Structure of young upper crust at the East Pacific Rise near 9 deg 30 N

Details Structure of young upper crust at the East Pacific Rise near 9 deg 30 N Structure of young upper crust at the East Pacific Rise near 9 deg 30 N

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19.1045c&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 19, no. 10, May 22, 1992, p. 1045-1048. Research supported by U.S. Navy.

Physics

71

Earth Crust, Ocean Bottom, Pacific Ocean, Structural Properties (Geology), Volcanology, Calderas, Lava, Rock Intrusions

Scientific paper

Eight on-bottom seismic refraction experiments are analyzed in an effort to resolve the structure of the emplacement zone of lavas and dikes at the fast-spreading East Pacific Rise. The results suggest that the volcanic section doubles in thickness within about 1 km of the axial summit caldera (ASC) due to the emplacement of lava that either overflows the ASC or is transported through lateral tube conduits, and the depth to the top of the sheeted dike complex increases from about 160 m within the ASC to about 340 m, a kilometer away on the flank.

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