Geological characteristics and age of the Dahongliutan Fe-ore deposit in the Western Kunlun orogenic belt, Xinjiang, northwestern China

2016 ◽  
Vol 116 ◽  
pp. 1-25 ◽  
Author(s):  
Jun Hu ◽  
He Wang ◽  
Chaoyang Huang ◽  
Laixi Tong ◽  
Shenglu Mu ◽  
...  
Keyword(s):  
Orogenic Belt ◽  
Northwestern China ◽  
Ore Deposit ◽  
Geological Characteristics ◽  
Western Kunlun

Petrology and geochemistry of shoshonitic plutons from the western Kunlun orogenic belt, Xinjiang, northwestern China: implications for granitoid geneses

Lithos ◽  
2002 ◽  
Vol 63 (3-4) ◽  
pp. 165-187 ◽  
Author(s):  
Yao-Hui Jiang ◽  
Shao-Yong Jiang ◽  
Hong-Fei Ling ◽  
Xun-Ruo Zhou ◽  
Xing-Jian Rui ◽  
...  
Keyword(s):  
Orogenic Belt ◽  
Northwestern China ◽  
Western Kunlun ◽  
Petrology And Geochemistry

Late Cenozoic Coal Fires in the Liuhuanggou Area (Xinjiang, Northwestern China): Ages, Controlling Factors and Evolution

2021 ◽  
Author(s):  
B. Chen ◽  
M. Franceschi ◽  
Y. Wang ◽  
X. Duan ◽  
X. Jin ◽  
...  
Keyword(s):  
Orogenic Belt ◽  
Central Asian Orogenic Belt ◽  
Northwestern China ◽  
Metamorphic Rocks ◽  
Coal Seams ◽  
Erosion And Deposition ◽  
Fluvial Terraces ◽  
Coal Fire ◽  
Central Asian ◽  
Coal Fires

Abstract —Coal fires are a phenomenon that can be observed worldwide in areas where rocks containing coal seams are exposed and can pose major environmental threats. A coal fire can begin through spontaneous combustion when coals are exposed to dry and oxygen-rich near-surface conditions. Burning, depending on the temperature of heating, causes baking or even melting of the surrounding rocks and the formation of different types of combustion metamorphic rocks. In Northwestern China, coal fire occurrences are concentrated at the edges of the sedimentary basins or at the margins of orogenic belts, where coalrich units were exposed owing to the Indo-Eurasian collision. On the northern margin of the Tianshan range, evidence of coal fires is widespread in the Jurassic sedimentary units containing coal seams which outcrop along the Central Asian Orogenic Belt. In some cases, coal fires are active and can be linked to ongoing mining activity, but outcrops of combustion metamorphic rocks not associated with fires are also found and are indicative of past burning events. We examine combustion metamorphic rocks outcropping in the Toutunhe River valley (Liuhuangou area, Xinjiang, Northwestern China). Combustion metamorphic rocks in the study area were mapped and classified according to their morphological and mineralogical characteristics. Outcrops are exposed at various heights on the valley flanks, which are characterized by the presence of multiple levels of fluvial terraces. These terraces are indicative of the phases of erosion and deposition of the Toutunhe River and testify to tectonic uplift. The investigation of the stratigraphic and crosscutting relationship of combustion metamorphic rocks with terrace deposits and apatite fissiontrack dating made it possible to determine that at least four phases of coal fire activity occurred from late Miocene to Quaternary. The first and oldest burning phase dates back to 10 ± 1.3 Ma and terminated prior to 2–3 Ma; the second was active before ~550 ka; the third had terminated by ~140 ka; the fourth began later than ~5.7 ka. The relationships between combustion metamorphic rocks and fluvial terraces further suggest that coal fire ignition/extinction in the area since the Miocene have been linked to the interplay between the uplift of the Central Asian Orogenic Belt and the phases of fluvial erosion and deposition in interglacial periods.

scholarly journals Dunhuang Tectonic Belt in northwestern China as a part of the Central Asian Orogenic Belt: Structural and U-Pb geochronological evidence

2018 ◽  
Vol 747-748 ◽  
pp. 281-297 ◽  
Author(s):  
Lamei Feng ◽  
Shoufa Lin ◽  
Donald W. Davis ◽  
Cees R. van Staal ◽  
Chuanzhong Song ◽  
...  
Keyword(s):  
Orogenic Belt ◽  
Central Asian Orogenic Belt ◽  
Northwestern China ◽  
Central Asian ◽  
Tectonic Belt ◽  
Geochronological Evidence

Geological Characteristics and Metallogenic Setting of Representative Magmatic Cu‐Ni Deposits in the Tianshan‐Xingmeng Orogenic Belt, Central Asia

2019 ◽  
Vol 93 (5) ◽  
pp. 1205-1218
Author(s):  
Chunming HAN ◽  
Wenjiao XIAO ◽  
Benxun SU ◽  
Xiaohui ZHANG ◽  
Bo WAN ◽  
...  
Keyword(s):  
Central Asia ◽  
Orogenic Belt ◽  
Geological Characteristics

scholarly journals Metallogeny of the Tethyan Orogenic Belt: From Mesozoic Magmatic Arcs to Cenozoic Back-Arc and Postcollisional Settings in Southeast Europe, Anatolia, and the Lesser Caucasus: An Introduction

2019 ◽  
Vol 114 (7) ◽  
pp. 1227-1235 ◽  
Author(s):  
Robert Moritz ◽  
Timothy Baker
Keyword(s):  
Western Europe ◽  
Orogenic Belt ◽  
Mississippi Valley ◽  
Southeast Europe ◽  
Ore Deposit ◽  
Mountain Ranges ◽  
Metallogenic Belt ◽  
Wide Range ◽  
Lesser Caucasus ◽  
Back Arc

Introduction The Tethyan mountain ranges stretch from northwestern Africa and western Europe to the southwest Pacific Ocean and constitute the longest continuous orogenic belt on Earth. It is an extremely fertile metallogenic belt, which includes a wide diversity of ore deposit types formed in very different geodynamic settings, which are the source of a wide range of commodities mined for the benefit of society (Janković, 1977, 1997; Richards, 2015, 2016). There are other ore deposit types in this segment of the Tethyan metallogenic belt that are not covered in this special issue, such as bauxite and Ni laterite deposits (Herrington et al., 2016), ophiolite-related chromite deposits (Çiftçi et al., 2019), sedimentary exhalative and Mississippi Valley-type deposits (Palinkaš et al., 2008; Hanilçi et al., 2019), or deposits related to surficial brine processes (Helvacı, 2019).

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