Widths of modern arc-trench gaps proportional to past duration of igneous activity in associated magmatic arcs

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10 June 1973

journal article
Published by American Geophysical Union (AGU) in Journal of Geophysical Research

Vol. 78 (17), 3376-3389
https://doi.org/10.1029/jb078i017p03376

Abstract

No abstract available

Keywords

ARE EM- PLACED AT UPPER CRUSTAL LEVELS BY COMBINED PROCESSES OF ERUPTION AND INTRUSION. THIS CRUSTAL MAGMATISM BUILDS THE DOMINANTLY IGNEOUS STRUC- TURES OF THE MAGMATIC ARCS THAT STAND NEAR THE E
OR FROM BOTH SOURCES. THESE MAGMAS
DOWNWARD MOVEMENT ALONG COURSES MARKED ROUGHLY BY INCLINED SEISMIC ZONES PROMOTES THE GENERATION OF MAGMAS FROM THE CRUSTAL PARTS OF DESCENDING SLABS
PERHAPS AUGMENTED BY CONTRIBUTIONS FROM THE LOWER CRUST THROUGH WHICH THEY RISE
FROM THE OVERLYING ASTHENO- SPHERE
SUBDUCTION ZONE

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