Ariel Anbar

About

The Anbarlab at Arizona State University is a diverse group of graduate and undergraduate students, postdocs, and research scientists, committed to exploring our world and developing applied solutions to the challenges we face. We hail from the fields of geology, chemistry, forensic science, and education.

Research topics

• Geology
• Earth science
• Paleontology
• Astrobiology
• Computer Science
• Biology
• Geography
• Geochemistry
• Environmental chemistry
• Sociology

Selected publications

• Uranium isotopes in marine carbonates as a global ocean paleoredox proxy: A critical review

  Geochimica et Cosmochimica Acta · 2020 · 108 citations

  Senior authorCorresponding
  DOI

• Earth's First Redox Revolution

  Annual Review of Earth and Planetary Sciences · 2021 · 96 citations

  Senior authorCorresponding

  The rise of molecular oxygen (O 2 ) in the atmosphere and oceans was one of the most consequential changes in Earth's history. While most research focuses on the Great Oxidation Event (GOE) near the start of the Proterozoic Eon—after which O 2 became irreversibly greater than 0.1% of the atmosphere—many lines of evidence indicate a smaller oxygenation event before this time, at the end of the Archean Eon (2.5 billion years ago). Additional evidence of mild environmental oxidation—probably by O 2…

  DOI

• Two distinct episodes of marine anoxia during the Permian-Triassic crisis evidenced by uranium isotopes in marine dolostones

  Geochimica et Cosmochimica Acta · 2020 · 81 citations

  Senior authorCorresponding
  DOI

• Mineral Dust and Iron Solubility: Effects of Composition, Particle Size, and Surface Area

  Atmosphere · 2020 · 56 citations

  There is significant iron deposition in the oceans, approximately 14–16 Tg annually from mineral dust aerosols, but only a small percentage (approx. 3%) of it is soluble and, thus, bioavailable. In this work, we examine the effect of mineralogy, particle size, and surface area on iron solubility in pure mineral phases to simulate atmospheric processing of mineral dust aerosols during transport. Pure iron-bearing minerals common to Saharan dust were partitioned into four size fractions (10–2.5, 2…

  DOI

• Mercury abundance and isotopic composition indicate subaerial volcanism prior to the end-Archean “whiff” of oxygen

  Proceedings of the National Academy of Sciences · 2021 · 55 citations

  sinks, followed by enhanced nutrient supply to the ocean from weathering of volcanic rocks causing increased biological productivity.

  PublisherOA PDFDOI

Recent grants

• Mercury Stable Isotopes as a Proxy of Photic Zone Euxinia

  NSF · $420k · 2020–2025

• Collaborative Research: Transition Metal Isotope Fractionation during Adsorption to Authigenic Oxides

  NSF · $300k · 2005–2009

• FESD Type I: The Dynamics of Earth System Oxygenation

  NSF · $4.8M · 2013–2020

Frequent coauthors

• Timothy W. Lyons

  114 shared

• Stephen J. Romaniello

  101 shared

• Gwyneth W. Gordon

  Arizona State University

  96 shared

• Gail Lee Arnold

  The University of Texas at El Paso

  87 shared

• Roger Buick

  University of Washington

  81 shared

• Alan J. Kaufman

  79 shared

• Brian Kendall

  University of Waterloo

  77 shared

• Tais W. Dahl

  University of Copenhagen

  68 shared

Labs

• AnbarlabPI

Awards & honors

• Fellow of the American Geophysical Union (AGU)
• Fellow of the Geological Society of America (GSA)
• Fellow of the Geochemical Society
• Fellow of the European Association of Geochemistry
• Howard Hughes Medical Institute Professor

Similar researchers at Arizona State University

• Leanna Archambaulth-26
• Madelaine Adelmanh-13
• Carole Basileh-11