干旱区生态环境知识资源中心(Arid): Constraining Plateau Uplift in Southern Africa by Combining Thermochronology, Sediment Flux, Topography, and Landscape Evolution Modeling

Arid

DOI	10.1029/2020JB021243
	Constraining Plateau Uplift in Southern Africa by Combining Thermochronology, Sediment Flux, Topography, and Landscape Evolution Modeling
	Stanley, Jessica R.; Braun, Jean; Baby, Guillaume; Guillocheau, Francois; Robin, Cecile; Flowers, Rebecca M.; Brown, Roderick; Wildman, Mark; Beucher, Romain
通讯作者	Stanley, JR (corresponding author), Univ Idaho, Dept Geol Sci, Moscow, ID 83843 USA. ; Stanley, JR (corresponding author), Helmholtz Ctr Potsdam, GFZ German Res Ctr Geosci, Potsdam, Germany.
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
ISSN	2169-9313
EISSN	2169-9356
出版年	2021
卷号	126 期号:7
英文摘要	The uplift of the southern African Plateau with its average elevations of similar to 1,000 m is often attributed to mantle processes, but there are conflicting theories for the timing and drivers of topographic development. Evidence for most proposed plateau development histories is derived from continental erosion histories, marine stratigraphic architecture, or landscape morphology. Here we use a landscape evolution model to integrate a large data set of low-temperature thermochronometry, sediment flux rates to surrounding marine basins, and current topography for southern Africa. We explore three main hypotheses for surface uplift: (a) southern Africa was already elevated by the Early Cretaceous before Gondwana breakup, (b) uplift and continental tilting occurred during the mid-Cretaceous, or (c) uplift occurred during the mid to late Cenozoic. We test which of these three intervals of plateau development are plausible by using an inversion method to constrain the range in erosional and uplift model parameters that can best reproduce the observed data. Results indicate four regions of parameter space that fall into two families of uplift histories are most compatible with the data. Both uplift families have limited initial topography with some topographic uplift and continental tilting starting at similar to 90-100 Ma. In one acceptable scenario, nearly all of the topography, >1,300 m, is created at this time with little Cenozoic uplift. In the other acceptable scenario, similar to 400-800 m of uplift occurs in the mid-Cretaceous with another similar to 500-1,000 m of uplift in the mid-Cenozoic. The two model scenarios have different geodynamic implications, which we compare to geodynamic models.
类型	Article
语种	英语
开放获取类型	hybrid, Green Published, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000678880700050
WOS关键词	APATITE FISSION-TRACK ; CENTRAL NAMIB DESERT ; DYNAMIC TOPOGRAPHY ; DENUDATION RATES ; PASSIVE-MARGIN ; CONTINENTAL-MARGIN ; ATLANTIC MARGIN ; BREAK-UP ; THERMAL EVOLUTION ; CRUSTAL XENOLITHS
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363900
作者单位	[Stanley, Jessica R.] Univ Idaho, Dept Geol Sci, Moscow, ID 83843 USA; [Stanley, Jessica R.; Braun, Jean] Helmholtz Ctr Potsdam, GFZ German Res Ctr Geosci, Potsdam, Germany; [Braun, Jean] Univ Potsdam, Inst Erd & Umweltwissensch, Potsdam, Germany; [Baby, Guillaume] Univ Paris, Inst Phys Globe Paris, CNRS, Paris, France; [Guillocheau, Francois; Robin, Cecile] Univ Rennes 1, CNRS, Geosci Rennes UMR 6118, Rennes, France; [Flowers, Rebecca M.] Univ Colorado, Dept Geol Sci, Boulder, CO 80309 USA; [Brown, Roderick; Wildman, Mark] Univ Glasgow, Sch Geog & Earth Sci, Glasgow, Lanark, Scotland; [Beucher, Romain] Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT, Australia
推荐引用方式 GB/T 7714	Stanley, Jessica R.,Braun, Jean,Baby, Guillaume,et al. Constraining Plateau Uplift in Southern Africa by Combining Thermochronology, Sediment Flux, Topography, and Landscape Evolution Modeling[J],2021,126(7).
APA	Stanley, Jessica R..,Braun, Jean.,Baby, Guillaume.,Guillocheau, Francois.,Robin, Cecile.,...&Beucher, Romain.(2021).Constraining Plateau Uplift in Southern Africa by Combining Thermochronology, Sediment Flux, Topography, and Landscape Evolution Modeling.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,126(7).
MLA	Stanley, Jessica R.,et al."Constraining Plateau Uplift in Southern Africa by Combining Thermochronology, Sediment Flux, Topography, and Landscape Evolution Modeling".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 126.7(2021).