Results 91 to 100 of about 8,388 (230)

Progress in Resource Evaluation Using a Handheld Raman Instrument Developed for Astronaut Missions

Journal of Raman Spectroscopy, Volume 56, Issue 11, Page 1418-1433, November 2025.
Analogue studies were undertaken using a prototype, handheld Raman spectrometer (developed for astronaut usage on the moon) to collect data that would indicate the presence of water and help develop the technology to search for valuable trace elements (such as lithium and caesium).
J. G. T. Armstrong, M. McHugh, J. Parnell, H. N. Lerman, A. Moral, I. B. Hutchinson   +5 more
wiley   +1 more source

Basement Domains Recorded in the Zircon Geochemistry of the Northern Sierra Nevada Batholith

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 11, November 2025.
Abstract The northern Sierra Nevada batholith was emplaced into and across a series of accreted crustal belts that vary considerably in their ages and lithologies. Unlike batholithic segments to the south, the northern Sierra comprises smaller, spatially distinct plutons where geologic relations with the host basement can be observed.
Joella Campbell, M. Robinson Cecil, Jade Star Lackey   +2 more
wiley   +1 more source

Geology, fluid inclusions, mineral and (S-O) isotope chemistry of the Badran orogenic Au deposit, Yana-Kolyma belt, eastern Siberia: implications for ore genesis

Frontiers in Earth Science
The Badran orogenic gold deposit is located in the Yana-Kolyma belt, Eastern Siberia; it has proven reserves of ∼9.3 t of gold and an average grade of 7.8 ppm. The total gold production at the Badran deposit since 1984 amounts to ∼34 t.
Valery Fridovsky, Sergey Kryazhev, Sergey Kryazhev, Lena Polufuntikova, Maxim Kudrin, Galina Anisimova   +5 more
doaj   +1 more source

Petrophysical Signatures and Mineral Endowment: The Piché Group, Augmitto–Bouzan Sector, Québec, Canada

Geophysical Prospecting, Volume 73, Issue 9, November 2025.
ABSTRACT Hydrothermal alteration plays a crucial role in the precipitation of gold and other metals, particularly within orogenic gold deposits hosted in mafic and ultramafic rocks. This alteration significantly modifies the rock matrix, leading to changes in its petrophysical properties.
Yasaman Nemati, J. Christian Dupuis, Bernard Giroux, Richard Smith, Rita Rodrigues, Bertrand Rottier, Georges Beaudoin   +6 more
wiley   +1 more source

Evolution of Mayflies (Ephemeroptera) Across the Palearctic Mountains: The Biogeographical Links Between the Caucasus and Adjacent Ranges, Central Asia and the Himalayas

Zoologica Scripta, Volume 54, Issue 6, Page 870-883, November 2025.
ABSTRACT The biodiversity of the highest Palearctic mountains is extraordinary, yet its evolution and biogeographic links from a global perspective remain poorly understood. This study focuses on the diversification and biogeography of mayflies (Ephemeroptera) distributed across several prominent mountain ranges, including the Caucasus and adjacent ...
Ľuboš Hrivniak, Pavel Sroka, Roman J. Godunko, Dmitry M. Palatov, Alexander V. Martynov, Jindřiška Bojková   +5 more
wiley   +1 more source

A review of the current state of knowledge on gold mineralization in Mali, Western Africa

Geology, Ecology, and Landscapes
This paper comprehensively analyses the geology and geochemistry of the relatively understudied gold resources in Mali. It also examines the potential of stable isotopes in enhancing gold prospecting within the Birimian terrane.
Sory I. M Konate, Anthony T. Bolarinwa, Raymond Webrah Kazapoe, Mamadou L. Bouare, Elhadji Mory Traore, George Lemewihbwen Ngiamte, N’Tcha Daniel Kouagou N’Dah   +6 more
doaj   +1 more source

Two-sided asymmetric subduction; implications for tectonomagmatic and metallogenic evolution of the Lut Block, Eastern Iran [PDF]

, 2011
West directed subduction zones show common characteristics, such as low structural elevation, deep trench, steep slab and a conjugate back-arc basin that are opposite to those of the east directed subduction zones.
Arjmandzadeh, R., Homam, S. M., Karimpour, M. H., Mazaheri, S. A., Medina, J. M., Santos, J. F.   +5 more
core   +2 more sources

Hydrogeochemical changes before and during the 2016 Amatrice-Norcia seismic sequence (central Italy) [PDF]

, 2017
Seismic precursors are an as yet unattained frontier in earthquake studies. With the aim of making a step towards this frontier, we present a hydrogeochemical dataset associated with the 2016 Amatrice- Norcia seismic sequence (central Apennines, Italy),
Barberio, Marino Domenico, Barbieri, Maurizio, Billi, Andrea, Doglioni, Carlo, Petitta, Marco   +4 more
core   +2 more sources

Lithosphere architecture characterized by crust-mantle decoupling controls the formation of orogenic gold deposits. [PDF]

Natl Sci Rev, 2023
Hou Z, Wang Q, Zhang H, Xu B, Yu N, Wang R, Groves DI, Zheng Y, Han S, Gao L, Yang L.   +10 more
europepmc   +1 more source

Tectonic overview of the West Gondwana margin [PDF]

, 2008
The oceanic southern margin of Gondwana, from southern South America through South Africa, West Antarctica, New Zealand (in its pre break-up position), and Victoria Land to Eastern Australia is one of the longest and longest-lived active continental ...
Pankhurst, Robert J., Vaughan, Alan P.M.
core   +1 more source