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http://dx.doi.org/10.9719/EEG.2012.45.5.551

Stratigraphy of the BP-1 well from Sora Sub-basin  

Oh, Jaeho (Korea Institute of Geosciece and Mineral Resources(KIGAM))
Kim, Yongmi (Korea Institute of Geosciece and Mineral Resources(KIGAM))
Yun, Hyesu (Department of Geology and Earth Environmental Sciences, Chungnam National University)
Park, Eunju (Korea National Oil Corporation)
Yi, Songsuk (Korea National Oil Corporation)
Lee, Minwoo (Department of Geology and Earth Environmental Sciences, Chungnam National University)
Publication Information
Economic and Environmental Geology / v.45, no.5, 2012 , pp. 551-564 More about this Journal
Abstract
This study carried out palynological analysis and seismic interpretation to establish a stratigraphic and environmental reconstruction mainly based on fossil palynomorphs and seismic reflection data correlated with the oil exploation well (BP-1) located in the Sora Sub-basin. There were frequent environmental and floral changes due to sea level change in the Sora Sub-basin. The palynomorph assemblages found in the well sediments enabled paleoecological zonation of the well sediment sequence resulting in 4 zones: Ecozone III, Ecozone IV, Ecozone V, Ecozone VI. Index fossils among palynomorphs indicate geological ages of the units within the well ranging from Eocene to Pleistocene, and paleoenvironment varies from freshwater to inner neritic marine. Previous studies suggest that the marine deposits were slightly different in stratigraphic range from well to well. It is considered the difference is credited to geomorphological setting. This study also shows stratigraphic correlation between existing wells and BP-1 well to establishes a standard stratigraphy of the Domi Basin.
Keywords
Domi Basin; Sora Sub-basin; microfossils; biostratigraphy; paleoenvironment;
Citations & Related Records
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