干旱区生态环境知识资源中心(Arid): Early-to-mid Miocene erosion rates inferred from pre-Dead Sea rift Hazeva River fluvial chert pebbles using cosmogenic Ne-21

Arid

DOI	10.5194/esurf-8-289-2020
	Early-to-mid Miocene erosion rates inferred from pre-Dead Sea rift Hazeva River fluvial chert pebbles using cosmogenic Ne-21
	Ben-Israel, Michal 1; Matmon, Ari 1; Hidy, Alan J.2; Avni, Yoav 3; Balco, Greg 4
通讯作者	Ben-Israel, Michal
来源期刊	EARTH SURFACE DYNAMICS
ISSN	2196-6311
EISSN	2196-632X
出版年	2020
卷号	8 期号:2 页码:289-301
英文摘要	In this work, we utilize a novel application of cosmogenic Ne-21 measurements in chert to compare exposure times measured in eroding surfaces in the central Jordanian Plateau with exposure times from chert pebbles transported by the Miocene Hazeva River. The Miocene Hazeva River was a large fluvial system (estimated catchment size > 100 000 km(2)) that drained the Arabian Plateau and Sinai Peninsula into the Mediterranean Sea during the early-to-mid Miocene. It was established after the rifting of the Red Sea uplifted the Arabian Plateau during the Oligocene. Following late-Miocene-to-early-Pliocene subsidence along the Dead Sea rift, the Hazeva drainage system was abandoned and dissected, resulting in new drainage divides on either side of the rift. We find modern erosion rates derived from cosmogenic Ne-21, Al-26, and (10) Be in exposed in situ chert nodules to be extremely slow (between 2-4 mm kyr(-1)). Comparison between modern and paleo-erosion rates, measured in chert pebbles, is not straightforward, as cosmogenic Ne-21 was acquired partly during bedrock erosion and partly during transport of these pebbles in the Hazeva River. However, Ne-21 exposure times calculated in Miocene cherts are generally shorter (ranging between 0(-0)(+59) and 242 +/- 113 kyr) compared to exposure times calculated in the currently eroding chert nodules presented here (269 +/- 49 and 378 +/- 76 kyr) and other chert surfaces currently eroding in hyperarid environments. Miocene exposure times are shorter even when considering that they account for bedrock erosion in addition to maintained transport along this large river. Shorter exposure times in Miocene cherts correspond to faster paleo-erosion rates, which we attribute to a combination of continuous surface uplift and significantly wetter climatic conditions during the early-to-mid Miocene.
类型	Article
语种	英语
国家	Israel ; USA
开放获取类型	gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000529394900001
WOS关键词	SUEZ RIFT ; RED-SEA ; DIFFUSION KINETICS ; DENUDATION RATES ; WESTERN MARGIN ; EXPOSURE AGES ; BE-10 ; EVOLUTION ; NUCLIDE ; DESERT
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
来源机构	Hebrew University of Jerusalem
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318985
作者单位	1.Hebrew Univ Jerusalem, Fredy & Nadine Hellmann Inst Earth Sci, IL-91904 Jerusalem, Israel; 2.Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94550 USA; 3.Geol Survey Israel, Yeshayahu Leibowitz 32, IL-96921 Jerusalem, Israel; 4.Berkeley Geochronol Ctr, Berkeley, CA 94709 USA
推荐引用方式 GB/T 7714	Ben-Israel, Michal,Matmon, Ari,Hidy, Alan J.,et al. Early-to-mid Miocene erosion rates inferred from pre-Dead Sea rift Hazeva River fluvial chert pebbles using cosmogenic Ne-21[J]. Hebrew University of Jerusalem,2020,8(2):289-301.
APA	Ben-Israel, Michal,Matmon, Ari,Hidy, Alan J.,Avni, Yoav,&Balco, Greg.(2020).Early-to-mid Miocene erosion rates inferred from pre-Dead Sea rift Hazeva River fluvial chert pebbles using cosmogenic Ne-21.EARTH SURFACE DYNAMICS,8(2),289-301.
MLA	Ben-Israel, Michal,et al."Early-to-mid Miocene erosion rates inferred from pre-Dead Sea rift Hazeva River fluvial chert pebbles using cosmogenic Ne-21".EARTH SURFACE DYNAMICS 8.2(2020):289-301.