| dc.creator |
Arche, A. |
|
| dc.creator |
Díez, J.B. |
|
| dc.creator |
López-Gómez, José |
|
| dc.date |
2008-07-01T09:53:20Z |
|
| dc.date |
2008-07-01T09:53:20Z |
|
| dc.date |
2007 |
|
| dc.date.accessioned |
2017-01-31T02:16:27Z |
|
| dc.date.available |
2017-01-31T02:16:27Z |
|
| dc.identifier |
Journal of Iberian Geology 33 (1) 2007: 125-133 |
|
| dc.identifier |
1886-7995 |
|
| dc.identifier |
http://hdl.handle.net/10261/5488 |
|
| dc.identifier.uri |
http://dspace.mediu.edu.my:8181/xmlui/handle/10261/5488 |
|
| dc.description |
[EN] The Early Permian (Autunian) has not been identifi ed up to now in the subsurface of the Tertiary Ebro Basin because of the
scarcity of oil well boreholes reaching the Variscan basement and the systematic attribution of a Carboniferous age, without any
paleontological data, to the unmetamorfosed siliciclastic sediments found at the base of some of them, clearly above the Early Paleozoic
basement. Grey and black shale samples recovered from cores preserved in the REPSOL-YPF archives of the Caspe-1 oil
well between meters 1.437 and 1.449 have yielded palynological assemblages dominated by Vittatina costabilis, Potonieisporites
novicus, Potonieisporites sp., and other poorly preserved elements. This association has an Early Permian (Autunian) age and
closely resembles other fi ndings in the Iberian Ranges, the Pyrenees and the southern margin of the Iberian Massif, shading new
light on the early stages of the extensional events taking place in central and NE parts of the Iberian Microplate just after the main
compressive phases of the Variscan orogeny. |
|
| dc.description |
[ES] El Pérmico Inferior (Autuniense) no había sido identifi cado hasta ahora en el subsuelo de la Cuenca Terciaria del Ebro dada la
escasez de pozos de petróleo que alcanzasen el basamento varisco de la zona y la sistemática atribución de una edad Carbonífero, sin
dato paleontológico alguno, a los sedimentos siliciclásticos no metamórfi cos encontrados en la base de algunos de ellos, claramente
sobre el basamento del Paleozoico Inferior. Se recuperaron muestras de lutitas grises y negras de testigos conservados en los archivos
de REPSOL-YPF del sondeo Caspe-1, entre los metros 1.437 y 1.449, que han proporcionado una asociación de palinomorfos
compuesta por Vittatina costabilis, Potonieisporites novicus, Potonieisporites sp., y otros elementos peor conservados. Esta asociación
tiene una edad Pérmico Inferior (Autuniense) y tiene gran similitud con otras descritas en la Cordillera Ibérica, los Pirineos
y el borde S del Macizo Ibérico, arrojando nueva luz sobre los primeros eventos extensivos que tuvieron lugar en el centro y NE de
la Microplaca Ibérica inmediatamente después de las principales fases de compresión de la orogenia Varisca. |
|
| dc.description |
The authors thank REPSOL-YPF and specially its geologist
Juan García Mallo for permission to sample the
cores of the Caspe-1 oil well preserved in their archives.
We also thank Carlos Sánchez and Modesto Escudero for
their help with the line drawings. This is a contribution
to Project BTE 2002-00755 and CGL2005-01520BTE of
the Spanish Ministry of Education and Science.i |
|
| dc.description |
Peer reviewed |
|
| dc.format |
694478 bytes |
|
| dc.format |
application/pdf |
|
| dc.language |
eng |
|
| dc.publisher |
Universidad Complutense de Madrid |
|
| dc.rights |
openAccess |
|
| dc.subject |
Permian |
|
| dc.subject |
Autunian |
|
| dc.subject |
Ebro Basin |
|
| dc.subject |
Palynology |
|
| dc.subject |
Carboniferous |
|
| dc.subject |
Pérmico |
|
| dc.subject |
Autuniense |
|
| dc.subject |
Cuenca del Ebro |
|
| dc.subject |
Palinología |
|
| dc.subject |
Carbonífero |
|
| dc.title |
Identification of the Early Permian (Autunian) in the subsurface of the Ebro Basin, NE Spain, and its paleogeographic consequences |
|
| dc.title |
Identificación del Pérmico Inferior (Autuniense) en el subsuelo de la Cuenca del Ebro, NE de España, y sus consecuencias paleogeográficas |
|
| dc.type |
Artículo |
|