Kerguelen hotspot magma output since 130 Ma

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doi: 10.1093/petrology/43.7.1121
Author(s): Coffin, Millard F.; Pringle, Malcolm S.; Duncan, Robert A.; Gladczenko, T. P.; Storey, M.; Müller, R. Dietmar; Gahagan, L. A.
Author Affiliation(s): Primary:
University of Tokyo, Ocean Research Institute, Tokyo, Japan
Japan Marine Science and Technology Center, Japan
University of Texas at Austin, United States
Scottish Universities Environmental Research Centre, United Kingdom
Oregon State University, United States
Dynamic Graphics, United States
Danish Lithosphere Center, Denmark
University of Sydney, Australia
Volume Title: Journal of Petrology
Source: Journal of Petrology, 43(7), p.1121-1139. Publisher: Oxford University Press, Oxford, United Kingdom. ISSN: 0022-3530 CODEN: JPTGAD
Note: In English; illus., incl. 2 tables, sketch map
Summary: The Kerguelen hotspot has produced basalt for ∼ 130 m.y. and new ages enable the magmatic output to be calculated through time. Maximum output postdates the initial surface manifestation of the hotspot as well as the break-up between Antarctica and India by at least 15 m.y. with high rates of magmatic eruption from 120 to 95 m.y. Two alternatives to the standard mantle plume paradigm are proposed, one involving multiple plume sources, the other a single but dismembered plume source. New Ar-Ar ages are given for the Bunbury basalts (SW Australia), the Rajmahal basalts (India), Indian and Antarctic lamprophyres and the Kerguelen basalts.
Year of Publication: 2002
Research Program: ODP Ocean Drilling Program
Key Words: 05 Petrology, Igneous and Metamorphic; 18 Geophysics, Solid-Earth; Antarctic Plate; Basalts; Basement; Broken Ridge; Cretaceous; Hot spots; Igneous rocks; Indian Plate; Kerguelen Plateau; Large igneous provinces; Leg 183; Magmas; Mantle; Mantle plumes; Mesozoic; Mid-ocean ridge basalts; ODP Site 1136; ODP Site 1137; ODP Site 1138; ODP Site 1139; ODP Site 1140; ODP Site 1141; ODP Site 1142; Ocean Drilling Program; Plate tectonics; Volcanic rocks
Coordinates: S600000 S320000 E0980000 E0630000
Record ID: 2003010529
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom