Forces Shaping the Incredible Steep Slopes of Carbonate Platforms

Gregor Eberli - Rosenstiel School of Marine and Atmospheric Science

The ability to build very steep slopes is a characteristics of carbonate platforms. Microbially mediated fusing of grains and subsequent prismatic early cementation construct the margins of these edifices that are often obstacles for ocean currents along continental margins. Rock fall, margin collapse, slope canyons and slope failures are common features of carbonate slopes but cascading density currents as well as bottom and surface currents also shape the sediment distribution on the slope and in the adjacent basin. Depositional slope models largely ignore the current-related deposition. The talk will illustrate the extreme height of carbonate escarpments and the related processes using the carbonate platforms in the Florida Bahamas region.