Why are Stratovolcanoes more dangerous than shield volcanoes?
Regional SpecificsDue to the higher viscosity of magmas erupted from these volcanoes, they are usually more explosive than shield volcanoes. Stratovolcanoes sometimes have a crater at the summit that is formed by explosive ejection of material from a central vent. Why are stratovolcanoes the most dangerous? Stratovolcanoes are the most dangerous volcanoes to humans and animals
What is Coprolite used for?
Regional SpecificsThey are trace fossils, meaning not of the animal’s actual body. A coprolite like this can give scientists clues about an animal’s diet. By looking at the shape and size of coprolites, as well as where they were found, scientists can work out what kind of animal the droppings might have come from. What is
What factors caused the different shape and structure of Earth?
Regional SpecificsExplanation: It looks like circular on the side and almost flat on the poles. It is near oblong and slightly spherical, this is caused by the rotation of the earth. So when the Earth rotates, the tendency of the Earth is to bulge in the middle (equator). What caused the shape of the Earth? Explanation:
What is the difference between law of superposition and radioactive dating?
Regional SpecificsRelative age is the age of a rock layer (or the fossils it contains) compared to other layers. It can be determined by looking at the position of rock layers. Absolute age is the numeric age of a layer of rocks or fossils. Absolute age can be determined by using radiometric dating. What is the
What is the definition of absolute age?
Regional Specifics1. n. [Geology] The measurement of age in years. The determination of the absolute age of rocks, minerals, and fossils, in years before the present, is the basis for the field of geochronology. What is the definition of relative age? 1. n. [Geology] The approximate age determination of rocks, fossils or minerals made by comparing
What melts to form rhyolitic magma?
Regional SpecificsWhere is rhyolitic magma produced? Rhyolite usually forms in continental or continent-margin volcanic eruptions where granitic magma reaches the surface. Rhyolite is rarely produced at oceanic eruptions. What melts create magma? Besides molten rock, magma may also contain suspended crystals and gas bubbles. Magma is produced by melting of the mantle or the crust in