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GEOREF RECORD

Glass in garnet pyroxenite xenoliths from Kaula Island, Hawaii; product of infiltration of host nephelinite

Michael O. Garcia and A. A. Presti
Glass in garnet pyroxenite xenoliths from Kaula Island, Hawaii; product of infiltration of host nephelinite
Geology (Boulder) (October 1987) 15 (10): 904-906

Abstract

Garnet-bearing, mantle-derived pyroxenites have been found at a new locality in Hawaii, Kaula Island. They occur as xenoliths in a nephelinite tuff. Some of the pyroxenites contain basaltic glasses, a common feature in mantle-derived xenoliths. Results of petrography, mineral chemistry, and least-squares mixing calculations show that the glasses are products of infiltration of the host nephelinite into the xenoliths and partial assimilation of garnet, spinel, and clinopyroxene. These results should encourage others to thoroughly test petrographically viable explanations for glasses in xenoliths before invoking absent phases or metasomatic fluids as explanations for the glasses.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 15
Serial Issue: 10
Title: Glass in garnet pyroxenite xenoliths from Kaula Island, Hawaii; product of infiltration of host nephelinite
Affiliation: Univ. Hawaii, Hawaii Inst. Geophys., Honolulu, HI, United States
Pages: 904-906
Published: 198710
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 16
Accession Number: 1987-078985
Categories: Igneous and metamorphic petrologyGeochemistry of rocks, soils, and sediments
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Hawaii Inst. Geophys.; Contrib. No. 1894
Illustration Description: illus. incl. 2 tables, sketch map
N21°30'00" - N22°00'00", W161°30'00" - W160°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute.
Update Code: 1987
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