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Recognition and importance of amalgamated sandy meander belts in the continental rock record

2015; Geological Society of America; Volume: 43; Issue: 8 Linguagem: Inglês

10.1130/g36743.1

1943-2682

Adrian J. Hartley, Amanda Owen, Alistair Swan, Gary S. Weissmann, Barbara I. Holzweber, John Howell, Gary Nichols, L. A. Scuderi,

Geology and Paleoclimatology Research

Research Article| August 01, 2015 Recognition and importance of amalgamated sandy meander belts in the continental rock record Adrian J. Hartley; Adrian J. Hartley 1Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen AB24 3UE, UK Search for other works by this author on: GSW Google Scholar Amanda Owen; Amanda Owen 1Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen AB24 3UE, UK Search for other works by this author on: GSW Google Scholar Alistair Swan; Alistair Swan 1Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen AB24 3UE, UK Search for other works by this author on: GSW Google Scholar Gary S. Weissmann; Gary S. Weissmann 2University of New Mexico, Department of Earth and Planetary Sciences, MSC03 2040, Albuquerque, New Mexico 87131-0001, USA Search for other works by this author on: GSW Google Scholar Barbara I. Holzweber; Barbara I. Holzweber 1Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen AB24 3UE, UK *Current address: Exploration Reservoir Consultants (ERCL), Dragon Court, 15 Station Road, Henley-on-Thames, Oxon RG9 1AT, UK. Search for other works by this author on: GSW Google Scholar John Howell; John Howell 1Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen AB24 3UE, UK Search for other works by this author on: GSW Google Scholar Gary Nichols; Gary Nichols 3Nautilus Ltd., Ashfields Farm Industrial Estate, Priors Court Road, Hermitage, Berkshire RG18 9XY, UK Search for other works by this author on: GSW Google Scholar Louis Scuderi Louis Scuderi 2University of New Mexico, Department of Earth and Planetary Sciences, MSC03 2040, Albuquerque, New Mexico 87131-0001, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Adrian J. Hartley 1Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen AB24 3UE, UK Amanda Owen 1Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen AB24 3UE, UK Alistair Swan 1Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen AB24 3UE, UK Gary S. Weissmann 2University of New Mexico, Department of Earth and Planetary Sciences, MSC03 2040, Albuquerque, New Mexico 87131-0001, USA Barbara I. Holzweber *Current address: Exploration Reservoir Consultants (ERCL), Dragon Court, 15 Station Road, Henley-on-Thames, Oxon RG9 1AT, UK. 1Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen AB24 3UE, UK John Howell 1Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen AB24 3UE, UK Gary Nichols 3Nautilus Ltd., Ashfields Farm Industrial Estate, Priors Court Road, Hermitage, Berkshire RG18 9XY, UK Louis Scuderi 2University of New Mexico, Department of Earth and Planetary Sciences, MSC03 2040, Albuquerque, New Mexico 87131-0001, USA Publisher: Geological Society of America Received: 25 Feb 2015 Revision Received: 24 May 2015 Accepted: 27 May 2015 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2015 Geological Society of America Geology (2015) 43 (8): 679–682. https://doi.org/10.1130/G36743.1 Article history Received: 25 Feb 2015 Revision Received: 24 May 2015 Accepted: 27 May 2015 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Adrian J. Hartley, Amanda Owen, Alistair Swan, Gary S. Weissmann, Barbara I. Holzweber, John Howell, Gary Nichols, Louis Scuderi; Recognition and importance of amalgamated sandy meander belts in the continental rock record. Geology 2015;; 43 (8): 679–682. doi: https://doi.org/10.1130/G36743.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Meandering fluvial channels and their meander belts are common in modern continental sedimentary basins, yet compose a minor constituent of the reported fluvial rock record. Here we document exhumed amalgamated meander belt deposits from the upper Jurassic Morrison Formation, Utah (United States). The size of the amalgamated meander belt (9000 km2) is significantly larger than any documented previously and comparable in size to those from modern sedimentary basins. We describe a representative outcrop of sandy point bar deposits that shows features considered characteristic of both braided and meandering fluvial systems. Lateral accretion sets compose <5% of the outcrop area, yet point bar morphology is clearly visible in plan view. We suggest that difficulties in the identification of sandy, amalgamated meander belt deposits indicate that they have gone largely unrecognized in the rock record. Their recognition has important implications for basin-scale reconstructions of fluvial systems and interpretation of tectonic setting. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.