Results 61 to 70 of about 9,688 (230)

Petrographic characterization and classification of alteration zones using a spreadsheet-based system in the Kingking Porphyry Cu-Au Deposit, Barangay Kingking, Pantukan, Davao de Oro [PDF]

E3S Web of Conferences
Porphyry copper-gold deposits (PCDs) are globally significant sources of copper, molybdenum, and gold, characterized by hydrothermal alteration zoning that constrains ore-forming processes and assists mineral exploration.
Adlawan Jeric Brylle A., Balighot Glydel Grace G., Cogal Kate Antonette R., Polo Dianne Dexy Jane S., Escarian Christian Paul F., Rejas Dean Lester P.   +5 more
doaj   +1 more source

Analysis and evaluation of fragment size distributions in rock blasting at the Erdenet Mine [PDF]

, 2015
Master's Project (M.S.) University of Alaska Fairbanks, 2015Rock blasting is one of the most important operations in mining. It significantly affects the subsequent comminution processes and, therefore, is critical to successful mining productions.
Dondov, Erdenebaatar, Дондов, Эрдэнэбаатар   +1 more
core  

Structure of the North‐Central Chile Subduction Zone From Local Earthquake Tomography

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract The fluid cycle in subduction zones prescribes large parts of its structure and seismogenic behavior. Background seismicity inside the downgoing slab is linked to fluid release from dehydration reactions, whereas fluid overpressure along the plate interface can alter interplate coupling, megathrust earthquakes, and the presence or absence of ...
Nicolás Hernández‐Soto, Christian Sippl, Matthew Miller, Dietrich Lange, Frederik Tilmann, Diego González‐Vidal, Juan Carlos Baez, Anne Socquet, Marcos Moreno   +8 more
wiley   +1 more source

Giant Porphyry Copper Deposits Caused by a Slab Jamming in the Mantle Transition Zone

Terra Nova, Volume 38, Issue 2, Page 106-115, April 2026.
ABSTRACT Two giant porphyry copper deposits in the Southern Central Andes formed during the Miocene–Pliocene transition when a bend in the subducting Juan de Fernández hotspot chain jammed in the mantle transition zone, causing mega‐scale slab‐kinking. This geometry implies mechanical resistance that caused East–West compression and eventually a thrust‐
Nipaporn Nakrong, Marnie Forster, Wim Spakman, Hielke Jelsma, Francois Gaboury, Gordon Lister   +5 more
wiley   +1 more source

The metallogenic evolution of the Greater Antilles [PDF]

, 2011
The Greater Antilles host some of the world's most important deposits of bauxite and lateritic nickel as well as significant resources of gold and silver, copper, zinc, manganese, cobalt and chromium.
Lewis, J.F., López-Kramer, J., Nelson, C.E., Proenza, J.A.   +3 more
core   +4 more sources

New Zealand's Second Meteorite: Makarewa (find, L4, S5, W2)

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
One of the most remarkable discoveries of a meteorite in New Zealand was that of Makarewa. Discovered in 1879, Makarewa is a ‘find’ that was uncovered a metre below the surface of a clay bank during excavation works for a train line in the southern South Island.
Mia R. E. Boothroyd, James M. Scott, Marshall C. Palmer, Rasmus Andreason   +3 more
wiley   +1 more source

Rapid Slab Rollback Drives Early Cretaceous Back‐Arc Extension in NE China: Implication for Crustal Growth and Episodic Porphyry Mineralization

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract The subduction of the Paleo‐Pacific Plate beneath the NE Asian continental margin induced extensive magmatism, providing an excellent opportunity to investigate the interplay between plate dynamics, arc magmatism, continental crust formation, and porphyry mineralization.
Honghui Wang, Xinghua Ma, Simon A. Wilde, Yong Lai, Zhenhua Zhou, Jinyu Yan   +5 more
wiley   +1 more source

Determination of Composition of Pyrite in the Baishantang Copper Deposit by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry and Electron Microprobe

Yankuang ceshi, 2016
Determination of trace elements in analyzed mineral phase by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS) is a new in situ technique for mineral phase analyses. As an important mineral in porphyry copper deposits, the major and
YAN Qiao-juan, WEI Xiao-yan, YE Mei-fang, ZHAO Hui-bo, ZHOU Ning-chao   +4 more
doaj   +1 more source

The Significance of Magnetic Fabrics Preserved in Hydrothermally Altered Rocks

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 3, March 2026.
Abstract Anisotropy of Magnetic Susceptibility (AMS) and Anisotropy of Magnetic Remanence (AMR) are critical petrofabric tools for investigating the evolution of volcano‐magmatic, tectonic, and surface process systems. These highly sensitive techniques can distinguish multiple magnetic fabrics within individual samples, crucial in assessing archives of
Ben Latimer, William McCarthy, Tobias Mattsson, John Reavy   +3 more
wiley   +1 more source

Characterization of fluid inclusions and sulfur isotopes in the Iju porphyry copper deposit, North West of Shahr-e-Babak

Journal of Economic Geology, 2017
Introduction The Iju porphyry copper deposit is located in the southern part of the Urumieh-Dokhtar magmatic arc (Dehaj-Sarduieh belt) within the Kerman copper belt (Dimitrijevic, 1973).
Malihe Golestani, Mohammad Hassan Karimpour, Azadeh Malekzadeh Shafaroudi , Mohammad Reza Haidarian Shahri   +3 more
doaj   +1 more source