TY - CHAP
T1 - Sedimentary processes and facies on a high-latitude passive continental margin, Wilkes Land, East Antarctica
AU - Passchier, Sandra
AU - Ciarletta, Daniel J.
AU - Henao, Victor
AU - Sekkas, Vicky
N1 - Publisher Copyright:
© 2019 The Author(s).
PY - 2019
Y1 - 2019
N2 - The impact of high-latitude physical processes on the sedimentary geology of a passive continental margin is addressed using a sediment record from the Wilkes Land margin of Antarctica. We present sequence stratigraphic models based on analytical data and genetic interpretations of sedimentary facies assemblages observed in drill cores collected by the Integrated Ocean Drilling Program. The examination of drill cores within a previously published seismostratigraphic context enhances the resolution of the sequence stratigraphic interpretations. Weaker tidal forcing, a stronger Coriolis effect and more pronounced seasonality are some of the physical processes that affect erosion and sedimentation at high latitudes, even if ice sheets are absent. In addition, the presence of an ice sheet affects erosion rates, crustal motion, and atmospheric and ocean circulation, with major implications for the development of depositional systems. As a result, high-latitude, ice-covered, passive margins show distinct sedimentary facies associations and their interpretation requires the application of a different suite of sequence stratigraphic models from those applied to low-latitude continental margins.
AB - The impact of high-latitude physical processes on the sedimentary geology of a passive continental margin is addressed using a sediment record from the Wilkes Land margin of Antarctica. We present sequence stratigraphic models based on analytical data and genetic interpretations of sedimentary facies assemblages observed in drill cores collected by the Integrated Ocean Drilling Program. The examination of drill cores within a previously published seismostratigraphic context enhances the resolution of the sequence stratigraphic interpretations. Weaker tidal forcing, a stronger Coriolis effect and more pronounced seasonality are some of the physical processes that affect erosion and sedimentation at high latitudes, even if ice sheets are absent. In addition, the presence of an ice sheet affects erosion rates, crustal motion, and atmospheric and ocean circulation, with major implications for the development of depositional systems. As a result, high-latitude, ice-covered, passive margins show distinct sedimentary facies associations and their interpretation requires the application of a different suite of sequence stratigraphic models from those applied to low-latitude continental margins.
UR - http://www.scopus.com/inward/record.url?scp=85064209158&partnerID=8YFLogxK
U2 - 10.1144/SP475.3
DO - 10.1144/SP475.3
M3 - Chapter
AN - SCOPUS:85064209158
T3 - Geological Society Special Publication
SP - 181
EP - 201
BT - Geological Society Special Publication
PB - Geological Society of London
ER -