Mongolian Geoscientist <p>published by the <a title="MUST" href="" target="_blank" rel="noopener">Mongolian University of Science and Technology </a>with support from <a title="Mongolian Geological Society" href="" target="_blank" rel="noopener">The Geological Society of Mongolia</a>.</p> <p><strong>Abstracting and indexing in <a title="Google Scholar" href="" target="_blank" rel="noopener">Google Scholar</a>, <a title="Dimensions" href="" target="_blank" rel="noopener">Dimensions,</a> <a title="DOAJ" href="" target="_blank" rel="noopener">DOAJ</a>, <a title="EBSCO Discovery service" href="" target="_blank" rel="noopener">EBSCO Discovery service,</a> <a title="CNKI" href="" target="_blank" rel="noopener">CNKI</a> and </strong></p> <p><strong>Accepted for <a title="Georef" href="" target="_blank" rel="noopener">Georef</a>, <a title="MGS - Title evaluation tracking" href="" target="_blank" rel="noopener">Scopus</a></strong></p> en-US <p>Copyright on any research article in the <strong>Mongolian Geoscientist</strong> is retained by the author(s).</p> <p>The authors grant the <strong>Mongolian Geoscientist</strong> a license to publish the article and identify itself as the original publisher.</p> <p><a href="" rel="license"><img src="" alt="Creative Commons Licence"></a><br>Articles in the <strong>Mongolian Geoscientist</strong> are Open Access articles published&nbsp;under a <a href="" rel="license">Creative Commons Attribution 4.0 International License</a> CC BY.</p> <p>This license permits use, distribution and reproduction in any medium, provided the original work is properly cited.</p> <p>&nbsp;</p> (Bayaraa Batkhishig) (Gantulga Lkhagva) Mon, 03 Apr 2023 00:38:21 +0000 OJS 60 The Paleozoic Granitic Rocks from the Telmen Complex in the Tarvagatai Block, Central Mongolia: Petrogenesis, U-Pb geochronology, and its tectonic implications <p>The Tarvagatai Block is located in the northern part of Central Mongolia, which is a widespread occurrence and occupies roughly 60% of the whole exposure along the Khangai fault and the Tarvagatai uplift. Granitic magmatism was emplacement during the Middle Paleozoic, which is predominantly composed of granite-granodiorite and gabbro-diorite and rarely gabbro. This article represents petrographical, geochemical, and U-Pb zircon age data from the Telmen Complex of the Tarvagatai Block, Central Mongolia. The U-Pb dating of zircon yields a Late Silurian emplacement age (419±3 Ma) for the Telmen Complex. Geochemically, the Telmen Complex is an I-type intrusion of metaluminous nature with a SiO<sub>2</sub> content ranging from 53.06 to 72.25 wt.% and mainly of medium to high K calc-alkaline series. Telmen Complex granites show enrichments in light rare earth elements, depletion in heavy rare earth elements, with a ratio of 4.053, (La/Yb)<sub>N</sub> =9.15, and weak positive or normal Eu anomalies. A spider diagram indicates that these rocks are enriched in Ba, K, Pb, and Sr and depleted in Nb, Ta, and Ti. The Early Paleozoic Telmen Complex granitics have trace element features, for example, Nb-Ta depletions, which indicate that these rock units were emplaced in a convergent-margin setting and typical of the lower continental crust. In addition, the geochemical data show that the volcanic arc tectonic setting and, moreover, the continental arc array setting display on the Nb/Yb versus TiO<sub>2</sub>/Yb diagrams. Therefore, we suggest that they were probably positioned in an active continental setting and in a Silurian ~419 Ma. </p> Naidansuren Tungalag, Bayaraa Ganbat, Sukhbat Baasansuren, Gansukh Orgil, Davaadorj Enkhhtsatsral, Myamarsuren Batmunkh Copyright (c) 2022 Tungalag Naidansuren, Ganbat Bayaraa, Baasansuren Sukhbat, Orgil Gansukh, Enkhhtsatsral Davaadorj, Batmunkh Myamarsuren Mon, 03 Apr 2023 00:00:00 +0000