How are the agents of weathering similar and different?
GeologyHow 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?
GeologyA 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?
GeologyOnyx 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 questionsU-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?
GeologyThe 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
How are Corried formed?
GeologyHow are corries formed simple? Corries form in hollows where snow can accumulate. The snow compacts into ice and this accumulates over many years to compact and grow into a corrie/cirque glacier. This then moves down hill because of gravity and the mass of the ice. How are corries and tarns formed? The glacier moves
Why are Stratovolcanoes more explosive?
GeologyStratovolcanoes are more likely to produce explosive eruptions due to gas building up in the viscous magma. Andesite (named after the Andes Mountains), is perhaps the most common rock type of stratovolcanoes, but stratovolcanoes also erupt a wide range of different rocks in different tectonic settings. Why are stratovolcanoes more explosive than shield volcanoes? Due
Where was the center of the earthquake?
GeologyThe location below the earth’s surface where the earthquake starts is called the hypocenter, and the location directly above it on the surface of the earth is called the epicenter. Where was the center point of the earthquake? The hypocenter is the point within the earth where an earthquake rupture starts. The epicenter is the
What are P waves and S waves also called?
GeologyP-waves and S-waves are sometimes collectively called body waves. What type of waves are P and S waves? Types of Waves: Mechanical Body Waves: P and S waves are mechanical body waves. A mechanical wave is a wave that must travel through a medium, such as the ground or air. The energy of a mechanical
What is the crystal structure of feldspar?
GeologyStructure. The structure of a feldspar crystal is based on aluminosilicate tetrahedra. Each tetrahedron consists of an aluminium or silicon ion surrounded by four oxygen ions. Each oxygen ion, in turn, is shared by a neighbouring tetrahedron to form a three-dimensional network. What is the crystal of feldspar? Most feldspar crystals are tabular and flattened