Periplatform drift: The combined result of contour current and off-bank transport along carbonate platforms

Betzler, Christian; Lindhorst, Sebastian; Eberli, Gregor P.; Lüdmann, Thomas; Möbius, Jürgen; Ludwig, J.; Schutter, Ilona; Wunsch, Marco; Reijmer, John J.G.; Hübscher, Christian

doi:10.1130/g35900.1

Cited by 83 publications

(105 citation statements)

References 15 publications

Supporting

Mentioning

104

Contrasting

Order By: Relevance

“…Correlation of hydroacoustic data with ODP Leg 166 core data (Fig. A to C) confirms that the uppermost of these reflections corresponds to the cemented interval of the high‐frequency sequence boundary S (SB S), which formed during the last sea‐level lowstand (Eberli et al ., ; Malone et al ., ; Betzler et al ., ). Radiocarbon dating yielded an age of 42·7 kyr cal bp for SB S at ODP site 1009 and younger than 10 kyr cal bp for the sediments overlaying SB S (Slowey et al ., ), which indicates a hiatus of ca 30 kyr.…”

Section: Resultsmentioning

confidence: 97%

“…Debris and small blocks of the MTC are colonized by deep‐sea corals (Betzler et al ., ; Lüdmann et al ., ), comparable to similar situations elsewhere in the Florida Straits (Correa et al ., ; Hebbeln & Wienberg, ). The deep‐sea corals form up to 25 m high mounds, which are elongated parallel to the current direction (Fig.…”

Section: Interpretation and Discussionmentioning

confidence: 99%

“…In addition to gravity‐driven processes, the present shape of the leeward slope of GBB is influenced by currents whereby slope angle increases with increasing bottom‐current velocity (Ball et al ., ; Correa et al ., ; Betzler et al ., ). In particular, contour currents are strongly responsible for the recent facies distribution and control the backstepping of the toe of slope at parts of the leeward slope of the GBB (Betzler et al ., ).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sedimentary dynamics along carbonate slopes (Bahamas archipelago)

et al. 2016

Self Cite

View full text Add to dashboard Cite

Hydroacoustic and sedimentological data in the Santaren Channel covering both the leeward slope of Great Bahama Bank and the windward slope of Cay Sal Bank allow new insights into carbonate platform slope sedimentation. The data document the interplay between depositional and erosive processes on both slopes through time and provide information on the current regime and its influence on the slope sedimentary processes. This study emphasizes the diversity and complexity of the slope morphology and the sediment distribution of the youngest high‐frequency sequence, which has developed since the last glacial maximum. The processes triggering slope failures and the formation of channels and gullies differ on both slopes. At the leeward slope of the Great Bahama Bank, extensive slope failures occurred primarily during sea‐level lowering following an interglacial. These slope failures created a slope morphology that channelizes the exported platform sediments during the subsequent highstand. At the windward slope of Cay Sal Bank, contour currents and the local tectonic regime are responsible for slope failures. During sea‐level lowstands, downwelling induces turbidity currents. The interaction of turbidity and contour currents leads to the formation of a system of furrows and slope‐parallel sediment ridges. The discovered heterogeneities in slope sedimentation improve the understanding of carbonate slope sedimentation and provide implications for sequence stratigraphic interpretation of carbonate platform slopes.

show abstract

Section: Resultsmentioning

confidence: 97%

Section: Interpretation and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sedimentary dynamics along carbonate slopes (Bahamas archipelago)

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…Postdrowning relict banks, which were submerged during these later stages, have elongated outlines indicating current shaping; active atolls of the Maldives have complex growth patterns, with a co-existence of bank margin progradation, aggradation, and backstepping (Betzler et al, 2009. Progradation is restricted to current sheltered areas, where periplatform drifts (Betzler et al, 2014) accumulate at the atolls flanks. Current-exposed flanks aggrade or step back.…”

Section: Introductionmentioning

confidence: 98%

The leaking bucket of a Maldives atoll: Implications for the understanding of carbonate platform drowning

et al. 2015

Self Cite

View full text Add to dashboard Cite

“…1). The onlapping wedge displays a 20-30 m deep moat at its top that is formed by plunging of sediment laden waters from the platform top (Betzler et al, 2014).…”

Section: Introductionmentioning

confidence: 99%