气候变化领域集成服务门户(CCPortal): Martian landscapes of fluvial ridges carved from ancient sedimentary basin fill

CCPortal

DOI	10.1038/s41561-022-01058-2
	Martian landscapes of fluvial ridges carved from ancient sedimentary basin fill
	Cardenas, Benjamin T.; Lamb, Michael P.; Grotzinger, John P.
发表日期	2022
ISSN	1752-0894
EISSN	1752-0908
起始页码	871
结束页码	+
卷号	15 期号:11 页码:12
英文摘要	Large sedimentary basins contain archives of Earth history. It is unknown to what extent similar basins existed on Mars because there are few observations relating to the subsurface and it is difficult to identify buried deposits. Here, we used numerical simulations to show that landscapes of networks of topographic ridges that are abundant on the surface of Mars may represent erosional windows into thick, basin-filling river deposits that accumulated over long time spans. We used a numerical model to drive hillslope creep and differential erosion from the wind to simulate Mars-like exhumation processes acting on basin-filling fluvial strata, which we based on those buried in the Gulf of Mexico on Earth, as imaged using three-dimensional reflectance seismology. Simulations produced remarkably Martian landscapes in which the preferential erosion of mudstone relative to sandstone channel belts leads to the development of complex patterns of intersecting ridges. Our findings contrast to the existing view of ridged Martian landscapes as thin-skinned surface deposits preserving fluvial landscapes at a snapshot in time. Instead, the ridge cross-cutting patterns produced by the model reflect the exhumation of channel bodies at different stratigraphic levels, exposing basin strata accumulated over time scales of 500,000 years. Thus, we propose that fluvial ridges on Mars may expose an archive of long-lived aqueous processes. Numerical simulations of the exhumation of basin-filling river deposits suggest that ridge networks observed in Martian landscapes may represent erosional windows into sedimentary basins on Mars.
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000874422500003
来源期刊	NATURE GEOSCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272601
作者单位	California Institute of Technology; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park
推荐引用方式 GB/T 7714	Cardenas, Benjamin T.,Lamb, Michael P.,Grotzinger, John P.. Martian landscapes of fluvial ridges carved from ancient sedimentary basin fill[J],2022,15(11):12.
APA	Cardenas, Benjamin T.,Lamb, Michael P.,&Grotzinger, John P..(2022).Martian landscapes of fluvial ridges carved from ancient sedimentary basin fill.NATURE GEOSCIENCE,15(11),12.
MLA	Cardenas, Benjamin T.,et al."Martian landscapes of fluvial ridges carved from ancient sedimentary basin fill".NATURE GEOSCIENCE 15.11(2022):12.