Magnetic expression of the continent-ocean boundary between the western margin of Australia and the eastern Indian Ocean.

J. J. Veevers, J. W. Tayton, B. D. Johnson, L. Hansen

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A comprehensive review of the Early Cretaceous seafloor-spreading magnetic anomalies (M0 to M10) in the eastern Indian Ocean leads to the isolation of a distinctive magnetic anomaly at the continent-ocean boundary (COB). The COB anomaly at the rifted margin is modelled by modifying the magnetization of the oldest oceanic block of the seafloor-spreading sequence adjacent to the continental crust; in places, the COB anomaly is flanked by smaller anomlalies modelled as rift-related dykes in the adjacent continental crust. The amplitude of the COB anomaly, commonly twice or more that of the adjacent oceanic magnetic anomalies, is due either to a thicker or a more intensely magnetized source. The COB anomaly at the transform-faulted margin is modelled by a thick vertical body that extends 10 km seaward of the COB.-from Authors

Original languageEnglish
Pages (from-to)106-120
Number of pages15
JournalJournal of Geophysics - Zeitschrift fur Geophysik
Volume56
Issue number2
Publication statusPublished - 1985

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