Browsing by Author "Pan, Yu-Yen"
Now showing 1 - 1 of 1
Results Per Page
Sort Options
- ItemInsolation-paced sea level and sediment flux during the early Pleistocene in Southeast Asia([London] : Macmillan Publishers Limited, part of Springer Nature, 2021) Vaucher, Romain; Dashtgard, Shahin E.; Horng, Chorng-Shern; Zeeden, Christian; Dillinger, Antoine; Pan, Yu-Yen; Setiaji, Romy A.; Chi, Wen-Rong; Löwemark, LudvigGlobal marine archives from the early Pleistocene indicate that glacial-interglacial cycles, and their corresponding sea-level cycles, have predominantly a periodicity of ~ 41 kyrs driven by Earth’s obliquity. Here, we present a clastic shallow-marine record from the early Pleistocene in Southeast Asia (Cholan Formation, Taiwan). The studied strata comprise stacked cyclic successions deposited in offshore to nearshore environments in the paleo-Taiwan Strait. The stratigraphy was compared to both a δ18O isotope record of benthic foraminifera and orbital parameters driving insolation at the time of deposition. Analyses indicate a strong correlation between depositional cycles and Northern Hemisphere summer insolation, which is precession-dominated with an obliquity component. Our results represent geological evidence of precession-dominated sea-level fluctuations during the early Pleistocene, independent of a global ice-volume proxy. Preservation of this signal is possible due to the high-accommodation creation and high-sedimentation rate in the basin enhancing the completeness of the stratigraphic record.