Global Geology 2009, 12(2) 80-86 DOI:     ISSN: 1673-9736 CN: 22-1371/P

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Keywords
Korean Peninsula
Meso-Cenozoic basins
tectonic movement
Authors
PubMed

Meso-Cenozo ic basin evolution in northern Korean Peninsula

PAK Hyon Uk1 , LYANG To Jun2 , LIU Yongjiang3 , HYON Yun Su1 and KIM Gyong Chol3

1. Institute of Geology, State Academy of Science, Pyongyang, DPR of Korea; 2. Department of Geology, Kim Il Song University, Pyongyang, DPR of Korea; 3. College of Earth Sciences, Jilin University, Changchun 130061, China

Abstract

In the Korean Peninsula the Meso-Cenozoic basins were mainly formed due to fault block and block movement. The Mesozoic fracture structures correspond basically to modern large rivers in direction. Such faults were usually developed to rift and formed lake-type tectonic basin, such as the Amrokgang-, Taedonggang-, Ryesonggang-, Hochongang-, Jangphari-, Susongchon-, Pujon-, and Nampho basins. The Mesozoic strata are considered to be divided into the Lower Jurassic Taedong System, Upper Jurassic Jasong System, Upper Jurassic-early Lower Cretaceous Taebo System, and the Upper Cretaceous-Paleocene (Chonjaebong, Hongwon, Jaedok Series) . The Cenozoic block movement succeeded the Mesozoic fault block movement. The Kilju-Myonchon Graben and Tumangang Basin, etc, are the basins related to the fault zones developed from the Oligocene to Miocene. In addition, the Tertiary basins were formed in many areas in the Miocene ( e. g. Sinhung, Oro, Hamhung, Yonghung, Anbyon, Cholwon, etc) . The Cenozoic sedimentation occurred mainly from the late Oligocene to Miocene. The Kilju-Myongchon Graben was the fore deep connected to the sea and the basins inclined in the Chugaryong Fault Zone are intramountain basins. Therefore, coal-bearing beds and clastic rocks in the intramountain basins and rare marine strata and terrigenous clastic rocks are main sedimentary sequences in the Cenozoic.

Keywords Korean Peninsula   Meso-Cenozoic basins   tectonic movement  
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