The stable isotope setting of Australopithecus sediba at Malapa, South Africa.

Show simple item record Holt, E. Dirks, P. PLaczek, C. Berger, L.R. 2017-02-08T14:25:40Z 2017-02-08T14:25:40Z 2016-07
dc.identifier.citation Holt, E. et al. 2016. The stable isotope setting of Australopithecus sediba at Malapa, South Africa. South african Journal of Science 112 (7/8): Article #2015-0351 en_ZA
dc.identifier.issn 0038-2353 (Print)
dc.identifier.issn 1996-7489 (Online)
dc.description.abstract We report delta C-13 and delta O-18 results from carbonate-cemented cave sediments at Malapa in South Africa. The sediments were deposited during a short-period magnetic reversal at 1.977±0.003 Ma, immediately preceding deposition of Facies D sediments that contain the type fossils of Australopithecus sediba. Values of delta C-13 range between -5.65 and -2.09 with an average of -4.58±0.54% (Vienna Pee Dee Belemnite, VPDB) and values of delta O-18 range between -6.14 and -3.84 with an average of -4.93±0.44% (VPDB). Despite signs of diagenetic alteration from metastable aragonite to calcite, the Malapa isotope values are similar to those obtained in two previous studies in South Africa for the same relative time period. Broadly, the Malapa delta C-13 values provide constraints on the palaeovegetation at Malapa. Because of the complex nature of the carbonate cements and mixed mineralogy in the samples, our estimates of vegetation type (C4-dominant) must be regarded as preliminary only. However, the indication of a mainly C4 landscape is in contrast to the reported diet of A. sediba, and suggests a diverse environment involving both grassland and riparian woodland. en_ZA
dc.language.iso en en_ZA
dc.publisher Academic of Science of South Africa (ASSAf) en_ZA
dc.rights © 2016. The Author(s). Published under a Creative Commons Attribution Licence en_ZA
dc.subject palaeovegetation en_ZA
dc.subject carbonatecemented en_ZA
dc.subject cave sediments en_ZA
dc.subject palaeoclimate en_ZA
dc.title The stable isotope setting of Australopithecus sediba at Malapa, South Africa. en_ZA
dc.type Article en_ZA
dc.journal.volume 112 en_ZA
dc.journal.title South African Journal of Science en_ZA
dc.description.librarian NCS2016 en_ZA
dc.citation.doi 10.17159/sajs.2016/20150351 en_ZA
dc.citation.epage 9 en_ZA
dc.citation.issue 7/8 en_ZA
dc.citation.spage 1 en_ZA

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