Age and conditions of formation of sedimentary cover of the Ulleung Plateau of the Sea of Japan according to micropaleontological data

Tsoy, I. B.; Gorovaya, M. T.; Василенко, Л. Н.; Vashchenkova, N. G.; Vagina, N. K.

doi:10.1134/s0869593817010063

Cited by 6 publications

(1 citation statement)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The rifts in the WSKP are filled with well-stratified sedimentary sequences that consist of underlying syn-rift (U-1) and overlying post-rift (U-2) units (Figures 5-7). inferred the age of U-1 to be Late Oligocene to Early Miocene, which is consistent with paleontological age dating of sediments by Tsoy et al (2017) and the subsidence curves at the southern part of the eastern Korean margin derived by Ingle. (1992).…”

Section: Faults In Sedimentssupporting

confidence: 80%

Correlation of Seismicity With Faults in the South Korea Plateau in the East Sea (Japan Sea) and Seismic Hazard Assessment

et al. 2022

View full text Add to dashboard Cite

The South Korea Plateau (SKP) is a structural high at the eastern continental margin of the Korean Peninsula. Earthquakes occur frequently in the SKP although they are not larger than ML 5.0 in magnitude. The SKP is a region of highly rifted continental crust engraved with rifts created during back-arc rifting in the NW Pacific subduction zone that led to the separation of the SW Japan Arc in the Cenozoic. The Bandal, Onnuri, and Okgye Rifts are well-defined rifts in the SKP. Multichannel seismic profiles show that the rifts in the SKP are bounded by large-offset normal faults and their subsided basement is deformed by domino-style faulting. A close spatial correlation is recognized between the epicentral locations of earthquakes with relatively large magnitude and the rift-bounding fault of the Onnuri Rift. The faults in the SKP is interpreted to be reactivated with strike-slip since the middle Miocene. The maximum expected magnitude of earthquakes (Mmax) computed statistically using the catalog including instrumentally recorded seismicity is ML 5.42. However, Mmax estimated from the catalog including instrumentally recorded seismicity and historical records increases to ML 6.67.

show abstract

Section: Faults In Sedimentssupporting

confidence: 80%