Non-marine successions in the northwestern part of Kyongsang Basin (Early Cretaceous): Fluvial styles and stratigraphic architecture SCIE KCI
DC Field | Value | Language |
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dc.contributor.author | Jo, Hyung Rae | - |
dc.date.accessioned | 2020-04-21T06:25:26Z | - |
dc.date.available | 2020-04-21T06:25:26Z | - |
dc.date.created | 2020-02-04 | - |
dc.date.issued | 2003-06 | - |
dc.identifier.issn | 1226-4806 | - |
dc.identifier.uri | https://sciwatch.kiost.ac.kr/handle/2020.kiost/5491 | - |
dc.description.abstract | Non-marine successions in the northwestern part of Kyongsang Basin (Early Cretaceous) are divided into successive stratigraphic units based on facies; assemblages and architecture of sandstone bodies. In the present study, two stratigraphic units (Sinpyong-Anpyong and Jotap units) are documented in detail in terms of fluvial architecture. The Sinpyong-Anpyong unit is divided into thick sandstone, thin sandstone, and mudstone-dominated bodies, representing major channels, sand splays, and floodplains, respectively. The channel sandstone bodies are characterized by superposition of numerous bars and channels deposits formed in braided rivers. The mudstone-dominated bodies largely consist of purple siltstone in the northern (proximal) part and gray mudstone in the southern (distal) part, reflecting well-drained floodplains and poorly drained floodplains with local shallow lakes, respectively. The Jotap unit is divided into thick sandstone, interbedded sandstone/siltstone, and siltstone-dominated bodies, representing major channels, proximal floodplains, and distal floodplains, respectively. The thick sandstone bodies consist of trough cross-stratified sets and horizontally stratified sets with common internal scour surfaces and lenticular beds of purple siltstone, indicative of ephemeral channels dominated by small-scale bedforms. The siltstone-dominated bodies consist of purple siltstone and suggest well-drained floodplains. Along with the marked change in fluvial styles, the successions show systematic variations in the stacking patterns of channel bodies and the distribution of floodplain/lake facies. The basal and uppermost parts of the Sinpyong-Anpyong unit are characterized by sourceward expansion of distal, poorly drained floodplain/shallow lake facies and the low proportion and connectedness of channel bodies. Overlying these gray mudstone-dominated sequences, the middle part of Sinpyong-Anpyong unit and Jotap unit show increases in the proportion, connectedness, and grain size of channel bodies and basinward progradation of proximal, well-drained floodplain facies. Such a stratigraphic architecture can be attributed to the fluctuations in the ratio of accommodation space/sediment supply, regulated by repeated basin subsidence. | - |
dc.description.uri | 1 | - |
dc.language | English | - |
dc.publisher | 한국지질과학협의회 | - |
dc.title | Non-marine successions in the northwestern part of Kyongsang Basin (Early Cretaceous): Fluvial styles and stratigraphic architecture | - |
dc.type | Article | - |
dc.citation.endPage | 106 | - |
dc.citation.startPage | 89 | - |
dc.citation.title | Geosciences Journal | - |
dc.citation.volume | 7 | - |
dc.citation.number | 2 | - |
dc.contributor.alternativeName | 조형래 | - |
dc.identifier.bibliographicCitation | Geosciences Journal, v.7, no.2, pp.89 - 106 | - |
dc.identifier.doi | 10.1007/BF02910212 | - |
dc.identifier.wosid | 000188433700002 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.subject.keywordAuthor | fluvial deposits | - |
dc.subject.keywordAuthor | architectural analysis | - |
dc.subject.keywordAuthor | stratigraphic architecture | - |
dc.subject.keywordAuthor | tectonic control | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | kci | - |