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Pohang Basin

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Journal Article
Published: 01 August 2022
Earthquake Spectra (2022) 38 (3): 2162–2182.
...Junyoung Lee; Kwang-Hee Kim; Su Young Kang; Moon Son; Byungmin Kim, M.EERI The 2017 M L 5.4 Pohang, South Korea earthquake, which caused severe damage, raised attention to the importance of the characterization of the Pohang Basin structure and the identification of active faults. We utilize 366...
FIGURES | View All (13)
Journal Article
Published: 01 March 2019
Journal of Paleontology (2019) 93 (2): 337–342.
...Jae-Cheon Sohn; Camiel Doorenweerd; Kye Soo Nam; Sei-Woong Choi Abstract A nepticulid leaf-mine ichnofossil, Stigmellites janggi Sohn and Nam, n. ichnosp., is described on the basis of a fossil leaf of Fagus from the early Miocene Geumgwangdong Formation in Pohang Basin. This mine trace...
FIGURES
Journal Article
Published: 01 May 2000
Journal of Sedimentary Research (2000) 70 (3): 491–503.
... Location and geologic maps of the Pohang Basin. A) The Pohang Basin is located along the eastern continental margin of Korea. The basin formed by pull-apart along two strike-slip faults during the back-arc opening of the East Sea (Sea of Japan) ( Yoon and Chough 1995 ). The basement escarpment...
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Journal Article
Published: 01 April 1998
Clays and Clay Minerals (1998) 46 (2): 204–214.
Journal Article
Published: 01 January 1997
Journal of Sedimentary Research (1997) 67 (1): 130–141.
...Y. K. Sohn; S. B. Kim; I. G. Hwang; J. J. Bahk; M. Y. Choe; S. K. Chough Abstract The Doumsan fan delta in the Miocene Pohang Basin (SE Korea) includes large-scale gravelly Gilbert-type foresets that are more than 150 m high and dip at about 20 degrees . The foresets consist of six sedimentary...
Image
Location and geologic maps of the <span class="search-highlight">Pohang</span> <span class="search-highlight">Basin</span>.  A)  The <span class="search-highlight">Pohang</span> <span class="search-highlight">Basin</span> is lo...
Published: 01 May 2000
Figure 1 Location and geologic maps of the Pohang Basin. A) The Pohang Basin is located along the eastern continental margin of Korea. The basin formed by pull-apart along two strike-slip faults during the back-arc opening of the East Sea (Sea of Japan) ( Yoon and Chough 1995 ). The basement
Image
( a ) Geological map of the southern part of the <span class="search-highlight">Pohang</span> <span class="search-highlight">Basin</span> with ( b ) re...
Published: 30 April 2015
Fig. 6. ( a ) Geological map of the southern part of the Pohang Basin with ( b ) representative cross-sections (from Son et al . 2013 ). ( c ) Fault-slip data from the basements adjacent to the border faults (lower-hemisphere, equal-area projection). Divergent arrows represent horizontal
Journal Article
Published: 04 August 2020
Bulletin of the Seismological Society of America (2020) 110 (5): 2031–2046.
... stressed fault system in the Pohang basin, South Korea. We created an earthquake catalog based on unsupervised data mining and measuring the energy ratio between short‐ and long‐window seismograms recorded by a temporary seismic network. The spatial distribution of approximately 4000 relocated aftershocks...
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Journal Article
Published: 30 April 2015
Journal of the Geological Society (2015) 172 (5): 664–680.
...Fig. 6. ( a ) Geological map of the southern part of the Pohang Basin with ( b ) representative cross-sections (from Son et al . 2013 ). ( c ) Fault-slip data from the basements adjacent to the border faults (lower-hemisphere, equal-area projection). Divergent arrows represent horizontal...
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Journal Article
Published: 01 July 1997
Journal of Sedimentary Research (1997) 67 (4): 725–739.
...S. K. Chough; I. G. Hwang Abstract The Duksung fan delta is located on the strike-slip fault-bounded western margin of Pohang Basin (Miocene), SE Korea. The fan delta is approximately 6 km in radius and consists of alluvial fan, Gilbert-type topset, foreset, and bottomset, and basin plain...
Image
Outcrop photographs showing ( a ) the NNE-trending western border fault of ...
Published: 30 April 2015
Fig. 7. Outcrop photographs showing ( a ) the NNE-trending western border fault of the Pohang Basin, and ( b ) the pervasively fractured basement rock and ( c ) the basin-filling disorganized angular conglomerate adjacent to the fault.
Image
Maps and photographs of the study area: ( 1 ) geological map of <span class="search-highlight">Pohang</span> Basi...
Published: 01 March 2019
Figure 1. Maps and photographs of the study area: ( 1 ) geological map of Pohang Basin (after Paik et al., 2012 ), with black arrow indicating study area; ( 2 ) fossil locality along a mountain slope, with arrow pointing to fossiliferous horizon; ( 3 ) a pile of paper shales taken off the mother
Image
Maps of (a) the final  V S   30 , (b) topography, and (c) geology produced ...
Published: 01 August 2022
in (a). F1: anonymous fault; F2: anonymous fault; F3: anonymous fault; F4: Heunghae fault; F5: Gokgang fault; F6: Hyeongsan fault; F7: W.B.F. (the western border fault of the Pohang Basin); F8: Yangsan fault.
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The δ 18 O V-SMOW  comparison. Oxygen isotope ratios for the global celadon...
Published: 01 June 2022
Miocene seawater are from Miller et al. (1991) , the carbonate concretions in the Middle Miocene marine Pohang Basin ( Fig. 1a ) are from Khim et al. (2007) , and the present sea and groundwater are from Ou (2019) .
Journal Article
Published: 01 August 2019
Earthquake Spectra (2019) 35 (3): 1235–1260.
..., and fill soils with thicknesses up to 20 m. Information in relation to material types under the soft rocks or weathered soils/rocks was left out in the boring data. The depth of bedrock in the Pohang basin including the affected area is approximately 500 m, and mudstone is mostly distributed up...
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Journal Article
Journal: GSA Bulletin
Published: 01 January 1995
GSA Bulletin (1995) 107 (1): 83–97.
... sediment. Unit I never reaches the coast except in the southern Youngduk Basin. There, the unit I sequences may be correlated with the marine deposit (Yeonil Group) exposed near Pohang (Fig. 7B), based on spatial distribution and similarity in internal sequence con guration (e.g., structural deformation...
Journal Article
Published: 12 February 2019
Bulletin of the Seismological Society of America (2019) 109 (2): 756–769.
..., and a number of structural basins were formed on the Cretaceous volcano‐sedimentary succession ( Yoon et al. , 2014 ; Son et al. , 2015 ). The Pohang area is also composed of middle Miocene sedimentary rocks with less than ∼ 900    m of strata thickness on land ( Song et al. , 2015 ). Since...
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Journal Article
Published: 07 August 2019
Seismological Research Letters (2019) 90 (5): 1844–1858.
... or strains created by injection pressure or volume. Triggered earthquakes are runaway ruptures, initiated by anthropogenic forcing, that grow in size beyond the bounds of the stimulated region. They release tectonic strain. The Pohang EGS site is located within the Pohang basin, one...
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Journal Article
Published: 01 July 2013
Bulletin de la Société Géologique de France (2013) 184 (4-5): 467–484.
... basin, but the Paleocene-middle Eocene rhyolitic rocks in the Pohang-Ulsan area [ Choi et al ., 2001 ]. The NNW-SSE to NW-SE trending dyke swarm in the Ogcheon belt is genetically related to the Late Cretaceous Bulgugsa Granite [ Lee et al ., 1996 ] and to the T_3 Event. K-Ar whole rock ages...
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Journal Article
Published: 01 May 2021
Earthquake Spectra (2021) 37 (2): 652–685.
..., in which each element had a width of 1 m and a length of 1 m. The boundary conditions of the numerical analysis were preserved under the drainage conditions. Lee et al. (2017) and Kang et al. (2019) reported that the bedrock of the Pohang basin including the observed area is approximately 500 m...
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