Show simple item record Gutstadt, Allan M. 2006-08-04T19:38:20Z 2006-08-04T19:38:20Z 1958
dc.identifier.citation Gutstadt, A.M., 1958, Cambrian and Ordovician Stratigraphy and Oil and Gas Possibilities in Indiana. Indiana Geological Survey Bulletin 14, 103 p., 17 fig., 1 pl. en
dc.description Indiana Geological Survey Bulletin 14 en
dc.description.abstract Cambrian and Ordovician rocks throughout most of Indiana are subdivided in ascending order as follows: lower part of the St. Croixan series, consisting of the Mt. Simon sandstone and the Eau Claire formation, upper part of the St. Croixan series and the Canadian series consisting of the Knox dolomite; the Chazyan series consisting of the St. Peter sandstone and the Joachim dolomite; the Mohawkian series consisting of the Black River limestone and the Trenton limestone; and the Cincinnatian series consisting of the Eden group (undifferentiated) and the Maysville-Richmond group (undifferentiated). The Mt. Simon sandstone, the Eau Claire formation and the lower part of the Knox dolomite may be facies that represent contemporaneous environments, respectively, of beach or littoral deposition, near-shore deposition, and offshore deposition. The St. Peter sandstone, was deposited unconformably on the eroded surface of the Knox and was succeeded by carbonate deposition until late Ordovician time. The Cincinnatian series represents shallow-water deposition where the physical and biological environments alternated rapidly between clear water and optimum conditions for life and muddy water and unfavorable conditions for life. The Mt. Simon sandstone and the Eau Claire formation are virtually untested for oil and gas, although the Mt. Simon has ideal reservoir characteristics of the "blanket-sand" type, and the Eau Claire exhibits rapid local changes in porosity which might serve to localize accumulations of oil or gas. The Knox dolomite contains highly permeable zones, and many shows of gas have been reported, although commercial production is lacking. The St. Peter sandstone has been considered a good prospect for oil or gas, but remarkably few shows of either have been reported. Any oil or gas found in the Black River most likely will be in local dolomitized lenses. Additional Trenton production might be found in northern Indiana, where the formation consists of dolomite, and possibly in southern Indiana, where the formation contains interbedded shale. Only a few shows have been reported from Cincinnatian rocks, and possibilities are not attractive because of the lack of good reservoir rocks. en
dc.description.sponsorship Indiana Department of Conservation en
dc.format.extent 2984602 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Indiana Geological Survey en
dc.relation.ispartofseries Bulletin en
dc.relation.ispartofseries 14 en
dc.rights This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License. To view a copy of this license, visit or send a letter to Creative Commons, 543 Howard Street, 5th Floor, San Francisco, California, 94105, USA. en
dc.subject Stratigraphy en
dc.subject Oil en
dc.subject Natural Gas en
dc.subject Energy Resources en
dc.subject Petroleum en
dc.subject Cambrian en
dc.subject Ordovician en
dc.subject Eau Claire Formation en
dc.subject Knox Dolomite en
dc.subject St. Peter Sandstone en
dc.subject Black River Group en
dc.title Cambrian and Ordovician Stratigraphy and Oil and Gas Possibilities in Indiana en
dc.type Technical Report en

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