Textural indicators of mineralisation potential in porphyry magmatic systems – A framework from the archetypal Yerington district, Nevada
dc.contributor.author | Carter, LC | |
dc.contributor.author | Williamson, BJ | |
dc.date.accessioned | 2022-03-08T11:47:33Z | |
dc.date.issued | 2022-02-17 | |
dc.date.updated | 2022-03-08T11:16:33Z | |
dc.description.abstract | Porphyry-type deposits are spatially and temporally associated with the relatively shallow and texturally complex parts of magmatic systems. Whilst certain textures offer snapshots into the physical processes which result in fluid exsolution and hydrothermal mineralisation, their documentation and interpretation remains disjointed. To address this, we describe a suite of magmatic and magmatic-hydrothermal textures from the classic Yerington Cu(-Mo-Au) porphyry district, Nevada, where Cenozoic extension and tilting has exposed a unique, ∼8 km palaeodepth, cross-section through the magmatic system. Within the granite cupolas that underlie the Ann Mason and Yerington porphyry deposits, these textures include pegmatitic pods and massive silica bodies. Emplaced through the cupolas, and genetically associated with ore formation, are aplite dykes that host mineralised unidirectional solidification textures (USTs), pegmatitic segregations, miarolitic cavities and early A-type quartz veins. Based on field relations, including associations with hypogene mineralisation, petrography and Ti-in-quartz crystallisation temperatures, we highlight how these textures may record the timing and location of the magmatic-hydrothermal transition and ore-formation. By doing so we provide a textural framework for exploration geologists to assess the likely 3D spatial and temporal architecture of porphyry mineralisation at the district-prospect scale before employing more invasive and expensive techniques. | en_GB |
dc.description.sponsorship | Natural Environment Research Council (NERC) | en_GB |
dc.description.sponsorship | Natural History Museum, London | en_GB |
dc.description.sponsorship | British Geological Survey | en_GB |
dc.description.sponsorship | Hugh McKinstry Fund, SEG (Society of Economic Geologists) | en_GB |
dc.format.extent | 104783- | |
dc.identifier.citation | Vol. 143, article 104783 | en_GB |
dc.identifier.doi | https://doi.org/10.1016/j.oregeorev.2022.104783 | |
dc.identifier.grantnumber | NE/L002434/1 | en_GB |
dc.identifier.grantnumber | NE/P017452/1 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/128954 | |
dc.language.iso | en | en_GB |
dc.publisher | Elsevier | en_GB |
dc.rights | © 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/) | en_GB |
dc.subject | Porphyry deposits | en_GB |
dc.subject | Magmatic-hydrothermal transition | en_GB |
dc.subject | Fluid exsolution | en_GB |
dc.subject | Miarolitic cavities | en_GB |
dc.subject | USTs | en_GB |
dc.subject | Undercooling | en_GB |
dc.title | Textural indicators of mineralisation potential in porphyry magmatic systems – A framework from the archetypal Yerington district, Nevada | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2022-03-08T11:47:33Z | |
dc.identifier.issn | 0169-1368 | |
exeter.article-number | 104783 | |
dc.description | This is the final version. Available on open access from Elsevier via the DOI in this record | en_GB |
dc.description | Data availability: All data is available within the manuscript and its Supplementary Data files. | en_GB |
dc.identifier.journal | Ore Geology Reviews | en_GB |
dc.relation.ispartof | Ore Geology Reviews, 143 | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_GB |
dcterms.dateAccepted | 2022-02-15 | |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2022-02-17 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2022-03-08T11:40:17Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2022-03-08T11:48:02Z | |
refterms.panel | B | en_GB |
Files in this item
This item appears in the following Collection(s)
Except where otherwise noted, this item's licence is described as © 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)