- 行业: Mining
- Number of terms: 33118
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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 ...
A fold whose limbs close downward in strata for which the stratigraphic sequence is unknown. Compare: syncline; antiform.
Industry:Mining
A fold whose limbs close upward in strata for which the stratigraphic sequence is not known. Compare: anticline.
Industry:Mining
A fold whose limbs have the same angle of dip relative to the axial surface. Compare: asymmetric fold.
Industry:Mining
A fold with a broad hinge region and limbs that converge away from the hinge.
Industry:Mining