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    The objective of the national portal (French national cyber-core repository) is to group in a single place metadatas associated with field rapport and the marine, continental sedimentary cores stored and studied in the French laboratories. Cores contained in this portal are stemming from inventories of the numerous partners laboratories of the CNRS, IFREMER, MNHN, IRD, INRA. All Samples are assigne Every sample have a unique number ID IGSN (http://www.geosamples.org/) L'objectif du portail national est de regrouper en un seul lieu les métadonnées associées aux missions et carottes sédimentaires marines, continentales et glaciaires stockées et étudiées dans les laboratoires Français. Les carottes contenues dans ce portail sont issues des inventaires des nombreux laboratoires partenaires du CNRS, IFREMER, MNHN, IRD, INRA. The objective of the national portal is to gather in one place the metadata associated with the marine, continental and glacial sedimentary missions and cores stored and studied in the French laboratories. The cores contained in this portal come from the inventories of the many CNRS partner laboratories, IFREMER, MNHN, IRD, INRA. L’alimentation de la base est ouverte aux unités française de recherche qui le souhaitent. The base is open to French research units who wish to do so. Cette initiative a bénéficié de différents soutiens depuis 2014 : du C2FN pour son initiation dans le cadre de l'Equipex CLIMCOR (http://climcor-equipex.dt.insu.cnrs.fr/), de la DT INSU, l'OASU pour leurs soutiens techniques. Cette initiative a ete piloté par les "core repository" EPOC et EDYTEM pour la communauté Marine et continentale. Ce projet a benefcié également du rapprochement avec IFREMER et d’un effort spécifique mené dans le cadre d'actions autour des « archives sédimentaires » et du "Rétro observatoiRe des archives sédimentaires des Zones Ateliers" du LTER France (Réseau Zones Ateliers du CNRS http://www.za-inee.org/). Les métadonnées de forages du système ROZA est alimenté par la Cyber-carothèque via moissonnage de webservice. This initiative has benefited from various support since 2014: the C2FN for its initiation in the framework of Equipex CLIMCOR (http://climcor-equipex.dt.insu.cnrs.fr/), the DT INSU, the OASU for their technical support. This initiative was piloted by EPOC and EDYTEM core repositories for the marine and continental communities. This project also benefited from the rapprochement with IFREMER and from a specific effort carried out in the framework of actions around the "sedimentary archives" and the "Retro observatory of the sedimentary archives ROZA" of the LTER France (Network Zones Ateliers of the CNRS http : //www.za-inee.org/). The drilling metadata of the ROZA system is powered by the Cyber-carothèque via webservice harvesting.

  • Profil-A de la plage du Sillon de Talbert - projet TALBERT-SURVEY (https://www-iuem.univ-brest.fr/pops/projects/talbert-survey)

  • Core THU10-I-01a1 is the first run/section (0-127cm) of the THU10-I sequences Localisation : Lake La Thuile, in the Northern French Prealps (874 m a.s.l.), provides an 18-m long sedimentary sequence spanning the entire Lateglacial/Holocene period. The high-resolution multi-proxy (sedimentological, palynological, and geochemical) analysis of the uppermost 6.2 m reveals the Holocene dynamics of erosion in the catchment in response to landscape modifications. The mountain belt is at relevant altitude to study past human activities, and the watershed is sufficiently disconnected from large valleys to capture a local sedimentary signal. From 12,000 to 10,000 cal. BP (10–8 kyr cal. BC), the onset of hardwood species triggered a drop in erosion following the Lateglacial/Holocene transition. From 10,000 to 4500 cal. BP (8–2.5 kyr cal. BC), the forest became denser and favored slope stabilization, while erosion processes were very weak. A first erosive phase was initiated at ca. 4500 cal. BP without evidence of human presence in the catchment. Then, the forest declined at approximately 3000 cal. BP, suggesting the first human influence on the landscape. Two other erosive phases are related to anthropic activities: approximately 2500 cal. BP (550 cal. BC) during the Roman period and after 1600 cal. BP (350 cal. AD) with a substantial accentuation in the Middle Ages. In contrast, the lower erosion produced during the ‘Little Ice Age’, when climate deteriorations are generally considered to result in an increased erosion signal in this region, suggests that anthropic activities dominated the erosive processes and completely masked the natural effects of climate on erosion in the late Holocene. Keywords : climate, Holocene, human activities, montane lake, terrigenous inputs, vegetation Keywords (analyticals) : XRF, DRY-MATTER, LOI, GRAIN SIZE RADIOCARBON, SHORT LIVED RADIONUCLIDES, PHOTOGRAPHY

  • Core THU10-I : 18m long core An 18-m-long core was extracted in April 2010 from Lake "La Thuile" using a Uwitec platform and coring devices (Uwitec Usinger 90, Niederrreiter 63, Uwitec Gravity Pilote device) . Context of the study : Lake La Thuile, in the Northern French Prealps (874 m a.s.l.), provides an 18-m long sedimentary sequence spanning the entire Lateglacial/Holocene period. The high-resolution multi-proxy (sedimentological, palynological, and geochemical) analysis of the uppermost 6.2 m reveals the Holocene dynamics of erosion in the catchment in response to landscape modifications. The mountain belt is at relevant altitude to study past human activities, and the watershed is sufficiently disconnected from large valleys to capture a local sedimentary signal. From 12,000 to 10,000 cal. BP (10–8 kyr cal. BC), the onset of hardwood species triggered a drop in erosion following the Lateglacial/Holocene transition. From 10,000 to 4500 cal. BP (8–2.5 kyr cal. BC), the forest became denser and favored slope stabilization, while erosion processes were very weak. A first erosive phase was initiated at ca. 4500 cal. BP without evidence of human presence in the catchment. Then, the forest declined at approximately 3000 cal. BP, suggesting the first human influence on the landscape. Two other erosive phases are related to anthropic activities: approximately 2500 cal. BP (550 cal. BC) during the Roman period and after 1600 cal. BP (350 cal. AD) with a substantial accentuation in the Middle Ages. In contrast, the lower erosion produced during the ‘Little Ice Age’, when climate deteriorations are generally considered to result in an increased erosion signal in this region, suggests that anthropic activities dominated the erosive processes and completely masked the natural effects of climate on erosion in the late Holocene. Keywords : climate, Holocene, human activities, montane lake, terrigenous inputs, vegetation