Portal de Periódicos da CAPES

New aerogeophysical study of the Eurasia Basin and Lomonosov Ridge: Implications for basin development

2003; Geological Society of America; Volume: 31; Issue: 9 Linguagem: Inglês

10.1130/g19528.1

1943-2682

J. M. Brozena, V. A. Childers, Lawrence A. Lawver, Lisa M. Gahagan, R. Forsberg, Jan Inge Faleide, Olav Eldholm,

Geological formations and processes

Research Article| September 01, 2003 New aerogeophysical study of the Eurasia Basin and Lomonosov Ridge: Implications for basin development J.M. Brozena; J.M. Brozena 1Naval Research Laboratory, Code 7421, 4555 Overlook Avenue Southwest, Washington, D.C. 20375, USA Search for other works by this author on: GSW Google Scholar V.A. Childers; V.A. Childers 1Naval Research Laboratory, Code 7421, 4555 Overlook Avenue Southwest, Washington, D.C. 20375, USA Search for other works by this author on: GSW Google Scholar L.A. Lawver; L.A. Lawver 2University of Texas Institute for Geophysics, 4412 Spicewood Springs Road, no. 600, Austin, Texas 78759, USA Search for other works by this author on: GSW Google Scholar L.M. Gahagan; L.M. Gahagan 2University of Texas Institute for Geophysics, 4412 Spicewood Springs Road, no. 600, Austin, Texas 78759, USA Search for other works by this author on: GSW Google Scholar R. Forsberg; R. Forsberg 3Kort and Matrikelstyrelsen (KMS), Rentemestervej 8, 2400 København NV, Denmark Search for other works by this author on: GSW Google Scholar J.I. Faleide; J.I. Faleide 4Department of Earth Science, University of Bergen, Allegaten 41, N-5007 Bergen, Norway Search for other works by this author on: GSW Google Scholar O. Eldholm O. Eldholm 4Department of Earth Science, University of Bergen, Allegaten 41, N-5007 Bergen, Norway Search for other works by this author on: GSW Google Scholar Author and Article Information J.M. Brozena 1Naval Research Laboratory, Code 7421, 4555 Overlook Avenue Southwest, Washington, D.C. 20375, USA V.A. Childers 1Naval Research Laboratory, Code 7421, 4555 Overlook Avenue Southwest, Washington, D.C. 20375, USA L.A. Lawver 2University of Texas Institute for Geophysics, 4412 Spicewood Springs Road, no. 600, Austin, Texas 78759, USA L.M. Gahagan 2University of Texas Institute for Geophysics, 4412 Spicewood Springs Road, no. 600, Austin, Texas 78759, USA R. Forsberg 3Kort and Matrikelstyrelsen (KMS), Rentemestervej 8, 2400 København NV, Denmark J.I. Faleide 4Department of Earth Science, University of Bergen, Allegaten 41, N-5007 Bergen, Norway O. Eldholm 4Department of Earth Science, University of Bergen, Allegaten 41, N-5007 Bergen, Norway Publisher: Geological Society of America Received: 24 Jan 2003 Revision Received: 29 May 2003 Accepted: 30 May 2003 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2003) 31 (9): 825–828. https://doi.org/10.1130/G19528.1 Article history Received: 24 Jan 2003 Revision Received: 29 May 2003 Accepted: 30 May 2003 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation J.M. Brozena, V.A. Childers, L.A. Lawver, L.M. Gahagan, R. Forsberg, J.I. Faleide, O. Eldholm; New aerogeophysical study of the Eurasia Basin and Lomonosov Ridge: Implications for basin development. Geology 2003;; 31 (9): 825–828. doi: https://doi.org/10.1130/G19528.1 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 In 1998 and 1999, new aerogeophysical surveys of the Arctic Ocean's Eurasia Basin produced the first collocated gravity and magnetic measurements over the western half of the basin. These data increase the density and extend the coverage of the U.S. Navy aeromagnetic data from the 1970s. The new data reveal prominent bends in the isochrons that provide solid geometrical constraints for plate reconstructions. Tentative identification of anomaly 25 in the Eurasia Basin links early basin opening to spreading in the Labrador Sea before the locus of spreading in the North Atlantic shifted to the Norwegian-Greenland Sea. With the opening of the Labrador Sea, Greenland began ∼200 km of northward movement relative to North America and eventually collided with Svalbard, Ellesmere Island, and the nascent Eurasia ocean basin. Both gravity and magnetic data sets reconstructed to times prior to chron 13 show a prominent linear anomaly oriented orthogonal to the spreading center and immediately north of the Yermak Plateau and Morris Jesup Rise. This anomaly may mark the locus of shortening and possibly subduction as Greenland collided with the nascent Eurasia Basin and impinged upon the southern Gakkel Ridge. This collision may have contributed to volcanism on the Morris Jesup Rise. By chron 13, Greenland had ended its northward motion and had become fixed to North America, and the plateau north of Greenland had rifted apart to become the Morris Jesup Rise and the Yermak Plateau. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.