A
Allan R. Chivas
Researcher at University of Adelaide
Publications - 182
Citations - 11691
Allan R. Chivas is an academic researcher from University of Adelaide. The author has contributed to research in topics: Quaternary & Porphyry copper deposit. The author has an hindex of 57, co-authored 178 publications receiving 10883 citations. Previous affiliations of Allan R. Chivas include Australian National University & Monash University.
Papers
More filters
Journal ArticleDOI
Geochemical and isotopic systematics in carbonatites and implications for the evolution of ocean-island sources
TL;DR: Geochemical and isotopic data for 13 carbonatites from Africa, Australia, Brazil, Europe and the United States have been reported in this paper, with a range of initial Ba, Th, LREE, Sr and low Cs, Rb, K and HREE abundances.
Journal ArticleDOI
Rapid emergence of life shown by discovery of 3,700-million-year-old microbial structures
Allen P. Nutman,Allen P. Nutman,Vickie C. Bennett,Clark R.L. Friend,Martin J. Van Kranendonk,Allan R. Chivas +5 more
TL;DR: Evidence for ancient life from a newly exposed outcrop of 3,700-Myr-old metacarbonate rocks in the ISB that contain 1–4-cm-high stromatolites demonstrates the establishment of shallow marine carbonate production with biotic CO2 sequestration by 3-700 million years ago, near the start of Earth’s sedimentary record.
Journal ArticleDOI
A high-resolution Sr/Ca and δ18O coral record from the Great Barrier Reef, Australia, and the 1982–1983 El Niño
TL;DR: In this article, a high-resolution (near weekly) Sr/Ca and oxygen isotopic record is presented for a coral from the Pandora Reef in the Great Barrier Reef (GBR) of Australia during the period 1978 to 1984.
Journal ArticleDOI
Biological Controls on Coral Sr/Ca and δ18O Reconstructions of Sea Surface Temperatures
TL;DR: Experimental studies of the effect of growth rate and the magnitude of intraspecific differences indicate that biological controls on coral skeletal strontium/calcium uptake have been underestimated, calling into question the reliability of strontum/cal calcium-based SST reconstructions.
Journal ArticleDOI
A 16-Ma record of paleodiet using carbon and oxygen isotopes in fossil teeth from Pakistan
Jay Quade,Thure E. Cerling,John C. Barry,Michèle E. Morgan,David Pilbeam,Allan R. Chivas,Julia A. Lee-Thorp,Nikolaas J. van der Merwe +7 more
TL;DR: The Siwalik Sequence of northern Pakistan contains a 16-Ma record of carbonate and fossil teeth from which a record of paleovegetation can potentially be reconstructed and compared.