Cyclic sedimentation across a middle ordovician carbonate ramp (Duwibong Formation), Korea SCIE SCOPUS

Cited 20 time in WEB OF SCIENCE Cited 19 time in Scopus
Title
Cyclic sedimentation across a middle ordovician carbonate ramp (Duwibong Formation), Korea
Author(s)
Lee, Y.I.; Hyeong, K.; Yoo, C.M.
KIOST Author(s)
Yoo, Chan Min(유찬민)
Publication Year
2001
Abstract
The Middle Ordovician Duwibong Formation (about 100 m thick), Korea, comprises various lithotypes deposited across a carbonate ramp. Their stacking patterns constitute several kinds of meter-scale, shallowing-upward carbonate cycles. Lithofacies associations are grouped into four depositional facies: deep- to mid-ramp, shoal-complex, lagoonal, and tidal-flat facies. These facies are composed of distinctive depositional cycles: deep subtidal, shallow subtidal, restricted marine, and peritidal cycles, respectively. The subtidal cycles are capped by subtidal lithofacies and indicate incomplete shallowing to the peritidal zone. The restricted marine and peritidal cycles are capped by tidal flat lithofacies and show evidence of subaerial exposure. These cycles were formed by higher frequency sea-level fluctuations with durations of 120 ky (fifth order), which were superimposed on the longer term sea-level events, and by sediment redistribution by storm-induced currents and waves. The stratigraphic succession of the Duwibong Formation represents a general regressive trend. The vertical facies change records the transition from a deep- to mid-ramp to shoal, to lagoon, into a peritidal zone. The depositional system of the Duwibong Formation was influenced by frequent storms, especially on the deep ramp to mid-ramp seaward of ooid shoals. The storm deposits comprise about 20% of the Duwibong sequence.
ISSN
0172-9179
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5928
Bibliographic Citation
Facies, no.44, pp.61 - 74, 2001
Keywords
Carbonate ramp; Cyclic sedimentation; Korea; Ordovician; Storm deposits
Type
Article
Language
English
Document Type
Article
Related Researcher
Research Interests

Ocean Geology,Mineral resources,해양지질,광물자원

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