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Characteristics of three turbidites, Hispaniola-Caicos Basin

1976; Geological Society of America; Volume: 87; Issue: 9 Linguagem: Inglês

10.1130/0016-7606(1976)87 2.0.co;2

1943-2674

KIM R. W. BENNETTS, Orrin H. Pilkey,

Geological formations and processes

Research Article| September 01, 1976 Characteristics of three turbidites, Hispaniola-Caicos Basin KIM R. W. BENNETTS; KIM R. W. BENNETTS 1Department of Geology, Duke University, Durham, North Carolina 27708, and Duke University Marine Laboratory, Beaufort, North Carolina 28516 Search for other works by this author on: GSW Google Scholar ORRIN H. PILKEY ORRIN H. PILKEY 1Department of Geology, Duke University, Durham, North Carolina 27708, and Duke University Marine Laboratory, Beaufort, North Carolina 28516 Search for other works by this author on: GSW Google Scholar Author and Article Information KIM R. W. BENNETTS 1Department of Geology, Duke University, Durham, North Carolina 27708, and Duke University Marine Laboratory, Beaufort, North Carolina 28516 ORRIN H. PILKEY 1Department of Geology, Duke University, Durham, North Carolina 27708, and Duke University Marine Laboratory, Beaufort, North Carolina 28516 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1976) 87 (9): 1291–1300. https://doi.org/10.1130/0016-7606(1976)87 2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation KIM R. W. BENNETTS, ORRIN H. PILKEY; Characteristics of three turbidites, Hispaniola-Caicos Basin. GSA Bulletin 1976;; 87 (9): 1291–1300. doi: https://doi.org/10.1130/0016-7606(1976)87 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 The absence of analyses of complete sedimentary units resulting from single turbidity currents has been a major shortcoming of turbidite studies. Previous studies have extrapolated single-flow characteristics by averaging attributes of groups of flows. Distinctive source areas surrounding the 9,500-km2, 4,100-m-deep Hispaniola-Caicos Basin allow long-distance correlation of beds and afford an unusual opportunity to study turbidites resulting from single-flow events.On the basis of data from closely spaced piston cores, three individual turbidites have been mapped in their entirety. Two of the flows contain abundant terrigenous material; they originated from Hispaniola or Cuba. The third flow is almost exclusively bioclastic; it originated from Great Inagua Carbonate Bank. All of the flows traveled about 100 km across the flat basin floor. They range in total volume from 8.9 × 108 m3 to 30.8 ×108 m3. The flows cover areas ranging from 3,500 to 5,200 km2, indicating the importance of lateral spreading on the basin floor. Maximum thicknesses, including upper pelitic intervals, are well over 200 cm.The flow deposits generally thin away from their basin entry points but thicken by ponding in basin depressions. Marked horizontal sorting occurs on the basis of constituent particle density and size. In two flow deposits, Bouma interval structure units A through E are present everywhere. In the third turbidite, the complete Bouma sequence is present only near the basin entry point, and the upper flow regime units (A and B) disappear within 30 km of the basin edge. 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.