Modeling the formation of porphyry-copper ores
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Abstract
Porphyry-copper ore systems, the source of much of the world's copper and molybdenum, form when metal-bearing fluids are expelled from shallow, degassing magmas. On page 1613 of this issue, Weis et al. (1) demonstrate that self-organizing processes focus metal deposition. Specifically, their simulation studies indicate that ores develop as consequences of dynamic variations in rock permeability driven by injection of volatile species from rising magmas. Scenarios with a static permeability structure could not reproduce key field observations, whereas dynamic permeability responses to magmatic-fluid injection localized a metal-precipitation front where enrichment by a factor of 103 could be achieved [for an overview of their numerical-simulation model CSMP++, see (2)].
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Modeling the formation of porphyry-copper ores |
| Series title | Science |
| DOI | 10.1126/science.1231706 |
| Volume | 338 |
| Issue | 6114 |
| Year Published | 2012 |
| Language | English |
| Publisher | AAAS |
| Contributing office(s) | Branch of Regional Research-Western Region, Volcano Hazards Program |
| Description | 2 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Science |
| First page | 1551 |
| Last page | 1552 |
| Google Analytic Metrics | Metrics page |