Modelling astronomical climate signals in fluvial stratigraphy
Youwei Wang (TU Delft - Applied Geology)
J. E.A. Storms (TU Delft - Applied Geology)
A. Martinius (TU Delft - Applied Geology, Equinor ASA)
Hemmo A. Abels (TU Delft - Applied Geology)
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Abstract
Orbital climate forcing is demonstrated to result in cyclic changes as reflected in the catchment, including precipitation, temperature, vegetation, sediment supply and water discharge. All of these are known to largely impact alluvial architecture. Climate change related to the 21-kyr precession cycle was proposed as driver of regularly-alternating river avulsion and overbank phases in the Eocene Willwood Formation of the Bighorn Basin, Wyoming, USA (Abels et al. 2013; 2016). This study aims to explore the conditions that are favourable for these climate cyclic signals to be preserved in the fluvial stratigraphy.