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Terry, Lawrence Co., South Dakota, USA

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Latitude & Longitude (WGS84): 44° 20' North , 103° 49' West
Latitude & Longitude (decimal): 44.33360,-103.81687
GeoHash:G#: 9xyhjwdvg
Köppen climate type:Dfb : Warm-summer humid continental climate


No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


2 valid minerals.

Detailed Mineral List:

Orthoclase
Formula: K(AlSi3O8)
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
Tetradymite
Formula: Bi2Te2S
Reference: SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
'Tetradymite'2.DC.05Bi2Te2S
Group 9 - Silicates
'Orthoclase'9.FA.30K(AlSi3O8)

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:3
Tetradymite2.11.7.1Bi2Te2S
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Orthoclase76.1.1.1K(AlSi3O8)

List of minerals for each chemical element

OOxygen
O OrthoclaseK(AlSi3O8)
AlAluminium
Al OrthoclaseK(AlSi3O8)
SiSilicon
Si OrthoclaseK(AlSi3O8)
SSulfur
S TetradymiteBi2Te2S
KPotassium
K OrthoclaseK(AlSi3O8)
TeTellurium
Te TetradymiteBi2Te2S
BiBismuth
Bi TetradymiteBi2Te2S

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

Permian - Devonian
251.902 - 419.2 Ma



ID: 3190647
Paleozoic sedimentary rocks

Age: Phanerozoic (251.902 - 419.2 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]

Late Ordovician - Middle Cambrian
443.8 - 511 Ma



ID: 2882414
Whitewood Limestone, Winnipeg Formation, and Deadwood Formation

Age: Paleozoic (443.8 - 511 Ma)

Stratigraphic Name: Whitewood Limestone; Winnipeg Formation; Deadwood Formation

Description: Whitewood Limestone (Ordovician)- Mottled, tan, gray to lavender, fine- to medium-crystalline, sparsely fossiliferous limestone and dolomite. Thickness up to 70 ft (21 m). Winnipeg Formation (Ordovician)- Grat and light-green, fissile shale, and tan, calcareous siltstone, sandy shale, and limestone lenses. Thickness up to 110 ft (34 m). Deadwood Formation (Ordovician to Cambrian)- Variegated, yellow to red, brown, gray, and green, glauconitic, conglomerate, sandstone, shale, dolomitic limestone, and dolomite. Thickness 4-400 ft (1-122 m).

Lithology: Major:{conglomerate,sandstone,shale}, Minor:{limestone,dolostone,siltstone}

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]

Early Ordovician - Late Cambrian
470 - 501 Ma



ID: 2474758
Deadwood Formation

Age: Paleozoic (470 - 501 Ma)

Stratigraphic Name: Deadwood Formation

Description: Glauconitic sandstone, shale, siltstone, and conglomerate. Thickness 0–200 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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