The isostatic gravity anomaly: key to the evolution of the ocean-continent boundary at passive continental margins |
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| Authors: | PD Rabinowitz JL Labrecque |
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| Institution: | Lamont-Doherty Geological Observatory of Columbia University, Palisades, N.Y. 10964 USA |
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| Abstract: | Isostatic gravity highs bordering the passive continental margins are interpreted as resulting from oceanic basement highs. These basement elevations are relics of the transient phenomenon of a higher ridge axis elevation during early rifting. The steep landward gradient in the isostatic gravity field, generally associated with a magnetic edge effect anomaly, delineates the boundary between oceanic and continental basement. |
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