Astronomically forced lake-level fluctuations with impact on sand-body distribution of the oligocene Huagang Formation in the Xihu Depression, east China sea shelf basin
Jianwei Wang
The Late Oligocene Huagang Formation in the Xihu Depression, East China Sea Shelf Basin, records typical braided river delta deposits. However, the influence of astronomical forcing on sand-body distribution remains unclear. Based on core, logging, and seismic data, subaqueous distributary channels of braided river deltas were identified and multi-scale lake-level fluctuations were reconstructed. The main findings findings are: (1) The upper Huagang Formation records stable 1.2 Myr long obliquit