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Sedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard): environmental and climatic implications for the late Holocene

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dc.contributor.authorOliva, Marc
dc.contributor.authorVieira, Goncalo
dc.contributor.authorPina, P.
dc.contributor.authorPereira, P.
dc.contributor.authorNeves, Mário
dc.contributor.authorFreitas, M. C.
dc.date.accessioned2017-07-11T15:34:06Z
dc.date.available2017-07-11T15:34:06Z
dc.date.issued2014
dc.description.abstractIce wedges are widespread periglacial features in the landscape of Adventdalen, Svalbard. The networks of ice wedges have created areas with well-developed polygonal terrains in the lowest fluvial terraces in this valley. We have examined the sedimentological characteristics of the northern and southern banks of the Advent river for palaeoenvironmental purposes. The base of two sedimentary sections reported radiocarbon dates of 3.3 and 3.9 ka BP, respectively. The northern site is constituted by three very different lithostratigraphical units, which suggests that their formation should be related to different environmental and climate conditions. By contrast, the southern section shows a rather homogeneous composition, with no significant variations in grain size and organic matter content. In both cases the uppermost sediments are constituted by a thick aeolian deposit. According to our data, warmer climate conditions may have prevailed during the mid Holocene until 3.3 ka BP with widespread peat formation in the valley bottom. Subsequently, a period with alternating soil formation and aeolian sedimentation took place from 3 to 2.5 ka BP, probably due to increasing climatic severity. During the last millennium a long-term cooling trend has favoured aeolian deposition in the lowest part of Adventdalen.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationOliva, M., Vieira, G., Pina, P., Pereira, P., Neves, M., & Freitas, M. C. (2014). Sedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard): environmental and climatic implications for the late Holocene. Solid Earth, 5(2), 901-914. https://doi.org/10.5194/se-5-901-2014pt_PT
dc.identifier.doi10.5194/se-5-901-2014pt_PT
dc.identifier.issn1869-9510
dc.identifier.issn1869-9529
dc.identifier.urihttp://hdl.handle.net/10451/28309
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherCopernicus Publicationspt_PT
dc.subjectlate Holocenept_PT
dc.subjectSedimentological characteristicspt_PT
dc.subjectice-wedge polygon terrainpt_PT
dc.subjectAdventdalen (Svalbard)pt_PT
dc.subjectenvironmental implicationspt_PT
dc.subjectclimatic implicationspt_PT
dc.titleSedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard): environmental and climatic implications for the late Holocenept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage914pt_PT
oaire.citation.issue2pt_PT
oaire.citation.startPage901pt_PT
oaire.citation.titleSolid Earthpt_PT
oaire.citation.volume5pt_PT
person.familyNameOliva
person.familyNameBrito Guapo Teles Vieira
person.familyNameNeves
person.givenNameMarc
person.givenNameGonçalo
person.givenNameMário
person.identifierG-5958-2010
person.identifier.ciencia-id5510-AC71-085A
person.identifier.ciencia-id2519-6583-CAEA
person.identifier.ciencia-idC318-7F45-8859
person.identifier.orcid0000-0001-6521-6388
person.identifier.orcid0000-0001-7611-3464
person.identifier.orcid0000-0002-6001-4848
person.identifier.ridK-5423-2014
person.identifier.scopus-author-id35225198700
person.identifier.scopus-author-id7005863976
person.identifier.scopus-author-id55812861300
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationd416bf65-77f6-488e-b275-5fbb257df6d4
relation.isAuthorOfPublication7039fbb2-e1f8-4c3e-80f1-603b12d33c1c
relation.isAuthorOfPublication83ebbfed-32a0-44b5-aec9-58b0613855df
relation.isAuthorOfPublication.latestForDiscovery7039fbb2-e1f8-4c3e-80f1-603b12d33c1c

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