Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Seismic ground-failure features in the vicinity of the lower Wabash and Ohio River valleys

Ronald C. Counts, James M. Durbin and Stephen F. Obermeier
Seismic ground-failure features in the vicinity of the lower Wabash and Ohio River valleys (in From the Cincinnati Arch to the Illinois Basin; geological field excursions along the Ohio River valley, Anton H. Maria (editor) and Ronald C. Counts (editor))
Field Guide (Geological Society of America) (2008) 12: 57-79

Abstract

The lower Wabash and Ohio River valleys have experienced seismicity throughout geologic time. The rocks and sediments in southern Indiana, southern Illinois, and western Kentucky provide records of these past seismic events in the form of various types of filled fractures. In the field these features occur either as downward penetrating, surface-filled fractures created by tectonic deformation or seismicity, or as upward penetrating liquefaction features such as clastic dikes and sills created by strong earthquakes. The fractures are widespread and abundant in many places, and are usually seen in natural exposures such as stream banks and less commonly in man-made excavations. In contrast, their causative faults are rarely observed. Thus, compared to searching for faults, the study of filled fractures is a useful and relatively inexpensive technique for assessing the seismic history of a region. The fractures discussed are clearly of seismic origin on the basis of morphology, sediment characteristics, regional patterns, and proximity to known faults. Further research is needed to determine whether additional types of features, which we discuss and examine in the field, can also serve as paleoseismic indicators.


ISSN: 2333-0937
EISSN: 2333-0945
Serial Title: Field Guide (Geological Society of America)
Serial Volume: 12
Title: Seismic ground-failure features in the vicinity of the lower Wabash and Ohio River valleys
Title: From the Cincinnati Arch to the Illinois Basin; geological field excursions along the Ohio River valley
Author(s): Counts, Ronald C.Durbin, James M.Obermeier, Stephen F.
Author(s): Maria, Anton H.editor
Author(s): Counts, Ronald C.editor
Affiliation: Kentucky Geological Survey, Henderson, KY, United States
Affiliation: University of Southern Indiana, Geology and Physics Department, Evansville, IN, United States
Pages: 57-79
Published: 2008
Text Language: English
Publisher: Geological Society of America, Boulder, CO, United States
ISBN: 978-0-8137-0012-0
References: 36
Accession Number: 2008-114528
Categories: Seismology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Includes appendix
Illustration Description: illus. incl. sects., geol. sketch maps
N36°45'00" - N38°45'00", W89°00'00" - W87°00'00"
Secondary Affiliation: Kentucky Geological Survey, USA, United StatesUniversity of Southern Indiana, USA, United StatesEqLiq Consulting, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Update Code: 200843
Close Modal

or Create an Account

Close Modal
Close Modal