Results 181 to 190 of about 5,118,389 (220)

AGE CONSTRAINTS AND TECTONIC SETTINGS OF METALLOGENIC AND MAGMATIC EVENTS IN THE VERKHOYANSK-KOLYMA FOLDED AREA

Геология и геофизика, 2018
Abstract The paper presents new isotope geochronological data for several mineral deposits, ore occurrences, and related igneous bodies (plutons and dikes) in the Verkhoyansk–Kolyma folded area, eastern Yakutia. Twenty-one 40Ar/39Ar mica and four U–Pb zircon dates provide the first age constraints on key metallogenic units in the area ...
A.V. Prokopiev, A.S. Borisenko, G.N. Gamyanin, G.G. Pavlova, V.Yu. Fridovsky, L.A. Kondrat’eva, G.S. Anisimova, V.A. Trunilina, A.I. Ivanov, A.V. Travin, O.V. Koroleva, D.A. Vasiliev, A.V. Ponomarchuk   +12 more
openaire   +2 more sources

The Discovery of a New Metallogenic Province in Sardinia (Italy): Au–Ag Mineralisations of Tertiary Age

2012
The Oligo-Miocene volcanic cycle was accompanied by intense hydrothermal phenomena, which produced extensive alteration zones and ore deposition, mostly of precious metals. The low price of gold before the seventies prevented any considerations for these occurrences.
S. FADDA, M. FIORI, GRILLO, SILVANA MARIA   +2 more
openaire   +4 more sources

Geochemical evidences of metallogenic materials’ source in Xiong’ershan Au-Ag orefield, Henan

Journal of Central South University of Technology, 1996
The H. O. S isotopic geochemical features and the REE geochemical parameters of some deposits in Xiong’ershan region are discussed, and the coherent various geological bodies are confirmed.
Tagen Dai, Baojing Guo, Jiantang Peng, Guangmin Gao   +3 more
openaire   +1 more source

The Environmental Impact of Gold Mines in the Yugu-Kwangcheon Au-Ag Metallogenic Province, Republic of Korea

Environmental Technology, 1998
An investigation was made of the degree and extent of heavy metals in tailings, stream waters, sediments, soils and crop plants in the Yugu-Kwangcheon Au-Ag Province, comprising the Gubong, Daebong...
K. W. Kim, H. K. Lee, B. C. Yoo
openaire   +1 more source

Age and genesis of the Pusangguo skarn Cu-dominated polymetallic deposit, Gangdese metallogenic belt, Tibet

Journal of Asian Earth Sciences, 2019
Abstract The Pusangguo skarn Cu-polymetallic deposit is a newly discovered deposit in the western Gangdese porphyry copper belt (GPCB). The orebodies are hosted along the contact between limestone of the Early Cretaceous Takena Formation and a biotite granodiorite intrusion. The mineralization is associated with the biotite granodiorite intrusion and
Zhuang Li, Xinghai Lang, Daniel Rickleman, Jilin Duan, Qizhi Zhang   +4 more
openaire   +1 more source

Mineralization age and metallogenic environment of Daotuo manganese deposits in Guizhou: Evidence from Re-Os isotopes

Chinese Science Bulletin, 2017
The Neoproterozoic is a critical interval in Earth’s history, having witnessed the breakup of supercontinent Rodinia, global glaciations (or the snowball Earth), and the evolution of multicellular organisms. It is proposed that the breakup of Rodinia might have triggered the snowball Earth, while the termination of the Neoproterozoic global glaciations
HaoXiang PEI, Yong FU, Chao LI, YanHe LI, ZhengZe AN   +4 more
openaire   +1 more source

Ages and geodynamic settings of Xilamulun Mo–Cu metallogenic belt in the northern part of the North China Craton

Gondwana Research, 2009
Abstract The Xilamulun belt along the northern part of the North China Craton is located in eastern segment of the Central Asian Orogenic Belt and has great economic potential for Mo–Cu mineralization. More than ten medium to large ore deposits have been discovered in this region in the recent years.
Lian-chang Zhang, Hua-ying Wu, Bo Wan, Zhi-guang Chen   +3 more
openaire   +1 more source

Zircon U–Pb ages and geochemistry of granitoids in the Truong Son terrane, Vietnam: Tectonic and metallogenic implications

Journal of Asian Earth Sciences, 2015
Abstract Truong Son terrane, one of the most important tectonic and metallogenic terranes in Indochina block, is composed of many volcano–plutonic complexes. Reported here is geochronological and geochemical data obtained from six different volcano–plutonic complexes.
Mei-Feng Shi, Fang-Cheng Lin, Wen-Yu Fan, Qi Deng, Feng Cong, My-Dung Tran, Hua-Ping Zhu, Hong Wang   +7 more
openaire   +1 more source

Geology and origin of Ag–Pb–Zn deposits occurring in the Ulaan-Jiawula metallogenic province, northeast Asia

Journal of Asian Earth Sciences, 2015
Abstract Located at the conjunction area of China, Mongolia and Russia in NE Asia, the Ulaan-Jiawula (also referred as UJ) region, with an area of 400,000 km 2 , is one of the most important Ag–Pb–Zn, U, Sn, W, Nb–Ta, and Au metallogenic provinces in Asia.
Feng-jun Nie, Qiang-feng Li, Chun-hua Liu, Cheng-wu Ding   +3 more
openaire   +1 more source

Two Ages of Copper Mineralization in the Mwombezhi Dome, Northwestern Zambia: Metallogenic Implications for the Central African Copperbelt

Economic Geology, 2015
Approximately 10% of copper resources in the Central African Copperbelt, the world’s largest, sediment-hosted stratiform copper province, occur in the Domes region of northwestern Zambia. The copper deposits and prospects are commonly hosted by amphibolite-facies metamorphic rocks and lie within or adjacent to several basement inliers.
Richard H. Sillitoe, José Perelló, Robert A. Creaser, John Wilton, Toby Dawborn   +4 more
openaire   +1 more source