The Unionidae of the Chagrin River: The Remnant of a Molluscan Fauna
Hoggarth, Michael A. (1990-12)
The study of the distribution of the Unionidae of Ohio reveals information on the biogeography of this family that may be useful in the study of other groups of animals. Thirty sites on the Chagrin River and its major ...
Index to Volume 90
Research Review: Application of Expert Systems in the Sciences
Durkin, John (1990-12)
Studies from the field of artificial intelligence have given birth to a relatively new but rapidly growing technology known as expert systems. An expert system is a computer program which captures the knowledge of a human ...
Field Guide to Joint Patterns and Geomorphological Features of Northern Ohio
Dean, Stuart L.; Kulander, Byron R.; Forsyth, Jane L.; Tipton, Ronald M. (1991-03)
Bedrock in northern and northwestern Ohio consists of Middle Paleozoic carbonates and shales and is pervasively jointed. The regional joint pattern and chronology, established by the characteristics of joint traces, ...
Field Guide to Berea Sandstone Outcrops in the Black River Valley at Elyria, Ohio: Slumps, Slides, Mud Diapirs, and Associated Fracturing in Mississippian Delta Deposits
Wells, Neil A.; Coogan, Alan H.; Majoras, Judy J. (1991-03)
Synsedimentary slumps of Berea Sandstone and diapirs of Cleveland and Bedford Shales are seen in complex delta-front facies at Elyria, Lorain County, OH. Analysis of orientations of fractures, bedding, and crossbeds helps ...
Middle Devonian (Givetian) Silica Formation of Northwest Ohio - Description and Road Log
Camp, Mark J.; Hatfield, Craig Bond (1991-03)
Middle Devonian marine strata are examined in this field trip to the former Medusa South-South Quarry (now the property of the France Stone Company) at the famous Silica locality of Lucas County in northwest Ohio. The ...
The Middle Run Formation: A Subsurface Stratigraphic Unit in Southwestern Ohio
Shrake, Douglas L. (1991-03)
The Middle Run Formation, a recently described and named sedimentary unit, was encountered below the Mount Simon Sandstone (Upper Cambrian) in the Ohio Department of Natural Resources (ODNR), Division of Geological Survey ...
Lithostratigraphy of the Grant Lake Limestone and Grant Lake Formation (Upper Ordovician) in Southwestern Ohio
Schumacher, Gregory A.; Swinford, E. Mac; Shrake, Douglas L. (1991-03)
The Grant Lake Limestone, including, in ascending order, the Bellevue, the Corryville, and the Straight Creek Members, and the Grant Lake Formation, including, in ascending order, the Bellevue, the Corryville, and the Mount ...