dc.contributor.author |
Caldera, Norbert |
dc.contributor.author |
Teixell Cácharo, Antonio |
dc.contributor.author |
Griera Artigas, Albert |
dc.contributor.author |
Labaume, Pierre |
dc.contributor.author |
Lahfid, Abdeltif |
dc.date |
2021 |
dc.identifier |
https://ddd.uab.cat/record/235553 |
dc.identifier |
urn:10.1111/ter.12517 |
dc.identifier |
urn:oai:ddd.uab.cat:235553 |
dc.identifier |
urn:oai:egreta.uab.cat:publications/d07343f7-86ee-4b9a-bbda-72e0531b3d81 |
dc.identifier |
urn:scopus_id:85099107569 |
dc.format |
application/pdf |
dc.language |
eng |
dc.publisher |
|
dc.relation |
Ministerio de Economía y Competitividad CGL2014-54180-P |
dc.relation |
Ministerio de Ciencia e Innovación PGC2018-093903-B-C21 |
dc.relation |
Terra Nova ; Published onlince 2021 |
dc.rights |
open access |
dc.rights |
Tots els drets reservats. |
dc.rights |
https://rightsstatements.org/vocab/InC/1.0/ |
dc.subject |
Pyrenean orogeny |
dc.subject |
Recumbent fold nappe |
dc.subject |
RSCM paleothermometry |
dc.subject |
Hinterland tectonics |
dc.subject |
Ductile deformation |
dc.title |
Recumbent folding in the Upper Cretaceous Eaux-Chaudes massif : a Helvetic-type nappe in the Pyrenees? |
dc.type |
Article |
dc.description.abstract |
We describe a singular structure in Upper Cretaceous rocks of the Eaux-Chaudes massif of the western Pyrenees, consisting of a kilometre-scale fold nappe with a sheared overturned limb. High ductile strain attests a deformation style rarely reported for the alpine Pyrenees, and peak temperature in Upper Cretaceous carbonates is estimated by Raman spectroscopy of carbonaceous material palaeothermometry in the lower greenschist facies (>300°C). The normal fold limb retains the original sedimentary textures, while the overturned limb shows calcite crystal-plastic deformation and dynamic recrystallization, with crystallographic preferred orientation. The observed ductility and metamorphic temperature bear similarities with the lower Helvetic nappes of the Alps, suggesting deep burial and/or possibly high geothermal gradient in this part of the Pyrenees. |