Blackbird Mine (Pioneer Mine), Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA
|Latitude & Longitude (WGS84):||38° 8' 34'' North , 109° 8' 12'' West|
|Latitude & Longitude (decimal):||38.14278,-109.13667|
|Köppen climate type:||BSk : Cold semi-arid (steppe) climate|
REF:Deposit:: DIX, G. P. (JR.), 1954 , THE URANIUM DEPOSITS OF BIG INDIAN WASH, SAN JUAN CO., UTAH, USAEC RME 4022 (REV.)
Deposit:: ISACHSEN, Y. W., 1954 , ORE DEPOSITS OF THE BIG INDIAN WASH AREA, GUIDEBOOK TO THE GEOLOGY OF UTAH, NO. 9 , UGA.
Commodities (Major) - Copper
Development Status: Past Producer
Host Rock Unit: Salt Wash Member Of Morrison Formation
Structure: Lisbon Valley Fault
Host Rock: Sandstone
Tectonic Structure: Stable Platform
16 valid minerals.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
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
|Holocene - Pleistocene|
0 - 2.588 Ma
|Mixed eolian and alluvial deposits|
Age: Pleistocene (0 - 2.588 Ma)
Description: Light-brown, red, and gray-yellow wind-blown sand and silt in thin sheet-like deposits covering tops of mesas and plateaus or as thicker deposits filling broad valleys, hollows, and other basins; locally interspersed with silt, sand and gravel of alluvial origin; generally dominated by eolian deposits; grades into stream-deposited sand and silt along washes and includes some modern alluvium; commonly displays a well-developed caliche soil horizon near the top; as much as 12 meters (40 ft) thick; Holocene to middle Pleistocene.
Reference: Doelling, H.H. Geologic map of the La Sal 30'x60'quadrangle, San Juan, Wayne, and Garfield Counties, Utah and Montrose and San Miguel Counties, Colorado. Utah Geological Survey. 
174.1 - 201.3 Ma
|Glen Canyon Group|
Age: Early Jurassic (174.1 - 201.3 Ma)
Stratigraphic Name: Glen Canyon Group
Description: Glen Canyon Group (Navajo Ss, Kayenta Fm, and Wingate Ss). Includes Rainbow Bridge.
Comments: Eolian and floodplain fluvial
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.