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PB, SR AND BE-10 ISOTOPIC STUDIES OF VOLCANIC-ROCKS FROM THE NORTHERN MARIANA-ISLANDS - IMPLICATIONS FOR MAGMA GENESIS AND CRUSTAL RECYCLING IN THE WESTERN PACIFIC

Abstract:

We report Sr and Pb isotope analyses for an extensive suite of volcanic rocks from the N. Mariana arc together with Sr and Pb isotope analyses of sediments from the nearby Mariana and Nauru basins. In addition ten of the most recent volcanic samples were analysed for 10Be. The Sr isotope compositions cluster tightly around 87Sr 86Sr = 0.7035 being slightly but significantly higher than the Pacific ocean floor basalts on either side of the arc and agreeing well with previous data. In contrast...

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Publication status:
Published

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Journal:
GEOCHIMICA ET COSMOCHIMICA ACTA
Volume:
49
Issue:
9
Pages:
1925-1930
Publication date:
1985-01-01
DOI:
ISSN:
0016-7037
URN:
uuid:2124a552-5de1-4b82-a032-5d286ebfae22
Source identifiers:
170073
Local pid:
pubs:170073
Language:
English

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