Geophysical Investigations in the Emerged and Submerged Atlantic Coastal Plain

Research Article| January 01, 1956 GEOPHYSICAL INVESTIGATIONS IN THE EMERGED AND SUBMERGED ATLANTIC COASTAL PLAIN: PART X: CONTINENTAL SLOPE AND CONTINENTAL RISE SOUTH OF THE GRAND BANKS CHARLES R BENTLEY; CHARLES R BENTLEY LAMONT GEOLOGICAL OBSERVATORY, COLUMBIA UNIVERSITY, PALISADES, N. Y. Search for other works by this author on: GSW Google Scholar J. LAMAR WORZEL J. LAMAR WORZEL LAMONT GEOLOGICAL OBSERVATORY, COLUMBIA UNIVERSITY, PALISADES, N. Y. Search for other works by this author on: GSW Google Scholar Author and Article Information CHARLES R BENTLEY LAMONT GEOLOGICAL OBSERVATORY, COLUMBIA UNIVERSITY, PALISADES, N. Y. J. LAMAR WORZEL LAMONT GEOLOGICAL OBSERVATORY, COLUMBIA UNIVERSITY, PALISADES, N. Y. Publisher: Geological Society of America Received: 13 Oct 1954 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1956, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1956) 67 (1): 1–18. https://doi.org/10.1130/0016-7606(1956)67[1:GIITEA]2.0.CO;2 Article history Received: 13 Oct 1954 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation CHARLES R BENTLEY, J. LAMAR WORZEL; GEOPHYSICAL INVESTIGATIONS IN THE EMERGED AND SUBMERGED ATLANTIC COASTAL PLAIN: PART X: CONTINENTAL SLOPE AND CONTINENTAL RISE SOUTH OF THE GRAND BANKS. GSA Bulletin 1956;; 67 (1): 1–18. doi: https://doi.org/10.1130/0016-7606(1956)67[1:GIITEA]2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Seismic-refraction profiles shot on the continental rise and slope south of the Grand Banks show great sediment thickness which reaches a maximum of nearly 10 km about 90 km south of the 100-fathom curve and thins rapidly under the banks. Three sediment layers are present, with average velocities of 1.83, 2.47, and 3.97 km per second, the highest velocity layer constituting the major portion of the column. The basement is thickest under the south edge of the continental shelf, thinning to 2 or 3 km to the north and to the south. Its velocity averages 5.77 km/sec except on the southernmost profile where it is 6.70 km/sec. Sub-basement is reached on the three southernmost profiles at an average depth of about 13 km, the velocity decreasing from south to north from 7.76 km/sec to 7.24 km/sec. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.