Quaternaire最新文献

{"title":"Avant-propos : le colloque Q11 - au centre des enjeux","authors":"Hélène Tissoux, J. Jacob","doi":"10.4000/QUATERNAIRE.11670","DOIUrl":"https://doi.org/10.4000/QUATERNAIRE.11670","url":null,"abstract":"Ce numero de la revue Quaternaire reunit des articles issus de communications presentees lors du 11eme colloque international sur le Quaternaire « Q11 - Au Centre des enjeux ». Le colloque Q11 a eu lieu a Orleans les 13, 14 et 15 fevrier 2018, organise par le Bureau de Recherches Geologiques et Minieres et l’Institut des Sciences de la Terre d’Orleans, sous le patronage de l’Association Francaise pour l’Etude du Quaternaire - Comite National Francais de l’International Union for Quaternary Sc...","PeriodicalId":49645,"journal":{"name":"Quaternaire","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42197350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Du nouveau à Menchecourt (Abbeville) - nouvelles données stratigraphiques, archéologiques, paléoenvironnementales et géochronologiques pour un site paléolithique « historique » de la vallée de la Somme (France)","authors":"Jean-Jacques Bahain, Sylvie Coutard, N. Limondin‑Lozouet, Pierre Voinchet, P. Antoine, P. Auguste, C. Falguères, Qingfeng Shao, J. Locht","doi":"10.4000/QUATERNAIRE.11711","DOIUrl":"https://doi.org/10.4000/QUATERNAIRE.11711","url":null,"abstract":"Connu depuis le XVIIIe siecle et explore notamment par Jacques Boucher de Perthes et Joseph Preswitch dans les annees 1840‑1860, le site de Menchecourt a Abbeville a joue au XIXe siecle un role essentiel dans la reconnaissance de la coexistence de l’Homme et d’especes animales disparues, fondement de la Prehistoire en tant que science. Restee par la suite longtemps inaccessible en raison de l’urbanisation de la ville a la fin du xixe siecle et au cours du XXe siecle, la localite a fait l’objet en 2014 d’une operation d’archeologie preventive menee par l’INRAP sur un terrain situe a proximite immediate du site historique. La sequence stratigraphique mise au jour repose sur le substrat crayeux a une altitude de + 2‑3 m NGF, soit + 14/15 m d’altitude relative par rapport a l’incision maximale sous le fond de vallee actuel. Elle comprend une succession de niveaux fluviatiles et (ou) fluvio-marins recouverts par une sequence de couverture lœssique (loess et paleosols), tres proche de celle observee au XIXe siecle. Bien que le niveau ayant livre des pieces attribuees a l’industrie laminaire « menchecourienne » definie par G. d’Ault du Mesnil a la fin du XIXe siecle n’ait pas ete retrouve, plusieurs niveaux archeologiques et paleontologiques rattachables au Paleolithique moyen et inferieur ont ete reperes au sommet des sediments fluviatiles interglaciaires de la terrasse ainsi qu’au sein de la sequence limoneuse glaciaire recouvrant celle-ci. Les donnees paleontologiques et geochronologiques disponibles permettent de positionner la mise en place de la sequence au sein des stades isotopiques marins (SIM) 8 et 6 et confirment l’interet d’organiser dans le futur une etude plus poussee de cette localite majeure de la Prehistoire abbevilloise.","PeriodicalId":49645,"journal":{"name":"Quaternaire","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47506881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Séquence de comblement d’un paléovallon en contexte de plateau beauceron (290-10 ka) : la coupe de Courville‑sur‑Eure (Eure‑et‑Loir, France)","authors":"Céline Coussot, M. Liard, Sebastian Kreutzer, N. Mercier","doi":"10.4000/QUATERNAIRE.11740","DOIUrl":"https://doi.org/10.4000/QUATERNAIRE.11740","url":null,"abstract":"Le front de taille d’une carriere a Courville-sur-Eure (Eure-et-Loir, France) a revele une importante epaisseur de limons colmatant un paleovallon creuse dans le substrat tertiaire en rive gauche de l’Eure. Les caracteristiques macroscopiques des unites pedo-sedimentaires suggeraient une mise en place au cours du Pleistocene. La rarete d’observations de telles accumulations en contexte de plateau dans le nord de la region Centre a conduit a realiser une serie d’etudes dans le but de documenter au mieux ces depots. Ainsi, six echantillons destines a des datations par luminescence ont ete preleves sur l’ensemble de la sequence, tandis que des prelevements pour des analyses granulometriques, chimiques et micromorphologiques ont ete realises dans sa partie centrale. Les resultats des datations montrent que le comblement s’etend de la seconde partie du Pleistocene moyen, aux environs de 290 ka, jusqu’a l’Holocene. Les etudes micromorphologiques et granulometriques concernent la periode comprise entre le dernier interglaciaire eemien et le Pleniglaciaire weichselien moyen. Elles montrent l’existence de sols polyphases cumuliques, alimentes regulierement par des petits apports lateraux. Regionalement, il s’agit de la troisieme sequence stratigraphique pleistocene a beneficier d’une campagne de datations numeriques, apres celle de Bonneval (Sun et al., 2010 ; Despriee et al., 2018) et celle d’Illiers-Combray (Borderie et al., 2019). Outre l’aspect purement chronostratigraphique, ces resultats sont importants pour la recherche archeologique en contexte preventif car ils assurent l’existence d’un fort potentiel de conservation des sites paleolithiques.","PeriodicalId":49645,"journal":{"name":"Quaternaire","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47763759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Le site préhistorique de la Roche‑Cotard IV (Indre-et-Loire, France) : une séquence du pléistocene moyen et supérieur, référence pour le val de Loire tourangeau","authors":"J. Marquet, J. Macaire, Grégory Bayle, Jean‑Baptiste Peyrouse, Émilie Guillaud, T. Aubry, M. Liard, J. Breheret, Kristina Jørkov Thomsen, Trine Holm Freiesleben, Édit Thamoné‑Bozso, G. Guérin, A. Murray","doi":"10.4000/QUATERNAIRE.11746","DOIUrl":"https://doi.org/10.4000/QUATERNAIRE.11746","url":null,"abstract":"Le site prehistorique de La Roche-Cotard (LRC) se trouve sur le versant de rive droite de la vallee de la Loire, un peu en amont de Langeais, en Indre-et-Loire. Le site a ete rendu accessible grâce a un important prelevement de materiaux en 1846. La grotte principale (LRC I) a ete fouillee en 1912 : elle contenait une industrie du Paleolithique moyen et des traces digitaux y ont ete decouverts en 1975 et valides en 2008. La reprise des fouilles sur le site a partir de 2008 (locus LRC IV tres proche de LRC I) a permis de mettre en evidence une coupe puissante de 11 metres comprenant 22 couches distinctes dont la partie inferieure comble un abri. La stratigraphie combine, de bas en haut, des apports karstiques de milieu souterrain, des sables fluviatiles et eoliens issus de la vallee de la Loire et gravitaires du versant. Des indices d’occupation anthropique (industrie lithique, os brules) attestent une occupation de cet espace. Les nombreuses datations des couches par radiocarbone et par OSL permettent de situer chronologiquement ce remplissage entre la limite des stades isotopiques marins 7 et 6 (couche 22 ‑ 169 ka) et la limite des stades 3 et 2 (couche 2 - 25 ka). Le locus a donne lieu a une etude pluridisciplinaire aussi complete que possible (sedimentologie et micromorphologie, faunes de petits et grands vertebres, industrie lithique). Ces donnees apportent des precisions nouvelles sur l’evolution paleoenvironnementale de la region, mal connue dans cette fourchette de temps. La geometrie et l’âge des depots conduisent a l’hypothese selon laquelle la grotte (LRC I) a ete impenetrable par Homo sapiens au moins a partir du debut du stade isotopique marin 3 (60 ka) et donc que les productions parietales a caractere symbolique de la grotte sont tres probablement a attribuer a l’homme de Neandertal.","PeriodicalId":49645,"journal":{"name":"Quaternaire","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48468544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Jean-Philip Brugal (dir.) : TaphonomieS. Ouvrage du Groupement de recherches 3591 « Taphonomie, Environnement et Archéologie »","authors":"Jean-Baptiste Mallye","doi":"10.4000/quaternaire.11629","DOIUrl":"https://doi.org/10.4000/quaternaire.11629","url":null,"abstract":"Contrairement a ce que l’on pourrait penser, il ne s’agit pas d’un manuel sur la taphonomie mais sur LES taphonomies dans le sens le plus large de l’acceptation de ce terme. Jean-Philip Brugal a ici su federer quarante-cinq chercheurs delivrant pres d’une trentaine de contributions sur des etudes en taphonomie. Apres une partie introductive, l’ouvrage est decline en six parties. La premiere s’attache a decrire les modalites de conservation et de transformation des vestiges par une etude, a l’...","PeriodicalId":49645,"journal":{"name":"Quaternaire","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46320399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Holocene coastal changes along the Gironde estuary (SW France): new insights from the North Médoc peninsula beach/dune system","authors":"P. Stéphan, Florence Verdin, G. Arnaud-Fassetta, F. Bertrand, F. Eynaud, Ane García-Artola, M. Bosq, Camille Culioli, S. Suanez, C. Coutelier, P. Bertran, S. Costa","doi":"10.4000/QUATERNAIRE.11172","DOIUrl":"https://doi.org/10.4000/QUATERNAIRE.11172","url":null,"abstract":"Located at the mouth of the Gironde estuary (southwestern Atlantic coast of France), the Amelie beach was strongly eroded during the recent stormy events, especially in the winter of 2013-2014. The escarpment at the dune front and the truncation of the beach uncovered a set of estuarine and aeolian sediment deposits containing numerous archaeological remains. A campaign of topographic surveys was undertaken with DGPS and TLS materials during the springs of 2014 and 2015 along the 2 km length of the Amelie beach in order to reconstruct the elevation and stratigraphy of these deposits. Sedimentological analyses (grain size, micro-faunal) were performed to better constrain the depositional environment. Archaeological remains and several radiocarbon dates obtained from sediment samples collected in the field were used to propose a consistent chronological framework for this sedimentary sequence. Ten main lithofacies were distinguished from the lower part of the beach to the top of the dune. The base of the sedimentary sequence is composed to of Pleistocene deposits dating from MIS9 (unit 1a) to MIS2 (Unit 1b) (Bosq et al., this issue). The Holocene sedimentary infilling began around 5000 BC with an accumulation of marine coarse sands, which suggests the presence of a tidal inlet. On both sides of this tidal channel, archaeological remains dating from the early Neolithic period up to the Bronze Age testify to a human occupation of the coastal area. From ca. 5000 to ca. 3500 cal. BP, a characteristic deposit of intertidal mudflats indicates the transformation of the tidal inlet into estuarine marshes protected by a coastal dune barrier. Between ca. 3500 and ca. 3000 cal. BP, the dune barrier records a phase of erosion which results in the exposure of the marsh to stronger hydrodynamic conditions. From ca. 2800 to 1650, a second phase of estuarine sedimentation is recognized. This period is characterized by significant human occupation as indicated by the presence of numerous archaeological remains of the Iron Age and Gallo-roman periods, associated with the exploitation of a saltwater-to-brackish environment. From 1650 to 1250 cal. BP, the estuarine saltmarsh is gradually overrun by northward migrating coastal-dune fields. After 1250 cal. BP, the marsh is completely covered by the aeolian sands. These results are consistent with previously published data and allow to locally details the sequence of paleogeographic changes of the north-Medoc peninsula. Using the \"sea-level index points\" method (Hijma et al., 2015), the analysis of radiocarbon dated levels also provides new relative sea-level records for this part of the French Atlantic coast. Finally, the phases of coastal dune activity/stability recognized along the Amelie beach are synchronous with those in the wider Aquitaine coastal region, suggesting a regional driving factor. We propose that the shared sedimentary dynamics are the consequence of the onshore migration of intertidal and subtidal san","PeriodicalId":49645,"journal":{"name":"Quaternaire","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44106570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Settlement potential and constraints on the lower Médoc coastline: results of the Litaq project and considerations on coastal palaeo‑risks in the protohistoric periods","authors":"F. Bertrand, Florence Verdin, F. Eynaud, G. Arnaud-Fassetta, P. Stéphan, S. Costa, S. Suanez","doi":"10.4000/QUATERNAIRE.11228","DOIUrl":"https://doi.org/10.4000/QUATERNAIRE.11228","url":null,"abstract":"The adaptation of territorial systems to the ongoing climate change is an issue which implies to test past populations abilities to cope, to “bounce back” or to adapt during similar past environmental changes. The chronostratigraphical and archaeological results, obtained in the frame of the LITAQ project, make it possible to better understand changes encountered by a coastal system (now on the shore front) whose intense occupation since the Neolithic period was linked to the exploitation of specific resources (salt, grazing), then inherent to a fluvial mouth and estuarine system, at present fossilized under the modern dune. One of the issues raised by these results is linked to the decline of salt-related activities during the whole Bronze period, whereas it is bracketed by a period of growing during the Neolithic (for which we were far from measuring the real amplitude) and by the first Iron Age during which salt production appears to be the main motivation for the settlement and the use of coastal marshes. However, the chronological gap, of about thirteen centuries, recorded between the Early Bronze Age (~2200 BC) and the Late Bronze Age (~900 BC), prevents us from using climate changes as a deterministic and unique factor of land-use changes of the Medoc Peninsula around the first millennium. The complex rhythms, that accompany those changes during this period and the subsequent Iron Age, invite us to consider the territorial vulnerability in a context of hydrogeomorphological modifications of the coast synchronously to those of natural components involved in the salt production process. Modalities of the spatial development of this activity (as deduced from the analysis of inventoried remains) in a context of restricted tidal exchanges (i.e. barred estuary), testify to the adaptability of protohistoric Medocan communities, which faced a slow and progressive disturbance of the coastal system; they attest also to the past resilience, in its systemic sense, of a territory nowadays far from major influences.","PeriodicalId":49645,"journal":{"name":"Quaternaire","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47950478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Foreword: North-Médoc quaternary formations as indicators of change in European environments and associated human settlements: new insights after the \"LITAQ project\"","authors":"F. Eynaud, Florence Verdin, J. Tastet","doi":"10.4000/quaternaire.11075","DOIUrl":"https://doi.org/10.4000/quaternaire.11075","url":null,"abstract":"Recent severe winters have opened observation windows along the Aquitaine coastline (SW France) with particularly drastic impacts along the northern Gironde shores (Castelle et al., 2015), where, exceptionally, palaeoenvironmental sedimentary records and archaeological materials sealed below modern sand dunes are exposed in the intertidal zones (e.g. Tastet & Pontee, 1998; Aubie & Tastet, 2000). Historically these sedimentological sequences have been the focus of archaeologists ever since imp...","PeriodicalId":49645,"journal":{"name":"Quaternaire","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43925186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Holocene palaeoenvironmental evolution of the Médoc peninsula (SW France): insights from the sedimentological study of the “Lède du Gurp” archaeological site","authors":"S. Faye, F. Eynaud, M. Bosq, C. Lambert, Florence Verdin, P. Véquaud, Ophélie Lodyga, Hervé Dériennic, P. Lebleu, S. Bujan, I. Billy, Bernard Martin, J. Roussot-Larroque","doi":"10.4000/QUATERNAIRE.11164","DOIUrl":"https://doi.org/10.4000/QUATERNAIRE.11164","url":null,"abstract":"High coastal erosion rates along the beaches of the Medoc peninsula urge for the study of the Pleistocene and Holocene deposits buried under the modern dune. Those deposits are known to be exceptionally rich in archaeological remains (from the Mesolithic at least). The aggressive predation of these fossil deposits by the sea explains the urgency of exploring their content and their sedimentological history. Within these formations, the “Lede du Gurp” archaeological site located on the shore, on the administrative boundary of Soulac-sur-Mer and Grayan-et-l’Hopital, is of tremendous value for palaeogeographical and palaeoenvironmental reconstructions of the Medoc peninsula. This site has preserved remains of dense anthropic activity but also evidence of the history of the estuary’s migration before our contemporary era (i.e. recent centuries). Here we present results of new sedimentological investigations conducted as part of the LITAQ project on and around the site. Continuous and undisturbed sections several metres thick (up to 3.5 m) have been obtained by sampling (sediment slides) and coring operations in the field and studied for their lithostratigraphy (using classic and X-ray imaging coupled with spectrocolorimetry, X-ray fluorescence and grain-size analyses together with radiocarbon dating) along with simultaneous archaeological investigations. Our study refines the palaeoenvironmental evolution of the site over at least the Neolithic period and supports previous interpretations of the origin of these atypical lithofacies, i.e. the deposition of a thick Holocene sequence of clays and peats in a depression associated with karstification processes. Our new datings and observations suggest the possible occurrence of a thermokarst system during the coldest phases of the last deglaciation.","PeriodicalId":49645,"journal":{"name":"Quaternaire","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46561364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stratigraphy and chronology of Pleistocene coastal deposits in northern Aquitaine, France: a reinvestigation","authors":"M. Bosq, P. Bertran, Cédric Beauval, S. Kreutzer, M. Duval, M. Bartz, N. Mercier, Luca Sitzia, P. Stéphan","doi":"10.4000/QUATERNAIRE.11112","DOIUrl":"https://doi.org/10.4000/QUATERNAIRE.11112","url":null,"abstract":"Pleistocene deposits exposed along the coast of the Medoc area, south-west France, represent valuable palaeoenvironmental archives that have been the subject of extensive work in the past few decades. To further understand the palaeoenvironmental history and sedimentary dynamics of these deposits, a detailed lithostratigraphic study was performed on a series of new sections. Additionally, new chronological data were obtained from the combination of luminescence (OSL, IR-RF) and electron spin resonance (ESR) dating of quartz and feldspar grains (Kreutzer et al., 2018). The investigated sections comprise estuarine, lacustrine and peaty deposits (Negade Formation, Argiles du Gurp Formation), aeolian sands (Sables du Gurp Formation) and colluvial units (Gres de l'Amelie Formation). The Argiles du Gurp Formation, in which many remains of Palaeoloxodon antiquus were found, support the hypothesis of a progressive replacement of a tide-inluenced marsh by a peaty fresh-water pond during the Holsteinian Interglacial (MIS 11). IR-RF dating of green estuarine clays at L’Amelie, in the northernmost part of the investigated area, strongly suggests that they do not belong to the Argile du Gurp Formation, but were deposited during the MIS 9 sea level highstand. The estuarine deposits are overlain by sandsheets (Sables du Gurp Formation) dated to MIS 10 and MIS 8 at Pointe de la Negade in the southern part of the study area, and to MIS 8 at L’Amelie. Syngenetic frost cracks testify to a periglacial depositional environment. Regional studies show that the Sables du Gurp Formation is a local equivalent of the Sables des Landes Formation, and corresponds to the oldest aeolian phase recorded in south-west France so far. Colluvial material (Gres de l'Amelie Formation) dated to the Weichselian pleni-glacial (MIS 2) ill small palaeo-valleys incised in the Sables du Gurp Formation. Holocene coastal dunes cover the whole sequence.","PeriodicalId":49645,"journal":{"name":"Quaternaire","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46083485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}