Geophysical evidence for widespread Cenozoic bottom current activity from the continental margin of Nova Scotia, Canada
作者： D. Calvin Campbell , David C. Mosher
DOI: 10.1016/J.MARGEO.2015.10.005
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摘要: Abstract Two-dimensional and three-dimensional multichannel seismic reflection data are utilized to examine previously unrecognized contourite depositional systems along the continental margin of Nova Scotia, Canada. Prior this study these features were thought be limited extent in area. The new show that drifts widespread with greatest drift development during Late Miocene Pliocene. Giant sediment waves form stacked, aggrading sequences bedforms their is linked pre-existing seafloor morphology. Small developed locally throughout late Paleogene Neogene, either southwest down-current obstacles or channel fills. Major erosional pulses regional markers; first rise Early Oligocene, then slope Three-dimensional erosion surfaces preserve along-slope amplitude anomalies, two-dimensional, low-relief waves, barchanoid bedforms. geophysical evidence implies a northeast-to-southwest, bottom current influenced Cenozoic patterns
sci-hub.se 参考文章(78)
D. C. Campbell, D. C. Mosher, Middle to Late Miocene Slope Failure and the Generation of a Regional Unconformity Beneath the Western Scotian Slope, Eastern Canada Springer, Dordrecht. pp. 645- 655 ,(2010) , 10.1007/978-90-481-3071-9_52
David J. W. Piper, Late Cenozoic evolution of the continental margin of eastern Canada ,(2005)
M.A. Arthur, S.P. Srivastava, M. Kaminski, R. Jarrard, J. Osler, Seismic stratigraphy and history of deep circulation and sediment drift development in Baffin Bay and the Labrador Sea Proceedings of the Ocean Drilling Program: Scientific Results , 105 pp. 957-988. (1989). pp. 957- 988 ,(1989) , 10.2973/ODP.PROC.SR.105.118.1989
Brian E. Tucholke, Gregory S. Mountain, Seismic Stratigraphy, Lithostratigraphy and Paleosedimentation Patterns in the North American Basin Deep Drilling Results in the Atlantic Ocean: Continental Margins and Paleoenvironment. pp. 58- 86 ,(2013) , 10.1029/ME003P0058
Lubomir F. Jansa, Paul Enos, Brian E. Tucholke, Felix M. Gradstein, Robert E. Sheridan, Mesozoic-Cenozoic Sedimentary Formations of the North American Basin; Western North Atlantic Deep Drilling Results in the Atlantic Ocean: Continental Margins and Paleoenvironment. pp. 1- 57 ,(2013) , 10.1029/ME003P0001
T. Nielsen, P.C. Knutz, A. Kuijpers, Chapter 16 Seismic Expression of Contourite Depositional Systems Developments in Sedimentology. ,vol. 60, pp. 301- 321 ,(2008) , 10.1016/S0070-4571(08)10016-4
L.V. Worthington, On the North Atlantic Circulation ,(1977)
D.G. Masson, R.B. Wynn, Sediment waves and bedforms Elsevier. ,(2008)
William R. Normark, Roy Sparkes, David J. W. Piper, Late Cenozoic Stratigraphy of the Central Scotian Slope, Eastern Canada Bulletin of Canadian Petroleum Geology. ,vol. 35, pp. 1- 11 ,(1987) , 10.35767/GSCPGBULL.35.1.001
Kenneth G Miller, James D Wright, Miriam E Katz, Bridget S Wade, James V Browning, Benjamin S Cramer, Yair Rosenthal, Climate threshold at the Eocene-Oligocene transition: Antarctic ice sheet influence on ocean circulation LATE EOCENE EARTH: HOTHOUSE ICEHOUSE, AND IMPACTS , 452 pp. 169-178. (2009). ,vol. 452, pp. 169- 178 ,(2009) , 10.1130/2009.2452(11)