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As part of a survey of the United States continental rise seaward of the northern Baltimore Canyon Trough, four major depositional sequences were mapped on a grid of 2350km of multichannel seismic reflection profiles. The sequences, which range in age from Jurassic(?) to Quaternary, record a gradual sedimentary buildup of fine-grained onlapping and slope-front fill. A broad wedge of Jurassic-age(?) sediment up to 5 km thick was deposited seaward of a conspicuous platform. During the Cretaceous, the slope-rise transition became much gentler. The main constructional phase for the continental rise was during the Cenozoic. The Cenozoic rise section can be subdivided into two main sequences separated by a conspicuous unconformity. The final phase of rise construction was caused by widespread fluctuations in coastal onlap. These regressions resulted in deltaic outward-building on the shelf, extensive Pleistocene landward erosion of the slope, and the accumulation of a broad sedimentary apron on the rise. - from Authors
Additional Publication Details
Seismic stratigraphy and facies of continental slope and rise seaward of Baltimore Canyon Trough ( USA).
American Association of Petroleum Geologists Bulletin