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Earth Science

D-Index
37
Citations
4462
World Ranking
6967
National Ranking
715

Overview

D. A. Spears is affiliated with the University of Sheffield in the United Kingdom and has contributed to the field of Earth and Planetary Sciences, focusing primarily on geochemistry, petrology, and related disciplines.

Their research covers multiple subfields, including geochemistry and petrology, geophysics, mechanical engineering, biomaterials, and anthropology.

The main topics of Spears' work are:

  • Coal and Its By-products
  • Geological and Geochemical Analysis
  • Geochemistry and Elemental Analysis
  • Clay minerals and soil interactions
  • Archaeology and Natural History
  • Advanced materials and composites
  • Extraction and Separation Processes

Spears has authored or coauthored several papers, with notable works including:

  • NEW DIGITAL GEOLOGIC MAP OF VIRGINIA COMPLETED AS A LEVEL 2 GEMS GEODATABASE (2022), published in Abstracts with Programs - Geological Society of America
  • Geology, geochemistry, mineralogy and genesis of the Spetsugli high-germanium coal deposit in the Pavlovsk coalfield, Russian Far East (2021), published in Ore Geology Reviews
  • Modes of occurrence of germanium and tungsten in the Spetsugli germanium ore field, Pavlovka brown coal deposit, Russian Far East (2021), published in Ore Geology Reviews
  • Geochemistry and rare-metal potential of coals of the Sakhalin coal basin, Sakhalin island, Russia (2023), published in International Journal of Coal Geology
  • Mineralogy and geochemistry of rare metal (Zr-Nb-Hf-Ta-REE-Ga) coals of the seam XXX of the Izykh Coalfield, Minusinsk Basin, Russia: Implications for more widespread rare metal mineralization in North Asia (2024), published in International Journal of Coal Geology

Frequent co-authors include:

  • S.I. Arbuzov
  • I. Yu. Chekryzhov
  • Sergey S. Ilenok
  • А. С. Холодов
  • Alexey V. Vergunov

Their research has been published in several scientific venues, among which the most frequent are:

  • International Journal of Coal Geology
  • Abstracts with Programs - Geological Society of America
  • Ore Geology Reviews
  • SSRN Electronic Journal

Best Publications

  • Geochemistry and origin of elements in some UK coals

    D.A Spears;Y Zheng

  • Mineral matter and trace elements in coals of the Gunnedah Basin, New South Wales, Australia

    Colin R Ward;D.A Spears;Carol A Booth;Ian Staton

  • The formation of sedimentary iron minerals

    C. D. Curtis;D. A. Spears

  • The origin of tonsteins, an overview, and links with seatearths, fireclays and fragmental clay rocks

    D.A. Spears

  • A geochemical and mineralogical investigation of some British and other European tonsteins

    D. A. Spears;R. Kanaris‐Sotiriou

  • The breakdown of British Coal Measure rocks

    R.K. Taylor;D.A. Spears

  • Titanium in some Carboniferous sediments from Great Britain

    D.A Spears;R Kanaris-Sotiriou

  • Mineral matter in coals: cleat minerals and their origin in some coals from the English Midlands

    D.A. Spears;S.A. Caswell

  • Towards a classification of shales

    D. A. Spears

  • MAS NMR study of surface-modified calcined kaolin

    Qinfu Liu;D.A. Spears;Qinpu Liu

  • The distribution and origin of trace elements in a UK coal; the importance of pyrite

    D.A Spears;L.I Manzanares-Papayanopoulos;C.A Booth

  • The determination of trace element distributions in coals using sequential chemical leaching—A new approach to an old method

    D.A. Spears

  • Analysis of iron sulphides from UK coal by synchrotron radiation X-ray fluorescence

    Richard N. White;Joseph V. Smith;Joseph V. Smith;D.Alan Spears;Mark L. Rivers;Mark L. Rivers

  • Antimony and arsenic anomalies in the coal seams from the Gokler coalfield, Gediz, Turkey

    A.I Karayigit;D.A Spears;C.A Booth

  • Role of clay minerals in UK coal combustion

    D.A Spears

  • An Upper Carboniferous tonstein of volcanic origin

    D.A. Spears;Clive Maitland Rice

  • Trace elements in combustion residues from a UK power station

    D.A. Spears;M.R. Martinez-Tarrazona

  • Geochemical and mineralogical characteristics of a power station feed-coal, Eggborough, England

    D.A. Spears;M.R. Martinez-Tarazona

  • Nature of tonsteins in the Azeisk deposit of the Irkutsk Coal Basin (Siberia, Russia)

    S.I. Arbuzov;A.M. Mezhibor;D.A. Spears;S.S. Ilenok

  • The geochemistry of environmentally important trace elements in UK coals, with special reference to the Parkgate coal in the Yorkshire–Nottinghamshire Coalfield, UK

    D.A. Spears;S.J. Tewalt

Frequent Co-Authors

Colin R. Ward
Colin R. Ward University of New South Wales
Warren D. Huff
Warren D. Huff University of Cincinnati
A. Martínez-Alonso
A. Martínez-Alonso Spanish National Research Council
Juan M.D. Tascón
Juan M.D. Tascón Spanish National Research Council

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