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Mount Thielsen, Douglas Co., Oregon, USA

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Latitude & Longitude (WGS84): 43° 9' 10'' North , 122° 4' 0'' West
Latitude & Longitude (decimal): 43.15280,-122.06668
GeoHash:G#: 9r9jqr9z2
Locality type:Mountain
Köppen climate type:Csb : Warm-summer Mediterranean 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


1 valid mineral.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

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Alphabetical List Tree Diagram

Detailed Mineral List:

'Fulgurite'
Formula: SiO2
Reference: California Geology, Nov. 1986.
Lechatelierite
Formula: SiO2
Reference: California Geology, Nov. 1986.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
'Lechatelierite'4.DA.30SiO2
Unclassified Minerals, Rocks, etc.
'Fulgurite'-SiO2

List of minerals arranged by Dana 8th Edition classification

Unclassified Minerals, Rocks, etc.
'Fulgurite'-SiO2
Lechatelierite-SiO2

List of minerals for each chemical element

OOxygen
O FulguriteSiO2
O LechatelieriteSiO2
SiSilicon
Si FulguriteSiO2
Si LechatelieriteSiO2

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: 1504785
Late High Cascade Volcanics; Mt. Thielsen Volcano

Age: Pleistocene (0 - 2.588 Ma)

Description: Basalt and andesite cinder; basaltic andesite

Lithology: Major:: {agglutinate, reddish black}; Major:: {basalt cinders, reddish black}; Major:: {andesite cinders, reddish black}

Reference: R.L. Smith, W.P. Roe (compilers). Oregon Geologic Data Compilation, release 6. State of Oregon Department of Geology and Mineral Industries. [20]

Quaternary
0 - 2.588 Ma



ID: 2784162
Basaltic andesite and basalt

Age: Pleistocene (0 - 2.588 Ma)

Description: Flows and flow breccia dominantly of basaltic andesite containing plagioclase, olivine, and pyroxene phenocrysts and olivine-bearing basalt representing part of the volcanic sequence of the High Cascade Range (Thayer, 1937). Unit mostly forms small shield volcanoes, gentle-sided lava cones, and, in places, intracanyon flows

Comments: smaller cones and flows

Lithology: Major:{basaltic andesite,basalt}

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]

Neogene
2.588 - 23.03 Ma



ID: 3186305
Cenozoic volcanic rocks

Age: Neogene (2.588 - 23.03 Ma)

Stratigraphic Name: Columbia River Basalt

Comments: Columbia Plateau

Lithology: Flood basalt(s); mafic volcanic rocks; basalt

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]

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


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