Results 31 to 40 of about 1,616 (199)

Geology and mineralization of the Tiegelongnan supergiant porphyry-epithermal Cu (Au, Ag) deposit (10 Mt) in western Tibet, China: A review

China Geology, 2022
The Tiegelongnan Cu (Au, Ag) deposit in central Tibet contains more than 10 Mt of copper ranking 29th in the world. It is characterized by typical porphyry-epithermal alteration and mineralization.
Huan-huan Yang, Qin Wang, Yan-bo Li, Bin Lin, Yang Song, Yi-yun Wang, Wen He, Hong-wei Li, She Li, Jian-li Li, Chang-cheng Liu, Shi-bin Feng, Tang Xin, Xue-lian Fu, Xin-juan Liang, Qi Zhang, Bei-qi Wang, Yang Li   +17 more
doaj   +1 more source

Spatial Overlay Analysis of Geochemical Singularity Index α-Value of Porphyry Cu Deposit in Gangdese Metallogenic Belt, Tibet, Western China

Applied Sciences, 2023
The statistical modeling with ILR-RPCA-back CLR has two problems when dealing with the closure effect of geochemical data. Firstly, after performing isometric logratio (ilr) transformation, robust principal component analysis (RPCA) is employed for ...
Shunli Zheng, Xiaojia Jiang, Shunbao Gao
doaj   +1 more source

Homer as the first theologian: an allegory and symbol in Porphyry’s treatise ‘’On the сave of the nymphs’’ [PDF]

Вестник Православного Свято-Тихоновского гуманитарного университета: Сериа III. Филология, 2020
This article explores the hermeneutical principles that Porphyry of Tyre used for interpreting the description of the cave of the nymphs in the Odyssey.
Roman Soloviev
doaj   +1 more source

Archeo‐Inspiration from the Cultural History of Glass: Historic Accounts, Anecdotes and Hard Facts as Challenges to Modern Material Science

Advanced Materials, EarlyView.
Glass, historically valued for its purity and durability, has long inspired artists and societies. This article introduces the concept of “Archeo‐Inspiration”, drawing on cultural and historical contexts of glass to guide future material innovations.
Eva von Contzen, Julia von Ditfurth, Fabian Stroth, Bastian E. Rapp   +3 more
wiley   +1 more source

Multi‐Method Geophysical Surveys Between and Around the Kerlescan and the Manio Megalithic Alignments in Carnac (Morbihan, France)

Archaeological Prospection, EarlyView.
ABSTRACT The Carnac alignments in Morbihan (France) are among the most famous Neolithic sites of the world. Paradoxically, they have benefited little from a thorough renewal of archaeological data over the past century. There are many reasons for this, but it is mainly because the site has been regarded more as a monument to visit and protect than as ...
Guillaume Bruniaux, Vivien Mathé, Olivier Agogué, Sylvia Lopez, Philippe Paillou, Reena Perschke, Vincent Ard   +6 more
wiley   +1 more source

Experimental and constitutive modeling investigations on marble in Jinping Underground Laboratory

Deep Underground Science and Engineering, EarlyView.
The objective of this study is to reveal the underlying mechanisms behind the brittle‐ductile transition of the marble through a combination of experimental research and constitutive modeling. A series of triaxial compression and triaxial cyclic loading tests are conducted.
Susheng Wang, Qiang Zhang, Hao Luo, Zhinan Lin   +3 more
wiley   +1 more source

Migration and focusing of porphyry deposit-forming fluids through aplitic mush of the Saginaw Hill cupola, Arizona, United States

Frontiers in Earth Science
Porphyry-type Cu ± Au ± Mo deposits form in the upper (ca. 2–5 km deep) parts of large, long-lived magmatic-hydrothermal systems in which mineralising fluids are thought to be derived from mid-to shallow-crustal magma chambers.
Lawrence C. Carter, Lawrence C. Carter, Ben J. Williamson   +2 more
doaj   +1 more source

Critical Factors Controlling Pd and Pt Potential in Porphyry Cu–Au Deposits: Evidence from the Balkan Peninsula

Geosciences, 2014
Porphyry Cu–Au–Pd±Pt deposits are significant Au resources, but their Pd and Pt potential is still unknown. Elevated Pd, Pt (hundreds of ppb) and Au contents are associated with typical stockwork magnetite-bornite-chalcopyrite assemblages, at the central
Demetrios G. Eliopoulos, Maria Economou-Eliopoulos, Maria Zelyaskova-Panayiotova   +2 more
doaj   +1 more source

Neoarchean Arc Magmatism and Crust Recycling in the Northern Marginal Zone of the Limpopo Complex, Zimbabwe: New Insights From Zircon U‐Pb‐Hf Isotopes of a Charnockite Suite

Geological Journal, EarlyView.
Charnockites with 2691–2607 Ma magmatic ages from the NMZ show arc‐magmatic geochemical signatures. They correspond to the lower‐crustal equivalent of the Chilimanzi Suite Granite in the Zimbabwe Craton. Lu‐Hf isotopic data of magmatic zircons show negative εHf(t) values (−11.18 to −2.20) with TDMC ages of 3699–3158 Ma, suggesting their protolith ...
Toshiaki Tsunogae, Md. Sazzadur Rahman, Gao Pin, M. Santosh, Wataru Fujisaki, Sam Uthup, Prince Mandingaisa   +6 more
wiley   +1 more source

Contrasting apatite geochemistry between ore-bearing and ore-barren intrusions of the giant Kalmakyr gold-rich porphyry Cu deposit, Tien Shan, Uzbekistan

Frontiers in Earth Science, 2023
The Kalmakyr deposit in Uzbekistan is one of the world’s largest gold-rich porphyry Cu deposits, and mineralization was proposed to be closely associated with the emplacement of the latest intrusive phases, that is, granodiorite porphyry.
Yangtao Liu, Xiaobo Zhao, Chunji Xue, Chunji Xue, Bakhtiar Nurtaev, Jing Chen   +5 more
doaj   +1 more source