Structural development and tectonic evolution of Gunsan Basin (Cretaceous–Tertiary) in the central Yellow Sea

Reconstruction of northeast Asian deformation integrated with western Pacific plate subduction since 200 Ma

“…The basin-controlled normal faults on the eastern margin of the North China Craton and the northeast Yangtze showed a change from an Early Cretaceous NNE-trending distribution to a Late Cretaceous ENE-WSW (or E-W to WNW-ESE)-trending distribution, which controlled a nearly E-W-trending depocentre arrangement in the southern and northern South Yellow Sea basin, Hefei basin, and Laiyang basin (Zhu et al, 2012). These structural patterns suggest that the Early Cretaceous rifting should have been driven by a nearly WNW-ESE extension and that the Late Cretaceous rifting was driven by a nearly NNW-SSE extension from the dextral movement of the Tan-Lu and its branching faults (Shinn et al, 2010). The U-Pb detrital zircon dating of sedimentary rocks and K-Ar dating of basaltic-andesitic rocks in the Laiyang basin constrained the two rift episodes to ca.…”

“…respectively, in the Laiyang basin (Tong, 2007). The nearly N-S-trending Late Cretaceous extension strains in the southern and northern South Yellow Sea basin were approximately 6-10% (Shinn et al, 2010;Xiao and Tang, 2014).…”

Cross-section restoration and one-dimensional basin modeling of the Central Subbasin in the southern Kunsan Basin, Yellow Sea

“…1, 2). The basin fill of the Kunsan Basin consists mainly of nonmarine clastic sediments (Yi et al, 2003;Shinn et al, 2009) and can be divided into three distinct tectono-stratigraphic units: pre-Cretaceous, Cretaceous-early Tertiary (Paleocene), and Tertiary (Eocene-present) (Shin, 2005). The Late Cretaceous and Paleocene shales are potential source rocks and the younger Paleocene-Eocene fluivio-deltaic sediments may form reservoirs (Shin, 2005).…”

The geological CO2 storage capacity of the Jeju Basin, offshore southern Korea, estimated using the storage efficiency

“…The onshore basins in Korea are shallow and good-quality reservoir rocks are known to be very limited. On the other hand, offshore basins (the Ulleung, Kunsan, and Jeju basins) contain thick and young clastic sediments (Lee et al, 2001(Lee et al, , 2006Shinn et al, 2010) which are probably suitable for the geological sequestration of CO 2 .…”