Results 31 to 40 of about 1,312 (211)

On reasons of specific composition of the Keivy domain rocks (the Kola Peninsula) [PDF]

Vestnik MGTU, 2017
The Keivy domain differs from the other structures of the Kola region by the specific composition of the metamorphic complexes, the presence of the oldest for the region alkaline granites and gabbroanorthosites associated with them as well as by the ...
Kozlov N. E., Fomina E. N., Martynov E. V., Sorokhtin N. O., Marchuk T. S.   +4 more
doaj   +1 more source

Metallogenic Prediction of Magnetite in the Pandian Area at the Northwest Margin of Luxi Uplift, China: Constraints of Wide-Field Electromagnetic Data

Remote Sensing, 2023
The Pandian deposit is a newly discovered contact metasomatic skarn magnetite deposit found in the Cainozoic super-thick overburden on the northwest margin of Luxi Uplift (LXU).
Jianxin Liu, Keke Zhou, Hongda Liu, Rongwen Guo, Yunqi Zhu, Zihao Zhang, Rong Liu   +6 more
doaj   +1 more source

U-Th-He Geochronology of Pyrite from Alteration of the Au-Fe-Skarn Novogodnee-Monto Deposit (Polar Urals, Russia)—The Next Step in the Development of a New Approach for Direct Dating of Ore-Forming Processes

Geosciences, 2021
We report on the application of the U-Th-He method for the direct dating of pyrite from the alteration halo of the Novogodnee-Monto Au-Fe-skarn deposit, Polar Urals.
Olga Yakubovich, Ilya Vikentyev, Ekaterina Ivanova, Mary Podolskaya, Ivan Sobolev, Eugenia Tyukova, Alexander Kotov   +6 more
doaj   +1 more source

The geochemistry and element mobility during albitization and related uranium mineralization, Rohil deposit, Rajasthan, India

Discover Geoscience
The albitite-hosted, Mesoproterozoic Rohil uranium deposit (Latitude: 27° 33′ 25ʺ N; Longitude: 75° 29′ 25ʺ E) is located in the Sikar district, Rajasthan of Western India.
Debalin Rout, Rajagopal Krishnamurthi, Ambika Prasad Kushwaha, Shailendra Kumar Sharma   +3 more
doaj   +1 more source

A Reassessment of Petrochemistry of ~1.2 Ga Tonalitic Rocks of the Northern Tugela Terrane, Natal Metamorphic Belt, South Africa: Further Constraints on the Evolution of This Belt

Geological Journal, EarlyView.
Our petrochemical studies on ~1.2 Ga granitoids of the Natal Metamorphic Belt, South Africa, do not suggest any property similar to Phanerozoic‐style subduction‐related granitoids. Plot of Kotongweni Tonalite in Y versus Sr diagram (after Moyen 2011), note that most samples have Sr/Y < 50.
Palesa Leuta, Saumitra Misra, Thembiso O. Basupi   +2 more
wiley   +1 more source

Apatite in Carbonatite Preserving Primary Magmatic, Post‐Magmatic Overgrowth, and Post India‐Asia Collision‐Related Hydrothermal Alteration: Evidenced From U–Pb Isotope and Trace Element Geochemistry

Geological Journal, EarlyView.
U–Pb isotope and trace element geochemistry of apatite from carbonatites of Peshawar Plain Alkaline Igneous Province, western Himalaya shows Permo‐Carboniferous magmatism, an additional magmatic pulse during Cretaceous, and post‐magmatic hydrothermal/metasomatism during Oligocene. ABSTRACT U–Pb isotope and trace element geochemistry of apatite combined
Mehboob ur Rashid, Hafiz U. Rehman, Hao‐Yang Lee, Sun‐Lin Chung, Kaushik Das, Kazumasa Aoki, Muhammad Jawad Zeb, Nasir Ahmad, Muhammad Hussain, Hiroshi Yamamoto   +9 more
wiley   +1 more source

Cretaceous molybdenite in metasomatic epidosite associated with the Pounamu ophiolite, New Zealand [PDF]

, 2019
Epidosites occur in association with pelagic and quartzofeldspathic metasediments overlying the Pounamu suprasubduction zone ophiolite. They are dominated by epidote with minor diopside, tremolite, titanite, zircon and quartz. Detrital zircon age spectra
Alan F. Cooper (4103437), Anthony Reay (5581142), Trevor R. Ireland (7866890), Marc D. Norman (7866893)   +3 more
core   +1 more source

Sandyites and rocks of monzonite composition of the Ilmenogorsk miaskit massive (the Southern Urals)

Литосфера, 2017
The results of study of rocks of the Ilmenogorsk miaskite block - mylonitized miaskites, “sandyites” and monzonitic rocks, which were found for the first time, are presented in the paper.
B. Nemov Andrey, V. Medvedeva Elena, A. Kotlyarov Vasily   +2 more
doaj   +1 more source

Evaluating maturity of organic matter in hydrated C1 and CM‐like clasts and a dehydrated clast within a polymict eucrite and a howardite

Meteoritics &Planetary Science, EarlyView.
Abstract Volatile‐rich xenolithic clasts in different types of brecciated meteorites represent unique pristine solar system material. This study investigates the maturity and thermal history of organic matter using Raman spectroscopy and aqueous alteration effects using infrared spectroscopy in the matrix of 15 volatile‐rich clasts (C1 and CM‐like ...
Swarna Prava Das, Alessandro Maturilli, Aurélie Van den Neucker, Markus Patzek, Dipak Kumar Panda, Gopal K. Pradhan, Guneshwar Thangjam, Surya Snata Rout   +7 more
wiley   +1 more source

Using Zircon Morphology to Understand Metasomatic Fluid Alteration During the Big Sky Orogeny [PDF]

, 2017
Metasomatism is a metamorphic process that changes the bulk composition and morphology of a lithology. By understanding the differences between the protolith and altered rock, specifics about the composition of the fluid and its effects on the host rock ...
Curtis, Kelly
core   +3 more sources