Baruunnaran coal deposit is located in southern Mongolia and belongs to Tavantolgoi coal zone of South Gobi Basin. Coal seams are hosted in the middle Permian Tavantolgoi Formation, which is subdivided into lower and upper member based on lithological characteristics. Ten sandstone samples collected from exploration drill holes. …
Khujirt is a syncline that hosts Jurassic coal deposit in Northern Mongolia. Nine coal samples collected from exploration borehole were selected for analyses of major oxide and trace elements of coal ash. The average value of CAI for the samples is 82.8, reflecting intensive weathering in the source area. The plotted data on A-CN-K diagram …
his paper reports the results of whole rocks petrography. Based on petrographical analysis, we determined granodiorite, syeni. p. roxenite, rhy. lite and crysstallolithoclastic intermedia. e-acidic tufflava, skarn, gneiss and metasomatite. The rocks are strongly exposed to silicification, carbonatization, chloritization, sericitization and ...
first time to infer the provenance and tectonic setting of source area. The sandstones were classified into two. types: feldspathic litharenite and lithic arkose. The samples weremore enriched in volcanic rock fragments compared with sedimentary and metamorphic rock fragments. Using various ternary diagrams, sandstone provena. ce.