Repository logo
 
Publication

A new MIS 5 to MIS 2 speleothem record from Sandkraal Cave on the South African Cape south coast

2024Journal article Open access
Simple item page
dc.contributor.authorBraun, Kerstin
dc.contributor.authorBar-Matthews, Miryam
dc.contributor.authorAyalon, Avner
dc.contributor.authorMatthews, Alan
dc.contributor.authorZilberman, Tami
dc.contributor.authorZolotova, Natalya
dc.contributor.authorCowling, Richard M.
dc.contributor.authorKarkanas, Panagiotis
dc.contributor.authorCawthra, Hayley C.
dc.contributor.authorFisher, Erich
dc.contributor.authorEdwards, R. Lawrence
dc.contributor.authorLi, Xianglei
dc.contributor.authorMarean, Curtis W.
dc.date.accessioned2024-04-15T10:45:14Z
dc.date.available2024-04-15T10:45:14Z
dc.date.issued2024
dc.description.abstractWe present new stable oxygen and carbon isotope composite records (delta O-18, delta C-13) of speleothems from Sandkraal Cave 1 (SK1) on the South African south coast for the time interval between 104 and 18 ka (with a hiatus between 48 and 41 ka). Statistical comparisons using kernel-based correlation analyses and semblance analyses based on continuous wavelet transforms inform the relationships of the new speleothem records to other proxies and their changes through time. Between 105 and similar to 70 ka, changes of speleothem delta O-18 values at SK1 are likely related to rainfall seasonality. Variations of delta C-13 values are associated with changes of vegetation density, prior carbonate precipitation (PCP), CO2 degassing in the cave, and possibly variations of the abundance of C-3 and C-4 grasses in the vegetation. The relationships of delta O-18 with other proxies shift between similar to 70 and 48 ka (Marine Isotope Stages 4-3) so that both stable isotope records now reflect CO2 degassing, evaporation, and PCP. Similar relationships also continue after the hiatus for the deposition phase between 42 and 18 ka. Our findings support modeling results suggesting drier conditions in the study area when the Southern Hemisphere westerlies are shifted north and the paleo-Agulhas Plain is exposed.pt_PT
dc.description.sponsorshipBCS-0524087; BCS-1138073; BCS-1460376; 2002486; 2002474pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1017/qua.2024.3pt_PT
dc.identifier.issn0033-5894
dc.identifier.urihttp://hdl.handle.net/10400.1/20631
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherCambridge University Presspt_PT
dc.relationMulti-level assessment of ocean-climate dynamics: a gateway to interdisciplinary training and analysis
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/pt_PT
dc.subjectPleistocenept_PT
dc.subjectSouth Africapt_PT
dc.subjectSpeleothemspt_PT
dc.subjectStable isotopespt_PT
dc.subjectCape Floristic Regionpt_PT
dc.subjectPaleo-Agulhas Plainpt_PT
dc.subjectLast Glacial Maximumpt_PT
dc.titleA new MIS 5 to MIS 2 speleothem record from Sandkraal Cave on the South African Cape south coastpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMulti-level assessment of ocean-climate dynamics: a gateway to interdisciplinary training and analysis
oaire.awardURIinfo:eu-repo/grantAgreement/EC/FP7/238512/EU
oaire.citation.endPage161pt_PT
oaire.citation.startPage142pt_PT
oaire.citation.titleQuaternary Researchpt_PT
oaire.citation.volume118pt_PT
oaire.fundingStreamFP7
person.familyNameFisher
person.givenNameErich Christopher
person.identifier.ciencia-id9B1B-910B-3403
person.identifier.orcid0000-0002-9499-6093
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication5ddaf1db-45be-4345-8485-d0226f04fb30
relation.isAuthorOfPublication.latestForDiscovery5ddaf1db-45be-4345-8485-d0226f04fb30
relation.isProjectOfPublicationa88d498b-c41b-4079-82a4-fa6436987e22
relation.isProjectOfPublication.latestForDiscoverya88d498b-c41b-4079-82a4-fa6436987e22

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
a-new-mis-5-to-mis-2-speleothem-record-from-sandkraal-cave-on-the-south-african-cape-south-coast.pdf
Size:
1.76 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
3.46 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

ICR2-Artigos (em revistas ou actas indexadas)