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Earth Science

D-Index
53
Citations
8628
World Ranking
2930
National Ranking
139

Overview

John G. Spray is affiliated with the University of New Brunswick in Canada and conducts research primarily in Earth and Planetary Sciences, Physics and Astronomy, and Engineering. Their work spans multiple subfields, including Astronomy and Astrophysics, Geophysics, Mechanical Engineering, Atmospheric Science, and Economics and Econometrics.

The scientist has contributed to a range of topics centered on Planetary Science and Exploration, Geological and Geochemical Analysis, Astro and Planetary Science, Geology and Paleoclimatology Research, Additive Manufacturing Materials and Processes, High Entropy Alloys Studies, and High-pressure Geophysics and Materials.

Frequent publication venues for John G. Spray include:

  • Journal of Geophysical Research Planets
  • Meteoritics and Planetary Science
  • Abstracts with programs - Geological Society of America
  • Contributions to Mineralogy and Petrology
  • SSRN Electronic Journal

Collaborations are common in their research, with frequent co-authors being:

  • L. M. Thompson
  • Kanwal Chadha
  • A. S. Yen
  • Clodualdo Aranas
  • R. Gellert

Key recent publications include:

  • Climate Change and Chronic Food Insecurity in Sub-Saharan Africa, 2022, Departmental Paper
  • Effect of Annealing Heat Treatment on the Microstructural Evolution and Mechanical Properties of Hot Isostatic Pressed 316L Stainless Steel Fabricated by Laser Powder Bed Fusion, 2020, Metals
  • Microstructure Evolution, Mechanical Properties and Deformation Behavior of an Additively Manufactured Maraging Steel, 2020, Materials
  • Elemental Composition and Chemical Evolution of Geologic Materials in Gale Crater, Mars: APXS Results From Bradbury Landing to the Vera Rubin Ridge, 2020, Journal of Geophysical Research Planets
  • Staple Food Prices in Sub-Saharan Africa: An Empirical Assessment, 2022, IMF Working Paper

Best Publications

  • Volatile and organic compositions of sedimentary rocks in Yellowknife Bay, Gale crater, Mars.

    Douglas W. Ming;P. D. Archer;D. P. Glavin;J. L. Eigenbrode

  • Pseudotachylyte controversy: Fact or friction?

    John G. Spray

  • A physical basis for the frictional melting of some rock-forming minerals

    John G. Spray

  • Frictional melting processes and products in geological materials: introduction and discussion

    Jerry F. Magloughlin;John G. Spray

  • Age constraints on the igneous and metamorphic evolution of the Hellenic-Dinaric ophiolites

    J. G. Spray;J. Bébien;D. C. Rex;J. C. Roddick

  • Artificial generation of pseudotachylyte using friction welding apparatus: simulation of melting on a fault plane

    John G. Spray

  • Mineralogy, provenance, and diagenesis of a potassic basaltic sandstone on Mars: CheMin X-ray diffraction of the Windjana sample (Kimberley area, Gale Crater)

    Allan H. Treiman;David L. Bish;David T. Vaniman;Steve J. Chipera

  • Frictional Melting Processes in Planetary Materials: From Hypervelocity Impact to Earthquakes

    John G. Spray

  • VISCOSITY DETERMINATIONS OF SOME FRICTIONALLY GENERATED SILICATE MELTS : IMPLICATIONS FOR FAULT ZONE RHEOLOGY AT HIGH STRAIN RATES

    John G. Spray

  • Friction melt distribution in a multi-ring impact basin

    John G. Spray;Lucy M. Thompson

  • Generation of plagiogranite by amphibolite anatexis in oceanic shear zones

    Patricia A. Flagler;John G. Spray

  • Impact-induced hydrothermal activity within the Haughton impact structure, arctic Canada: Generation of a transient, warm, wet oasis

    Gordon R. Osinski;John G. Spray;Pascal Lee

  • Impact-generated carbonate melts: evidence from the Haughton structure, Canada

    Gordon R Osinski;John G Spray

  • Evidence for a late Triassic multiple impact event on Earth

    John G. Spray;Simon P. Kelley;David B. Rowley

  • Laser probe argon‐40/argon‐39 dating of coesite‐ and stishovite‐bearing pseudotachylytes and the age of the Vredefort impact event

    John G. Spray;Simon P. Kelley;W. Uwe Reimold

  • Dynamic fragmentation of granite for impact energies of 6–28 J

    James D. Hogan;Robert J. Rogers;John G. Spray;Suporn Boonsue

  • A case study of impact‐induced hydrothermal activity: The Haughton impact structure, Devon Island, Canadian High Arctic

    Gordon R. Osinski;Gordon R. Osinski;Pascal Lee;John Parnell;John G. Spray

  • Petrology and 40Ar/39Ar geochronology of some hellenic sub-ophiolite metamorphic rocks

    Unknown

  • The nature of the groundmass of surficial suevite from the Ries impact structure, Germany, and constraints on its origin

    Gordon R. Osinski;Richard A. F. Grieve;John G. Spray

  • Geological overview and cratering model for the Haughton impact structure, Devon Island, Canadian High Arctic

    Gordon R. Osinski;Gordon R. Osinski;Pascal Lee;John G. Spray;John Parnell

  • Tectonic influences on the morphometry of the Sudbury impact structure: Implications for terrestrial cratering and modeling

    John G. Spray;Hadyn R. Butler;Lucy M. Thompson

Frequent Co-Authors

Richard A. F. Grieve
Richard A. F. Grieve University of Western Ontario
Simon P. Kelley
Simon P. Kelley University of Leeds
Peter H. Schultz
Peter H. Schultz Brown University
Kip V. Hodges
Kip V. Hodges Arizona State University
Alberto G. Fairén
Alberto G. Fairén Cornell University
Roger C. Wiens
Roger C. Wiens Los Alamos National Laboratory
Susanne P. Schwenzer
Susanne P. Schwenzer The Open University
Charles S. Cockell
Charles S. Cockell University of Edinburgh
Stephan Kempe
Stephan Kempe Technical University of Darmstadt
John Bridges
John Bridges University of Leicester

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