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dc.contributor.authorZahirovic, Sabin
dc.contributor.authorFlament, Nicolas
dc.contributor.authorMuller, R. Dietmar
dc.contributor.authorSeton, Maria
dc.contributor.authorGurnis, Michael
dc.date.accessioned2019-08-09
dc.date.available2019-08-09
dc.date.issued2016-09-13
dc.identifier.citationZahirovic, S., Flament, N., Dietmar Müller, R., Seton, M., and Gurnis, M. ( 2016), Large fluctuations of shallow seas in low‐lying Southeast Asia driven by mantle flow, Geochem. Geophys. Geosyst., 17, 3589– 3607, doi:10.1002/2016GC006434.en_AU
dc.identifier.urihttp://hdl.handle.net/2123/20882
dc.descriptionWe thank Sierd Cloetingh, Xi Liu, and Laurent Husson for constructive reviews that helped improve the manuscript. Figures were constructed using Generic Mapping Tools [Wessel and Smith, Wessel et al.,], GPlates (www.gplates.org) [Boyden et al.,], TimeScale Creator, and ArcGIS. Numerical models were carried out on the Sun Constellation VAYU cluster of the Australian National Computational Infrastructure. The original CitcomS software was obtained from CIG, Computational Infrastructure for Geodynamics (http://geodynamics.org). We thank J. Golonka and M. Pubellier for discussions on regional and global paleogeographic and plate reconstructions. The data used are listed in the references, tables, supplements and file repository at ftp://ftp.earthbyte.org/Data_Collections/Zahirovic_etal_Sundaland_DynamicTopography.zip and ftp://ftp.earthbyte.org/Data_Collections/Muller_etal_2016_AREPS/Muller_etal_AREPS_Supplement.zip.en_AU
dc.description.abstractThe Sundaland continental promontory, as the core of Southeast Asia, is one of the lowest lying continental regions, with half of the continental area presently inundated by a shallow sea. The role of mantle convection in driving long-wavelength topography and vertical motion of the lithosphere in this region has often been ignored when interpreting regional stratigraphy, including a widespread Late Cretaceous-Eocene unconformity, despite a consensus that Southeast Asia is presently situated over a large-amplitude dynamic topography low resulting from long-term post-Pangea subduction. We use forward numerical models to link mantle flow with surface tectonics and compare predicted trends of dynamic topography with eustasy and regional paleogeography to determine the influence of mantle convection on regional basin histories. A Late Cretaceous collision of Gondwana-derived terranes with Sundaland choked the active margin, leading to slab breakoff and a ∼10–15 Myr-long subduction hiatus. A subduction hiatus likely resulted in several hundred meters of dynamic uplift and emergence of Sundaland between ∼80 and 60 Ma and may explain the absence of a Late Cretaceous-Eocene sedimentary record. Renewed subduction from ∼60 Ma reinitiated dynamic subsidence of Sundaland, leading to submergence from ∼40 Ma despite falling long-term global sea levels. Our results highlight a complete “down-up-down” dynamic topography cycle experienced by Sundaland, with transient dynamic topography manifesting as a major regional unconformity in sedimentary basins. © 2016. American Geophysical Union. All Rights Reserved.en_AU
dc.description.sponsorshipS.Z. was supported by an Australian Postgraduate Award, a University of Sydney Vice Chancellor's Research Scholarship and ARC grant IH130200012. N.F. was supported by ARC IH130200012. R.D.M. and M.S. were supported by ARC grants FL0992245 and FT130101564, respectively. M.G. was partially supported by Statoil ASA and by the National Science Foundation under grants CMMI-1028978, EAR-1161046, and EAR-1247022en_AU
dc.language.isoen_AUen_AU
dc.publisherAmerican Geophysical Unionen_AU
dc.relationARC - IH130200012, ARC -FL0992245, FT130101564,en_AU
dc.rights© 2016. American Geophysical Union. All Rights Reserved.en_AU
dc.subjectdynamic topographyen_AU
dc.subjectgeodynamicsen_AU
dc.subjectmantle convectionen_AU
dc.subjectSoutheast Asiaen_AU
dc.subjectSundalanden_AU
dc.subjecttectonicsen_AU
dc.titleLarge fluctuations of shallow seas in low-lying Southeast Asia driven by mantle flowen_AU
dc.typeArticleen_AU
dc.subject.asrc040402en_AU
dc.subject.asrc040313en_AU
dc.identifier.doihttps://doi.org/10.1002/2016GC006434
dc.type.pubtypePublisher versionen_AU


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