Results 61 to 70 of about 684 (154)

Large Contact Aureole Overprinting the Ryoke Regional Metamorphic Zoning: Insights From the Takato–Komagane Area, Central Japan

Island Arc, Volume 34, Issue 1, January/December 2025.
ABSTRACT The Ryoke metamorphic belt records the conditions of the middle–upper crust during Cretaceous crustal deformation and magmatism. To understand the development and evolution of the middle–upper crust, it is important to investigate the thermal structure of the Ryoke metamorphic belt.
Takuro Yoshioka, Hideo Takagi, Hiroyuki Nagahama, Tomoki Taguchi   +3 more
wiley   +1 more source

Rare‐Earth Mineralization in Dong Pao Deposit, Laichau Province, Vietnam

Resource Geology, Volume 75, Issue 1, January/December 2025.
ABSTRACT The Dong Pao deposit in northern Vietnam is associated with the Paleogene Dong Pao Syenite Complex, which intruded into the limestone of the Triassic age. Although the Dong Pao deposit has been attracting exploration for decades as a promising rare earth deposit, it has not been well studied in terms of mineralization style and formation ...
Tinh Thanh Bui, Yasushi Watanabe, Carmela Alen J. Tupaz, Takuya Echigo, Shogo Aoki, Mihoko Hoshino   +5 more
wiley   +1 more source

Nanomineralogy of thorite in the supergiant Huayangchuan uranium ore deposit: Revealing a new geochemical behavior of actinide in environment

Thorium (Th) is a naturally occurring radioactive element found in the environment, and recent advancements have been made in identifying and characterizing Th-bearing nanoparticles (NPs).
Liu, Rui, Zuo, Lei, Wan, Jianjan, Zhang, Peng, Zhang, Xiaoheng, Wang, Yaqin   +5 more
core   +1 more source

Redistribution of REE, Y, Th, and U at high pressure: Allanite-forming reactions in impure meta-quartzites (Sesia Zone, Western Italian Alps)

, 2012
International audienceAccessory phases are important hosts of trace elements; allanite may contain >90% of the REE in a bulk rock. The mobility and redistribution of several trace elements, notably HREE, Th, U, and Y is thus controlled by reactions ...
Cenki-Tok, B., Darling, James, Regis, Daniele, Regis, D., Cenki-Tok, Bénédicte, Engi, Martin, Darling, J., Engi, M.   +7 more
core   +1 more source

Sequence of REE-Th-U minerals in the Litsa uranium ore area (the Kola Region)

Vestnik MGTU, 2019
Mineralogical and petrographic study of REE-Th-U mineralization in rocks of the Litsa uranium ore area has been carried out to detail the sequence of formation of rare-earth, uranium and thorium minerals in rocks.
Kaulina T. V. , Lialina L. M. , Ilchenko V. L.   +2 more
doaj   +1 more source

Geochemical Split Among the Suspended and Mud Sediments in the Nethravati River: Insights to Compositional Similarity of Peninsular Gneiss and the Deccan Basalt Derived Sediments, and Its Implications on Tracing the Provenance in the Indian Ocean

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 7, July 2024.
Abstract Major, trace, and rare earth element (REE) geochemistry of sediments from a tropical mountain river is investigated to understand the behavior of chemical elements during weathering and transportation in a Peninsular Gneissic terrain. The results from this study are compared with the Deccan Basalt‐derived River sediments and the eastern ...
G. P. Gurumurthy
wiley   +1 more source

Rare metal mineralization in albite-bearing granites of Western Trans-Baikal

Литосфера, 2019
Research subject. The article presents results of mineralogical and geochemical investigation of albite-bearing granites with high concentrations of trace elements located in the Western Trans-Baikal region.Methods.
M. O. Rampilov, G. S. Ripp
doaj   +1 more source

Structural Evolution, Exhumation Rates, and Rheology of the European Crust During Alpine Collision: Constraints From the Rotondo Granite—Gotthard Nappe

Tectonics, Volume 43, Issue 6, June 2024.
Abstract The rheology of crystalline units controls the large‐scale deformation geometry and dynamics of collisional orogens. Defining a time‐constrained rheological evolution of such units may help unravel the details of collisional dynamics. Here, we integrate field analysis, pseudosection calculations and in situ garnet U–Pb and mica Rb–Sr ...
A. Ceccato, W. M. Behr, A. S. Zappone, L. Tavazzani, A. Giuliani   +4 more
wiley   +1 more source

Radiological risk and mineralogical analysis of radionuclides in granitic rocks: Environmental insights

Nuclear Engineering and Technology
This study investigates the activity concentrations of naturally occurring radionuclides, particularly 238U, 232Th, and 40K, in granitic rocks from the Gabal Abu Garadi region in Central-Eastern Egypt.
Sherif A. Taalab, Diaa A. Saadawi, Turki Kh Faraj, Mayeen Uddin Khandaker, Mahmoud R. Khattab, Mohamed Y. Hanfi   +5 more
doaj   +1 more source

Using Stochastic Point Pattern Analysis to Track Regional Orientations of Magmatism During the Transition to Cenozoic Extension and Rio Grande Rifting, Southern Rocky Mountains

Tectonics, Volume 43, Issue 2, February 2024.
Abstract The southern Rocky Mountains in Colorado and northern New Mexico hosted intracontinental magmatism that developed during a tectonic transition from shortening (Laramide orogeny, ca. 75 to 40 Ma) through extension and rifting. We present a novel approach that uses stochastic weighted bootstrap simulations of a large set of new and historical ...
J. M. Rosera, S. P. Gaynor, A. Ulianov, U. Schaltegger   +3 more
wiley   +1 more source