Map and Chart--KGS

Abstract

New field mapping of joints with previously published joint and fault locations. This fracture map can be used as a critical data source for hydrological, karst or geotechnical applications. Joint orientations were measured in 2009, 2022 and 2023, and are combined with joint and fault locations for Hardin County, Kentucky from 1:24,000-scale USGS geologic quadrangle maps that were published from 1962 to 1977. The geologic quadrangle maps for the county were digitized from 2002 to 2007.

The geology of Hardin County consists of Upper Devonian New Albany Shale overlain by Lower to Upper Mississippian-age sequences of limestone, dolomite, sandstone and shale. These units were juxtaposed by normal faulting after the Late Pennsylvanian. Dominant joint orientations for all map units trend 0-20, and 70-80 degrees, with minor orientations trending 40-50 and 290-310 degrees, with many joint orientations parallel to subparallel to nearby faults. Most joint orientations were measured in the Middle Mississippian St. Louis and Ste. Genevieve Limestones, which are the most extensive rock units in the study area.

These joint orientations can be viewed online on the Kentucky Geological Survey map service (https://kgs.uky.edu/kygeode/geomap/).

Publication Date

1-30-2024

Series

13

Report Number

6

Digital Object Identifier (DOI)

https://doi.org/10.13023/kgs13mc62024

Funding Information

Funded by the Kentucky Geological Survey.

Related Content

These joint orientations can be viewed online on the Kentucky Geological Survey map service (https://kgs.uky.edu/kygeode/geomap/).

DVGQ (Digitally Vectorized Geologic Quadrangle) Joint Data, https://doi.org/10.13023/kgs.data.8.9.2023

KGS Joint Data,
https://doi.org/10.13023/kgs.data.11.01.2023

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