Origin of the Willaumez-Manus Rise, Papua New Guinea

Details Origin of the Willaumez-Manus Rise, Papua New Guinea Origin of the Willaumez-Manus Rise, Papua New Guinea

Aug 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979e%26psl..44..247j&link_type=abstract

Earth and Planetary Science Letters, Volume 44, Issue 2, p. 247-260.

Physics

1

Scientific paper

The aseismic Willaumez-Manus Rise on the Bismarck Sea floor separates the Manus Basin from the New Guinea Basin. The rise does not appear to be an extinct spreading axis, or a remnant arc, but may be the result of excess magmatism possibly related to an inferred mantle hot spot beneath St. Andrew Strait. A preferred interpretation is that the rise is the raised edge of the New Guinea Basin, formed in response to a thermal anomaly beneath the extensional Manus Basin which formed later than the New Guinea Basin.

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