle R. R. Parrish Matthew Horstwood

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New U - Pb and 40 Ar - 39 Ar Age Determinations Fromnorthern Ellesmere and Axel Heiberg Islands, Northwest Territories and Their Tectonic Significance

H P Trettin R. R. Parrish J C Roddick

10.4095/134161

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Citations (10)

Changing provenance areas of the Cenozoic Central Myanmar Basin sediments discriminated using Hf values of detrital zircons

EGU General Assembly Conference Abstracts (2010)

Cynthia A. Brezina R. A. J. Robinson R. R. Parrish Matthew Horstwood Michael I. Bird

(1) School of Geography & Geosciences, University of St Andrews, St Andrews, United Kingdom (rajr@st-andrews.ac.uk, +44 1334 463949), (2) NERC Isotope Geosciences Laboratory, Kingsley Dunham Centre, Keyworth, Nottingham, UK, (3) School of Earth and Environmental Sciences, James Cook University, Carins, Queensland, Australia , (4) Department of Geography, University of Pyay, Pyay, Myanmar, (5) Department of Geology, University of Mandalay, Mandalay, Myanmar

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Geochronological, Geochemical and Structural Constraints on the Initiation and Evolution of the Karakoram Fault, Ladakh, Northwest India

AGU Fall Meeting Abstracts (2003)

R. J. Phillips R. R. Parrish M. P. Searle

The significance and role of major strike-slip faults during continental deformation is a major source of debate among geologists and geophysicists. In the last thirty years two end-member views of deformation have evolved, each offering a profoundly different philosophy of continental tectonics. While one end-member view suggests that regional deformation is distributed through a continuously deforming upper mantle with an overlying brittle carapace (e.g. England and Houseman, 1986), the other interprets deformation as constrained by slip on major discontinuities at the lithospheric scale (e.g. Armijo et al., 1986; Peltzer et al., 1989).

Classification of discontinuities

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