The origin of Ninetyeast Ridge: palaeomagnetic constraints from ODP Leg 121

Citation:
Klootwijk, CT, Gee JS, Peirce JW, Smith GM.  1992.  The origin of Ninetyeast Ridge: palaeomagnetic constraints from ODP Leg 121. Journal of Southeast Asian Earth Sciences. 7:247-252.

Abstract:

Palaeomagnetic results from a lower Turonian to Middle Eocene ash-rich sedimentary sequence on Broken Ridge (ODP Sites 752–755) and ash and basalt sequences on Ninetyeast Ridge (90ER) (Sites 756–758) (1) support a Kerguelen hotspot origin for the 90ER volcanic pile; (2) are consistent with models for a large-scale southward jump of the Southeast Indian Ridge (SEIR) west of the 90ER at about 58 Ma; and (3) suggest a possible Amsterdam-St Paul hotspot origin for magnetic overprints on the 90ER.

Notes:

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DOI:

10.1016/0743-9547(92)90004-u