- 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 ...
Pertaining to the process of metasomatism and to its results. The term is esp. used in connection with the origin of ore deposits.
Industry:Mining
Pertaining to the shallow seas; for accumulations of shells, but sometimes for the whole environment of deposition on the continental shelf.
Industry:Mining
Pertaining to worldwide changes of sea level that affect all the oceans. Eustatic changes may have various causes, but the changes dominant in the last few million years were caused by additions of water to, or removal of water from, the continental icecaps.
Industry:Mining
Pertaining to, composed of, or having the character of shale; esp. readily split along closely spaced bedding planes, such as shaly structure or shaly parting. Also, said of a fine-grained, thinly laminated sandstone having the characteristic fissility of shale owing to the presence of thin layers of shale; or said of a siltstone possessing bedding-plane fissility.
Industry:Mining
Pertaining to, containing, or resembling marl; e.g., marly limestone containing 5% to 15% clay and 85% to 95% carbonate, or marly soil containing at least 15% calcium carbonate and no more than 75% clay (in addition to other constituents).
Industry:Mining
Pertaining to, derived from, or deposited in glacial lakes; esp. said of the deposits and landforms composed of suspended material brought by meltwater streams flowing into lakes bordering the glacier, such as deltas, kame deltas, and varved sediments.
Industry:Mining
