Loess–paleosol stratigraphy of Dukso area, Namyangju City, Korea (South)

Lim

et al. 2011

J Quaternary Science

The geochemical characteristics of an approximately 6‐m‐long sediment core collected from the Jeongokri archaeological site (Hantan River, Korea) were examined to determine the provenance of the sediments and to reconstruct the palaeoenvironment of the study area during the Late Pleistocene (200–127 ka). The core sediments were subdivided into two parts based on grain size: an upper (0–380 cm depth) and lower part (>380 cm depth). The lower part was deposited primarily by fluvial processes during an interglacial period [marine isotope stage (MIS) 7] with warm and humid conditions. Conversely, the upper part was mainly deposited by aeolian processes during a cold and dry glacial period (MIS 6). Geochemical characteristics, represented by major, trace and rare earth element (REE) compositions, and textures of the Jeongokri core sediments show distinct differences between the upper and lower parts. The mineralogy and major, trace and REE compositions indicate that the influence of felsic source rocks (e.g. granite) was dominant in the lower sediments, which were derived from the Hantan River. In contrast, increased quartz content and the very fine and homogeneous grain size in the upper sediments indicate an aeolian origin. REE ratios and distribution patterns, and geochemical signatures indicate that these sediments were derived predominantly from Chinese loess deposits and partially from local sediments from the Korean Peninsula; the possible source area of the upper sediments is the northern part of the Yellow Sea basin. The Yellow Sea basin, having mixed geochemical signatures between Chinese loess and Korean‐derived sediments, was exposed because of low sea levels during MIS 6. The exposed Yellow Sea basin was located in the path of winter‐monsoon winds, which may have carried a great deal of airborne sediments from the basin to the Jeongokri area. Copyright © 2011 John Wiley & Sons, Ltd.

Section: Introductionmentioning

confidence: 99%

Geochemistry of Quaternary sediments of the Jeongokri archaeological site, Korea: implications for provenance and palaeoenvironments during the Late Pleistocene

Kim

Lim

et al. 2011

J Quaternary Science

“…Public complaints about ecosystem services can provide important information for environmental planning. This study conducted content, temporal, and spatial analyses of environmental complaints using a geographical information system to examine environmental policy alternatives and decrease the hazards of ecosystem services [16,28,29,31,[60][61][62][63][64][65] based on local issues [54]. The analysis of public complaints can help reduce various negative environmental factors, which can enable citizens to resolve their problems related to ecosystem services.…”

Section: Discussionmentioning

confidence: 99%

An Analysis of Public Complaints to Evaluate Ecosystem Services

Choi

2020

Land

Reducing the demands placed on ecosystems can maximize the benefits they provide. Therefore, this study examines public complaints about the environment to analyze the pressure placed on the ecosystem spatially and temporally. Environment-related public complaints filed in the city of Namyangju were examined. The city sources its water from the Han River and is poised to implement a payment system for ecosystem services. Many complaints were filed regarding noise and oscillation, dust scattering, wildlife, air quality management, and water quality management. The complaints indicated that the public were inconvenienced by the regulation of services and service-support: scattered dust affected the downtown area all year, while noise and oscillation, as well as problems with air quality, were prevalent mainly during the summer. Measures should be adopted to address the peculiarities of each issue. This study suggests that areas in which wild boars are active should be separated from areas of human activity and that pollutants need to be prevented from reaching the waterfront. Measures should be developed to address the negative factors and maximize ecosystem benefits. Analyzing public complaints about the environment can lead to the establishment of local plans to maximize ecosystem services.

“…The interpretation of soil wedges is under ongoing debate in Korea [23]–[28]. These structures are often observed in Korean Paleolithic sites [29]–[31].…”

Section: Methodsmentioning

confidence: 99%

“…These extraordinarily thin structures are easily interpreted as thin fissures resulting from desiccation [32]. Nevertheless, many Korean authors claimed that these structures formed under periglacial conditions during OIS 2 and 4 [25] or under cold and arid conditions [23], [26]. Normally, the younger wedges are attributed to MIS 2, while the older ones are attributed to MIS 4 [33].…”

Section: Methodsmentioning

confidence: 99%

“…However, they argued that some soil wedges could be formed in times of “temporary” permafrost occurring during the last glacial maximum (LGM) [26]. Yu et al offered an alternate explanation that the wedges (the more recent cracks) formed during either the cold and dry period of the last stage of MIS 3 or in the early stages of MIS 2 on the basis of another Korean Late Pleistocene site, Dukso [23]. A paleosol deposit, L1SS1, contained Aira-Tn (AT) tephra dated to about 25 kya [35] as well as a soil wedge in the upper portion of the L1SS1 deposit.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

The Persistence of Mode 1 Technology in the Korean Late Paleolithic

2013

PLoS ONE

Ssangjungri (SJ), an open-air site with several Paleolithic horizons, was recently discovered in South Korea. Most of the identified artifacts are simple core and flake tools that indicate an expedient knapping strategy. Bifacially worked core tools, which might be considered non-classic bifaces, also have been found. The prolific horizons at the site were dated by accelerator mass spectrometry (AMS) to about 30 kya. Another newly discovered Paleolithic open-air site, Jeungsan (JS), shows a homogeneous lithic pattern during this period. The dominated artifact types and usage of raw materials are similar in character to those from SJ, although JS yielded a larger number of simple core and flake tools with non-classic bifaces. Chronometric analysis by AMS and optically stimulated luminescence (OSL) indicate that the prime stratigraphic levels at JS also date to approximately 30 kya, and the numerous conjoining pieces indicate that the layers were not seriously affected by post-depositional processes. Thus, it can be confirmed that simple core and flake tools were produced at temporally and culturally independent sites until after 30 kya, supporting the hypothesis of a wide and persistent use of simple technology into the Late Pleistocene.