Posted on April 17, 2022 (Updated on July 9, 2025)
How high is Mt St Helena?
Regional SpecificsIs Mt St. Helena a volcano? Although Mount St. Helena is not a volcano, a powerful volcanic eruption took place in its vicinity, in an approximately one-mile radius of the mountain. This all transpired more than 3.4 million years ago, and the results of the volcanics contributed to the formation of Napa Valley’s Petrified
Posted on April 17, 2022 (Updated on July 9, 2025)
What came after the Precambrian era?
Regional SpecificsAn era of geologic time, from the end of the Precambrian to the beginning of the Mesozoic. The word Paleozoic is from Greek and means “old life.” The final period of the Paleozoic era. It is named after the province of Perm, Russia, where rocks of this age were first studied. What are the 3
Posted on April 17, 2022 (Updated on July 9, 2025)
How big are the earth layers?
Regional SpecificsCrust – 5 to 70 km thick. Mantle – 2,900 km thick. Outer Core – 2,200 km thick. Inner Core – 1,230 to 1,530 km thick. How thick is the earths crust? Beneath the oceans, the crust varies little in thickness, generally extending only to about 5 km. The thickness of the crust beneath continents
Posted on April 17, 2022 (Updated on July 9, 2025)
What makes a slope stable?
Regional SpecificsSlope stability is ultimately determined by two factors: the angle of the slope and the strength of the materials on it. How do you know if a slope is stable? If the forces that resist the movement are greater than those driving the movement, the slope is considered stable. A factor of safety (FS) is
Posted on April 17, 2022 (Updated on July 9, 2025)
What is pyrite concrete?
Regional SpecificsWhat is pyrite? Pyrite is a mineral composed of iron sulphide that may be contained in the backfill material (crushed stone) under a concrete slab of a basement or garage. What is pyrite used for in construction? Pyrite and pyrrhotite in aggregates and concrete Aggregates, such as sand, gravel, crushed stone, or other rocky material,
Posted on April 17, 2022 (Updated on July 9, 2025)
What is a plateau answer?
Regional SpecificsA plateau is a flat, elevated landform that rises sharply above the surrounding area on at least one side. Plateaus occur on every continent and take up a third of the Earths land. They are one of the four major landforms, along with mountains, plains, and hills. What is a plateau called? plateaus or plateaux),