place where rocks, sand, or minerals are extracted from the floor of the Earth. Igneous rocks are fashioned by the cooling and solidification of lava or magma.
Another kind of metamorphism, contact metamorphism, happens when scorching igneous rock intrudes into some pre-current rock. The pre-current rock is essentially baked by the heat, changing the mineral construction of the rock with out addition of strain. Sedimentary rocks are these which might be deposited and lithified (compacted and cemented together) at the Earth’s floor, with the assistance of operating water, wind, ice, or residing organisms. Most are deposited from the land floor to the bottoms of lakes, rivers, and oceans.
Layers could also be distinguished by differences in color, particle size, kind of cement, or inside association. Professor of Earth and Planetary Sciences, University of New Mexico, Albuquerque. Author of Minerals and Rocks; coauthor of Manual of Mineralogy. The origins of glam … Read More