Dr Aubrey Zerkle

Dr Aubrey Zerkle
Reader; Director of Postgraduate Research


 

I am a biogeochemist and a PI of the Peter James Clark Centre for Philosophical Geobiology. My primary interests are in the early Earth and extraterrestrial environments.

Research in my group focuses on understanding the co-evolution of life with planetary environments over geologic timescales. We utilize a multi-disciplinary approach, including stable isotope geochemistry, microbiology, trace element and nutrient analyses, to examine these interactions and possible feedbacks in modern and paleo-environments. Current research projects revolve around three broad areas:

1. Investigating feedbacks between the geosphere, atmosphere, and biosphere during important transitions in Earth history, including the Great Oxidation Event, Punctuated Haze Events, and mass extinction events;

2. Examining biogeochemical cycling in extreme environments that act as modern "analogues" to ancient Earth and exoplanetary systems (e.g., euxinic and acidic environments);

3. Establishing and evaluating stable isotope biosignatures for microbial activity, on Earth and beyond.

source: symbiosis

 

Recent publications


31  (of 31 published available) for az29. (source: University of St Andrews PURE)
Please click title of any item for full details.

2018 (13/11)
Philosophical Transactions of the Royal Society. A, Mathematical, Physical and Engineering Sciences
vol.376 
(Review article)
2018 (5/11)
Chemical Geology
vol.499 pp.151-164
(Article)
Multiple sulphur isotope records tracking basinal and global processes in the 1.98 Ga Zaonega Formation, NW Russia
Kart Paiste, Aivo Lepland, Aubrey Lea Zerkle, Kalle Kirsimae, Gareth Izon, Neel Patel, Fiona McLean, T. Kreitsmann, K Mand, T Bui, A Romashkin, D Rychanchik, Tony Prave 
Keywords: Paleoproterozoic, Zaonega Formation, Sulphur cycle, Carbon cycle, Great Oxidation Event

Astronomy and Astrophysics Review
vol.26 
(Review article)
Origin and evolution of the atmospheres of early Venus, Earth and Mars
Helmut Lammer, Aubrey Lea Zerkle, Stefanie Gebauer, Nicola Tosi, Lena Noack, Manuel Scherf, Pilat-Lohinger Elke, Manuel Gudel, John Lee Grenfell, Mareike Godolt, Athanasia Nikolaou 
Keywords: Primordial atmospheres, Secondary atmospheres, Atmospheric evolution , Early Earth, Venus, Mars, Habitability
2018 (22/3)
Science

(Article)
Two-billion-year-old evaporites capture Earth's great oxidation
Clara Blättler, Mark Claire, Tony Prave, Aubrey Lea Zerkle, Matthew Robert Warke 
2017 (28/3)
Proceedings of the National Academy of Sciences of the United States of America
vol.114 pp.2571-2579
(Article)
Biological regulation of atmospheric chemistry en route to planetary oxygenation
Gareth Izon, Aubrey Lea Zerkle, Kenneth Williford, James Farquhar, Simon Poulton, Mark Claire 
2017 (1/11)
Palaeogeography, Palaeoclimatology, Palaeoecology
vol.485 pp.210-223
(Article)
2017 (23/2)
Nature
vol.542 pp.465-467
(Letter)
Onset of the aerobic nitrogen cycle during the Great Oxidation Event
Aubrey Lea Zerkle, Simon W Poulton, Robert J Newton, Mark Claire, Andrey Bekker, Christopher K Junium 
2017 (5)
Geobiology
vol.15 pp.353-365
(Article)
Sulphur cycling in a Neoarchean microbial mat
Nicolette R Meyer, Aubrey Lea Zerkle, David A Fike 
2017 (5)
Geobiology
vol.15 pp.343-352
(Article)
The geobiological nitrogen cycle
Aubrey Lea Zerkle, Sami Mikhail 
2016 (15/1)
Geochimica et Cosmochimica Acta
vol.173 pp.373-386
(Article)
2015 (1/12)
Elements
vol.11 pp.415-421
(Article)
2015 (1/12)
Earth and Planetary Science Letters
vol.431 pp.264-273
(Article)
Multiple oscillations in Neoarchaean atmospheric chemistry
Gareth Izon, Aubrey Lea Zerkle, Yadviga Zhelezinskaya, James Farquhar, Robert J. Newton, Simon W. Poulton, Jennifer L. Eigenbrode, Mark Claire 
Keywords: Neoarchaean, Multiple sulphur isotopes, MIF, Methane, Hydrocarbon haze, Atmospheric oxygen
2014
vol.6: The Atmosphere - History pp.91-138
(Chapter)
2014
Science
vol.346 pp.735-739
(Article)
Sulfate was a trace constituent of Archean seawater
Sean A. Crowe, Guillaume Paris, Sergei Katsev, CarriAyne Jones, Sang-Tae Kim, Aubrey Lea Zerkle, Sulung Nomosatryo, David A. Fowle, Jess F. Adkins, Alex L. Sessions, James Farquhar, Donald E. Canfield 
2013 (29/10)
Proceedings of the National Academy of Sciences of the United States of America
vol.110 pp.17638-17643
(Article)
Pathways for Neoarchean pyrite formation constrained by mass-independent sulfur isotopes
James Farquhar, John Cliff, Aubrey Lea Zerkle, Alexey Kamyshny, Simon W. Poulton, Mark Claire, David Adams, Brian Harms 
2012 (5)
Nature Geoscience
vol.5 pp.359-363
(Article)
2011
MARINE CHEMISTRY
vol.127 pp.144-154
(Article)
Biogeochemical sulfur cycling in the water column of a shallow stratified sea-water lake: Speciation and quadruple sulfur isotope composition
Alexey Kamyshny, Aubrey Lea Zerkle, Zahra Mansaray, Irena Ciglenecki, Elvira Bura-Nakic, James Farquhar, Timothy Ferdelman 
2011
Photosynthesis Research
vol.107 pp.11-36
(Review article)
Geological constraints on the origin of oxygenic photosynthesis
James Farquhar, Aubrey Lea Zerkle, Andrey Bekker 
2010
Geology
vol.38 pp.415-418
(Article)
2010
Chemical Geology
vol.279 pp.134-144
(Article)
Molybdenum isotope, multiple sulfur isotope, and redox-sensitive element behavior in early Pleistocene Mediterranean sapropels
Kathleen Scheiderich, Aubrey Lea Zerkle, George Helz, James Farquhar, Richard Walker 
2010
Geochimica et Cosmochimica Acta
vol.74 pp.6764-6778
(Article)
Stable sulfur isotopes in the water column of the Cariaco Basin
Xiaona Li, William Gilhooly, Aubrey Lea Zerkle, Tim Lyons, James Farquhar, J Werne, R Varela, Mary Scranton 
2010 (1/9)
Geochimica et Cosmochimica Acta
vol.74 pp.4953-4970
(Article)
2010
The Journal of Geology
vol.118 pp.577-599
(Article)
2008
Journal of Geophysical Research
vol.113 
(Article)
Production of 15N-depleted biomass during cyanobacterial N2-fixation at high Fe concentrations
Aubrey Lea Zerkle, Christopher Junium, Donald Canfield, Christopher House 
2006
Geobiology
vol.4 pp.285-297
(Article)
Metal limitation of cyanobacterial N2 fixation and implications for the Precambrian nitrogen cycle
Aubrey Lea Zerkle, Christopher House, Raymond Cox, Donald Canfield 
2005
American Journal of Science
vol.305 pp.467-502
(Article)
Biogeochemical signatures through time as inferred from whole microbial genomes
Aubrey Lea Zerkle, Christopher House, Susan Brantley 
2002
Sedimentology
vol.49 pp.117-138
(Article)
Cathodoluminescence petrography and isotope geochemistry of KT impact ejecta deposited 360km from the Chicxulub crater, at Albion Island, Belize
Bruce Fouke, Aubrey Lea Zerkle, Alvarez Walter, Kevin Pope, A Ocampo, R Wachtman, J Grajales Nishimura, P Claeys, Anke Fischer 
2002
Applied and Environmental Microbiology
vol.68 pp.2214-2228
(Article)

Contact Details:

Dr Aubrey Zerkle
Irvine Building
University of St Andrews
North Street
St Andrews
KY16 9AL
Fife
UK

tel: +44 01334 464949
fax: +44 01334 463949
room: 423 Irvine (office), D2-D4 Bute (labs)
email: az29@st-andrews.ac.uk

Related:

research@st-andrews

Scottish Oceans Institute
School of Earth and Environmental Sciences
STAIG
Centre for Exoplanet Science

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