Browsing by Author "Perry, Thomas G."

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  • Utgaard, John; Perry, Thomas G. (Indiana Geological Survey, 1960)
    Fenestrate bryozoans are particularly abundant in shale and argillaceous limestone beds in the upper part of the Glen Dean Limestone (middle Chester) of late Mississippian age In south-central Indiana. Several hundred ...
  • Perry, Thomas G. (Indiana Geological Survey, 1959)
    Fossils are abundant in Indiana’s rocks, and Hoosiers commonly seek information about these relics of ancient life from the Indiana Geological Survey. The primary purpose of this circular is to provide information on the ...
  • Patton, John B.; Perry, Thomas G.; Wayne, William J. (Indiana Geological Survey, 1953-05)
    This field trip guidebook discusses the stratigraphy and paleontology of the Ordovician rocks exposed in southeastern Indiana. Ordovician rocks in southern Indiana are exposed in a region that is stimulating to physiographers ...
  • Patton, John B.; Perry, Thomas G.; Wayne, William J. (Indiana Geological Survey, 1953)
    Within recent years field conferences sponsored by the Geological Survey, Indiana Department of Conservation, and the Department of Geology, Indiana University, have reviewed outstanding exposures and of parts of the ...
  • Gray, Henry H.; Dawson, Thomas A.; McGregor, Duncan, Jr.; Perry, Thomas G.; Wayne, William J (Indiana Geological Survey, 1957-10)
    The purpose of this field conference is to acquaint participants with strata that are associated with the Mississippian-Pennsylvanian boundary in southwestern Indiana. Criteria which aid in distinguishing between Mansfield ...
  • Perry, Thomas G.; Smith, Ned M.; Wayne, William J. (Indiana Geological Survey, 1954-05)
    This field conference was organized to promote a better understanding of the geology of the Salem limestone and associated formations and the physiography of the region in which these rocks are exposed. The conference has ...
  • Perry, Thomas G.; Smith, Ned M.; Wayne, William J. (Indiana Geological Survey, 1964)
    Both the geologist and the layman have recognized the excellence of the Salem as a dimension stone for more than a century. In recent years the Salem limestone has attracted the attention of petroleum geologists, some of ...

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