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{{AfC submission|||ts=20210721165308|u=MethanoJen|ns=118}}
Ariel Anbar is an [[Isotope geochemistry|isotope geochemist]] and President’s Professor at [[Arizona State University]]. He has published over 140 refereed papers on topics ranging from the origins of Earth’s atmosphere to detecting life on other worlds to diagnosing human disease.
Ariel Anbar is an [[Isotope geochemistry|isotope geochemist]] and President’s Professor at [[Arizona State University]]. He has published over 140 refereed papers on topics ranging from the origins of Earth’s atmosphere to detecting life on other worlds to diagnosing human disease.


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== Education and career ==
== Education and career ==
Anbar received a A.B. in Geological Sciences and Chemistry from [[Harvard University]] in 1989. While at Harvard, he worked under the supervision of [[Heinrich Holland]] and conducted experiments that suggested the importance of photochemical oxidation in Archean oceans, especially as a possible source of manganese oxides before the [[Great Oxidation Event]]<ref>{{Cite journal|last=Anbar|first=A.D.|last2=Holland|first2=H.D.|date=1992|title=The photochemistry of manganese and the origin of banded iron formations|url=https://www.sciencedirect.com/science/article/abs/pii/001670379290346K|journal=Geochimica et Cosmochimica Acta|language=en|volume=56|issue=7|pages=2595–2603|doi=10.1016/0016-7037(92)90346-K|issn=0016-7037}}</ref>. He received a Ph.D. in Geochemistry from the [[California Institute of Technology]] in 1996, advised by [[Gerald J. Wasserburg|Gerald Wasserburg]], where he developed methods for ultra-sensitive determination of [[rhenium]] and [[iridium]] in seawater. He was on the faculty of the Department of Earth and Environmental Sciences at the [[University of Rochester]] from 1996 to 2004. Since 2004, he has been on the faculty in the School of Earth and Space Exploration and the School of Molecular Sciences at [[Arizona State University]].
Anbar received a A.B. in Geological Sciences and Chemistry from [[Harvard University]] in 1989. While at Harvard, he worked under the supervision of [[Heinrich Holland]] and conducted experiments that suggested the importance of photochemical oxidation in Archean oceans, especially as a possible source of manganese oxides before the [[Great Oxidation Event]].<ref>{{Cite journal|last=Anbar|first=A.D.|last2=Holland|first2=H.D.|date=1992|title=The photochemistry of manganese and the origin of banded iron formations|url=https://www.sciencedirect.com/science/article/abs/pii/001670379290346K|journal=Geochimica et Cosmochimica Acta|language=en|volume=56|issue=7|pages=2595–2603|doi=10.1016/0016-7037(92)90346-K|issn=0016-7037}}</ref>. He received a Ph.D. in Geochemistry from the [[California Institute of Technology]] in 1996, advised by [[Gerald J. Wasserburg|Gerald Wasserburg]], where he developed methods for ultra-sensitive determination of [[rhenium]] and [[iridium]] in seawater. He was on the faculty of the Department of Earth and Environmental Sciences at the [[University of Rochester]] from 1996 to 2004. Since 2004, he has been on the faculty in the School of Earth and Space Exploration and the School of Molecular Sciences at [[Arizona State University]].


== Research ==
== Research ==
Anbar's research group uses multi-collector [[inductively coupled plasma mass spectrometry]] (MC-ICP-MS) to study natural variations in the “non-traditional” stable isotope abundances of transition metals as biomarkers and as probes of ancient ocean oxygenation<ref>{{Cite journal|last=Anbar|first=Ariel D.|last2=Rouxel|first2=Olivier|date=2007|title=Metal Stable Isotopes in Paleoceanography|url=http://www.annualreviews.org/doi/10.1146/annurev.earth.34.031405.125029|journal=Annual Review of Earth and Planetary Sciences|language=en|volume=35|issue=1|pages=717–746|doi=10.1146/annurev.earth.34.031405.125029|issn=0084-6597}}</ref>. His group was the first to report natural fractionation of [[molybdenum]] isotopes<ref>{{Cite journal|last=Barling|first=J.|last2=Arnold|first2=G.L.|last3=Anbar|first3=A.D.|date=2001|title=Natural mass-dependent variations in the isotopic composition of molybdenum|url=https://www.sciencedirect.com/science/article/abs/pii/S0012821X01005143|journal=Earth and Planetary Science Letters|language=en|volume=193|issue=3-4|pages=447–457|doi=10.1016/S0012-821X(01)00514-3|issn=0012-821X}}</ref>, including discovered how and why molybdenum isotopes fractionate during adsorption to [[manganese]] oxides<ref>{{Cite journal|last=Barling|first=J.|last2=Anbar|first2=A.D.|date=2004|title=Molybdenum isotope fractionation during adsorption by manganese oxides|url=https://www.sciencedirect.com/science/article/abs/pii/S0012821X03006083|journal=Earth and Planetary Science Letters|language=en|volume=217|issue=3-4|pages=315–329|doi=10.1016/S0012-821X(03)00608-3|issn=0012-821X}}</ref>. This work provided a foundation for the use of [[molybdenum]] isotopes to study ancient ocean redox change<ref>{{Cite journal|last=Arnold|first=G. L.|last2=Anbar|first2=A. D.|last3=Barling|first3=J.|last4=Lyons|first4=T. W.|date=2004|title=Molybdenum Isotope Evidence for Widespread Anoxia in Mid-Proterozoic Oceans|url=https://science.sciencemag.org/content/304/5667/87|journal=Science|language=en|volume=304|issue=5667|pages=87–90|doi=10.1126/science.1091785|issn=0036-8075|pmid=15066776}}</ref>. Anbar and colleagues discovered a "whiff of oxygen" fifty million years before the [[Great Oxidation Event]]<ref>{{Cite journal|last=Anbar|first=Ariel D.|last2=Duan|first2=Yun|last3=Lyons|first3=Timothy W.|last4=Arnold|first4=Gail L.|last5=Kendall|first5=Brian|last6=Creaser|first6=Robert A.|last7=Kaufman|first7=Alan J.|last8=Gordon|first8=Gwyneth W.|last9=Scott|first9=Clinton|last10=Garvin|first10=Jessica|last11=Buick|first11=Roger|date=2007|title=A Whiff of Oxygen Before the Great Oxidation Event?|url=https://science.sciencemag.org/content/317/5846/1903|journal=Science|language=en|volume=317|issue=5846|pages=1903–1906|doi=10.1126/science.1140325|issn=0036-8075|pmid=17901330}}</ref>.
Anbar's research group uses multi-collector [[inductively coupled plasma mass spectrometry]] (MC-ICP-MS) to study natural variations in the “non-traditional” stable isotope abundances of transition metals as biomarkers and as probes of ancient ocean oxygenation<ref>{{Cite journal|last=Anbar|first=Ariel D.|last2=Rouxel|first2=Olivier|date=2007|title=Metal Stable Isotopes in Paleoceanography|url=http://www.annualreviews.org/doi/10.1146/annurev.earth.34.031405.125029|journal=Annual Review of Earth and Planetary Sciences|language=en|volume=35|issue=1|pages=717–746|doi=10.1146/annurev.earth.34.031405.125029|issn=0084-6597}}</ref>. His group was the first to report natural fractionation of [[molybdenum]] isotopes<ref>{{Cite journal|last=Barling|first=J.|last2=Arnold|first2=G.L.|last3=Anbar|first3=A.D.|date=2001|title=Natural mass-dependent variations in the isotopic composition of molybdenum|url=https://www.sciencedirect.com/science/article/abs/pii/S0012821X01005143|journal=Earth and Planetary Science Letters|language=en|volume=193|issue=3-4|pages=447–457|doi=10.1016/S0012-821X(01)00514-3|issn=0012-821X}}</ref>, including discovered how and why molybdenum isotopes fractionate during adsorption to [[manganese]] oxides<ref>{{Cite journal|last=Barling|first=J.|last2=Anbar|first2=A.D.|date=2004|title=Molybdenum isotope fractionation during adsorption by manganese oxides|url=https://www.sciencedirect.com/science/article/abs/pii/S0012821X03006083|journal=Earth and Planetary Science Letters|language=en|volume=217|issue=3-4|pages=315–329|doi=10.1016/S0012-821X(03)00608-3|issn=0012-821X}}</ref>. This work provided a foundation for the use of [[molybdenum]] isotopes to study ancient ocean redox change<ref>{{Cite journal|last=Arnold|first=G. L.|last2=Anbar|first2=A. D.|last3=Barling|first3=J.|last4=Lyons|first4=T. W.|date=2004|title=Molybdenum Isotope Evidence for Widespread Anoxia in Mid-Proterozoic Oceans|url=https://science.sciencemag.org/content/304/5667/87|journal=Science|language=en|volume=304|issue=5667|pages=87–90|doi=10.1126/science.1091785|issn=0036-8075|pmid=15066776}}</ref>. Anbar and colleagues discovered a "whiff of oxygen" fifty million years before the [[Great Oxidation Event]]<ref>{{Cite journal|last=Anbar|first=Ariel D.|last2=Duan|first2=Yun|last3=Lyons|first3=Timothy W.|last4=Arnold|first4=Gail L.|last5=Kendall|first5=Brian|last6=Creaser|first6=Robert A.|last7=Kaufman|first7=Alan J.|last8=Gordon|first8=Gwyneth W.|last9=Scott|first9=Clinton|last10=Garvin|first10=Jessica|last11=Buick|first11=Roger|date=2007|title=A Whiff of Oxygen Before the Great Oxidation Event?|url=https://science.sciencemag.org/content/317/5846/1903|journal=Science|language=en|volume=317|issue=5846|pages=1903–1906|doi=10.1126/science.1140325|issn=0036-8075|pmid=17901330}}</ref>


Anbar's group has also worked on [[iron]] isotopes, demonstrating abiotic fractionation in low and high temperature systems<ref>{{Cite journal|last=Anbar|first=A. D.|last2=Roe|first2=J. E.|last3=Barling|first3=J.|last4=Nealson|first4=K. H.|date=2000|title=Nonbiological Fractionation of Iron Isotopes|url=https://science.sciencemag.org/content/288/5463/126|journal=Science|language=en|volume=288|issue=5463|pages=126–128|doi=10.1126/science.288.5463.126|issn=0036-8075|pmid=10753114}}</ref>. They have also worked to develop the [[uranium]] isotope system as a paleoredox proxy, opening up the [[carbonate]] sedimentary record for investigation of changes in ocean oxygenation and their linkages to evolution<ref>{{Cite journal|last=Romaniello|first=S.J.|last2=Herrmann|first2=A.D.|last3=Anbar|first3=A.D.|date=2013|title=Uranium concentrations and 238U/235U isotope ratios in modern carbonates from the Bahamas: Assessing a novel paleoredox proxy|url=https://www.sciencedirect.com/science/article/abs/pii/S0009254113004385|journal=Chemical Geology|language=en|volume=362|pages=305–316|doi=10.1016/j.chemgeo.2013.10.002|issn=0009-2541}}</ref>.
Anbar's group has also worked on [[iron]] isotopes, demonstrating abiotic fractionation in low and high temperature systems<ref>{{Cite journal|last=Anbar|first=A. D.|last2=Roe|first2=J. E.|last3=Barling|first3=J.|last4=Nealson|first4=K. H.|date=2000|title=Nonbiological Fractionation of Iron Isotopes|url=https://science.sciencemag.org/content/288/5463/126|journal=Science|language=en|volume=288|issue=5463|pages=126–128|doi=10.1126/science.288.5463.126|issn=0036-8075|pmid=10753114}}</ref>. They have also worked to develop the [[uranium]] isotope system as a paleoredox proxy, opening up the [[carbonate]] sedimentary record for investigation of changes in ocean oxygenation and their linkages to evolution<ref>{{Cite journal|last=Romaniello|first=S.J.|last2=Herrmann|first2=A.D.|last3=Anbar|first3=A.D.|date=2013|title=Uranium concentrations and 238U/235U isotope ratios in modern carbonates from the Bahamas: Assessing a novel paleoredox proxy|url=https://www.sciencedirect.com/science/article/abs/pii/S0009254113004385|journal=Chemical Geology|language=en|volume=362|pages=305–316|doi=10.1016/j.chemgeo.2013.10.002|issn=0009-2541}}</ref>.
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== References ==
== References ==
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<references />

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[[:Category:Living people]]
[[Category:American geochemists]]
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[[Category:Living people]]
[[Category:Harvard University alumni]]
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[[Category:Living people]]

Revision as of 17:14, 21 July 2021

Ariel Anbar is an isotope geochemist and President’s Professor at Arizona State University. He has published over 140 refereed papers on topics ranging from the origins of Earth’s atmosphere to detecting life on other worlds to diagnosing human disease.

Ariel D. Anbar
Alma materHarvard University, California Institute of Technology
AwardsArthur L. Day Medal (2020)
Scientific career
Doctoral advisorGerald J. Wasserburg
Doctoral studentsJennifer B. Glass
Websitehttps://www.anbarlab.org/

Education and career

Anbar received a A.B. in Geological Sciences and Chemistry from Harvard University in 1989. While at Harvard, he worked under the supervision of Heinrich Holland and conducted experiments that suggested the importance of photochemical oxidation in Archean oceans, especially as a possible source of manganese oxides before the Great Oxidation Event.[1]. He received a Ph.D. in Geochemistry from the California Institute of Technology in 1996, advised by Gerald Wasserburg, where he developed methods for ultra-sensitive determination of rhenium and iridium in seawater. He was on the faculty of the Department of Earth and Environmental Sciences at the University of Rochester from 1996 to 2004. Since 2004, he has been on the faculty in the School of Earth and Space Exploration and the School of Molecular Sciences at Arizona State University.

Research

Anbar's research group uses multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) to study natural variations in the “non-traditional” stable isotope abundances of transition metals as biomarkers and as probes of ancient ocean oxygenation[2]. His group was the first to report natural fractionation of molybdenum isotopes[3], including discovered how and why molybdenum isotopes fractionate during adsorption to manganese oxides[4]. This work provided a foundation for the use of molybdenum isotopes to study ancient ocean redox change[5]. Anbar and colleagues discovered a "whiff of oxygen" fifty million years before the Great Oxidation Event[6]

Anbar's group has also worked on iron isotopes, demonstrating abiotic fractionation in low and high temperature systems[7]. They have also worked to develop the uranium isotope system as a paleoredox proxy, opening up the carbonate sedimentary record for investigation of changes in ocean oxygenation and their linkages to evolution[8].

Anbar has also been involved in development of method to use calcium isotopes to study bone disease.[9][10]

Leadership

Anbar directed the Astrobiology Program at Arizona State University from 2009 to 2015. He served as President-Elect and President of the Biogeosciences Section of the American Geophysical Union from 2015 to 2019. He currently directs the Center for Education Through Exploration at Arizona State University, which is reinventing digital learning around curiosity, exploration, and discovery.

Awards

Anbar is a Fellow of the Geological Society of America, the Geochemical Society, and the European Association of Geochemistry. In 2002, he was awarded the Young Scientist Award (Donath Medal) from the Geological Society of America. In 2015, he was appointed a Howard Hughes Medical Institute Professor in recognition of his work in digital learning innovation. In 2017, he was named one of 10 “teaching innovators” by the Chronicle of Higher Education[11]. He was the Endowed Biogeochemistry Lecturer at the Goldschmidt Geochemistry Conference in 2017 and received the Samuel Epstein Science Innovation Award from the European Association of Geochemistry in 2019. He received the the Arthur L. Day Medal from the Geological Society of America in 2020. He is a Distinguished Sustainability Scholar in the Julie Ann Wrigley Global Institute of Sustainability at Arizona State University.

References

  1. ^ Anbar, A.D.; Holland, H.D. (1992). "The photochemistry of manganese and the origin of banded iron formations". Geochimica et Cosmochimica Acta. 56 (7): 2595–2603. doi:10.1016/0016-7037(92)90346-K. ISSN 0016-7037.
  2. ^ Anbar, Ariel D.; Rouxel, Olivier (2007). "Metal Stable Isotopes in Paleoceanography". Annual Review of Earth and Planetary Sciences. 35 (1): 717–746. doi:10.1146/annurev.earth.34.031405.125029. ISSN 0084-6597.
  3. ^ Barling, J.; Arnold, G.L.; Anbar, A.D. (2001). "Natural mass-dependent variations in the isotopic composition of molybdenum". Earth and Planetary Science Letters. 193 (3–4): 447–457. doi:10.1016/S0012-821X(01)00514-3. ISSN 0012-821X.
  4. ^ Barling, J.; Anbar, A.D. (2004). "Molybdenum isotope fractionation during adsorption by manganese oxides". Earth and Planetary Science Letters. 217 (3–4): 315–329. doi:10.1016/S0012-821X(03)00608-3. ISSN 0012-821X.
  5. ^ Arnold, G. L.; Anbar, A. D.; Barling, J.; Lyons, T. W. (2004). "Molybdenum Isotope Evidence for Widespread Anoxia in Mid-Proterozoic Oceans". Science. 304 (5667): 87–90. doi:10.1126/science.1091785. ISSN 0036-8075. PMID 15066776.
  6. ^ Anbar, Ariel D.; Duan, Yun; Lyons, Timothy W.; Arnold, Gail L.; Kendall, Brian; Creaser, Robert A.; Kaufman, Alan J.; Gordon, Gwyneth W.; Scott, Clinton; Garvin, Jessica; Buick, Roger (2007). "A Whiff of Oxygen Before the Great Oxidation Event?". Science. 317 (5846): 1903–1906. doi:10.1126/science.1140325. ISSN 0036-8075. PMID 17901330.
  7. ^ Anbar, A. D.; Roe, J. E.; Barling, J.; Nealson, K. H. (2000). "Nonbiological Fractionation of Iron Isotopes". Science. 288 (5463): 126–128. doi:10.1126/science.288.5463.126. ISSN 0036-8075. PMID 10753114.
  8. ^ Romaniello, S.J.; Herrmann, A.D.; Anbar, A.D. (2013). "Uranium concentrations and 238U/235U isotope ratios in modern carbonates from the Bahamas: Assessing a novel paleoredox proxy". Chemical Geology. 362: 305–316. doi:10.1016/j.chemgeo.2013.10.002. ISSN 0009-2541.
  9. ^ Morgan, Jennifer L. L.; Skulan, Joseph L.; Gordon, Gwyneth W.; Romaniello, Stephen J.; Smith, Scott M.; Anbar, Ariel D. (2012). "Rapidly assessing changes in bone mineral balance using natural stable calcium isotopes". Proceedings of the National Academy of Sciences. 109 (25): 9989–9994.
  10. ^ "Stable isotopes offer novel methods of disease detection". www.earthmagazine.org. Retrieved 2021-07-21.
  11. ^ "Designing an Online Science Course With Video-Game Appeal". www.chronicle.com. 2017. Retrieved 2021-07-21.{{cite web}}: CS1 maint: url-status (link)
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