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http://hdl.handle.net/10261/191976
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dc.contributor.author | Chen, C. | - |
dc.contributor.author | Watremez, Louise | - |
dc.contributor.author | Prada, Manel | - |
dc.contributor.author | Minshull, Timothy A. | - |
dc.contributor.author | Edwards, R.A. | - |
dc.contributor.author | O'Reilly, Brian M. | - |
dc.contributor.author | Reston, Timothy | - |
dc.contributor.author | Wagner, G. | - |
dc.contributor.author | Gaw, V. | - |
dc.contributor.author | Klaeschen, Dirk | - |
dc.contributor.author | Shannon, Patrick | - |
dc.date.accessioned | 2019-10-01T11:00:36Z | - |
dc.date.available | 2019-10-01T11:00:36Z | - |
dc.date.issued | 2018-10 | - |
dc.identifier | e-issn: 2169-9356 | - |
dc.identifier.citation | Journal of Geophysical Research. Solid Earth 123(10): 8312-8330 (2018) | - |
dc.identifier.uri | http://hdl.handle.net/10261/191976 | - |
dc.description | 19 pages, 11 figures, 2 tables.-- The wide‐angle seismic data used in this study can be accessed via www.pangaea.de | - |
dc.description.abstract | The deep structure and sedimentary record of rift basins provide an important insight into understanding the geological processes involved in lithospheric extension. We investigate the crustal structure and large‐scale sedimentary architecture of the southern Porcupine Basin, offshore Ireland along three wide‐angle seismic profiles, supplemented by 13 selected seismic reflection profiles. The seismic velocity and crustal geometry models obtained by joint refraction and reflection traveltime inversion clearly image the deep structure of the basin. Our results suggest the presence of three distinct crustal domains along the rifting axis: (a) continental crust becoming progressively hyperextended from north to south through the basin, (b) a transitional zone of uncertain nature, and (c) a 7‐ to 8‐km‐thick zone of oceanic crust. The latter is overlain by an ~8‐km compacted Upper Paleozoic‐Mesozoic succession and ~ 2 km of Cenozoic strata. Due to the lack of clear magnetic anomalies and in the absence of well control, the precise age of interpreted oceanic crust is unknown. However, we can determine an age range of Late Jurassic to Late Cretaceous from the regional context. We propose a northward propagating rifting process in the Porcupine Basin, resulting in variations in strain along the rift axis | - |
dc.description.sponsorship | This research was partially funded by the Irish Shelf Petroleum Studies Group (ISPSG) of Irish Petroleum Infrastructure Programme Group 4. The ISPSG comprises the following: Atlantic Petroleum (Ireland) Ltd, Cairn Energy Plc, Chrysaor E&P Ireland Ltd, Chevron North Sea Limited, ENI Ireland BV, Europa Oil & Gas (Holdings) plc, ExxonMobil E&P Ireland (Offshore) Ltd., Kosmos Energy LLC, Maersk Oil North Sea UK Ltd, Petroleum Affairs Division of the Department of Communications, Climate Action and Environment, Providence Resources plc, Repsol Exploración SA, San Leon Energy Plc, Serica Energy Plc, Shell E&P Ireland Ltd, Sosina Exploration Ltd, Statoil (UK) Ltd, Tullow Oil Plc, and Woodside Energy (Ireland) Pty Ltd. Gravity, magnetic, and seismic data were provided by the Petroleum Affairs Division of the Department of Communications, Climate Action and Environment, Ireland. Seismic reflection data along SPB97 profiles were supplied by Fugro‐Geoteam through Conoco‐Phillips. PAD and SPBI98 profiles were provided by the Department of Communications, Climate Action and Environment (Ireland). GMT (Wessel & Smith, 1998) was used to prepare all the figures, combined with Seismic‐Unix (Stockwell, 1999) for some. T. A. M. was supported by a Wolfson Research Merit award | - |
dc.publisher | American Geophysical Union | - |
dc.relation.isversionof | Publisher's version | - |
dc.rights | openAccess | - |
dc.title | From Continental Hyperextension to Seafloor Spreading: New Insights on the Porcupine Basin From Wide‐Angle Seismic Data | - |
dc.type | artículo | - |
dc.identifier.doi | 10.1029/2018JB016375 | - |
dc.relation.publisherversion | https://doi.org/10.1029/2018JB016375 | - |
dc.date.updated | 2019-10-01T11:00:36Z | - |
dc.description.version | Peer Reviewed | - |
dc.language.rfc3066 | eng | - |
dc.rights.license | https://publications.agu.org/author-resource-center/usage-permissions/ | - |
dc.relation.csic | No | - |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.openairetype | artículo | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
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