Cold-climate slope deposits and landscape modifications of the Mid-Atlantic Coastal Plain, Eastern USA

摘要: Abstract The effects of Pleistocene cold-climate geomorphology are distributed across the weathered and eroded Mid-Atlantic Coastal Plain uplands from Wisconsinan terminal moraine south to Tidewater Virginia. Cold-climate deposits landscape modifications superimposed on antecedent landscapes old, Neogene upland gravels marine terraces that had been built during warm periods sea-level highstands. In New Jersey, sequences surficial define a long history repeating climate change events. To Delmarva Peninsula southern Maryland, most topography has obscured by Late deposits. These spatially variable collectively described as alloformation. alloformation includes time-transgressive details deterioration at least isotope stage (MIS) 4 through end MIS 2. Some landforms within may be young Younger Dryas. Southwards along trend Potomac River, these their climatic affinities become diffused. Virginia, continuum erosion appears product ‘normal’ temperate, climate-forced processes. more temperate in Virginia being partly covered Holocene alluvium bay mud.