Thermal histories of the Cretaceous Pungam and Yeongdong basins, Korea based on apatite and zircon fission track analysis

Choi, Taejin; Lee, Yong Il

doi:10.1007/bf02910369

Cited by 7 publications

(11 citation statements)

References 20 publications

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“…1987; Lim & Lee 2005) and Cretaceous basins (Lim et al . 2003; Choi & Lee 2006). IC, illite crystallinity; AFT, apatite fission track; BDTZ, brittle–ductile transition zone.…”

Section: Discussionmentioning

confidence: 99%

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Thermal maturity assessment of the Upper Triassic to Lower Jurassic Nampo Group, mid‐west Korea: Reconstruction of thermal history

Egawa

Lee

2007

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Thermal maturity of the Upper Triassic to Lower Jurassic Nampo Group, a sediment‐fill of the Chungnam Basin located in the central western part of South Korea, was assessed by illite crystallinity measurement and sandstone microtexture analysis. The Nampo Group consists of a fluvio‐lacustrine deposit bearing meta‐anthracitic coals and was over‐thrusted by the basement rocks. Sandstones are characterized by down sequence increasing illite crystallinity, from anchizone to epizone, which is strongly suggestive of burial heating. Deep‐burial diagenesis and deformation are evidenced by well‐developed pressure solution textures, whose intensity tends to increase down sequence, and by ductile deformation in the lowermost strata. On the basis of the result of illite crystallinity measurement, the maximum paleo‐temperature and total burial depth of the Nampo Group are estimated to be ca 340°C and 10 km, respectively; these conditions are in good agreement with the observed ductile deformation features. The absence of strata younger than the Nampo Group in and around the Chungnam Basin suggests that deep burial of the Nampo Group was caused by tectonic crustal loading. The tectonic overload was because of basement over‐thrusting that occurred during the Jurassic Daebo orogeny, which is closely related to the orthogonal subduction of the Izanagi Plate beneath the East Asian continent. Subsequent hydrothermal alteration disturbed the thermal maturity pattern, resulting in anomalously high illite crystallinity and meta‐anthracitization.

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“…1987; Lim & Lee 2005) and Cretaceous basins (Lim et al . 2003; Choi & Lee 2006). IC, illite crystallinity; AFT, apatite fission track; BDTZ, brittle–ductile transition zone.…”

Section: Discussionmentioning

confidence: 99%

“…1994; Choi & Kim 1997; Lee & Lee 2001; Noh & Choi 2001; Lim et al . 2003; Choi & Lee 2006) have experienced high‐grade diagenesis to very low‐grade metamorphism.…”

Section: Introductionmentioning

confidence: 99%

Thermal maturity assessment of the Upper Triassic to Lower Jurassic Nampo Group, mid‐west Korea: Reconstruction of thermal history

Egawa

Lee

2007

Island Arc

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“…A computer‐automated microscope stage system (Dumitru 1993) was used to translate between sample and detector. The zeta calibration approach (Hurford & Green 1983; Hurford 1990) was used and we adopted a ζ‐value of 351.4 ± 20.3 (2σ) for apatite (Choi & Lee 2006). The conventional central age, Poisson error, and the probability of obtaining χ 2 value for n degrees of freedom where n is the number of grains − 1 ( P (χ 2 )) (Galbraith 1981; Green 1981) were calculated using the ZETAAGE computer program (Brandon 1996).…”

Section: Jinan Basinmentioning

confidence: 99%

“… Thermal histories and apatite fission‐track (FT) ages of the Cretaceous basins and Palgongsan granite in the Korean peninsula (Pungam and Yeongdong Basins Choi & Lee 2006; Palgongsan granite Lim & Lee 2005; Gyeongsang Basin Lim et al. 2003).…”

Section: Thermal History Of East Asian Continental Marginmentioning

confidence: 99%

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Thermal histories of Cretaceous basins in Korea: Implications for response of the East Asian continental margin to subduction of the Paleo‐Pacific Plate

Choi

Lee

2011

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Thermal histories of Cretaceous sedimentary basins in the Korean peninsula have been assessed to understand the response of the East Asian continental margin to subduction of the Paleo-Pacific (Izanagi) Plate. The Izanagi Plate subducted obliquely beneath the East Asian continent during the Early Cretaceous and orthogonally in the Late Cretaceous. First, the Jinan Basin, a pull-apart basin, was studied by illite crystallinity and apatite fission-track analyses. Analytical results indicate that Jinan Basin sediment was heated to a maximum temperature of approximately 287°C by burial. The sediment experienced two cooling episodes during ca 95-80 Ma and after ca 30 Ma, with a quiescent period between them. A similar cooling pattern is recognized in the Gyeongsang Basin, the largest Cretaceous basin in Korea. The Jinan and Gyeongsang Basins were cooled mainly by exhumation between ca 95 and 80 Ma, but the former was exhumed slightly earlier than the latter by transpressional force due to the subduction direction change of the Izanagi Plate. Comparison of thermal history of Korean Cretaceous basins with those of granitoids in northeastern China and the accretionary complexes in southwestern Japan reveals that the Upper Cretaceous regional exhumation of the East Asian continental margin including the Korean peninsula during ca 95-80 Ma was facilitated by the subduction of the Izanagi-Pacific ridge, which migrated northeastwards with time, resulting in the end of regional exhumation at ca 80 Ma in this region.

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Land-ocean interaction of carbon cycle and bio-diversity change during the Cretaceous in Asia

2006

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Thermal histories of the Cretaceous Pungam and Yeongdong basins, Korea based on apatite and zircon fission track analysis

Cited by 7 publications

References 20 publications

Thermal maturity assessment of the Upper Triassic to Lower Jurassic Nampo Group, mid‐west Korea: Reconstruction of thermal history

Thermal maturity assessment of the Upper Triassic to Lower Jurassic Nampo Group, mid‐west Korea: Reconstruction of thermal history

Thermal histories of Cretaceous basins in Korea: Implications for response of the East Asian continental margin to subduction of the Paleo‐Pacific Plate

Land-ocean interaction of carbon cycle and bio-diversity change during the Cretaceous in Asia

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