Patterns in the Copper Isotope Composition of Minerals in Porphyry Copper Deposits in Southwestern United States

2010 ◽  
Vol 105 (8) ◽  
pp. 1457-1467 ◽  
Author(s):  
R. Mathur ◽  
M. Dendas ◽  
S. Titley ◽  
A. Phillips
Keyword(s):  
United States ◽  
Isotope Composition ◽  
Porphyry Copper ◽  
Porphyry Copper Deposits ◽  
Southwestern United States ◽  
Copper Isotope ◽  
Copper Deposits ◽  
Composition Of Minerals

scholarly journals Porphyry Copper Potential of the United States Southern Basin and Range Using ASTER Data Integrated with Geochemical and Geologic Datasets to Assess Potential Near-Surface Deposits in Well-Explored Permissive Tracts

2019 ◽  
Vol 114 (6) ◽  
pp. 1095-1121
Author(s):  
John C. Mars ◽  
Gilpin R. Robinson ◽  
Jane M. Hammarstrom ◽  
Lukas Zürcher ◽  
Helen Whitney ◽  
...  
Keyword(s):  
United States ◽  
Expert Opinion ◽  
Porphyry Copper ◽  
Basin And Range ◽  
Porphyry Copper Deposits ◽  
Basin And Range Province ◽  
Copper Deposits ◽  
Southern Basin ◽  
Aster Data ◽  
Undiscovered Deposits

Abstract ArcGIS was used to spatially assess and rank potential porphyry copper deposits using Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data together with geochemical and geologic datasets in order to estimate undiscovered deposits in the southern Basin and Range Province in the southwestern United States. The assessment was done using a traditional expert opinion three-part method and a prospectivity model developed using weights of evidence and logistic regression techniques to determine if ASTER data integrated with other geologic datasets can be used to find additional areas of prospectivity in well-explored permissive tracts. ASTER hydrothermal alteration data were expressed as 457 alteration polygons defined from a low-pass filtered alteration density map of combined argillic, phyllic, and propylitic rock units. Sediment stream samples were plotted as map grid data and used as spatial information in ASTER polygons. Gravity and magnetic data were also used to define basins greater than 1 km in depth. Each ASTER alteration polygon was ranked for porphyry copper potential using alteration types, spatial amounts of alteration, stream sediment geochemistry, lithology, polygon shape, proximity to other alteration polygons, and deposit and prospects data. Permissive tracts defined for the assessment in the southern Basin and Range Province include the Laramide Northwest, Laramide Southeast, Jurassic, and Tertiary tracts. Expert opinion estimates using the three-part assessment method resulted in a mean estimate of 17 undiscovered porphyry copper deposits, whereas the prospectivity modeling predicted a mean estimate of nine undiscovered deposits. In the well-explored Laramide Southeast tract, which contains the most deposits and has been explored for over 100 years, an average of 4.3 undiscovered deposits was estimated using ASTER alteration polygon data versus 2.8 undiscovered deposits without ASTER data. The Tertiary tract, which contains the largest number of ASTER alteration polygons not associated with known Tertiary deposits, was predicted to contain the most undiscovered resources in the southern Basin and Range Province.

A comparative copper isotope study of porphyry copper deposits in Iran

2010 ◽  
Vol 10 (4) ◽  
pp. 413-418 ◽  
Author(s):  
H. Mirnejad ◽  
R. Mathur ◽  
M. Einali ◽  
M. Dendas ◽  
S. Alirezaei
Keyword(s):  
Porphyry Copper ◽  
Porphyry Copper Deposits ◽  
Copper Isotope ◽  
Copper Deposits ◽  
Isotope Study

COMPARISON OF REE SIGNATURES OF PRE- AND SYN-MINERALIZATION PLUTONS ASSOCIATED WITH PORPHYRY COPPER DEPOSITS OF NW MEXICO

2018 ◽  
Author(s):  
C. Santillana Villa ◽  
◽  
M. Valencia Moreno ◽  
L. Ochoa Landín ◽  
R. Del Rio Salas ◽  
...  
Keyword(s):  
Porphyry Copper ◽  
Porphyry Copper Deposits ◽  
Copper Deposits ◽  
Nw Mexico
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