Earth and Planetary Science Letters, June 15, 2015, Vol.420, p.66(7)
To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.epsl.2015.03.032 Byline: Peter D. Clift, Sascha Brune, Javier Quinteros Abstract: Rifted continental lithosphere subsides as a consequence of combined crustal thinning and mantle lithosphere cooling yet basins on some continental margins experience anomalous subsidence events that postdate active extension. Deep basins on the northern margin of the South China Sea, notably the Baiyun Sag, show basement subsidence accelerating after [approximately equal to]21 Ma, postdating extension by several million years. We combine geophysical observations and numerical forward modeling to show that loading of the offshore basins by increased sediment flux caused by faster onshore erosion following Early Miocene monsoon intensification is a viable trigger for ductile flow after the cessation of active extension. This illustrates that offshore basin dynamics at continental margins with weak crust can be controlled by onshore surface processes in a newly recognized form of climate-tectonic coupling. Author Affiliation: (a) Department of Geology and Geophysics, Louisiana State University, Baton Rouge, LA 70803, USA (b) EarthByte Group, School of Geosciences, University of Sydney, NSW 2006, Australia (c) German Research Centre for Geosciences GFZ, 14473 Potsdam, Germany Article History: Received 6 November 2014; Revised 12 March 2015; Accepted 15 March 2015 Article Note: (miscellaneous) Editor: A. Yin
Geophysics – Analysis ; Geophysics – Environmental Aspects ; Mantle (Geology) – Analysis ; Mantle (Geology) – Environmental Aspects ; Continental Margins – Analysis ; Continental Margins – Environmental Aspects ; Tectonics – Analysis ; Tectonics – Environmental Aspects ; Sediments (Geology) – Analysis ; Sediments (Geology) – Environmental Aspects
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