Geobios最新文献

{"title":"Suidae (Mammalia, Artiodactyla) from the late Miocene hominoid locality of Alsótelekes (Hungary)","authors":"Alessio Iannucci ,&nbsp;David R. Begun","doi":"10.1016/j.geobios.2022.01.002","DOIUrl":"10.1016/j.geobios.2022.01.002","url":null,"abstract":"<div><p><span>The Suidae from the late Miocene of Alsótelekes (northeastern Hungary, Borsod-Abaúj-Zemplén county) are described and assigned to </span><em>Propotamochoerus palaeochoerus</em> (Suinae) and cf. <em>Parachleuastochoerus</em><span> (Tetraconodontinae). The co-occurrence of these two taxa agrees with a reference to the early Vallesian (MN</span> <span>9), as previously indicated from biochronological correlation of the small mammal fauna, and suggests the presence of woodland environments, with abundance of below-ground resources and direct access to water. This fits well with the diverse wetlands and riparian forests that characterized Lake Pannon ∼10 Ma, as documented in the geographically close site of Rudabánya. The convoluted taxonomy of European Tetraconodontinae is discussed.</span></p></div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48459201","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":"The Eastern Mediterranean fish fauna from the Piacenzian deposits of Polis Graben (Cyprus Island)","authors":"Angelos Agathangelou ,&nbsp;Konstantina Agiadi ,&nbsp;Efthymios Tsiolakis ,&nbsp;Spyros Sfenthourakis ,&nbsp;George Iliopoulos","doi":"10.1016/j.geobios.2022.02.001","DOIUrl":"10.1016/j.geobios.2022.02.001","url":null,"abstract":"<div><p><span><span>Marine Piacenzian deposits are extremely rare in the eastern Mediterranean region, resulting in a stratigraphic gap in our knowledge of the late </span>Pliocene evolution of the marine ecosystem and its fauna. Fish assemblages moreover are scant throughout the Pliocene. We present here the teleost fish fauna of the Piacenzian Polis basin (SW Cyprus) based on otolith assemblages, and we use them to reconstruct the </span>paleoenvironment<span><span><span>. Twenty-six teleost fish taxa are identified, placed under sixteen genera and five families. Planktonic foraminifera biostratigraphy places the studied outcrop within the subzones MPL4a and MPL5a (early–middle Piacenzian). Four species and two genera of fish are reported for the first time in the Piacenzian of the Mediterranean. The studied otolith assemblage from Androlykou section consists of very shallow-water fish mixed with mesopelagic taxa indicating topographical steepness with easy access to the </span>open ocean. In addition, the fish assemblages mainly include representatives of subtropical taxa suggesting a climate warmer than today. These data provide new information on the composition of the </span>ichthyofauna of the eastern Mediterranean during the Piacenzian, paving the way for new studies in the Cyprus area.</span></p></div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45570650","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 history of peatland communities of central Rif (Northern Morocco)","authors":"Serge D. Muller ,&nbsp;Amina Daoud-Bouattour ,&nbsp;Séverine Fauquette ,&nbsp;Marion Bottollier-Curtet ,&nbsp;Nabil Rifai ,&nbsp;Mary Robles ,&nbsp;Er-Riyahi Saber ,&nbsp;Mohammed El Madihi ,&nbsp;Saïd Moukrim ,&nbsp;Laila Rhazi","doi":"10.1016/j.geobios.2021.12.001","DOIUrl":"10.1016/j.geobios.2021.12.001","url":null,"abstract":"<div><p><span><span>The Maghreb’s Mediterranean coastal edge is home to many peatlands<span> with boreal floristic affinities and high conservation value. This work aims at investigating the </span></span>Holocene developmental history of these wetlands in Northern Morocco, based on pollen record, loss-on-ignition and </span>radiocarbon dating<span>. First, the comparison between modern pollen spectra and present-day hydrophytic vegetation makes it possible to identify the local pollen signal. Second, while peatlands have existed in the Rif for at least 13,000 years, their initiation mostly by paludification extends throughout the Holocene. Their plant composition remains relatively unchanged for millennia, but swamp undergrowth could locally experience changes in taxa dominance. Mid- to late-Holocene sedimentation changes appear to result from the human-induced regional decline of cedar. The major changes experienced by wetlands occurred recently, due to clearing, burning and overgrazing. Effective conservation policies should be urgently implemented in order to save the last relict peatlands of Northern Morocco.</span></p></div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49581305","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":"The equids from Liventsovka and other localities of the Khaprovskii Faunal Complex, Russia: A revision","authors":"Vera Eisenmann","doi":"10.1016/j.geobios.2021.11.001","DOIUrl":"10.1016/j.geobios.2021.11.001","url":null,"abstract":"<div><p><span>The age and homogeneity of the Khaprovskii Faunal Complex have been a matter of debate for a long time. This works provides the most complete information (photographs and numerical data) ever published on the equid remains of this Complex. Evidence is given for the presence of no less than three, possibly six taxa of Equids. Most fossils are referred to </span><em>Equus</em> (<em>Allohippus</em>) aff. <em>major</em> and to <em>Equus</em> (<em>Allohippus</em>) <em>livenzovensis</em>, both redefined on the basis of correlations between cranial and metapodial dimensions. Comparisons with Chinese fossils bring evidence for their age approximating 2.5 Ma. A third very large species is represented by a few teeth and metapodials which may have been intrusive. It is referred to <em>E.</em> (<em>Sussemionus</em>) aff. <em>verae</em> because of similarities with the NE Siberian species believed to be about 1<!--> <span>myr old. Accumulation of fossils during a long period is probably responsible for the large intraspecific variation observed in </span><em>E.</em> (<em>A.</em>) <em>major</em> and <em>E.</em> (<em>A.</em>) <em>livenzovensis</em> and for the occurrence of several other equid forms. Possible intrusions may also explain the abnormal number of observed taxa. Resemblances with Chinese and NE Siberian fossils indicate Asian influences on the composition of the Khaprovskii Faunal Complex.</p></div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41567751","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":"The bivalve fauna from the Letná Formation (Upper Ordovician) of Bohemia: Significance for palaeobiogeography, palaeoecology and diversification of bivalves","authors":"Marika Polechová","doi":"10.1016/j.geobios.2021.10.002","DOIUrl":"10.1016/j.geobios.2021.10.002","url":null,"abstract":"<div><p>The bivalve fauna from the Sandbian Letná Formation of the Prague Basin includes ten species: <em>Praenucula bohemica</em>, <em>Myoplusia</em> cf. <em>incisa</em>, <em>Synek</em> sp., <em>Pseudarca</em>? <em>incola</em>, <em>Cuneamya catilloides</em>, <em>Modiolopsis draboviensis</em>, <em>Macrodesma flexa</em>, <em>Ectenocardiomorpha veterana</em>, <em>Whiteavesia antiquior</em>, and <em>Myodakryotus patricia</em>. <em>Modiolopsis</em><span>, often used as a “cumulative” name for pteriomorphids from the Late Ordovician<span><span>, is recorded from the Letná Formation, including only one species. Species palaeoecology is analysed and briefly discussed. Although the infaunal and semi-infaunal elements still prevail, the epifaunal bivalves are also significantly represented. The Sandbian bivalve fauna of the Barrandian area comes from high latitudes of the </span>Southern hemisphere. Pteriomorphids are dominant, but heteroconchs and protobranchs belong also to important elements in the bivalve association from the Letná Formation. From coarse quartzose sandstones of the Letná Formation the </span></span><em>Modiolopsis draboviensis</em> Association of the <em>Modiolopsis</em><span> Community is established. The composition of the Late Ordovician bivalve fauna from the different areas and sedimentological environments are compared and discussed. There is a clear trend toward rapid diversification of pteriomorphids and epifaunal bivalves in all palaeocontinents. Bivalves from the Letná Formation of the Barrandian area show affinities to the Sandbian bivalve faunas from Avalonia, Laurentia and Morocco.</span></p></div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48566995","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":"Snapshots of pre-glacial paleoenvironmental conditions along the Sabrina Coast, East Antarctica: New palynological and biomarker evidence","authors":"Meghan Duffy ,&nbsp;Emily J. Tibbett ,&nbsp;Catherine Smith ,&nbsp;Sophie Warny ,&nbsp;Sarah J. Feakins ,&nbsp;Gilles Escarguel ,&nbsp;Rosemary Askin ,&nbsp;Amy Leventer ,&nbsp;Amelia E. Shevenell","doi":"10.1016/j.geobios.2021.09.001","DOIUrl":"10.1016/j.geobios.2021.09.001","url":null,"abstract":"<div><p><span><span>The Aurora Subglacial Basin (ASB) catchment contains 3–5 m of sea-level equivalent ice volume that drains to the Sabrina Coast, East Antarctica via the Totten Glacier system. Observed thinning and retreat of Totten Glacier indicate regional sensitivity to oceanographic and atmospheric warming. </span>Paleoclimate<span><span> studies of climatically sensitive catchments are required to understand the evolution of the East Antarctic Ice Sheet (EAIS) and its outlet glacier systems. Recent seismic and sediment studies from the Sabrina Coast document the evolution of the EAIS in the ASB catchment, suggesting that the region has long been sensitive to climatic changes. This study presents new palynological and biomarker data from Sabrina Coast continental shelf sediments. Detailed palynological records were obtained from four short jumbo piston cores (JPC; NBP14-02 JPC-30, -31, -54 and -55), enabling reconstructions of regional vegetation and environments prior to and during Cenozoic EAIS development. The Sabrina Flora is dominated by </span>angiosperms, with </span></span><em>Gambierina</em> spp. often exceeding 40% of the assemblage, and diverse Proteaceae, <em>Battenipollis</em> spp., <em>Forcipites</em> spp., <em>Nothofagidites</em> spp., fern, and conifer palynomorphs indicative of an open shrubby ecosystem. Excellent preservation and frequent occurrence of <em>Gambierina</em><span><span> spp. clusters suggest that a majority of the Sabrina Flora assemblage is penecontemporaneous with sedimentation; however, some uncertainties remain whether this sedimentation occurred in the Late Cretaceous or the </span>Paleogene. Despite that uncertainty, high abundances of </span><em>Gambierina</em> spp. and <em>Battenipollis</em> spp., in combination with relatively low (&lt;10%) <em>Nothofagidites</em> spp. abundances indicate that the Sabrina Flora is unique in Antarctica. Evaluation of biomarkers finds evidence for penecontemporaneous and reworked components. The penecontemporaneous C₃₀ <em>n</em>-alkanoic acids have δ¹³C values of −30.2 ± 0.5‰, consistent with δ¹³<span><span>C values in an open canopy woodland or shrubby open vegetation. Their hydrogen isotope (δD) values of −215 ± 4.5‰, indicate precipitation </span>isotopic composition (δD</span>_precip<span>) of −130‰, similar to coastal snow in the same region today. Together, Sabrina Flora palynomorph and plant wax data suggest a drier, more open coastal vegetation in the Aurora Basin of East Antarctica rather than the closed rainforest vegetation often described from other parts of Antarctica for the Cretaceous to Paleogene. To directly compare records from the circum-Antarctic, additional long sedimentary records with improved biostratigraphic constraints are required. Such records will enable identification of regional climate gradients or micro-climates, and allow assessment of the environmental conditions and mechanisms driving obser","PeriodicalId":55116,"journal":{"name":"Geobios","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49341455","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":"A new species of Manuherikia (Aves: Anatidae) provides evidence of faunal turnover in the St Bathans Fauna, New Zealand","authors":"Trevor H. Worthy ,&nbsp;R. Paul Scofield ,&nbsp;Steven W. Salisbury ,&nbsp;Suzanne J. Hand ,&nbsp;Vanesa L. De Pietri ,&nbsp;Jacob C. Blokland ,&nbsp;Michael Archer","doi":"10.1016/j.geobios.2021.08.002","DOIUrl":"10.1016/j.geobios.2021.08.002","url":null,"abstract":"<div><p><span>The St Bathans Fauna is a highly diverse non-marine vertebrate assemblage derived from the lower Miocene (19–16 Ma) Bannockburn Formation exposed in Central Otago, New Zealand. Deposited in palaeolake Manuherikia, remains of waterfowl dominate the avian assemblage, which, with eight known species in four genera, is one of the more diverse globally. Here we describe </span><em>Manuherikia primadividua</em><span> nov. sp., the fourth species in the genus. The stratigraphic distribution of fossils assignable to </span><em>M. primadividua</em> nov. sp. and a previously known species of <em>Manuherikia</em>, <em>M. lacustrina</em>, allow for the recognition of two distinct biozones within the Bannockburn Formation. Fossils of <em>Manuherikia lacustrina</em> are shown to be restricted to beds in the lower 26 m of the Bannockburn Formation in the Manuherikia River Section while fossils of the new species only occur in beds higher than 34 m in this section. This zonation allows correlation of the disparate sites in nearby Mata Creek with the stratigraphy in the Manuherikia River Section. This is the first such biostratigraphical zonation recognised in the fossil-bearing horizons at St Bathans; all other vertebrates have distributions spanning the stratigraphical range of both species. We tentatively correlate this vertebrate zonation with the previously identified pollen zonation, namely the Casuarinaceae Zone and its overlying Asteraceae-Chenopodiaceae or <em>Chenopodipollis chenopodiaceoides</em> Zone. This transition marks a relatively minor environmental change towards drier and more seasonal climates that appears to have driven the palaeoecological replacement of <em>M. lacustrina</em> by <em>M. primadividua</em> nov. sp. in palaeolake Manuherikia.</p></div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45669104","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":"Vitinellopsis nov. gen., a new calcareous alga (Chlorophyta, Bryopsidales) from the Silurian of Gotland (Sweden), and the tribe Vitinelleae nov. nom","authors":"Daniel Vachard ,&nbsp;Ioan I. Bucur ,&nbsp;Axel Munnecke","doi":"10.1016/j.geobios.2021.10.001","DOIUrl":"10.1016/j.geobios.2021.10.001","url":null,"abstract":"<div><p>The algal genus <em>Vitinellopsis</em><span><span> nov. gen. is well represented in the Silurian limestones of Gotland (Sweden). This new taxon is interpreted as a calcified codiacean alga (Chlorophyta, Bryopsidales). In the studied material, the calcareous wall of sparry </span>calcite, probably originally aragonitic, appears well preserved. The subcylindrical thallus, with rounded ends, rarely bifurcated, measures up to 27 mm long and 2.5 mm wide. The medullar zone exhibits 4–6 longitudinal, subtly undulating siphons; the subcortical zone shows inflated, vesiculiform radial siphons, and the cortical zone displays small, relatively short acrophorous siphons. The status of the tribe Vitinelleae </span><em>nomen novum</em>, formerly Bothryelleae, is discussed. Given its abundance, ease of identification, and short stratigraphic range, <em>Vitinellopsis gotlandica</em> nov. gen., nov. sp. may prove useful for regional correlations, facies and paleobiogeographic studies.</p></div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44709087","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":"Latest Smithian (Early Triassic) ammonoid assemblages in Utah (western USA basin) and their implications for regional biostratigraphy, biogeography and placement of the Smithian/Spathian boundary","authors":"Arnaud Brayard ,&nbsp;James F. Jenks ,&nbsp;Kevin G. Bylund ,&nbsp;Nicolas Olivier ,&nbsp;Emmanuelle Vennin ,&nbsp;Daniel A. Stephen ,&nbsp;Gilles Escarguel ,&nbsp;Emmanuel Fara","doi":"10.1016/j.geobios.2021.05.003","DOIUrl":"10.1016/j.geobios.2021.05.003","url":null,"abstract":"<div><p><span>The late Smithian extinction represents a major event within the Early Triassic<span>. This event generally corresponds to a succession of two, possibly three successively less diverse, cosmopolitan ammonoid assemblages, which when present, provide a robust biostratigraphic framework and precise correlations at different spatial scales. In the western USA basin, known occurrences of latest Smithian taxa are rare and until now, have only been documented from northeastern Nevada. Based on these restricted basinal occurrences, a regional zone representing the latest Smithian was postulated but not corroborated, as representative taxa had not yet been reported from outside Nevada. Here we document two new ammonoid assemblages from distant localities in northern Utah, overlying the late Smithian </span></span><em>Anasibirites</em> beds and characterized by the unambiguous co-occurrence of <em>Xenoceltites subevolutus</em> and <em>Pseudosageceras augustum</em>. The existence of a latest Smithian zone in the western USA basin is therefore validated, facilitating the identification of the Smithian/Spathian boundary and intra-basin correlation. This zone also correlates with the latest Smithian zone recognized from southern Tethyan basins. Additionally, these new data support other observed occurrences of <em>Xenoceltites subevolutus</em> throughout most of the late Smithian.</p></div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.geobios.2021.05.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43515552","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":"Pyritized preservation of chancelloriids from the Cambrian Stage 3 of South China and implications for biomineralization","authors":"Hao Yun ,&nbsp;Linhao Cui ,&nbsp;Luoyang Li ,&nbsp;Wei Liu ,&nbsp;Xingliang Zhang","doi":"10.1016/j.geobios.2021.06.001","DOIUrl":"10.1016/j.geobios.2021.06.001","url":null,"abstract":"<div><p><span><span>The enigmatic Cambrian animal chancelloriids were discovered in a wide range of taphonomic settings; however, preservation of biomineralized sclerite microstructure was solely known from secondarily phosphatized skeletal remains<span>. Here, we investigate a uniquely pyritized chancelloriid from the lower Cambrian Guojiaba Formation in southern Shaanxi Province, China, using a combination of advanced analytic techniques. Results of the energy dispersive spectroscopy (EDS), X-Ray Fluorescence (XRF), and Raman spectrum show that the sclerites and scleritomes are preserved as pyritized internal moulds with a calcitic outer layer. The outer layer enveloping the internal moulds likely represents the recrystallized counterpart of the original biomineralized sclerite wall. Distinctive fibrous microstructures are discovered in the sclerites, which echo the features seen in the phosphatized </span></span>fossils of chancelloriids. The typical microstructure, along with the recrystallized </span>calcite<span>, corroborate the interpretation that chancelloriid sclerites were originally constructed by fibrous aragonite. The stability of the microstructure and mineral composition in both carbonate and siliciclastic backgrounds indicate that chancelloriids were adapted to exploit aragonitic fibres to build their skeletons regardless of the change of their living environments.</span></p></div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.geobios.2021.06.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44541987","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}