AlanJKaufmanMD

PubMed

• 5 citations
  Transient marine euxinia at the end of the terminal Cryogenian glaciation
  Xianguo （郎咸国） Lang, Bing Shen, Yongbo Peng, Shuhai Xiao, Chuanming （周传明） Zhou, Huiming Bao, Alan J. Kaufman, Kangjun Huang, Peter W. Crockford, Yonggang Liu, Wenbo Tan...> ;Nature Communications. 2018 Aug 1
• 20 citations
  Extensive marine anoxia during the terminal Ediacaran Period
  Feifei Zhang, Shuhai Xiao, Brian Kendall, Stephen J. Romaniello, Huan Cui, Michael Meyer, Geoffrey J. Gilleaudeau, Alan J. Kaufman, Ariel D. Anbar> ;Science Advances. 2018 Jun 1
• 12 citations
  Environmental context for the terminal Ediacaran biomineralization of animals.
  Huan Cui, Alan J. Kaufman, Shuhai Xiao, Sara Peek, Hansheng Cao, Xiao Min, Yaoping Cai, Zak Siegel, Xiao-Ming Liu, Yongbo Peng, James D. Schiffbauer, Aaron J. Martin> ;Geobiology. 2016 Jul 1
• 34 citations
  A unifying model for Neoproterozoic–Palaeozoic exceptional fossil preservation through pyritization and carbonaceous compression
  James D. Schiffbauer, Shuhai Xiao, Yaoping Cai, Adam F. Wallace, Hong Hua, Jerry L. Hunter, Huifang Xu, Yongbo Peng, Alan J. Kaufman> ;Nature Communications. 2014 Dec 17
• 28 citations
  Large sulfur isotope fractionations associated with Neoarchean microbial sulfate reduction
  Iadviga Zhelezinskaia, Alan J. Kaufman, James Farquhar, John B. Cliff> ;Science. 2014 Nov 7
• 19 citations
  Evidence of magnetic isotope effects during thermochemical sulfate reduction
  Harry Oduro, Brian Harms, Herman O. Sintim, Alan J. Kaufman, George D. Cody, James Farquhar> ;Proceedings of the National Academy of Sciences of the United States of America. 2011 Oct 25
• 66 citations
  Isotopic evidence for an aerobic nitrogen cycle in the latest Archean.
  Jessica Garvin, Roger Buick, Ariel D. Anbar, Gail Lee Arnold, Alan J. Kaufman> ;Science. 2009 Feb 20
• 65 citations
  Pulsed oxidation and biological evolution in the Ediacaran Doushantuo Formation
  Kathleen A. McFadden, Jing Huang, Xuelei Chu, Ganqing Jiang, Alan J. Kaufman, Chuanming Zhou, Xunlai Yuan, Shuhai Xiao> ;Proceedings of the National Academy of Sciences of the United States of America. 2008 Mar 4
• Palaeoclimate: slush find.
  Alan J. Kaufman> ;Nature. 2007 Dec 6
• 59 citations
  Isotopic evidence for Mesoarchaean anoxia and changing atmospheric sulphur chemistry
  James Farquhar, Marc Peters, David T. Johnston, Harald Strauss, Andrew L. Masterson, Uwe Wiechert, Alan J. Kaufman> ;Nature. 2007 Oct 11
• 74 citations
  Late Archean Biospheric Oxygenation and Atmospheric Evolution
  Alan J. Kaufman, David T. Johnston, James Farquhar, Andrew L. Masterson, Timothy W. Lyons, Steve Bates, Ariel D. Anbar, Gail Lee Arnold, Jessica Garvin, Roger Buick> ;Science. 2007 Sep 28
• 225 citations
  A Whiff of Oxygen Before the Great Oxidation Event
  Ariel D. Anbar, Yun Duan, Timothy W. Lyons, Gail Lee Arnold, Brian Kendall, Robert A. Creaser, Alan J. Kaufman, Gwyneth W. Gordon, C. Scott, Jessica Garvin, Roger Buick> ;Science. 2007 Sep 28
• 9 citations
  Ultrastructural and Geochemical Characterization of Archean–Paleoproterozoic Graphite Particles: Implications for Recognizing Traces of Life in Highly Metamorphosed Rocks
  James D. Schiffbauer, Leiming Yin, Robert J. Bodnar, Alan J. Kaufman, Fanwei Meng, Jie Hu, Bing Shen, Xunlai Yuan, Huiming Bao, Shuhai Xiao> ;Astrobiology. 2007 Aug 27
• 48 citations
  Active Microbial Sulfur Disproportionation in the Mesoproterozoic
  David T. Johnston, Boswell A. Wing, James Farquhar, Alan J. Kaufman, Harald Strauss, Timothy W. Lyons, Linda C. Kah, Donald E. Canfield> ;Science. 2005 Dec 2
• 19 citations
  Biomarker evidence for photosynthesis during neoproterozoic glaciation.
  A. N. Olcott, Alex L. Sessions, Frank A. Corsetti, Alan J. Kaufman, Tolentino Flavio de Oliviera> ;Science. 2005 Oct 21
• 34 citations
  High CO2 levels in the Proterozoic atmosphere estimated from analyses of individual microfossils.
  Alan J. Kaufman, Shuhai Xiao> ;Nature. 2003 Sep 18
• 18 citations
  A composite reference section for terminal proterozoic strata of southern Namibia.
  Beverly Z. Saylor, Alan J. Kaufman, John P. Grotzinger, Frank Urban> ;Journal of Sedimentary Research. Section A, Sedimentary Petrology and Processes. 1998 Nov 1
• 30 citations
  Isotopes, Ice Ages, and Terminal Proterozoic Earth History
  Alan J. Kaufman, Andrew H. Knoll, Guy M. Narbonne> ;Proceedings of the National Academy of Sciences of the United States of America. 1997 Jun 24
• 12 citations
  Integrated chronostratigraphy of Proterozoic-Cambrian boundary beds in the western Anabar region, northern Siberia.
  Alan J. Kaufman, Andrew H. Knoll, M. A. Semikhatov, John P. Grotzinger, Stein B. Jacobsen, William Adams> ;Geological Magazine. 1996 Sep 1
• 4 citations
  Sizing up the sub-Tommotian unconformity in Siberia
  Andrew H. Knoll, Alan J. Kaufman, M. A. Semikhatov, John P. Grotzinger, William Adams> ;Geology. 1995 Dec 1
• 9 citations
  The carbon-isotopic composition of Proterozoic carbonates: Riphean successions from northwestern Siberia (Anabar Massif, Turukhansk Uplift).
  Andrew H. Knoll, Alan J. Kaufman, M. A. Semikhatov> ;American Journal of Science. 1995 Jun 1
• 45 citations
  Neoproterozoic variations in the C-isotopic composition of seawater: stratigraphic and biogeochemical implications.
  Alan J. Kaufman, Andrew H. Knoll> ;Precambrian Research. 1995 May 1
• 17 citations
  Integrated approaches to terminal Proterozoic stratigraphy: an example from the Olenek Uplift, northeastern Siberia
  Andrew H. Knoll, John P. Grotzinger, Alan J. Kaufman, Petr Kolosov> ;Precambrian Research. 1995 May 1
• 19 citations
  Integrated Chemostratigraphy and Biostratigraphy of the Windermere Supergroup, Northwestern Canada: Implications for Neoproterozoic Correlations and the Early Evolutio...
  Guy M. Narbonne, Alan J. Kaufman, Andrew H. Knoll> ;Geological Society of America Bulletin. 1994 Oct 1
• 16 citations
  Biostratigraphic and chemostratigraphic correlation of Neoproterozoic sedimentary successions: upper Tindir Group, northwestern Canada, as a test case.
  Alan J. Kaufman, Andrew H. Knoll, Stanley M. Awramik> ;Geology. 1992 Feb 1
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