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dc.contributor.author
Spacapan, Juan Bautista  
dc.contributor.author
Galland, Olivier  
dc.contributor.author
Leanza, Hector Armando  
dc.contributor.author
Planke, Sverre  
dc.date.available
2018-06-05T18:43:35Z  
dc.date.issued
2016-12  
dc.identifier.citation
Spacapan, Juan Bautista; Galland, Olivier; Leanza, Hector Armando; Planke, Sverre; Igneous sill and finger emplacement mechanism in shale-dominated formations: a field study at Cuesta del Chihuido, Neuquén Basin, Argentina; Geological Society of London; Journal of the Geological Society; 174; 3; 12-2016; 422-433  
dc.identifier.issn
0016-7649  
dc.identifier.uri
http://hdl.handle.net/11336/47361  
dc.description.abstract
Seismic reflection data and field observations have revealed the presence of voluminous igneous sill complexes emplaced into organic-rich shale formations in sedimentary basins worldwide. Damage and structures associated with sills have major implications for fluid flow through basins. Constraining the distribution of these structures requires a good understanding of the sill emplacement mechanism. However, most mechanical models of sill emplacement assume elastic host behaviour, whereas shale is expected to deform inelastically. This contradiction calls for new field observations to better constrain sill emplacement mechanisms. In this paper, we report on detailed field observations of spectacularly exposed fingers and a sill emplaced in shale at Cuesta del Chihuido, in the Neuquén Basin, Argentina. Exceptional outcrop conditions allow detailed descriptions of both (1) the entire cross-section of the intrusions, and (2) the deformation structures accommodating intrusion propagation in the host rock. All intrusions exhibit irregular, blunt or rectangular tips. The structures accommodating the tip propagation are systematically compressional, including reverse faults, folding and imbricate thrust system. Our observations suggest that the studied intrusions have propagated by pushing the host rock ahead, as a viscous indenter. Our observations suggest that the viscous indenter model is probably a dominant mechanism of sill emplacement in shale.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Geological Society of London  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Argentina  
dc.subject
Neuquén Basin  
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Cuesta del Chihuido  
dc.subject.classification
Meteorología y Ciencias Atmosféricas  
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Ciencias de la Tierra y relacionadas con el Medio Ambiente  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Igneous sill and finger emplacement mechanism in shale-dominated formations: a field study at Cuesta del Chihuido, Neuquén Basin, Argentina  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-05-30T17:18:41Z  
dc.identifier.eissn
2041-479X  
dc.journal.volume
174  
dc.journal.number
3  
dc.journal.pagination
422-433  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Spacapan, Juan Bautista. Universidad Nacional de La Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación YPF; Argentina  
dc.description.fil
Fil: Galland, Olivier. University of Oslo; Noruega  
dc.description.fil
Fil: Leanza, Hector Armando. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina  
dc.description.fil
Fil: Planke, Sverre. University of Oslo; Noruega. Volcanic Basin Petroleum Research; Noruega  
dc.journal.title
Journal of the Geological Society  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://doi.org/10.1144/jgs2016-056  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://jgs.lyellcollection.org/content/174/3/422  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/jgs/article/174/3/422/317683/igneous-sill-and-finger-emplacement-mechanism-in