Salt Flat is a ghost town in northeastern Hudspeth County, Texas, United States. It lies along the concurrent U.S. Routes 62 and 180 north of the Census-designated place (CDP) of Sierra Blanca, the county seat of Hudspeth County.[1] Its elevation is 3,730 feet (1,137 m).[2] Although Salt Flat is unincorporated, it has a ZIP Code of 79847.[3] The headquarters of the nearby Guadalupe Mountains National Park uses this ZIP Code although it is located closer to Pine Springs, which has no post office.
Salt Flat, Texas | |
|---|---|
Ghost town | |
Salt Flat Salt Flat | |
| Coordinates: 31°44′37″N 105°5′34″W | |
| Country | United States |
| State | Texas |
| County | Hudspeth F |
| Elevation | 3,730 ft (1,140 m) |
| Time zone | UTC−07:00 (Mountain (CST)) |
| • Summer (DST) | UTC−06:00 (MDT) |
| ZIP Code | 79847 |
| GNIS feature ID | 1367427 |

Just outside the community there is a dry salt pan called Salt Flat Playa or Salt Basin. It straddles the New Mexico-Texas border and is about 150 miles long, and 5 to 15 miles wide making it one of the largest gypsum playas in the United States. The playa occupies the north-south oriented Salt Basin Grabben, which lies between the Guadalupe and Delaware Mountains on the east and the Sierra Diablo and Diablo Plateau on the west. Originally the playa was a lake during the late Pleistocene, but drying of the climate since then has left a salt pan.[4] Today, a briny water table is about three feet below the surface. Capillary evaporation in the dry, hot weather pulls brine upwards and evaporite (gypsum, halite) and carbonate (calcite, dolomite) minerals precipitate.[4] Cyanobacteria (blue-green algae) grow on the surface and immediately below the surface when the playa is wet. Alternating light and dark bands are either gypsum-rich (light) or dolomite-rich (dark)[5] When the playa is dry during the summer, winds blow the gypsum into sand dunes.
The San Elizario Salt War was a dispute over ownership and access to these salt deposits.[6]



Municipalities and communities of Hudspeth County, Texas, United States | ||
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County seat: Sierra Blanca | ||
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| CDPs |
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| Other communities | ||
| Ghost towns | ||
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