Where is tufa rock found?
Regional SpecificsTufa, the unusual rock formations that jut out of Mono Lake in California’s Eastern Sierra, are famous for their otherworldly beauty. The greatest concentration of these unique “towers” is located at the south end of the lake. In the photo above, the moon rises over one of the dark ivory towers. How does a tufa
How are the agents of weathering similar and different?
Regional SpecificsHow are the agents of weathering the different? Agents responsible for weathering include ice, salts, water, wind and plants and animals. Road salt and acids represent a form of chemical weathering, as these substances contribute to the wearing away of rocks and minerals as well. What are the similarities of weathering? Both weathering and erosion
What produces a reverse fault?
Regional SpecificsA tilted block that lies between two normal faults dipping in the same direction is a tilted fault block. Reverse dip-slip faults result from horizontal compressional forces caused by a shortening, or contraction, of Earth’s crust. The hanging wall moves up and over the footwall. What produces a reverse fault explain how? In a reverse
What is the color of onyx?
Regional SpecificsOnyx is a variety of chalcedony that exhibits parallel bands of color, primarily black or white. Natural black onyx does exist, although it is rare. What is the natural color of onyx? Onyx Information Data Value Refractive Index 1.544-1.553 Colors Black, white (banded). Varieties may show red, brown, yellow, and blue layers. Solid black onyx
Is hanging valley erosion or deposition?
Geology & LandformU-shaped valleys, hanging valleys, cirques, horns, and aretes are features sculpted by ice. The eroded material is later deposited as large glacial erratics, in moraines, stratified drift, outwash plains, and drumlins. Is a hanging valley formed by erosion? Thus, hanging valleys are formed as a result of the erosion effects due to glaciation. Research says
How many cleavage does olivine have?
Regional SpecificsThe specific gravity and hardness of the olivines are listed in the Table. There are at least two cleavages—i.e., the tendency to split along preferred crystallographic directions (perpendicular to the a and b axes in this case)—both of which are better-developed in the iron-rich varieties. Does olivine have a cleavage? Cleavage and fracture – Olivine