Event Title
Classification of Dolomite Crystals in the Silurian Bisher Formation, Northeastern Kentucky
Presentation Type
Poster/Portfolio
Presenter Major(s)
Geology, Earth Science
Mentor Information
Patricia Videtich
Department
Geology
Location
Henry Hall Atrium 8
Start Date
10-4-2013 3:00 PM
End Date
10-4-2013 4:00 PM
Keywords
Physical Science
Abstract
The Silurian Bisher Formation outcrop found at the Herron Hill Road Cut in northern Kentucky is comprised primarily of dolomite, with some intermixed shale and traces of quartz and pyrite. This thin-to-thick bedded formation overlies the Silurian Estill Shale and is overlain by the Devonian Ohio Black Shale. Due to echinoid groups and sedimentary features found within the formation, it has been suggested that the Bisher was likely a tidal flat environment. By conducting point counts on samples taken throughout the formation, we will quantify the shape and size of the dolomite crystals. Initial analysis of thin sections indicates the crystals range in size from 20-200 microns and are planar-euhedral in shape. From the literature we will determine what the texture we observe indicates about the temperature and environment of formation for the dolomite. We will also look to see if crystal characteristics of the Bisher Formation may favor a specific classical model of dolomitization.
Classification of Dolomite Crystals in the Silurian Bisher Formation, Northeastern Kentucky
Henry Hall Atrium 8
The Silurian Bisher Formation outcrop found at the Herron Hill Road Cut in northern Kentucky is comprised primarily of dolomite, with some intermixed shale and traces of quartz and pyrite. This thin-to-thick bedded formation overlies the Silurian Estill Shale and is overlain by the Devonian Ohio Black Shale. Due to echinoid groups and sedimentary features found within the formation, it has been suggested that the Bisher was likely a tidal flat environment. By conducting point counts on samples taken throughout the formation, we will quantify the shape and size of the dolomite crystals. Initial analysis of thin sections indicates the crystals range in size from 20-200 microns and are planar-euhedral in shape. From the literature we will determine what the texture we observe indicates about the temperature and environment of formation for the dolomite. We will also look to see if crystal characteristics of the Bisher Formation may favor a specific classical model of dolomitization.