#1: Dominant Depositional Processes in the Pliocene Taiwan Strait
The Western Foreland Basin underlies the Taiwan Strait. In project 1, we used outcrop descriptions and sediment geochemistry (Carbon-13 of organic carbon in mudstone) to determine the dominant controls on sedimentation in the Pliocene. From this work, we developed a theoretical model for the tropical cyclone (typhoon) beds in the strait, and showed that typhoons completely dominate sedimentation in shallow-marine positions in the strait.
2. Dashtgard, S.E., Löwemark, L., Wang, P.-L., Setiaji, R.A., Vaucher, R., 2021. Geochemical evidence of tropical cyclone controls on shallow-marine sedimentation (Pliocene, Taiwan). Geology 49, 566-570. https://doi.org/10.1130/G48586.1
1. Dashtgard, S.E., Löwemark, L., Vaucher, R., Pan, Y.-Y., Pilarczyk, J.E., Castelltort, S., 2020. Tropical cyclone deposits in the Pliocene Taiwan Strait: Processes, examples, and conceptual model. Sedimentary Geology 405, 105687.. https://doi.org/10.1016/j.sedgeo.2020.105687
#2: Paleoclimate Signals in Early Pleistocene Shallow-Marine Strata, Taiwan
In this work, we use cyclostratigraphic analysis of Early Pleistocene shallow-marine records to demonstrate that it is indeed possible to preserve precession signals through the Early Pleistocene. This is possible through the use of detailed outcrop logging, and high-resolution paleomagnetic and biostratigraphic controls on depositional age.
1. Vaucher, R., Dashtgard, S.E., Horng, C.-S., Zeeden, C., Dillinger, A., Pan, Y.-Y., Setiaji, R.A., Chi, W.-R., Löwemark, L., 2021. Insolation-paced sea level and sediment flux during the early Pleistocene in Southeast Asia. Scientific Reports 11, 16707. https://doi.org/10.1038/s41598-021-96372-x