About This Item

Share This Item

The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 54 (1970)

Issue: 11. (November)

First Page: 2032

Last Page: 2039

Title: Seismic-Reflection Profile Across Blake Escarpment near Great Abaco Canyon

Author(s): R. E. Sheridan (2), G. K. Elliott (2), B. L. Oostdam (2)

Abstract:

A reflection profile record across the Blake escarpment reveals the presence of a depression in a prominent reflecting horizon adjacent to the base of the escarpment. This depression, which is now buried beneath the overlying unconsolidated sediments, may be erosional in origin and may represent the ancient outer channel of Great Abaco Canyon. The drainage of this channel appears to be restricted along the base of the escarpment south of Great Abaco Canyon, with no apparent grading of the channel to a deeper level farther east. It is suggested that the restriction in drainage was caused by tectonic tilting of the prominent reflector toward the Blake escarpment when this horizon formed the sea floor. The tilting may be related to movements along a subsurface fault about 5 i (8 km) east of the escarpment bordering Great Abaco Island, and has a strike parallel with this escarpment.

Pay-Per-View Purchase Options

The article is available through a document delivery service. Explain these Purchase Options.

Watermarked PDF Document: $14
Open PDF Document: $24

AAPG Member?

Please login with your Member username and password.

Members of AAPG receive access to the full AAPG Bulletin Archives as part of their membership. For more information, contact the AAPG Membership Department at [email protected].