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dc.date.accessioned | 2021-10-12T15:23:08Z | |
dc.date.available | 2021-10-12T15:23:08Z | |
dc.date.issued | 2016 | |
dc.identifier.uri | http://sedici.unlp.edu.ar/handle/10915/126468 | |
dc.description.abstract | The Auca Mahuida volcano (2.03–0.88 Ma) located east of the Andean thrust front in the; Neuqu´en basin (Argentina) hosts an oil system of thermogenic origin and is affected by the; NW–SE striking-faults. Intrusive bodies and the underlying Jurassic sediments constitute the; reservoir rocks. Aeromagnetic data collected in the Auca Mahuida area detected multiple; dipolar magnetic anomalies, many of which have reverse polarity. Palaeomagnetic measurements; on rock samples collected in the field together with available age determinations indicate; that the reversely magnetized sources were mainly emplaced during the Matuyama reverse; polarity chron while the normal polarity sources were emplaced during the Olduvai and/or; Jaramillo subchrons. The location and geometry of the intrusive bodies is poorly known and; the customary magnetic inversion is rendered difficult because of multiple natural remanent; magnetization directions. To address these difficulties, a voxel inversion was applied to model; the vector residual magnetic intensity (VRMI) transformation of the observed total magnetic; intensity data. The modelling showed a 1.5 km deep, subcircular ring-shaped intrusion below; the summit of the volcano and a series of NW–SE elongated, fault-controlled intrusive bodies; to depths up to 3–4 km. Our results show that magnetic data and VRMI modelling help resolve; the geometry of the shallow plumbing system of volcanoes with remanently magnetized; sources, and estimate the depth and geometry of potential oil reservoirs in volcanic areas. | en |
dc.format.extent | 852-867 | es |
dc.language | en | es |
dc.subject | Magnetic anomaly: modelling and interpretation | es |
dc.subject | Inverse theory | es |
dc.subject | Gas and hydrate systems | es |
dc.subject | Backarc basin processes | es |
dc.subject | Physics of magma and magma bodies | es |
dc.subject | South America | es |
dc.title | Inverse modelling of the reversely magnetized, shallow plumbing system hosting oil reservoirs of the Auca Mahuida volcano (Payeina retroarc, Neuquén Basin, Argentina) | en |
dc.type | Articulo | es |
sedici.identifier.other | doi:10.1093/gji/ggv487 | es |
sedici.identifier.issn | 0956-540X | es |
sedici.identifier.issn | 1365-246X | es |
sedici.creator.person | Paine, John | es |
sedici.creator.person | De Ritis, Riccardo | es |
sedici.creator.person | Ventura, Guido | es |
sedici.creator.person | Longo, Laura Mariana | es |
sedici.creator.person | Ravat, Dhananjay | es |
sedici.creator.person | Speranza, Fabio | es |
sedici.creator.person | Chiappini, Massimo | es |
sedici.subject.materias | Geología | es |
sedici.subject.materias | Física | es |
sedici.description.fulltext | true | es |
mods.originInfo.place | Facultad de Ciencias Astronómicas y Geofísicas | es |
sedici.subtype | Articulo | es |
sedici.rights.license | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
sedici.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
sedici.description.peerReview | peer-review | es |
sedici.relation.journalTitle | Geophysical Journal International | es |
sedici.relation.journalVolumeAndIssue | vol. 204, no. 2 | es |