New Zealand Journal of Geology and Geophysics abstracts
Adakites from Solander Island, New Zealand
A. REAY
Department of Geology
University of Otago
P.O. Box 56
Dunedin, New Zealand
D. PARKINSON
Department of Geological Sciences
University of California at Santa Barbara
California 93106-9630, U.S.A.
Abstract The subduction related, island arc Pleistocene
volcano of Solander Island in Foveaux Strait is composed of adakite, a new rock
type first described from Adak Island in the Aleutian arc. Adakites are formed
by the partial fusion of young oceanic crust under eclogitic facies conditions.
Comparison with other adakite localities suggests that the oceanic crust
presently subducting at the nearby trench may be <25 Ma old.
Keywords adakite; Solander Island; Australian plate; Pacific
plate; subduction; island arc; heavy rare earth elements; downgoing slab
New Zealand Journal of Geology and Geophysics, 1997, Vol. 40: 121-126
0028-8306/97/4002-0121 $7.00/0 (c) The Royal Society of New Zealand
1997
PDF file of entire paper: medium quality (578K); (scanned from paper original: notes about this process)
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