Zobrazeno 1 - 10
of 7 650
pro vyhledávání: '"u-pb dating"'
Publikováno v:
Swiss Journal of Geosciences, Vol 117, Iss 1, Pp 1-25 (2024)
Abstract The Troiseck-Floning and Rosskogel nappes are part of the Austroalpine Unit in the eastern part of the Eastern Alps. The nappes are in tectonic contact and comprise Permian to Mesozoic lower greenschist facies metamorphic metasediments, but
Externí odkaz:
https://doaj.org/article/f5541a339eac4ce98867168f10e7cdb5
Publikováno v:
Frontiers in Earth Science, Vol 12 (2024)
Research on the geological process of the Xing’an - Mongolia Orogenic Belt has attracted the attention of scholars both domestically and internationally. Its genesis and tectonic location may help revealing the geological processes asscoaited with
Externí odkaz:
https://doaj.org/article/8f3e487d3abf458f9344c197f95276e9
Autor:
Kang Wang, Yinhong Wang, Jun Deng, Jiajun Liu, Fangfang Zhang, Wei Zhang, Hui Zhang, Wenxin Gu, Hong Chen
Publikováno v:
Geoscience Frontiers, Vol 15, Iss 5, Pp 101877- (2024)
The unique ore-forming processes and the key factors responsible for formation of skarn deposits are still obscure, and challenges exist in the determination of timing of Pb-Zn skarns owing to lacking suitable mineral chronometers. Here we present de
Externí odkaz:
https://doaj.org/article/a8877951302948a3b3f9c51aba6ec720
Publikováno v:
Geoscience Frontiers, Vol 15, Iss 5, Pp 101875- (2024)
The Vuoriyarvi massif is a Devonian multistage alkaline-ultrabasic carbonatite complex within the Kola alkaline province. Dolomite carbonatites of the Vuoriyarvi massif contain abundant rare-earth mineralization mainly represented by ancylite-(Ce) an
Externí odkaz:
https://doaj.org/article/911c9733efd149d3b310179c1b86d986
Autor:
Chenglong Fan, Jingwen Mao, Huishou Ye, Yitian Wang, Junchen Liu, Wei Jian, Xuyang Meng, Wenhao Tang, Weiwei Chao, Peng Wang
Publikováno v:
Geoscience Frontiers, Vol 15, Iss 4, Pp 101812- (2024)
The Haoyaoerhudong gold deposit, located in the northwestern part of the North China craton (NCC), has produced over 120 metric tonnes (t) of gold since 2007. It has a total reserve of > 240 t at average gold grade of 0.62 g/t, making it one of the l
Externí odkaz:
https://doaj.org/article/18feabebb02945828e592cac5fc8138f
Autor:
E.V. Vetrov, N.I. Vetrova
Publikováno v:
Geoscience Frontiers, Vol 15, Iss 4, Pp 101803- (2024)
Magmatism associated with oceanic subduction plays a dominant role in crustal growth during the Earth’s evolution. The Tannuola terrane, situated in the northern Central Asian Orogenic Belt (CAOB), is a key area to understanding oceanic subduction
Externí odkaz:
https://doaj.org/article/d188105629ef42d4a9cb1de3acb36d17
Publikováno v:
Taiyuan Ligong Daxue xuebao, Vol 55, Iss 2, Pp 296-305 (2024)
Purposes The Hutuo Group belongs to the Early Proterozoic strata. As one of the most typical Paleoproterozoic strata in North China, the timing redefinition of the Hutuo Group is of great significance to the establishment of the early Precambrian str
Externí odkaz:
https://doaj.org/article/64444f4942b942ab81dc673030d7211d
Publikováno v:
Kuangchan zonghe liyong, Vol 45, Iss 1, Pp 99-108 (2024)
This is an article in the field of earth sciences. Magmatic rocks of the Gondwana Belt are one of the most popular problems in basic geological research on the Xizang-Qinghai Plateau. In this paper, we analyze the physical origin and regional tectoni
Externí odkaz:
https://doaj.org/article/6a3124a554e14aa881f6afe5be20e0a5
Autor:
Chun Fan
Publikováno v:
Open Geosciences, Vol 16, Iss 1, Pp 209-304 (2024)
A large set of Paleozoic volcaniclastic rocks is exposed in the northwestern margin of the Junggar Basin from the southern part of the Central Asian Orogenic Belt. The Carboniferous volcaniclastic strata in this area have been studied in depth, and a
Externí odkaz:
https://doaj.org/article/1531e91abb9740fa86b172ca4e7cde05
Autor:
DANG Feipeng, LYU Chuan, TANG Xiangsheng, ZHANG Yong, XIAO Zhibin, LI Zhipeng, TANG Junyang, ZHANG Tao
Publikováno v:
Dizhi lixue xuebao, Vol 29, Iss 6, Pp 898-914 (2023)
The Dongshang Uranium Deposit is situated in the southern section of the Ganfang Pluton in the Jiuling Orogenic Belt of northwestern Jiangxi Province. The U-bearing granites consist mainly of medium- to coarse-grained, porphyritic biotite(binary) gra
Externí odkaz:
https://doaj.org/article/2050a207e15e4730bc749dabc31c860e