Very high energy sedimentation (supratidal hurricane deposits) and Mid-Holocene highstand on carbonate platforms, Andros, Bahamas: An alternative view

Jan, Françoise G. Bourrouilh-Le

doi:10.1016/j.sedgeo.2005.12.032

Cited by 11 publications

(11 citation statements)

References 62 publications

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“…Small disparities in the timing (on the scale of a few hundreds of years) and amplitude (by up to + 2 m) of the highstand between these areas are inferred to result from hydroisostatic effects and mantle rheology (Woodroffe and Horton, 2005;Milne et al, 2009;Stattegger et al, 2013). These new limits as to the timing of the mid-to late Holocene sealevel highstand in the Persian Gulf also compares favourably with previously proposed, though, often, less well-constrained, ages for the transgressive and regressive phases from SE Asia (Geyh et al, 1979;Woodroffe and McLean, 1990;Chappell and Polach, 1991;Tjia, 1996;Scoffin and Le Tissier, 1998;Yim and Huang, 2002;Stattegger et al, 2013), Australia (Flood and Frankel, 1989;Beaman et al, 1994;Baker and Haworth, 2000;Baker et al, 2001;Collins et al, 2006), the Pacific (Grossman et al, 1998;Nunn and Peltier, 2001) and the Atlantic (Gayes et al, 1992;Compton, 2001;Angulo et al, 2006;Bourrouilh-Le Jan, 2007;van Soelen et al, 2010) regions (Table 5).…”

Section: Regional and Global Contextsupporting

confidence: 63%

Late Quaternary sea-level changes of the Persian Gulf

Lokier¹,

Bateman

Larkin

et al. 2015

Quat. res.

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Section: Regional and Global Contextsupporting

confidence: 63%

Late Quaternary sea-level changes of the Persian Gulf

Lokier¹,

Bateman

Larkin

et al. 2015

Quat. res.

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“…Event beds in the cores are likely a result of predominantly coarse-grained sediment transport from the surrounding tidal carbonate flats into the holes during high-energy wave and storm surge events. In the shallow coastal waters around South Andros, both waves and currents are important to sediment transport (Black, 1933;Bourrouilh-Le Jan, 2007;Shinn et al, 1969). During minor storms and the waxing and waning stages of more intense storms, elevated current velocities in tidal channels create strong bottom shear stress values and bottom currents, which transport fine-grained sediment.…”

Section: Modern Event Calibrationmentioning

confidence: 99%

Intense Hurricane Activity Over the Past 1500 Years at South Andros Island, The Bahamas

Wallace

Donnelly

Hengstum

et al. 2019

Paleoceanog and Paleoclimatol

150

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Hurricanes cause substantial loss of life and resources in coastal areas. Unfortunately, historical hurricane records are too short and incomplete to capture hurricane-climate interactions on multi-decadal and longer timescales. Coarse-grained, hurricane-induced deposits preserved in blue holes in the Caribbean can provide records of past hurricane activity extending back thousands of years. Here we present a high resolution record of intense hurricane events over the past 1500 years from a blue hole on South Andros Island on the Great Bahama Bank. This record is corroborated by shorter reconstructions from cores collected at two nearby blue holes. The record contains coarse-grained event deposits attributable to known historical hurricane strikes within age uncertainties. Over the past 1500 years, South Andros shows evidence of four active periods of hurricane activity. None of these active intervals occurred in the past 163 years. We suggest that Intertropical Convergence Zone position modulates hurricane activity on the island based on a correlation with Cariaco Basin titanium concentrations. An anomalous gap in activity on South Andros Island in the early 13th century corresponds to a period of increased volcanism. The patterns of hurricane activity reconstructed from South Andros Island closely match those from the northeastern Gulf of Mexico but are anti-phased with records from New England. We suggest that either changes in local environmental conditions (e.g., SSTs) or a northeastward shift in storm tracks can account for the increased activity in the western North Atlantic when the Gulf of Mexico and southeastern Caribbean are less active.

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“…While the upper intertidal zone is flooded at every high tide, flooding of supratidal flats and marshes only occurs during exceptionally high tides and with storms, resulting in a sudden influx of sediment-laden water even far inland from the coastal zone (e.g., Roehl, 1967;Monty, 1972;Hardie, 1977;Boss and Neumann, 1993;Rankey et al, 2004;Bourrouilh-Le Jan, 2007). Important sediment influx covers up footprint-bearing surfaces.…”

Section: Incorporation Of Footprints Into the Sedimentary Recordmentioning

confidence: 99%

Formation and Taphonomy of Human Footprints in Microbial Mats of Present-Day Tidal-flat Environments: Implications for the Study of Fossil Footprints

Marty

Strasser

Meyer

2009

Ichnos

174

129

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This study concerns the formation, taphonomy, and preservation of human footprints in microbial mats of present-day tidal-flat environments. Due to differences in water content and nature of the microbial mats and the underlying sediment, a wide range of footprint morphologies was produced by the same trackmaker. Most true tracks are subjected to modification due to taphonomic processes, leading to modified true tracks. In addition to formation of biolaminites, microbial mats play a major role in the preservation of footprints on tidal flats. A footprint may be consolidated by desiccation or lithification of the mat, or by ongoing growth of the mat. The latter process may lead to the formation of overtracks. Among consolidated or (partially) lithified footprints found on present-day tidal flats, poorly defined true tracks, modified true tracks, and overtracks were most frequently encountered while unmodified and well-defined true tracks are rather rare. We suggest that modified true tracks and overtracks make up an important percentage of fossil footprints and that they may be as common as undertracks. However, making unambiguous distinctions between poorly defined true tracks, modified true tracks, undertracks, and overtracks in the fossil record will remain a difficult task, which necessitates systematic excavation of footprints combined with careful analysis of the encasing sediment.

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Very high energy sedimentation (supratidal hurricane deposits) and Mid-Holocene highstand on carbonate platforms, Andros, Bahamas: An alternative view

Cited by 11 publications

References 62 publications

Late Quaternary sea-level changes of the Persian Gulf

Late Quaternary sea-level changes of the Persian Gulf

Intense Hurricane Activity Over the Past 1500 Years at South Andros Island, The Bahamas

Formation and Taphonomy of Human Footprints in Microbial Mats of Present-Day Tidal-flat Environments: Implications for the Study of Fossil Footprints

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