Posted on April 16, 2022 (Updated on July 9, 2025)
Where does a fault occur?
Regional SpecificsFaults are defined by the kind of motion that happens where they are. Normal faults show cracks where one block of rock is sliding down and away from another block of rock. These faults usually occur in areas where the crust is very slowly stretching or where two plates are pulling away from each other.
Posted on April 16, 2022 (Updated on July 9, 2025)
How is a gryke formed?
Regional SpecificsGrykes are formed by acid erosion from water percolating through existing cracks and joints in the alkaline rocks. Over time this erosion widens and deepens the cracks forming a distinctive flagstone-like formation [see also Clint]. What is the difference between a Clint and a gryke? Pavements are made up of two separate but integral parts
Posted on April 16, 2022 (Updated on July 9, 2025)
How many times has Nevado del Ruiz erupted?
Regional SpecificsDuring the past 11,000 years, Nevado del Ruiz passed through at least 12 eruption stages, which included multiple slope failures (rock avalanches), pyroclastic flows and lahars leading to partial destruction of the summit domes. Is the Nevado del Ruiz volcano active? The Colombian volcano Nevado del Ruiz is an active stratovolcano with a history of
Posted on April 16, 2022 (Updated on July 9, 2025)
What crystal system does halite belong to?
Regional SpecificsHalite is a common evaporite mineral, NaCl, used as table salt worldwide. It is arguably the most well-known mineral in the world. It has a formula unit composition of NaCl, and is in the cubic crystal system. What group does halite belong to? The halides group of minerals are salts of sodium, fluoride, and hydrochloric
Posted on April 16, 2022 (Updated on July 9, 2025)
What are the different types plate boundaries?
Regional SpecificsMost seismic activity occurs at three types of plate boundaries—divergent, convergent, and transform. As the plates move past each other, they sometimes get caught and pressure builds up. What are 4 types of plate boundaries? Tectonic Plates and Plate Boundaries Convergent boundaries: where two plates are colliding. Subduction zones occur when one or both of
Posted on April 16, 2022 (Updated on July 9, 2025)
What is abrasion and attrition?
Regional SpecificsAbrasion occurs as a result of two surfaces rubbing against each other resulting in the wearing down of one or both of the surfaces. However, attrition refers to the breaking off of particles (erosion) which occurs as a result of objects hitting against each other. What is attrition and abrasion in dentistry? Tooth wear is