|Latitude & Longitude (WGS84):||31° 45' 21'' North , 102° 28' 42'' West|
|Latitude & Longitude (decimal):||31.75583,-102.47833|
|Köppen climate type:||BSk : Cold semi-arid (steppe) climate|
A group of five meteorite shallow craters located about ten miles southwest of Odessa. The largest is approximately 165 meters wide -- second largest crater in the US.
The craters were produced by the Odessa (iron) meteorite, a coarse octahedrite classified as a member of the main group of IAB meteorites (IAB-MG). Since 1922 1.6 tons of Fe-Ni rich meteoritical material (Ni ~7 wt%) has been recovered. The sulfides, silicates and several other familiar minerals listed here are, in the main, constituents of the original meteorite where they were often components of troilite and/or graphite inclusions. Several IAB iron meteorites, including the Odessa (iron) meteorite, contain 'silicate' inclusions which contain olivine, orthopyroxene, plagioclase, and other minor minerals. The pre-terrestrial Odessa silicates are usually very reduced and Mg-rich. Several minerals and mineral aggregates listed here (e.g., hibbingite, lawrencite, limonite) were produced by terrestrial weathering of the original iron meteorite. Pentlandite is somewhat more complicated as it is apparently both a primary, preterrestrial component and a weathering product.
The proper name for the meteorite associated with the Odessa Craters is 'Odessa (iron)' as the 'Odessa' meteorite refers to fragments of the earlier (1881) Grossliebenthal meteorite which fell in the Odessa Province of Ukraine.
Significant amounts of the Odessa meteorite are held in the nearby State Universities of Texas (Austin) and New Mexico (Albuquerque) and elsewhere. Masses with well-preserved interior masses, however, are still in short supply.
Mineral ListMineral list contains entries from the region specified including sub-localities
24 valid minerals.
Rock Types Recorded
Rock list contains entries from the region specified including sub-localities
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
100.5 - 145 Ma
Age: Early Cretaceous (100.5 - 145 Ma)
Comments: Fredericksberg Group--Limestone,dolomite,chert, marl. Limestone nodular, aphanitic, marly, gray, yell, white, pink; dolomite, find grained, gray; chert, in thin layers and nodules; marl locally gypsiferous, gray. abundant Exogyra texana some beds made almost entirely of Gryphaea sp., exposed thickness 50 ft in Hobbs Sheet (1976). Edwards Limstone, limestone, dolostone, and chert 60-350 ft thick. Comanche Peak Limestone 80 ft thick. Keys Valley Marl, soft, white as much as 50 ft thick. Cedar Park Limestone similar to Comanche Peak Ls (fine to v. fine grained, fairly hard, nodular, lt. gray, burrowed). Bee Cave Marl soft, white Exogyra texana abdt, thickness 25-40 ft.
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. 
Localities in this Region
- Ector Co.
- Odessa craters
- Ector Co.