We are upgrading the repository! A content freeze is in effect until November 22nd, 2024 - no new submissions will be accepted; however, all content already published will remain publicly available. Please reach out to repository@u.library.arizona.edu with your questions, or if you are a UA affiliate who needs to make content available soon. Note that any new user accounts created after September 22, 2024 will need to be recreated by the user in November after our migration is completed.

Show simple item record

Radiocarbon Dating of Total Soil Organic Matter and Humin Fraction and its Comparison with 14C Ages of Fossil Charcoal

dc.contributor.authorPessenda, L. C. R.
dc.contributor.authorGouveia, S. E. M.
dc.contributor.authorAravena, R.
dc.date.accessioned2021-02-11T21:32:53Z
dc.date.available2021-02-11T21:32:53Z
dc.date.issued2001-01-01
dc.identifier.citationPessenda, L. C. R., Gouveia, S. E. M., & Aravena, R. (2001). Radiocarbon dating of total soil organic matter and humin fraction and its comparison with 14C ages of fossil charcoal. Radiocarbon, 43(2B), 595-601.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S0033822200041242
dc.identifier.urihttp://hdl.handle.net/10150/654602
dc.descriptionFrom the 17th International Radiocarbon Conference held in Jerusalem, Israel, June 18-23, 2000.
dc.description.abstractDuring the last decade radiocarbon dating has been used extensively in distinct regions of Brazil to provide information about soil chronology in paleoenvironmental studies. This paper presents 14C dating of soil organic matter (SOM), humin fraction, and charcoal in several soil profiles under natural vegetation from different Brazil locations (north, central, and southeast regions). The main objective is to compare the obtained 14C dating of total SOM with humin, the oldest fraction of SOM. In order to validate the humin ages these data are compared with the age of charcoal collected at similar depths. The 14C ages obtained on charcoal were, in most of the cases, in agreement with the humin fraction considering the experimental errors, or 20% older in average. The dates obtained from total SOM showed significantly younger ages than the humin fraction indicating contamination by younger carbon. These results show the humin fraction is considered a reliable material for 14C dating in soils. However, the humin fraction ages could be assumed as the minimum ages for carbon in soils.
dc.language.isoen
dc.publisherDepartment of Geosciences, The University of Arizona
dc.relation.urlhttp://radiocarbon.webhost.uits.arizona.edu/
dc.rightsCopyright © by the Arizona Board of Regents on behalf of the University of Arizona. All rights reserved.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectBrazil
dc.subjectSouth America
dc.subjectorganic acids
dc.subjectParana Brazil
dc.subjecthumic acids
dc.subjectSao Paulo Brazil
dc.subjectHolocene
dc.subjectcorrelation
dc.subjectsoils
dc.subjectorganic compounds
dc.subjectCenozoic
dc.subjectcharcoal
dc.subjectQuaternary
dc.subjectC 14
dc.subjectcarbon
dc.subjectdates
dc.subjectisotopes
dc.subjectradioactive isotopes
dc.subjectabsolute age
dc.titleRadiocarbon Dating of Total Soil Organic Matter and Humin Fraction and its Comparison with 14C Ages of Fossil Charcoal
dc.typeProceedings
dc.typetext
dc.identifier.journalRadiocarbon
dc.description.collectioninformationThe Radiocarbon archives are made available by Radiocarbon and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform February 2021
dc.source.volume43
dc.source.issue2B
dc.source.beginpage595
dc.source.endpage601
refterms.dateFOA2021-02-11T21:32:53Z


Files in this item

Thumbnail
Name:
3890-3561-1-PB.pdf
Size:
1.125Mb
Format:
PDF
Download

This item appears in the following Collection(s)

Show simple item record