Provenance of Proterozoic garnet-biotite gneiss recovered from Elan Bank, Kerguelen Plateau, southern Indian Ocean

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doi: 10.1130/0091-7613(2001)029<0235:POPGBG>2.0.CO;2
Author(s): Nicolaysen, Kirsten; Bowring, Samuel; Frey, Frederick; Weis, Dominique; Ingle, Stephanie; Pringle, Malcolm S.; Coffin, Millard F.; Antretter, M.; Arndt, N.; Barling, Jane; Boehm, F.; Borre, M.; Coxall, H.; Damasceno, Dimitri; Damuth, J.; Delius, H.; Duncan, Robert A.; Inokuchi, H.; Keszthelyi, L.; Mahoney, J.; Moore, C. L.; Müller, R. Dietmar; Neal, C.; Reusch, D.; Saccocia, P.; Teagle, D.; Wähnert, V.; Wallace, P.; Wise, S. W., Jr.; Zhao, X.
Ocean Drilling Program, Leg 183, Shipboard Scientific Party, College Station, TX
Author Affiliation(s): Primary:
Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States
Université Libre de Bruxelles, Belgium
Scottish Universities Environmental Research Centre, United Kingdom
University of Texas at Austin, United States
Volume Title: Geology (Boulder)
Source: Geology (Boulder), 29(3), p.235-238. Publisher: Geological Society of America (GSA), Boulder, CO, United States. ISSN: 0091-7613 CODEN: GLGYBA
Note: In English. With GSA Data Repository Item 2001024. 39 refs.; illus., incl. strat. col., sketch maps
Summary: At Elan Bank of the Kerguelen Plateau in the southeast Indian Ocean, Leg 183 of the Ocean Drilling Program recovered clasts of garnet-biotite gneiss in a fluvial conglomerate intercalated with basalt flows. U-Pb and Pb-Pb dates of zircons and monazites in these clasts and an overlying sandstone range from 534 to 2547 Ma, which is much older than the surrounding Indian Ocean seafloor. These dates show that old continental crust resides in the shallow crust of the oceanic Kerguelen Plateau and that the breakup of Gondwana dispersed continental fragments into the nascent Indian Ocean lithosphere.
Year of Publication: 2001
Research Program: ODP Ocean Drilling Program
Key Words: 03 Geochronology; 18 Geophysics, Solid-Earth; Absolute age; Antarctic Ocean; Biotite gneiss; Clastic rocks; Clasts; Conglomerate; Continental drift; Crust; Dates; Elan Bank; Garnet-biotite gneiss; Gneisses; Gondwana; Indian Ocean; Kerguelen Plateau; Large igneous provinces; Leg 183; Lithosphere; Metamorphic rocks; Monazite; Nesosilicates; ODP Site 1137; Ocean Drilling Program; Oceanic crust; Orthosilicates; Pb/Pb; Phosphates; Plateaus; Precambrian; Proterozoic; Provenance; Sandstone; Sedimentary rocks; Silicates; Southern Indian Ocean; U/Pb; Upper Precambrian; Zircon; Zircon group
Coordinates: S565000 S565000 E0680536 E0680536
Record ID: 2001021650
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States