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The paleocaves of Pierre-Saint-Martin/Larra massif (France/Spain). Mapping and diagnostic
| hal.structure.identifier | Travaux et recherches archéologiques sur les cultures, les espaces et les sociétés [TRACES] | |
| hal.structure.identifier | Department of Anthropology and Archaeology | |
| dc.contributor.author | LANS, Benjamin | |
| hal.structure.identifier | Passages | |
| dc.contributor.author | MAIRE, Richard | |
| hal.structure.identifier | Service de Géologie Fondamentale et Appliquée | |
| dc.contributor.author | QUINIF, Yves | |
| hal.structure.identifier | ARSIP [ARSIP] | |
| dc.contributor.author | DOUAT, Michel | |
| dc.date.issued | 2022 | |
| dc.date.conference | 2022-07-24 | |
| dc.identifier.isbn | 978 - 2 - 7417 - 0694 - 6 | |
| dc.description.abstractEn | The Pyrenean Pierre-Saint-Martin/Larra massif presents more than 465 km of surveyed caves. But at the surface of this wellknown karstic mountain area, we can observe "cemeteries" of unroofed and open-air palaeocaves, due to the erosion/dissolution of cretaceous limestones since the Mio-Pliocene. An accurate mapping of these palaeocaves is actually done by remote sensing, in addition to essential field work. Indeed, walls and ground of palaeocaves have not the same micro-topographic characteristics (e.g. roughness) than the surrounding limestone. Those small differences are detected and quantified on the very high-density LIDAR full cover. Moreover, palaeo-speleothems can be detected and localized by the mean of spectral indices analysis, on very high resolution orthophotography and satellite imagery. Some palaeo-galleries have a development of several hundred meters, and show ancient stalagmitic massifs. The first U/Th dating indicate ages older than 400 000 years. An illustration is given by the Lepineux pit, which is extended at the surface by unroofed palaeo-pits, presenting old concretions. Those palaeo-speleothems situated at the surface indicate a pre-ice age, when the entire massif was at a lower elevation, with a forest and a pedologic cover, very favourable to the concretion formation. | |
| dc.language.iso | en | |
| dc.rights.uri | http://hal.archives-ouvertes.fr/licences/etalab/ | |
| dc.source.title | Proceeding of the 18th UIS Congress - Volume IV - Karstologia Mémoires n°24 | |
| dc.title.en | The paleocaves of Pierre-Saint-Martin/Larra massif (France/Spain). Mapping and diagnostic | |
| dc.type | Communication dans un congrès | |
| dc.subject.hal | Planète et Univers [physics]/Sciences de la Terre/Géomorphologie | |
| dc.subject.hal | Planète et Univers [physics]/Sciences de la Terre/Hydrologie | |
| bordeaux.page | 170 | |
| bordeaux.volume | 4 | |
| bordeaux.conference.title | 18th International Congress of Speleology - Savoie Mont Blanc 2022 | |
| bordeaux.country | FR | |
| bordeaux.title.proceeding | Proceeding of the 18th UIS Congress - Volume IV - Karstologia Mémoires n°24 | |
| bordeaux.conference.city | Le Bourget-du-Lac | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-04040539 | |
| hal.version | 1 | |
| hal.invited | oui | |
| hal.proceedings | oui | |
| hal.conference.end | 2022-07-31 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-04040539v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=Proceeding%20of%20the%2018th%20UIS%20Congress%20-%20Volume%20IV%20-%20Karstologia%20M%C3%A9moires%20n%C2%B024&rft.date=2022&rft.volume=4&rft.spage=170&rft.epage=170&rft.au=LANS,%20Benjamin&MAIRE,%20Richard&QUINIF,%20Yves&DOUAT,%20Michel&rft.isbn=978%20-%202%20-%207417%20-%200694%20-%206&rft.genre=unknown |
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