Development of a passive transform margin: Côte d'Ivoire-Ghana transform margin - ODP Leg 159 preliminary results
The Côte d'Ivoire-Ghana transform margin is bounded to the south by a prominent marginal ridge. ODP Leg 159 shipboard analyses on sediments from four sites document three distinct transform margin sedimentary and tectonic stages of evolution: (1) an intracontinental stage of transform faulting recorded in deformed lacustrine to marine siliciclastic sequences; (2) a marginal ridge uplift stage, recorded by shallow water limestones, appears coeval with the passing of a hot, oceanic spreading center just south of the sediment wedge; and (3) cooling subsidence of the transform margin recorded in bathyal to abyssal sediments emphasizes a passive margin stage. These results are consistent with previously published models of evolution.
Publication Source (Journal or Book title)
Mascle, J., Lohmann, P., Lohmann, G., Clift, P., Akamaluk, T., Allerton, S., Ask, M., Barrera, E., Barton, E., Basile, C., Bellier, J., Benkhelil, J., Brantuoh, E., Edwards, R., Ewert, E., Goncalves, C., Janik, A., Holmes, M., Hisada, K., Lohmann, K., Morita, S., Mortera-Gutierrez, C., Norris, R., Oboh, F., Pletsch, T., Pickett, E., Ravizza, G., Shafik, S., Shin, I., Strand, K., Wagner, T., & Watkins, D. (1997). Development of a passive transform margin: Côte d'Ivoire-Ghana transform margin - ODP Leg 159 preliminary results. Geo-Marine Letters, 17 (1), 4-11. https://doi.org/10.1007/PL00007205