Kiwi Leg 12

Kiwi Home Page

Cruise overview

Reading list


Data and Publications

Marine geology investigation of the Manihiki Plateau,
western Pacific Ocean

Bruce P. Luyendyk
Dept. Earth Science

The Manihiki Plateau is a submerged volcanic feature covering an immense area about the size of Texas in the southwest Pacific, east of the Samoa Islands. Investigations so far indicate it originated in Early Cretaceous time (ca. 125 million years ago) from the rapid outpouring of lavas onto the seafloor. It shares characteristics of other volcanic plateaus in the southwest Pacific including the Ontong-Java and Hikurangi Plateau. The latter submerged plateau, located adjacent to New Zealand, has been proposed to be a matching part of the Manihiki Plateau that rifted away from it via plate tectonics soon after formation. Other hypotheses state the plateaus evolved separately and were never connected.

Scientific party of KIWI LEG 12



Bruce Luyendyk Home Page
Date Last Modified: 4/7/98