Regional mineral mapping of island arc terranes in southeastern Mongolia using multi-spectral remote sensing data

Son, Yowhan; Kim, Kwang-Eun; Yoon, Wangjung; Cho, Seong‐Jun

doi:10.1016/j.oregeorev.2019.103106

Cited by 15 publications

(6 citation statements)

References 65 publications

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“…1). 몽골의 지질 개요 몽골은 현생대에서 가장 큰 조산대 중 하나인 중앙아시아 조산대(CAOB, Central Asia Orogenic Belt)의 중심부에 위 치하고 있으며, 시베리아, 타림(Tarim) 및 북중국 대륙 지괴 사이에 위치하고 있다 (Badarch et al, 2002;Hanžl, 2008;Kröner, 2015;Broussolle et al, 2019;Son et al, 2019). 중앙아시아 조산대는 고원생대부터 중원생대 동안에 일 어난 시베리아와 북중국 대륙괴의 초기 이동에서부터 (1,516-1,662 Ma) (Wang and Liu, 1986;Davaasuren et al, 2016) 원시 아시아 대양이 쏠론커(Solonker) 봉합선을 따라 폐쇄될 때까지 발생한 지각 활동으로(296-234 Ma) (Xiao et al, 2003;Chen et al, 2009;Davaasuren et al, 2016), 몽골 대륙은 이러한 중앙아시아 조산대의 지체구조 운동에 의해 연속적인 지괴들의 충돌과 섭입으로 성장하여 왔기 때문에 지괴, 변성대, 비활성 대륙연변부, 호상열도, 전 ․ 후방호 분 지, 쐐기형 부가대, 오피올라이트 등으로 구성된 다양한 지 층의 암석이 분포하게 된다 (Badarch et al, 2002;Chi et al, 2007;Kröner, 2015;Broussolle et al, 2019)(Fig.…”

Section: 본 론unclassified

Status of Tin Mineral Resources according to the Geological Characteristics and Mineralization in Mongolia

Choi,

Kim,

Cho

et al. 2023

J. Korean Soc. Miner. Energy Resour. Eng.

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A strategy for establishing the supply chain of tin, which is used in various industries, is necessary because tin's supply and demand are highly dependent on a few countries. Focusing on Mongolia as a resource-rich country, this study examines the current state of tin mineral resources and characteristics of tin mineralization according to the tectonic environment. The magmatic activity that occurred from the Late Paleozoic to the Late Mesozoic is related to tin mineralization in Mongolia. Most tin ore bodies occur as wolframite-cassiterite-quartz veins of postmagmatic hydrothermal type. They were concentrated in central and eastern region of Mongolia. The tin ore-bearing igneous rocks in Mongolia include ongonite, granodiorite-granite, leucogranite, and lithium-fluorine granite.

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Section: 본 론unclassified

Status of Tin Mineral Resources according to the Geological Characteristics and Mineralization in Mongolia

Choi,

Kim,

Cho

et al. 2023

J. Korean Soc. Miner. Energy Resour. Eng.

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“…Therefore, it can be applied to improve the traditional geological mapping process with satellite data, which can be used at no additional cost. Unfortunately, only a few studies have been mapped previously using remote sensing techniques within the territory of Mongolia (Stolz 2008;Son et al, 2012;Munkhsuren et al, 2019;Son et al, 2019;Son et al, 2021). Apart from this, the study area is located in the Gobi Desert, which spans through the southern and eastern parts of Mongolia.…”

Section: Original Article Mongolian Geoscientistmentioning

confidence: 99%

Lithological mapping using remote sensing techniques: A case study of Alagbayan area, Dornogobi province, Mongolia

et al. 2021

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This study investigated the multispectral remote sensing techniques including ASTER, Landsat 8 OLI, and Sentinel 2A data in order to distinguish different lithological units in the Alagbayan area of Dornogobi province, Mongolia. Therefore, Principal component analysis (PCA), Band ratio (BR), and Support Vector Machine (SVM), which are widely used image enhancement methods, have been applied to the satellite images for lithological mapping. The result of supervised classification shows that Landsat data gives a better classification with an overall accuracy of 93.43% and a kappa coefficient of 0.92 when the former geologic map and thin section analysis were chosen as a reference for training samples. Moreover, band ratios of ((band 7 + band 9)/band 8) obtained from ASTER corresponds well with carbonate rocks. According to PCs, PC4, PC3 and PC2 in the RGB of Landsat, PC3, PC2, PC6 for ASTER data are chosen as a good indicator for different lithological units where Silurian, Carboniferous, Jurassic, and Cretaceous formations are easily distinguished. In terms of Landsat images, the most efficient BR was a ratio where BRs of 5/4 for alluvium, 4/7 for schist and 7/6 to discriminate granite. In addition, as a result of BR as well as PCA, Precambrian Khutag-Uul metamorphic complex and Norovzeeg formation can be identified but granite-gneiss and schist have not given satisfactory results.

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“…The most common uses of satellite remote sensing data for regional-scale mineral survey projects in the past decade have been mineral discovery via hydrothermal alteration and mapping of structural geology [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. The phyllic alteration region is typically defined by pyritequartz-sericite rocks with a high OH-Al absorbance peak at 2.20 μm, which corresponds to Advanced Spaceborne Thermal Emission and Reflection Radiometer band 6 [3].…”

Section: Introductionmentioning

confidence: 99%

Mapping Hydrothermal Alteration Zones Associated with Copper Mineralization using ASTER Data: A Case Study from the Mirjaveh Area, Southeast Iran

Nasab

Agah

2023

IJE

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In this research, ASTER satellite images and the combined algorithm of band ratios with the method of logical operators with the determination of the threshold limit based on ground, laboratory and experimental studies have been used in order to highlight hydrothermal alterations. Image transformation techniques such as specialized band ratio and principal component analysis are used to map lithologic units and alteration minerals. Supervised classification technique, i.e. Spectral Angle Mapper (SAM) is applied to detect subtle differences between index alteration minerals associated with actual copper localities in the region. The results show that the integration of image transformation techniques and supervised classification of ASTER data with field studies and geochemical exploration is highly effective in targeting new copper mineralization prospects. Copper mineralization is found in siliceous veins that strike from north-south to northeast-southwest across the region. Remote sensing evidence supports the presence of propylitic and argillic alteration, which can be useful for searching for coppergold type deposits. Kaolinite and pyrophyllite play a role in identifying arzilic alteration zones, and muscoite, epidote and chlorite minerals are very important in identifying pyropilitic and phyllic areas and in mineral exploration. Based on remote sensing processing, according to the detection of various alterations (phyllic, pyrophyllite and argillic) in this area, possible copper mineralization was detected in the central part of the studied area. The approach used in this research provides a quick and costeffective means of initiating comprehensive geological and geochemical exploration programs in the study area and elsewhere in similar areas.

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Regional mineral mapping of island arc terranes in southeastern Mongolia using multi-spectral remote sensing data

Cited by 15 publications

References 65 publications

Status of Tin Mineral Resources according to the Geological Characteristics and Mineralization in Mongolia

Status of Tin Mineral Resources according to the Geological Characteristics and Mineralization in Mongolia

Lithological mapping using remote sensing techniques: A case study of Alagbayan area, Dornogobi province, Mongolia

Mapping Hydrothermal Alteration Zones Associated with Copper Mineralization using ASTER Data: A Case Study from the Mirjaveh Area, Southeast Iran

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