Geological Society of America

231 D24. Lessons from the Deep: Recent Developments in Geodynamics (Posters)

Wednesday, 18 October 2023
8:00 AM - 5:30 PM
Hall B

RELATIONSHIP AMONG BASIN EVOLUTION, FAULT ACTIVITY, AND SYN-RIFT SEDIMENTARY STRATA: INSIGHTS FROM THERMO-MECHANICAL MODELING OF RIFTED SEDIMENTARY BASINS

Paper number: 231-9
Program: Technical Sessions
Time: 8:00 AM – 5:30 PM

Authors

Chase J. Shyu Presenting Author
Academia Sinica, Taipei
Eh Tan
Academia Sinica, Taipei
Pin-Rong Wu
Department of Earth Sciences, National Cheng Kung University, Tainan
Kenn-Ming Yang
Department of Earth Sciences, National Cheng Kung University, Tainan
Andrew T. Lin
National Central University, Taoyuan

Abstract

Rifted sedimentary basins play a vital role as hydrocarbon reservoirs and are extensively studied through seismic surveys. These surveys reveal subsurface geological structures, such as strata, faults, folds, and other formations within the sediment and crustal blocks. In this study, we employ the thermo-mechanical model, DynEarthSol, to simulate the dynamic formation of sedimentary basins during continental rifting. DynEarthSol incorporates essential factors such as lithospheric isostasy and sediment loading into elasto-visco-plastic lithosphere deformation, providing a comprehensive understanding of basin evolution. We analyze the displacement and tilting of undeformed crustal blocks in the models, investigating the strain partitioning of faults within rifting sedimentary basins over geological timescales. Furthermore, the model records valuable information about sediment deposition environments, enabling us to analyze the temporal and spatial migration of sediment distribution within the basins and sequence depositional events chronologically. By correlating scenarios of fault activity and basin migrations, we establish a robust relationship between these key geological processes. This relationship enhances the interpretation of seismic profiles and well logs in the context of crustal tectonics, providing important insights into the geological history and development of rifted sedimentary basins.

Geological Society of America Abstracts with Programs. Vol. 55, No. 6

doi: 10.1130/abs/2023AM-392454

© Copyright 2023 The Geological Society of America (GSA), all rights reserved. Permission is hereby granted to the author(s) of this abstract to reproduce and distribute it freely, for noncommercial purposes. Permission is hereby granted to any individual scientist to download a single copy of this electronic file and reproduce up to 20 paper copies for noncommercial purposes advancing science and education, including classroom use, providing all reproductions include the complete content shown here, including the author information. All other forms of reproduction and/or transmittal are prohibited without written permission from GSA Copyright Permissions.