Results 21 to 30 of about 16,696 (213)
Frontiers in Earth Science, 2022 Weathered residual Kaolin deposits on the northern margin of the Qinzhou-Hangzhou Suture Zone are characterized by more feldspar-containing minerals and fewer dark minerals.
Chunhai Li +8 more
doaj +1 more source
Determination of oxygen fugacity from ore-bearing magma responsible for Gazu copper mineralization: Cerium data in zircon mineral [PDF]
پترولوژی, 2021 Porphyry Cu deposits are typically oxidized. Oxygen fugacity (fO2) is a key factor, which controls the formation of porphyry Cu deposits. Trace element compositions of Cretaceous magmatic zircon grains (65.9-65.1 Ma) were determined from ore-bearing ...
Alireza Almasi +2 more
doaj +1 more source
, 2014 This research was funded through Natural Environment Research Council (grant NE/J021822/1) and the APC was paid through the RCUK OA block grant.Earth's middle age, extending from 1.7 to 0.75 Ga, was characterized by environmental, evolutionary, and ...
Cawood, Peter Anthony +1 more
core +1 more source
Frontiers in Earth ScienceDetermining spatial parameters related to mineral deposits is crucial for analysing mineral prospectivity. These spatial parameters, called Geospatial Criteria (GC), can serve as input data for modelling mineral prospectivity.
Zahid Shah +6 more
doaj +1 more source
Anomalous supply of bioessential molybdenum in mid-Proterozoic surface environments [PDF]
, 2016 We are grateful to A. Sandison and W. Thayalon for skilled technical support, and Mike Porter and an anonymous reviewer, who helped to clarify the manuscript.Peer ...
Lindgren, Paula, Parnell, John
core +1 more source
Yankuang ceshi, 2016 The phyllic alteration zone is regarded as one of the most important near-surface markers in mineral exploration of porphyry deposits. The Gongpoquan and Baishantang copper deposits are two typical porphyry deposits in the Beishan metallogenic belt.
YE Mei-fang +9 more
doaj +1 more source
Supergiant porphyry copper deposits are failed large eruptions
Communications Earth & Environment, 2022 Monte Carlo-based mass balance simulations suggest that the formation of porphyry copper deposits requires fast accumulation of large magma volumes, which are also capable of destroying those deposits if magmas erupt.
Massimo Chiaradia, Luca Caricchi
doaj +1 more source
Dwarf Copper-Gold Porphyry Deposits of the Buchim-Damjan-Borov Dol Ore District, Republic of Macedonia (FYROM) [PDF]
, 2010 The metallogenic aspects, tectonic setting, magmatism, structure, and composition of Au-and Ag-bearing porphyry copper deposits in the Buchim-Damjan-Borov Dol ore district and their genetic features are considered and compared with earlier published data.
T. Serafimovski +27 more
core +4 more sources
Oxidized sulfur-rich arc magmas formed porphyry Cu deposits by 1.88 Ga
Nature Communications, 2021 Tectonomagmatic conditions in the Precambrian were hypothesized to be unfavorable for porphyry Cu deposit formation. Here, the authors show that metallogenic processes typify Phanerozoic porphyry Cu deposits operated by ~1.88 Ga, reflecting modification ...
Xuyang Meng +10 more
doaj +1 more source
Porphyry deposits and oxidized magmas
Ore Geology Reviews, 2015 Abstract Porphyry deposits supply most of the world's Cu and Mo resources. Over 90% of the porphyry deposits are found at convergent margins, especially above active subduction zones, with much fewer occurrences at post-collisional or other tectonic settings.
Weidong Sun +10 more
openaire +1 more source