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GEOREF RECORD
Composition of the Samail ocean crust
John S. Pallister and Robert T. Gregory
Composition of the Samail ocean crust
Geology (Boulder) (November 1983) 11 (11): 638-642
Composition of the Samail ocean crust
Geology (Boulder) (November 1983) 11 (11): 638-642
Index Terms/Descriptors
Latitude & Longitude
Abstract
The plutonic rocks of the Samail ophiolite formed in a spreading-ridge magma chamber repeatedly replenished by primitive magma. The average parent magma was in equilibrium with most early-formed cumulus minerals from the ophiolite and is very similar to primitive mid-ocean ridge basalt. The average parent magma is basaltic (in contrast to the picritic melts proposed as parents for some ophiolites), but field evidence suggests that individual batches of magma varied in composition because of mantle processes. The primary mantle melts were probably picritic, but were probably not erupted on the seafloor.--Modified journal abstract.
ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 11
Serial Issue: 11
Title: Composition of the Samail ocean crust
Affiliation: U. S. Geol. Surv.,
United States
Pages: 638-642
Published: 198311
Text Language: English
Publisher: Geological Society of America (GSA),
Boulder, CO,
United States
References: 26
Accession Number: 1983-061196
Categories: Igneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 4 anal., 1 table
N17°00'00" - N27°00'00", E52°30'00" - E60°00'00"
Secondary Affiliation: Ariz. State Univ.,
USA,
United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute.
Update Code: 1983
Program Name: USGSOPNon-USGS publications with USGS authors