- Industry: Mining
- Number of terms: 33118
- Number of blossaries: 0
- Company Profile:
The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
An erosion surface that was buried by younger sediments and was later exposed by their removal. Sometimes used as a syn. of buried erosion surface.
Industry:Mining
An eruptive iron ore occurring at Routivara, Sweden, and consisting of magnetite (in part titaniferous), spinel, and smaller amounts of olivine, pyroxene, apatite, and pyrrhotite. The ore contains about 14% titanic oxide.
Industry:Mining
An escarpment that is the result of differential erosion along a fault line rather than the direct result of movement along the fault; e.g., the east face of the Sierra Nevada in California.
Industry:Mining
An escarpment that owes its relief to a line of faulting, the escarpment occurring on the upthrown side of the fault.
Industry:Mining
An essentially metamorphic process by which a solid rock is converted into a granitic rock by the entry and exit of material, without passing through a magmatic stage. Some authors include in this term all granitic rocks formed from sediments by any process, regardless of the amount of melting or evidence of movement. The precise mechanism, frequency, and magnitude of the processes are still in dispute.
Industry:Mining
An essentially metamorphic process by which a solid rock is converted into a granitic rock by the entry and exit of material, without passing through a magmatic stage. Some authors include in this term all granitic rocks formed from sediments by any process, regardless of the amount of melting or evidence of movement. The precise mechanism, frequency, and magnitude of the processes are still in dispute.
Industry:Mining
An establishment in which metals are extracted from ores by furnaces.
Industry:Mining
An estimate of the price for a future month date which is used to designate a closing price when no trading has taken place in that date. Also used for current price indications in similar circumstances in physical trading.
Industry:Mining
