Also called reverse fault . Usually nearly horizontal and covers edges of inclined foreset beds . Formed at high temperatures and pressures through agency of fluids carrying boron and fluorine. Particularly associated with pegmatites . The margin of a continent moving away from the locus of spreading along a midoceanic ridge as, for example, the eastern coasts of North and South America.
All transition elements metallic in free state.
Exhibits gentle windward slope and steep leeward slope characteristic of other dunes. See shear , or shake , wave. Sometimes known as tufa , or dripstone . Roughly rectilinear arrangement of stream courses in pattern reminiscent of garden trellis, developed in region where rocks of differing resistance to erosion have been folded , beveled, and uplifted. TRM - See thermoremanent magnetism .