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Exuma Canyon

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Journal Article
Journal: Geology
Published: 01 March 1984
Geology (1984) 12 (3): 147–150.
... slopes in the Bahamas. We conclude from the study that (1) a deep-water sequence crops out in Exuma Canyon west of the Bahama Escarpment between 2,600 and 3,800 m; it includes Valanginian through Cenomanian chalk and limestone presumably deposited in a re-entrant between the platforms; (2) beneath...
Image
(A) Bathymetric map and backscatter map at the mouth of Great Abaco Canyon, Northeast Bahamas, Atlantic Ocean (black-circled and yellow-circled, respectively). (B) Chirp seismic profile showing fault beneath large depressions and slope break deposit (SBD). (C) Bathymetric map and backscatter map showing depressions (black-circled and yellow-circled, respectively) in Exuma Canyon (east of Bahamas, Atlantic Ocean) and at its mouth including the location of core CAR2KS19 (orange circle) collected in the slope break deposits following the most upstream Exuma upper Canyon chute. (D) Core collected in a depression at the mouth of Exuma Canyon, showing three very fine sand carbonate turbidites into a slightly to moderately carbonated mud. TWT—two-way time.
Published: 02 July 2022
and backscatter map showing depressions (black-circled and yellow-circled, respectively) in Exuma Canyon (east of Bahamas, Atlantic Ocean) and at its mouth including the location of core CAR2KS19 (orange circle) collected in the slope break deposits following the most upstream Exuma upper Canyon chute. (D) Core
Image
General map of the Bahamian seafloor showing the distribution of deep-seated depressions at the toe of the Blake Bahama Escarpment (BBE). Some are aligned along the BBE, others are in large canyon axes. The depressions located farthest seaward of Exuma Sound could potentially be related to oceanic crust morphologies rather than to carbonate morphologies. Dashed line represents the BBE. White circles represents Bahamian depressions analyzed in this paper. GAC—Great Abaco Canyon; GBC—Great Bahama Canyon; EC—Exuma Canyon; LAC—Little Abaco Canyon.
Published: 02 July 2022
Figure 2. General map of the Bahamian seafloor showing the distribution of deep-seated depressions at the toe of the Blake Bahama Escarpment (BBE). Some are aligned along the BBE, others are in large canyon axes. The depressions located farthest seaward of Exuma Sound could potentially be related
Image
—Northern end of seismic line 356 at mouth of Exuma Sound, where line 356 ties with line 357. This part of line 356 runs down axis of Exuma Canyon, which funnels sediment southward from Exuma Sound parallel to Long Island. Eastward exit of sediment from Exuma is blocked by a sill extending from Cat Island. Vertical scale is two-way traveltime.
Published: 01 June 1987
Figure 8 —Northern end of seismic line 356 at mouth of Exuma Sound, where line 356 ties with line 357. This part of line 356 runs down axis of Exuma Canyon, which funnels sediment southward from Exuma Sound parallel to Long Island. Eastward exit of sediment from Exuma is blocked by a sill
Image
—Eastern end of line 357 with tie to line 356. Sequence of Figures 6-9 illustrate tie of Exuma section to dredge hauls from Bahama Escarpment and from within Exuma Canyon. Tie of reflection B2 to reflection 2 indicates a Cretaceous and younger age for lettered horizons in Exuma Sound. Vertical scale is two-way traveltime.
Published: 01 June 1987
Figure 9 —Eastern end of line 357 with tie to line 356. Sequence of Figures 6 - 9 illustrate tie of Exuma section to dredge hauls from Bahama Escarpment and from within Exuma Canyon. Tie of reflection B2 to reflection 2 indicates a Cretaceous and younger age for lettered horizons in Exuma Sound
Journal Article
Journal: AAPG Bulletin
Published: 01 June 1987
AAPG Bulletin (1987) 71 (6): 719–736.
...Figure 8 —Northern end of seismic line 356 at mouth of Exuma Sound, where line 356 ties with line 357. This part of line 356 runs down axis of Exuma Canyon, which funnels sediment southward from Exuma Sound parallel to Long Island. Eastward exit of sediment from Exuma is blocked by a sill...
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Journal Article
Journal: GSA Bulletin
Published: 02 July 2022
GSA Bulletin (2023) 135 (3-4): 743–752.
... and backscatter map showing depressions (black-circled and yellow-circled, respectively) in Exuma Canyon (east of Bahamas, Atlantic Ocean) and at its mouth including the location of core CAR2KS19 (orange circle) collected in the slope break deposits following the most upstream Exuma upper Canyon chute. (D) Core...
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Journal Article
Published: 01 December 1980
Journal of Sedimentary Research (1980) 50 (4): 1121–1147.
... the closely following turbidity current covered the whole basin floor. Eventually, the entire flow became channeled as it traveled out Exuma Sound through the axial canyon connecting to the abyssal floor of the Atlantic Ocean. Nannofossil zonation and planktonic foraminiferal data suggest this layer...
Journal Article
Journal: AAPG Bulletin
Published: 01 May 1973
AAPG Bulletin (1973) 57 (5): 841–857.
..., the sound is connected directly to the Atlantic Ocean by a deep-water, sediment-free canyon. Coral-algal debris extends the encompassing plateau above sea level, creating islands of low relief, which bound the sound on the west-southwest (Exuma Cays), on the northeast (Eleuthera and Little San Salvador...
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Journal Article
Journal: AAPG Bulletin
Published: 01 July 1976
AAPG Bulletin (1976) 60 (7): 1037–1053.
..., biologically, hydrologically, and structurally, also appear to have been active in this channel. Such constructional processes have resulted in the buildup of deep-canyon flanks and the lateral growth of parts of the deep-bank margin. 3 Department of Geology and Marine Laboratory, Duke University...
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Journal Article
Published: 01 March 2011
Journal of Sedimentary Research (2011) 81 (3): 185–206.
... of the tidal-bar motif with broader and more irregular sandbars, relatively narrow channels, and few small islands occurs at the northern end of Exuma Sound (Schooners). Sands associated with tidal channels and the numerous islands of the Exumas chain along the western edge of Exuma Sound occur primarily...
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Journal Article
Published: 01 January 2001
Rocky Mountain Geology (2001) 36 (2): 81–98.
... progradation and/or development of offshore peritidal carbonate buildups The Middle Cambrian Death Canyon Limestone of the Gros Ventre Group contains both small-scale (typically less than a few meters thick) and larger scale (up to 10 m) cycles of shoaling-upward carbonates. The formation can be divided...
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Journal Article
Journal: AAPG Bulletin
Published: 01 April 1978
AAPG Bulletin (1978) 62 (4): 693–704.
... , 1970 , Great Bahama Canyon : Geol. Soc. America Bull. , v. 81 , p. 1061 – 1078 . Ball , M. M. , R. Gaudet , and C. E. Leist , 1968 , Sparker reflection seismic measurements in Exuma Sound, Bahamas : Am. Geophys. Union Trans. , v. 49 , p. 196 – 197 . Ball , M. M...
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Journal Article
Journal: AAPG Bulletin
Published: 01 December 1985
AAPG Bulletin (1985) 69 (12): 2130–2147.
...-water carbonates of the Central Basin platform, the Late Pennsylvanian (Cisco/Canyon) is represented by drastically thin, shaly strata that are overlain by a thick sequence of Permian (Wolfcamp) shale and limestone ( Figure 2 ). As used here, the stratigraphic names Atoka, Strawn, Canyon, Cisco...
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Journal Article
Journal: Geology
Published: 15 February 2024
Geology (2024) 52 (5): 347–351.
... insights into early life and ocean evolution on Earth, and perhaps on other planets, such as Mars. So far, the only occurrences of modern open-marine stromatolites are in the Exuma islands of the Bahamas ( Dill et al., 1986 ; Visscher et al., 1998 ; Reid et al., 1995 , 2000 ) and in Shark Bay, Australia...
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Journal Article
Published: 13 April 2020
Canadian Journal of Earth Sciences (2020) 57 (10): 1193–1219.
... or seaway within the Great American Carbonate Bank called the Richardson trough. Eleven detailed stratigraphic sections through the Road River Group along the upper canyon of the Peel River are compiled and integrated with geological mapping, facies analysis, carbonate and organic carbon isotope...
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Journal Article
Published: 01 July 2002
Journal of Sedimentary Research (2002) 72 (4): 462–475.
... composition, and sea level for the several Bahamian basins like Tongue of the Ocean and Exuma Sound ( Neumann and Land 1975 ; Droxler and Schlager 1985 ; Haak and Schlager 1989 ; Reijmer et al. 1992 ). Eberli and Ginsburg (1987, 1989) , Eberli et al. (1997a), as well as Pomar (1993) and more recently...
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Journal Article
Published: 01 June 1984
Bulletin of Canadian Petroleum Geology (1984) 32 (2): 162–189.
... 993.0 840.0 153.0 Creek 4 (Whittaker) 12 Prairie 726.5+ 169.5 Creek 7 (Whittaker) 334,0 368.5 22.0 250.0 79,5+ (b) 13 West 14h0+ 27 .0+ 114.0 93.0 6.0+ Headless (b) 14 Second 250.0+ Canyon 3 (b) 15 West 94.5+ 94.5+ 305.0 150.0 Tundra 1 (b) 16 North 288,0+ 567.1 247.5+ Tundra 17 North 35.5+ 1143.8 Tundra...
Journal Article
Published: 14 January 2025
Journal of Sedimentary Research (2025) 95 (1): 28–48.
..., P.D., and Schlager, W. 1980 , Carbonate debris sheets and turbidites, Exuma Sound, Bahamas : Journal of Sedimentary Petrology , v. 50 , p. 1121 – 1148 , doi: 10.1306/212F7B99-2B24-11D7-8648000102C1865D . Cuthbertson, A., Dong, P., King, S., and Davies, P...
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Journal Article
Journal: AAPG Bulletin
Published: 01 May 1971
AAPG Bulletin (1971) 55 (5): 687–704.
...). Diapiric structures, possibly of salt, reported from Exuma Sound ( Ball et al. , 1968 ), suggest that the area was shallower in the past. An alternate explanation for the channels is that they are downfaulted grabens ( Schuchert, 1935 ; Talwani et al. , 1960 ). 2 Woods Hole Oceanographic...
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