Review of the Mesozoic Iron Mineralization in South Korea

Seo, Jieun; Choi, Seon Gyu; Lee, Young Jae; Uchida, Etsuo

doi:10.14770/jgsk.2021.57.4.615

Cited by 1 publication

(1 citation statement)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…S4) are comparable to pedogenic magnetites in loessic soils and might be indicative of a detrital component (Geiss & Zanner, 2006;Hyodo et al, 2020;Ahmed & Maher, 2018). This inference could be supported by the frequent occurrence of detrital magnetite grains in modern fluvial sediments of the Hantan River (Figure 4E, F and S11), and these grains are presumably sourced from well-known magnetite ore deposits (Kim et al, 1994;Seo et al, 2021) in areas upstream of our core location. The SMQ results and minor sedimentary component findings indicate strongly that the coarse fraction of the Jeongok-ri sediments includes various types of locally derived detrital materials transported by fluvial processes.…”

Section: Depositional Environments Of the Jeongok-ri Sediments Interp...supporting

confidence: 67%

Surface microtextures of quartz grains and minor sedimentary components across the Paleolithic Jeongok‐ri sediments, Yeoncheon, South Korea

Baek

2023

J Quaternary Science

View full text Add to dashboard Cite

The Jeongok‐ri Paleolithic site in the central Korean peninsula is known as the first findspot of Acheulean‐type hand axes in East Asia. Although many previous studies have investigated the depositional environments of Jeongok‐ri sediments across the Paleolithic occupation, they remain controversial. In this study, we collected an 11‐m‐long core to obtain evidence from systematic surface microtextures of quartz grains (SMQs) concerning depositional environments in the Jeongok‐ri archeological site. SMQs in the Jeongok‐ri sediments are characterized by dominant angular to subangular outlines and small to large conchoidal fractures with arcuate steps, as well as sparse V‐shaped percussion cracks; these features suggest short distances and subaqueous transportation with grain‐to‐grain collisions and violent impacts of quartz grains. On the basis of simultaneous sedimentation of the hosting silt deposits, our SMQ results suggest that Jeongok‐ri sediments were originally fluvial, regardless of their intermediate sedimentary history. This evidence from quartz grain microtextures is consistent with minor sedimentary components found in the Jeongok‐ri core sediments, such as diatom grains as microfossil constituents, along with macroscopic charcoals and titanium‐bearing detrital magnetite grains. The geological and geomorphological conditions of the Jeongok‐ri site are also favorable for floodplain environments given the position adjacent to river terraces formed by the previous lateral erosion of a meandering channel in the nearby Hantan River. Our findings will help to understand environmental conditions during the development of Paleolithic cultures in East Asia.

show abstract

Section: Depositional Environments Of the Jeongok-ri Sediments Interp...supporting

confidence: 67%

Surface microtextures of quartz grains and minor sedimentary components across the Paleolithic Jeongok‐ri sediments, Yeoncheon, South Korea

Baek

2023

J Quaternary Science

View full text Add to dashboard Cite

show abstract

Review of the Mesozoic Iron Mineralization in South Korea

Cited by 1 publication

References 28 publications

Surface microtextures of quartz grains and minor sedimentary components across the Paleolithic Jeongok‐ri sediments, Yeoncheon, South Korea

Surface microtextures of quartz grains and minor sedimentary components across the Paleolithic Jeongok‐ri sediments, Yeoncheon, South Korea

Contact Info

Product

Resources

About