Universität zu Köln

Fulop, R-H, Codilean, A. T., Wilcken, K. M., Cohen, T. J., Fink, D., Smith, A. M., Yang, B., Levchenko, V. A., Wacker, L., Marx, S. K., Stromsoe, N., Fujioka, T. and Dunai, T. J. (2020). Million-year lag times in a post-orogenic sediment conveyor. Sci. Adv., 6 (25). WASHINGTON: AMER ASSOC ADVANCEMENT SCIENCE. ISSN 2375-2548

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Abstract

Understanding how sediment transport and storage will delay, attenuate, and even erase the erosional signal of tectonic and climatic forcings has bearing on our ability to read and interpret the geologic record effectively. Here, we estimate sediment transit times in Australia's largest river system, the Murray-Darling basin, by measuring downstream changes in cosmogenic Al-26/Be-10/C-14 ratios in modern river sediment. Results show that the sediments have experienced multiple episodes of burial and reexposure, with cumulative lag times exceeding 1 Ma in the downstream reaches of the Murray and Darling rivers. Combined with low sediment supply rates and old sediment blanketing the landscape, we posit that sediment recycling in the Murray-Darling is an important and ongoing process that will substantially delay and alter signals of external environmental forcing transmitted from the sediment's hinterland.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Fulop, R-H UNSPECIFIED UNSPECIFIED UNSPECIFIED Codilean, A. T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wilcken, K. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cohen, T. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fink, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Smith, A. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Yang, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Levchenko, V. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wacker, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Marx, S. K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Stromsoe, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fujioka, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dunai, T. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-331620
DOI:	10.1126/sciadv.aaz8845
Journal or Publication Title:	Sci. Adv.
Volume:	6
Number:	25
Date:	2020
Publisher:	AMER ASSOC ADVANCEMENT SCIENCE
Place of Publication:	WASHINGTON
ISSN:	2375-2548
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language COSMOGENIC NUCLIDES; DENUDATION RATES; BE-10; AL-26; ISOTOPE; RIVER; EROSION; UNIVERSITY; TRANSPORT; CLIMATE Multiple languages Multidisciplinary Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/33162