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최덕근,Choe, Deok-Geun 한국과학기술단체총연합회 1999 과학과 기술 Vol.32 No.7
지구의 대륙형성을 15~16세기 베이컨은 대서양 양쪽 해안선 윤곽이 비슷하다는 점을 들어 하나의 대륙이 천재지변에 의해 변형된 것이라고 주장했다. 19세기 들어 허튼은 지구수축설을 들고 나왔고 20세기 초 대륙이동에 대한 논문이 미국의 테일러와 독일의 베개너에 의하여 발표되었다. 특히 베게너는 "대륙과 해양의 기원"이라는 저서를 통해 대륙이동설을 펼쳤으나 1930년 베게너의 죽음과 함께 많은 과학자들의 반박에 밀려 대륙이동설은 고개를 숙이게 되었다.
최덕근,Jusun Woo,박태윤 한국지질과학협의회 2012 Geosciences Journal Vol.16 No.3
The Okcheon Belt in southern Korea is an NE-SW trending fold-and-thrust belt consisting of two sedimentary basins of different origins: namely, the Chungcheong Basin and the Taebaeksan Basin. The Chungcheong Basin was a Neoproterozoic rift basin belonging to the South China Craton, while the Taebaeksan Basin was a Paleozoic shallow marine to non-marine sedimentary basin fringing the Sino-Korean Craton. These two basins merged to form the Okcheon Belt in the early Triassic by the collision of Sino-Korean and South China cratons and their boundary is currently demarcated by the South Korean Tectonic Line. The Okcheon Supergroup is herein refined to include the Neoproterozoic volcanic and glaciogenic sedimentary successions deposited in the Chungcheong Basin and is divided into the two groups: the Chungju Group consists of the Gyemyeongsan Formation, Hyangsanni Dolomite, and Daehyangsan Quartzite and the Suanbo Group is proposed to include the Munjuri, Hwanggangni, Myeongori, and Gounni formations in ascending order. The Myeongori Formation is emended to comprise the Geumgang Limestone and the Seochangni members. This lithostratigraphic scheme is correlatable with that of the Nanhua Basin in South China, suggesting that the Chungcheong Basin was an eastward extension of the Nanhua Basin during the Neoproterozoic. The geological structure of the Okcheon Supergroup in the Lake Chungju area is characterized by a number of isoclinal to tight, frequently overturned, anticlines and synclines. No major thrust faults were recognized within the study area, except the constraining bend of the South Korean Tectonic Line. Three deformational phases are empirically differentiated: D1 deformation most strongly affected the rocks of the Okcheon Supergroup; D2 deformation was produced by the collision between the Sino-Korean and South China cratons; and D3 deformation is represented by normal to strike-slip faults. D1, D2 and D3 deformational phases are referred to the Okcheon (mid-Paleozoic), Songnim (Triassic) and/or Daebo (Jurassic) orogenies, and post-Jurassic events, respectively. The Chungcheong Basin was initiated as a part of an intracratonic rift basin (Nanhua Basin) within the South China Craton in association with early Neoproterozoic break-up event of the supercontinent Rodinia. The bimodal volcanic succession of the Gyemyeongsan Formation corresponds to the initial rift episode of the Chungcheong Basin, and was succeeded by shallow marine Hyangsanni Dolomite and Daehyangsan Quartzite. The second phase of rifting at ~750 Ma accumulated a thick bimodal volcanic succession of the Munjuri Formation which is overlain by the diamictites of the Hwanggangni Formation representing the Cryogenian global glacial event, snowball Earth. The immediately-succeeding cap carbonate, Geumgang Limestone Member of the Myeongori Formation, recorded the deglaciation event. The Seochangni Member of the Myeongori Formation is characterized by dark gray slate/phyllite facies indicating a poorly-oxygenated basin during the Ediacaran. No stratigraphic unit overlying the Gounni Formation, the youngest Neoproterozoic formation of the Okcheon Supergroup, occurs in the Lake Chungju area, and thus little is known on the Paleozoic tectonic evolution of the Chungcheong Basin. It is inferred that the medium-pressure type regional metamorphism and the predominance of ductile deformation of the Okcheon Supergroup can be attributed to the mid-Paleozoic Okcheon Orogeny which would have been in line with the Wuyun Orogeny of South China. The South China and Sino-Korean cratons should have been drifted away from the Gondwana sometime during the mid-Paleozoic and collided to form the East Asian continent at ~250 Ma.
최덕근,Choe, Deok-Geun 한국과학기술단체총연합회 2003 과학과 기술 Vol.36 No.6
잠깐, 역사공부를 해 보자. 지구의 역사는 무려 46억년이나 된다. 최초의 화석은 종래 35억년이었던 것 보다 더 오래된 44억년 가량된 화석이 최근 밝혀졌다. 지구상에서 가장 기본적인 형태의 생명체가 출현해 진화하는 데 걸린 시간은 10억년 가량으로 추정하고 있다. 이에 비해 인류의 탄생은 고작해야 수백만년에 불과하다. 어떠한가. 깊고 오묘한 지구의 역사가 궁금하지 아니한가···