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Route 125 roadcuts, Lewis Township, Brown Co., Ohio, USAi
Regional Level Types
Route 125 roadcutsGroup of Road Cuttings
Lewis TownshipTownship
Brown Co.County
OhioState
USACountry

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Key
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Latitude & Longitude (WGS84):
38° 52' 31'' North , 83° 55' 46'' West
Latitude & Longitude (decimal):
Locality type:
Group of Road Cuttings
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Georgetown4,447 (2017)2.5km
Hamersville533 (2017)6.6km
Higginsport244 (2017)10.0km
Russellville543 (2017)12.4km
Augusta1,163 (2017)13.3km


A series of roadcuts through Ordovician shales and limestones to the east and west of White Oak Creek, WNW of the city of Georgetown.

Mineralization is heavily concentrated fossil materials with some mineralization.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


10 valid minerals.

Detailed Mineral List:

Baryte
Formula: BaSO4
Reference: www.rockmanjoe.com/Georgetown.html.
Calcite
Formula: CaCO3
Reference: www.rockmanjoe.com/Georgetown.html.
Celestine
Formula: SrSO4
Reference: www.rockmanjoe.com/Georgetown.html.
Dolomite
Formula: CaMg(CO3)2
Reference: www.rockmanjoe.com/Georgetown.html.
Dolomite var: Ferroan Dolomite
Formula: Ca(Mg,Fe)(CO3)2
Reference: www.rockmanjoe.com/Georgetown.html.
Goethite
Formula: α-Fe3+O(OH)
Reference: www.rockmanjoe.com/Georgetown.html.
Marcasite
Formula: FeS2
Reference: www.rockmanjoe.com/Georgetown.html.
Pyrite
Formula: FeS2
Reference: www.rockmanjoe.com/Georgetown.html.
Quartz
Formula: SiO2
Reference: www.rockmanjoe.com/Georgetown.html.
Sphalerite
Formula: ZnS
Reference: www.rockmanjoe.com/Georgetown.html.
Strontianite
Formula: SrCO3
Reference: www.rockmanjoe.com/Georgetown.html.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Marcasite2.EB.10aFeS2
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
var: Ferroan Dolomite5.AB.10Ca(Mg,Fe)(CO3)2
Strontianite5.AB.15SrCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Celestine7.AD.35SrSO4

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:2
Marcasite2.12.2.1FeS2
Pyrite2.12.1.1FeS2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Strontianite14.1.3.3SrCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Celestine28.3.1.2SrSO4
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
Dolomite
var: Ferroan Dolomite
-Ca(Mg,Fe)(CO3)2

List of minerals for each chemical element

HHydrogen
H Goethiteα-Fe3+O(OH)
CCarbon
C DolomiteCaMg(CO3)2
C Dolomite (var: Ferroan Dolomite)Ca(Mg,Fe)(CO3)2
C StrontianiteSrCO3
C CalciteCaCO3
OOxygen
O CelestineSrSO4
O DolomiteCaMg(CO3)2
O Dolomite (var: Ferroan Dolomite)Ca(Mg,Fe)(CO3)2
O Goethiteα-Fe3+O(OH)
O QuartzSiO2
O StrontianiteSrCO3
O BaryteBaSO4
O CalciteCaCO3
MgMagnesium
Mg DolomiteCaMg(CO3)2
Mg Dolomite (var: Ferroan Dolomite)Ca(Mg,Fe)(CO3)2
SiSilicon
Si QuartzSiO2
SSulfur
S CelestineSrSO4
S MarcasiteFeS2
S PyriteFeS2
S SphaleriteZnS
S BaryteBaSO4
CaCalcium
Ca DolomiteCaMg(CO3)2
Ca Dolomite (var: Ferroan Dolomite)Ca(Mg,Fe)(CO3)2
Ca CalciteCaCO3
FeIron
Fe Dolomite (var: Ferroan Dolomite)Ca(Mg,Fe)(CO3)2
Fe Goethiteα-Fe3+O(OH)
Fe MarcasiteFeS2
Fe PyriteFeS2
ZnZinc
Zn SphaleriteZnS
SrStrontium
Sr CelestineSrSO4
Sr StrontianiteSrCO3
BaBarium
Ba BaryteBaSO4

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Paleozoic
251.902 - 541 Ma



ID: 3187973
Paleozoic sedimentary rocks

Age: Phanerozoic (251.902 - 541 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Hirnantian - Sandbian
443.8 - 458.4 Ma



ID: 2719402
Grant Lake Limestone and Fairview Formation, Undivided

Age: Late Ordovician (443.8 - 458.4 Ma)

Stratigraphic Name: Grant Lake Formation; Fairview Formation

Description: Limestone and shale, interbedded; gray to bluish-gray weathers light gray to yellowish-gray; planar to lenticular, thin to medium bedded in lower half; wavy to irregular to nodular, thin to thick bedded in upper half; fossiliferous.

Comments: Secondary unit descriptions from USGS Lexicon website (ref. OH017) and OH012, OH013: Grant Lake Limestone and Grant Lake Formation are adopted by the Ohio Geological Survey for southwestern OH. The shale content of the Grant Lake Limestone progressively increases between Maysville, KY, and Cincinnati, OH. The term Grant Lake Formation is used where the unit becomes predominantly shale (50 to 60%). The Grant Lake Formation is divided into (ascending) Bellevue, Corryville, and Mount Auburn Members. Name is applied in Butler, Hamilton, and Warren Cos. and in portions of Brown, Clermont, and Clinton Cos. Type section is designated as the composite section exposed along Stonelick Creek in Clermont Co., OH (Ohio Geological Survey measured sections 16831, 16836, 16837, and 16852). Ohio Geological Survey cores 868, 2537, 2620, 2627, 2981, and 2982 are designated as principal reference sections. The Grant Lake Limestone is redefined to include those stratigraphic sequences that contain less than a mean value of 50% calcareous, fossiliferous shale. Road cuts created for KY Rte 11, near Maysville, are designated as principal reference sections. Unit is divided into the Bellevue, Corryville, and Straight Creek (new name) Members. Name is applied in Adams and Highland Cos. and in portions of Brown, Clermont and Clinton Cos. The Grant Lake overlies the Miamitown Shale or Fairview Formation and underlies the informal Arnheim formation, all of the informal Cincinnati group (Schumacher and others, 1991). Fairview Formation: The Kope-Fairview-Bellevue succession is the first of three major progradational units that compose the Cincinnatian Series in the Cincinnati, OH, area. Each succession is interpreted as a mixed siliciclastic-carbonate ramp. The Kope Formation is the most distal facies of the ramp complex. The Fairview Formation is the intermediate-depth lithofacies in the upward-shoaling succession. Unit is 20 to 35 m thick and is composed of subequal proportions of thin-bedded, fine to coarse skeletal limestone and gray, thin-bedded shales and minor siltstone. The North Bend Tongue is separated from the main body of the Fairview by the Wesselman Tongue of the Kope. The North Bend becomes indistinguishable 15 to 20 km northwest of Cincinnati. Faunal assemblages in the Fairview are marked by changes in type and morphologic character due to an increase in physical energy. Larger brachiopods and ramose trepostome bryozoans are common. Interfingers to the southeast with Calloway Creek Formation and to the northwest with the upper part of the Kope Formation. Age shown as largely Maysvillian; Edenian very locally south of the Ohio River (Jennette and Pryor, 1993). Original map source: Slucher, E.R., (principal compiler), Swinford, E.M., Larsen, G.E., and others, with GIS production and cartography by Powers, D.M., 2006, Bedrock geologic map of Ohio: Ohio Division of Geological Survey Map BG-1, version 6.0, scale 1:500,000.

Lithology: Major:{limestone,shale}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Vasichko, Joseph W., Mineralization of Geodized Brachiopods, Georgetown, Brown County, Ohio.

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