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Petrology, chemistry, and isotopic composition of submarine volcanoes in the southern Mariana Arc
T. H. Dixon and R. J. Stern
Petrology, chemistry, and isotopic composition of submarine volcanoes in the southern Mariana Arc
Geological Society of America Bulletin (October 1983) 94 (10): 1159-1172
Petrology, chemistry, and isotopic composition of submarine volcanoes in the southern Mariana Arc
Geological Society of America Bulletin (October 1983) 94 (10): 1159-1172
Index Terms/Descriptors
- alkaline earth metals
- basalts
- chemical composition
- dacites
- data
- fractional crystallization
- genesis
- geochemistry
- igneous rocks
- island arcs
- isotopes
- lava
- magmas
- major elements
- Mariana Islands
- metals
- Micronesia
- mineral composition
- Nd-144/Nd-143
- neodymium
- Oceania
- Pacific Ocean
- partial melting
- petrology
- rare earths
- seamounts
- Sr-87/Sr-86
- stable isotopes
- strontium
- trace elements
- volcanic rocks
- West Pacific
- Esmeralda Bank
- Zealandia Bank
Latitude & Longitude
Abstract
Four submarine volcanoes; dredge samples. Major- and trace-elements (REE); mineral compositions. Nd and Sr isotopic data ( (super 143) Nd/ (super 144) Nd = 0.5130-0.5131; (super 87) Sr/ (super 86) Sr = 0.7032-0.7035) indicate a mantle source for the Mariana Arc lavas similar in isotopic characteristics to sources for ocean islands. Spatial distribution in magmatic characteristics coincides with a structural break in the arc near 16 degrees N.--Modified journal abstract.
ISSN: 0016-7606
EISSN: 1943-2674
Coden: BUGMAF
Serial Title: Geological Society of America Bulletin
Serial Volume: 94
Serial Issue: 10
Title: Petrology, chemistry, and isotopic composition of submarine volcanoes in the southern Mariana Arc
Affiliation: Jet Propul. Lab.,
Pasadena, CA,
United States
Pages: 1159-1172
Published: 198310
Text Language: English
Publisher: Geological Society of America (GSA),
Boulder, CO,
United States
References: 76
Accession Number: 1983-056009
Categories: Igneous and metamorphic petrologyGeochemistry of rocks, soils, and sediments
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 8 anal., 7 tables, sketch maps
N14°00'00" - N17°00'00", E144°30'00" - E146°15'00"
Secondary Affiliation: Carnegie Inst. Washington,
USA,
United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Update Code: 1983
