Browsing Reports of Progress - Indiana Geol. Survey by Subject "Coal"

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  • Pickering, Ranard J. (Indiana Geological Survey, 1953)
    The bituminous coals of Indiana show a characteristic bright and dull banding which is due to alternating bands of five distinct physical constituents, namely, vitrain, clarain, durain, fusain, and mineral matter. A ...
  • Friedman, Samuel A. (Indiana Geological Survey, 1960-12)
    Data from coal-test boreholes and outcrops show that channel-fill sandstones occur at 32 localities in western Indiana in the Brazil, Staunton, Linton, Petersburg, and Dugger Formations of middle Pennsylvanian age. These ...
  • Canright, James E. (Indiana Geological Survey, 1959-08)
    Plant fossils were first recorded in Indiana by David Dale Owen in l843. Lesquereux's "Description of the Coal Flora of the Carboniferous Formation in Pennsylvania and Throughout the United States," published in 1880, ...
  • Guennel, Gottfried K. (Indiana Geological Survey, 1952)
    In this report the significance of spores in plant life cycles is discussed briefly. The term “miospore” is proposed for fossil spores and spore-like bodies under 200 micra in size. Sampling and coal preparation are outlined, ...

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