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Baker Park, Sheridan Lake, Pennington Co., South Dakota, USA

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Latitude & Longitude (WGS84): 43° 58' 26'' North , 103° 25' 3'' West
Latitude & Longitude (decimal): 43.97407,-103.41752
GeoHash:G#: 9xy6ntjxt
Locality type:Park
KΓΆppen climate type:BSk : Cold semi-arid (steppe) climate


1.5 miles east of Sheridan dam.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


2 valid minerals.

Detailed Mineral List:

β“˜ Quartz
Formula: SiO2
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
β“˜ Zoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
β“˜'Quartz'4.DA.05SiO2
Group 9 - Silicates
β“˜'Zoisite'9.BG.10{Ca2}{Al3}(Si2O7)(SiO4)O(OH)

List of minerals arranged by Dana 8th Edition classification

Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
β“˜Zoisite58.2.1b.1{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
β“˜Quartz75.1.3.1SiO2

List of minerals for each chemical element

HHydrogen
Hβ“˜ Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
OOxygen
Oβ“˜ QuartzSiO2
Oβ“˜ Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
AlAluminium
Alβ“˜ Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
SiSilicon
Siβ“˜ QuartzSiO2
Siβ“˜ Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
CaCalcium
Caβ“˜ Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)

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

Quaternary
0 - 2.588 Ma



ID: 2972639
Colluvium

Age: Pleistocene (0 - 2.588 Ma)

Description: Clay to boulder-size clasts forming rubble residuum and talus. Thickness up to 30 ft (9m).

Lithology: Major:{coarse alluvium,fine alluvium}

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]

Paleoproterozoic
1600 - 2500 Ma



ID: 3191697
Paleoproterozoic crystalline metamorphic rocks

Age: Proterozoic (1600 - 2500 Ma)

Lithology: Paragneiss

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]

Paleoproterozoic
1600 - 2500 Ma



ID: 2471399
Metamorphosed younger alkalic basalt, tuff, and volcaniclastic rocks

Age: Proterozoic (1600 - 2500 Ma)

Description: Pillowed chloritic greenstone or amphibolite, and layered amphibole schist and amphibole-bearing or biotite-rich schist. Thin interflow deposits include various dark-gray and black schists, typically containing some sulfide minerals or carbon-rich strata, and lenses of massive metachert and banded siderite-metachert or cummingtonite-rich beds. In Lead area this unit is part of the Flag Rock Group (Hosted and Wright, 1923) and in Rochford area it is equivalent to the Rapid Creek Greenstone of the Flag Rock Group (Bayley, 1972b). In Mount Rushmore quadrangle, unit represents two apparent separate volcanic centers largely within unit Xqc. Correlated with the Crow Formation west of Custer (Redden, 1963), which has flows and agglomerate having generally similar trace-element abundances and is locally enriched in niobium and cesium, suggestive of alkalic volcanism. In Rochford area, unit intertongues with tuffaceous shale, tuff, and volcaniclastic rocks (unit Xtv) that have U-Pb zircon age of 1,884 Β± 29 Ma (Redden and others, 1990). Maximum thickness about 1,000 m.

Reference: Redden, J.A., E. DeWitt. Maps Showing Geology, Structure, and Geophysics of the Central Black Hills, South Dakota. U.S. Geological Survey Scientific Investigations Map 2777. [73]

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


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