Zobrazeno 1 - 10
of 7 597
pro vyhledávání: '"u-pb dating"'
Autor:
Sherif Mansour, Noriko Hasebe, Kamal Abdelrahman, Mohammed S. Fnais, Mohamed A. Gharib, Rabiou Habou, Akihiro Tamura
Publikováno v:
Geochemical Transactions, Vol 25, Iss 1, Pp 1-23 (2024)
Abstract The magmatic complex along the Marsa Alam-Idfu transect, Central-Eastern Desert of Egypt, represents the northern segment of the Arabian–Nubian Shield (ANS), which developed within the framework of the East African Orogen. The basement roc
Externí odkaz:
https://doaj.org/article/fa2336b7d32243eb86c88dfb77b7a829
Publikováno v:
Petroleum Exploration and Development, Vol 51, Iss 5, Pp 1083-1096 (2024)
Based on the observation and analysis of cores and thin sections, and combined with cathodoluminescence, laser Raman, fluid inclusions, and in-situ LA-ICP-MS U-Pb dating, the genetic mechanism and petroleum geological significance of calcite veins in
Externí odkaz:
https://doaj.org/article/4af29105ee9947f9af81f47e08dade18
Autor:
Degao ZHANG, Xiaotao XU, Jie SUN, Fuqiang ZHANG, Baoqing LI, Li ZHANG, Xinguo ZHUANG, Xiaoyun YAN
Publikováno v:
Meitan xuebao, Vol 49, Iss 9, Pp 3884-3895 (2024)
Lithium element enrichment is widely observed in the coal-bearing series of the Late Permian Heshan Formation in Shanglin, Guangxi, which has potential economic value and research significance. In this study, a multi-proxy study was conducted for eva
Externí odkaz:
https://doaj.org/article/f0a18780084f421498b080213e1179ef
Autor:
Bazarnik Jakub, Matejová Marína Molčan, Lenik Piotr, Plašienka Dušan, Potočný Tomáš, Pańczyk Magdalena
Publikováno v:
Mineralogia, Vol 55, Iss 1, Pp 40-47 (2024)
Volcanic rocks in the Pieniny Klippen Belt (PKB) of the Western Carpathians have been the focus of geologists for over a century (e.g. Uhlig, 1890; Małkowski, 1921). Miocene volcanism is most common in the PKB. However, there are infrequent occurren
Externí odkaz:
https://doaj.org/article/a55c2f3216b7495293ba81a14d115af1
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:
V. V. Silantiev, Ya. M. Gutak, M. Tichomirowa, A. V. Kulikova, A. S. Felker, M. N. Urazaeva, L. G. Porokhovnichenko, E. V. Karasev, A. S. Bakaev, V. V. Zharinova, M. A. Naumcheva
Publikováno v:
Georesursy, Vol 25, Iss 2, Pp 203-227 (2024)
Tonsteins, predominantly solid kaolinite clay interbeds, are widespread in the coals of the Kuznetsk Basin and usually contain idiomorphic zircon grains of magmatic origin in quantities suitable for uranium-lead (U-Pb) radiometric dating. For the fir
Externí odkaz:
https://doaj.org/article/adaff50026024ed7bfe3317018819150
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
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
Autor:
E. N. Terekhov, N. B. Kuznetsov, T. V. Romanyuk, M. A. Matveev, A. B. Makeev, A. S. Novikova, M. Yu. Gushchina, A. S. Dubenskiy, V. S. Sheshukov, A. A. Iurmanov
Publikováno v:
Геодинамика и тектонофизика, Vol 15, Iss 4 (2024)
The paper presents the results of U-Pb isotope dating of zircons extracted from rocks of the southern part of the Baltic Shield (Early Riphean conglomerates and Paleoproterozoic secondary quartzites) and makes a comparison of these results with the a
Externí odkaz:
https://doaj.org/article/3de724217cd44598bb98e9bfd2c093aa