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Education

2019
Princeton University, Princeton, NJ
Ph.D., Geosciences
Thesis: Reconstructions of Ediacaran putative biomineralizers via a novel serial grinding and imaging technique
Advisor(s): Adam Maloof
2011
Cornell University, Ithaca, NY
B.Arch.
Thesis: Reclaiming the old Union Carbide factory site in Bhopal, India
Advisor(s): Vincent Mulcahy and Mary Woods

Professional Experience

2023 -
Assistant Professor
University of Washington, Seattle, WA
2019 - 2022
Neukom Postdoctoral Fellow
Dartmouth College, Hanover, NH
2011 - 2013
Researcher
Situ Studio, Brooklyn, NY

Publications

In preparation

11.
Mehra, A., Busch, J., Strauss, J.V. 202x. A three-dimensional record of sea-level fall associated with the Hirnantian glaciation.
10.
Mehra, A., Eddy, M.P., Pamukcu, A., DesOrmeau, J.W., Maloof, A.C., and Schoene, B. 202x. Geochemical and textural evidence for efficient crystal settling in a large, silicic magma chamber.

In review

9.
Mehra, A., Keller, B., Tosca, N.J., McLennan, S.M., Zhang, T., Sperling, E., Strauss, J.V. 202x. Orogenic controls of the global sedimentary archive.

Published or in press

8.
Mehra, A., Howes, B., Manzuk, R., Samuels, B., and Maloof, A.C. 2022. A novel technique for producing three-dimensional data using serial sectioning and semi-automatic image classification, Microscopy and Microanalysis.
7.
Manzuk, R.A., Singh, D., Mehra, A., Geyman, C., Edmonsond, S., Maloof, A.C. 2022. An ultra-high spatial resolution multispectral macro-imager for petrography and paleontology, GSA Today.
6.
Crockford, P.W., Mehra, A., Domack, E., and Hoffman, P.F. 2021. An occurrence of radially symmetric sedimentary structures in the basal Ediacaran cap dolostone (Keilberg Member) of the Otavi Group, Communications of the Geological Survey of Namibia.
5.
Mehra, A., Keller, B., Zhang, T., Tosca, N.J., McLennan, S.M., SGP Authors, Strauss, J.V. 2021. Curation and analysis of global sedimentary geochemical data to inform Earth history, GSA Today, doi:10.1130/GSATG484A.1.
4.
Howes, B., Mehra, A., Maloof, A.C. 2021. Three‐dimensional morphometry of ooids in oolites: a new tool for more accurate and precise paleoenvironmental interpretation, Journal of Geophysical Research: Earth Surface, doi:10.1029/2020JF005601.
3.
Mehra, A., Watters, W.A., Grotzinger, J.P., Maloof, A.C. 2020. Three-dimensional reconstructions of the putative metazoan Namapoikia show that it was a microbial construction, Proceedings of the National Academy of Sciences of the United States of America, doi:10.1073/pnas.2009129117.
2.
MacLennan, S.A., Eddy, M.P., Merschat, A., Mehra, A., Crockford, P., Maloof, A.C., Southworth, S., Schoene, B. 2019. Geologic evidence for an icehouse Earth prior to the Sturtian global glaciation, Science Advances, doi: 10.1126/sciadv.aay6647.
1.
Mehra, A. and Maloof, A.C. 2018. A multiscale approach reveals that Cloudina aggregates are detritus and not in situ reef constructions, Proceedings of the National Academy of Sciences of the United States of America, doi:10.1073/pnas.1719911115.

Conference Proceedings

2020
Mehra, A., Keller, B., Zhang, T., Tosca, N.J., McLennan, S.M., Strauss, J.V., Processing data and incorporating uncertainties in large geochemical compilations. GSA Annual Meeting, October 2020.
2020
Mehra, A., Eddy, M.P., Pamukcu, A.S., Schoene, B., and Maloof A.C., A method for extracting 3D modal mineralogy and textural data from plutonic rocks. GSA Annual Meeting, October 2020.
2019
Mehra, A., Watters, W.A., Grotzinger, J.P., and Maloof A.C., Namapoikia, a baffling organism. Northeastern Geobiology Meeting, Amherst, MA, March 2019.
2018
Mehra, A., Geyman, E., and Maloof A.C., Analysis of channel morphology using high resolution, drone-derived imagery of the tidal flat at Triple Goose Creek, Andros Island. GSA Annual Meeting, Indianapolis, IN, November 2018.
2018
Mehra, A. and Maloof A.C., Three-dimensional reconstruction and morphological analysis of Namapoikia, a putative Ediacaran sponge fossil, using serial grinding and imaging. GSA Annual Meeting, Indianapolis, IN, November 2018.
2018
Bolton, H., Mehra, A., Geyman, E., and Maloof A.C., Three-dimensional reconstructions of holocene and Neoproterozoic oolites to measure porosity, permeability, and volume-shape evolution of ooids. GSA Annual Meeting, Indianapolis, IN, November 2018.
2018
Mehra, A. and Maloof A.C., Three dimensional reconstructions of the earliest biomineralizers. Northeastern Geobiology, WHOI, April 2018.
2017
Maloof A.C. and Mehra, A., Constraining the role of an Ediacaran biomineralizer using a multiscale methodology. GSA Annual Meeting, Seattle WA, October 2017.
2017
Mehra, A. and Maloof, A.C., Using serial grinding and imaging techniques to produce three-dimensional models of samples with weak density contrast. GSA Annual Meeting, Seattle WA, October 2017.
2016
Mehra, A. and Maloof, A.C., Digital reconstructions of Cloudina populations: an in-depth, three-dimensional study. AGU Fall Meeting, San Francisco CA, December 2016.
2013
Maloof, A.C., Samuels, B., Mehra, A., and Spatzier, A., An automated serial grinding, imaging and reconstruction instrument (GIRI) for digital modeling of samples with weak density contrasts. AGU Fall Meeting, San Francisco CA, December 2013.

Teaching

Fall 2021
Instructor
EARS 45: Field methods: Techniques of structural and stratigraphic analysis
Summer 2021
Instructor
EARS 272: Topics in historical geobiology
Spring 2020
Instructor
EARS 272: Topics in historical geobiology
Fall 2016
Teaching assistant
GEO 201: Measuring climate change: Methods in data analysis & scientific writing
Spring 2016
Teaching assistant
GEO 370: Sedimentology
Fall 2015
Teaching assistant
FRS 124: State of the Earth: Shifts & cycles
Fall 2014
Teaching assistant
GEO 201: Measuring climate change: Methods in data analysis & scientific writing

Funding

2020
Acquisition of fixed-wing unmanned aerial vehicles for training the next generation of scientists
CompX Faculty Grant
Mehra, A. (Lead PI, Dartmouth College) and Strauss, J.V. (Co-PI, Dartmouth College)
$40000
2019
Postdoctoral fellowship
Neukom Institute for Computational Science
Mehra, A. (Postdoctoral fellow, Dartmouth College)
$190000

Field Experience

2021
Salient Mountain, Canada [2 weeks]
Evolution of a late Ediacaran carbonate platform
2021
Nopah Range, California [2 weeks]
Architecture of an Ordovician paleokarst
2019
Nadaleen Mountain, Yukon, Canada [2 weeks]
Three-dimensional morphology of an early Paleozoic clinoform succession
2019
Silver Peak Range, Nevada [4 weeks]
Stratigraphic and morphological expression of Archaeocyathid buildups
2018
Blue Ridge, Virginia, USA [1 week]
Evidence for a Neoproterozoic glaciation
2017
North Cascades, Washington, USA [2 weeks]
Textural evidence for the presence of a fossilized magma chamber
2017
Andros Island, The Bahamas [1 week]
Morphology and hydrology of a tidal channel network
2016
Labrador, Canada [1 week]
Stratigraphic and environmental context of Cambrian Archaeocyathid reefs
2015
Salient Mountain, Canada [6 weeks]
Mapping, measuring, and sampling from a fossil-bearing Ediacaran stromatolite reef system
2014
Southern Namibia [8 weeks]
Describing aggregates of Cloudina, one of the earliest biomineralizing organisms

Awards and Honors

2021
A. Lincoln Washburn Award for Outstanding Mentoring
2018
Grand prize, AGU Data Visualization and Storytelling Contest
2018
Hanna Fellowship, Princeton University
2017
Runner-up, AGU Data Visualization and Storytelling Contest
2017
Fan Favorite, Princeton Research Day
2016
Runner-up, AGU Data Visualization and Storytelling Contest
2016
Arnold Guyot Teaching Award

Professional Activities

Co-organizer
Data Justice Seminar Series, Dartmouth College, Spring 2021
Co-organizer
2020 Northeast Geobiology Symposium (delayed until April, 2021 due to COVID 19)
Convener
2019 GSA Annual Meeting technical session: Hello (ancient) world!: Exploring the Neoproterozoic to Cambrian interval by quantitatively probing the rock record
Reviewer
NSF EAR IF; Geophysical Research Letters

University and Professional Service

2020 - 2021
Postdoctoral Representative, Department of Earth Sciences Diversity, Equity, and Inclusion Committee
2016 - 2018
Vice President, Graduate Student Government
2015
President, Graduate Student Government