干旱区生态环境知识资源中心(Arid): Estimating the Age of Abandoned Alluvial Surfaces Using Morphologic Dating of Gully Incision

Arid

DOI	10.1029/2022JF006875
	Estimating the Age of Abandoned Alluvial Surfaces Using Morphologic Dating of Gully Incision
	Shmilovitz, Yuval; Shelef, Eitan; Wieler, Nimrod; Zhang, Huiping; Mushkin, Amit
通讯作者	Shmilovitz, Y
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
ISSN	2169-9003
EISSN	2169-9011
出版年	2023
卷号	128 期号:3
英文摘要	The age of abandoned alluvial surfaces is a key component in quantifying landscape evolution processes, tectonic activity, and paleoclimate. However, limited resources, restricted field accessibility, lacking dating material and analytical constraints are often encountered when dating such landforms. To help mitigate these limitations, we propose a new and complementary surface dating approach that is based on calculating the duration of gully incision into a surface since its abandonment using a locally calibrated landscape evolution model. The approach consists of calibration of incision model parameters for abandoned alluvial surfaces with known age and then using the calibrated model to calculate the time required for gully profiles to form on nearby undated alluvial surfaces as a proxy for surface abandonment. The approach was tested on previously dated late Pleistocene (34 and 70 ka) alluvial terraces in the hyper-arid Negev desert (Israel). Calibrated model parameters were within the range reported for incision models in arid regions worldwide and late Pleistocene surface abandonment ages were recovered to within 10% accuracy. In contrast, modeled durations for gully incision into an older mid-Pleistocene surface previously dated to 230-549 ka were grossly underestimated at < 120 ka. Field observations and approach tests indeed indicated that late Pleistocene model parameters should not be extrapolated as-is to model gully incision farther back through geologic time. Because the validity of the proposed ages depends on extrapolating the locally calibrated parameters of the incision model, we recommend that such dating be conducted with care and where assumptions will probably be valid.
英文关键词	alluvial surface landscape evolution model gully incision morphologic dating
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000946194300001
WOS关键词	QUATERNARY FAULT SCARPS ; RAINFALL INTENSITY ; LANDSCAPE RESPONSE ; EVOLUTION MODELS ; EROSION ; SOILS ; FAN ; DESERT ; VALLEY ; ISRAEL
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397359
推荐引用方式 GB/T 7714	Shmilovitz, Yuval,Shelef, Eitan,Wieler, Nimrod,et al. Estimating the Age of Abandoned Alluvial Surfaces Using Morphologic Dating of Gully Incision[J],2023,128(3).
APA	Shmilovitz, Yuval,Shelef, Eitan,Wieler, Nimrod,Zhang, Huiping,&Mushkin, Amit.(2023).Estimating the Age of Abandoned Alluvial Surfaces Using Morphologic Dating of Gully Incision.JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE,128(3).
MLA	Shmilovitz, Yuval,et al."Estimating the Age of Abandoned Alluvial Surfaces Using Morphologic Dating of Gully Incision".JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE 128.3(2023).