Depositional environments, architecture, and controls of early cretaceous non-marine successions in the northwestern part of Kyongsang Basin, Korea SCIE SCOPUS

DC Field Value Language
dc.contributor.author Jo, HR -
dc.date.accessioned 2020-04-20T15:55:39Z -
dc.date.available 2020-04-20T15:55:39Z -
dc.date.created 2020-01-28 -
dc.date.issued 2003-10-01 -
dc.identifier.issn 0037-0738 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/5438 -
dc.description.abstract In the northwestern part of Kyongsang Basin, southeast Korea, non-marine successions of interbedded sandstone and mudstone are divided into successive stratigraphic units on the basis of facies assemblages and sandstone architecture. Parts of the successions (Sinpyong-Anpyong and Jotap units), formed in southward- or southeastward-draining fluvial systems, are documented in detail in terms of macroform-scale to stratigraphic-level architecture for the assessment of fluvial styles and evolution of non-marine depositional environments. The Sinpyong-Anpyong unit consists of thick sandstone bodies (2-47 m thick), thin sandstone bodies (generally < 2 m thick), and mudstone-dominated bodies. The thick sandstone bodies are characterized by superposition of numerous bars and channels, indicative of braided-channel systems. The channels are estimated at a few to 10 m deep and 9 m to tens of meters wide. The thin sandstone bodies comprise planar beds of massive, horizontally stratified, and-trough cross-stratified sandstones, interpreted as sand sheets and splays. The mudstone-dominated bodies largely consist of purple siltstone in the northern (proximal) part and gray mudstone in the southern (distal) part, representing well-drained floodplains and poorly drained floodplains with local shallow lakes, respectively. In the basal and uppermost parts of Sinpyong-Anpyong unit, the distal poorly drained facies (gray mudstone) expands to the northern basin margin. The Jotap unit, overlying the Sinpyong-Anpyong unit, comprises thick sandstone bodies (2-10 m thick), interbedded sandstone/siltstone bodies, and siltstone-dominated bodies. The thick sandstone bodies are dominated by the deposits of small bars and dunes with common lenticular beds of purple siltstone and internal scour surfaces, suggestive of bedform-dominated channels with ephemeral discharges. The channels are estimated at generally a few meters in depth and a few tens to hundreds of meters in width. The interbedded sandstone/siltstone bodies comprise thin, sheet-like and lenticular sandstone beds (< 2 m thick) interbedded with purple siltstone, interpreted as channel-proximal floodplains where sand was frequently deposited as sand sheets and splays, levees, and crevasse-channel fills. The siltstone-dominated bodies consist mostly of purple siltstone with subordinate thin sandstone beds, representing channel-distal, well-drained floodplains. Along with the marked change in fluvial styles, the successions show systematic variations in the proportion and connectedness of channel sandstone bodies and the distribution of floodplain/lake facies. The basal and uppermost parts of the Sinpyong-Anpyong unit are characterized by the sourceward expansion of distal, poorly drained floodplain/shallow lake facies and the low proportion and connectedness of channel bodies. Following 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 expansion 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. (C) 2003 Elsevier Science B.V. All rights reserved. -
dc.description.uri 1 -
dc.language English -
dc.publisher ELSEVIER SCIENCE BV -
dc.subject STAGE PLANE BEDS -
dc.subject SEQUENCE STRATIGRAPHY -
dc.subject NORTHERN PAKISTAN -
dc.subject FLUVIATILE SEDIMENTATION -
dc.subject SOUTHEASTERN KOREA -
dc.subject CONTINENTAL STRATA -
dc.subject FORELAND BASIN -
dc.subject BRAIDED-RIVER -
dc.subject PULL-APART -
dc.subject EVOLUTION -
dc.title Depositional environments, architecture, and controls of early cretaceous non-marine successions in the northwestern part of Kyongsang Basin, Korea -
dc.type Article -
dc.citation.endPage 294 -
dc.citation.startPage 269 -
dc.citation.title SEDIMENTARY GEOLOGY -
dc.citation.volume 161 -
dc.citation.number 3-4 -
dc.contributor.alternativeName 조형래 -
dc.identifier.bibliographicCitation SEDIMENTARY GEOLOGY, v.161, no.3-4, pp.269 - 294 -
dc.identifier.doi 10.1016/S0037-0738(03)00130-1 -
dc.identifier.scopusid 2-s2.0-0141837214 -
dc.identifier.wosid 000187496900006 -
dc.type.docType Article -
dc.description.journalClass 1 -
dc.subject.keywordPlus STAGE PLANE BEDS -
dc.subject.keywordPlus SEQUENCE STRATIGRAPHY -
dc.subject.keywordPlus NORTHERN PAKISTAN -
dc.subject.keywordPlus FLUVIATILE SEDIMENTATION -
dc.subject.keywordPlus SOUTHEASTERN KOREA -
dc.subject.keywordPlus CONTINENTAL STRATA -
dc.subject.keywordPlus FORELAND BASIN -
dc.subject.keywordPlus BRAIDED-RIVER -
dc.subject.keywordPlus PULL-APART -
dc.subject.keywordPlus EVOLUTION -
dc.subject.keywordAuthor fluvial sequences -
dc.subject.keywordAuthor architectural analysis -
dc.subject.keywordAuthor stratigraphic architecture -
dc.subject.keywordAuthor tectonic control -
dc.relation.journalWebOfScienceCategory Geology -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.relation.journalResearchArea Geology -
Appears in Collections:
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse