How big are the crystals in the Cave of Crystals?
Geology36 feetup to 36 feet (11 meters) long and weighing up to 55 tons. “It’s a natural marvel,” said García-Ruiz, of the University of Granada in Spain. How old are the crystals in the Cave of Crystals? about 500,000 years Stein-Erik Lauritzen (University of Bergen, Norway) performed uranium-thorium dating to determine the maximum age of
What safety equipment do volcanologists use in their work?
GeologyMost of the time when they work on a volcano, they just wear a pair of heavy boots, jeans, hat, and long-sleeved shirt to protect from sharp dried lava. They might use heavy work gloves if they are working on fresh lava flows and a rock-climbing helmet if working in an area where there is
What are fragments that make up rocks?
GeologyTextures are fragments that make up rocks. Nonfoliated metamorphic rocks form distinct, parallel layers. What are rocks called that are made of the fragments of other rocks? Clastic sedimentary rocks Clastic sedimentary rocks are composed of rock fragments (clasts) that have been cemented together. What are small fragments of rocks called? Sedimentary rocks are made
What kind of animals are in the Appalachian Mountains?
GeologyThe wildlife a person might encounter in the Appalachian Mountains includes a wide variety of animals: Mammals (moose, white-tailed deer, black bears, beaver, chipmunks, rabbits, squirrels, foxes, raccoons, opossums, skunks, groundhogs, porcupines, bats, weasels, shrews, and minks) What are the creatures that live in the Appalachian Mountains? Scattered through other areas are the black bear,
What are Exogenic forces?
GeologyExogenic (or exogenetic) factors are agents supplying energy for actions that are located at or near the earth’s surface. Exogenic factors are usually driven by gravity or atmospheric forces. The term is commonly applied to various processes such as weathering, denudation, mass wasting, etc. What are Exogenic forces explain? The forces which derive their strength
What is the breakdown of rock into smaller pieces by physical means?
Geology and Geographymechanical weatheringmechanical weathering, where rocks breakdown into smaller pieces by mechanical means. What is the breakdown of rocks into smaller pieces by physical forces? Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and
What is the type of rock formed when magma or lava cools quizlet?
GeologyIgneous rocks are formed from magma or lava that cools and hardens. What is the type of rock formed when magma or lava cools? igneous rock Extrusive, or volcanic, igneous rock is produced when magma exits and cools above (or very near) the Earth’s surface. These are the rocks that form at erupting volcanoes and
Can minerals be human made?
GeologyAlthough minerals, by definition, must form via natural processes, Hazen’s team discovered 208 minerals mediated by humans—they did form naturally but in places such as man-made mines, where unnatural humidity or fires from mining operations created new minerals along the mine walls. Can humans make minerals? Humans can create artificial minerals, like synthetic gemstones, pure
What does mineral replacement fossils mean?
GeologyIn another fossilization process, called replacement, the minerals in groundwater replace the minerals that make up the bodily remains after the water completely dissolves the original hard parts of the organism. Fossils also form from molds and casts. What is mineral replacement fossil? When a hard animal part (shell, bone, tooth) is buried, minerals in
What process creates striations?
GeologyStriations are lines or scratches on rock surfaces, usually no more than a few millimeters in depth, produced by the process of glacial abrasion (Glasser and Bennett, 2004). What processes form striations? Glacial grooves and striations are gouged or scratched into bedrock as the glacier moves downstream. Boulders and coarse gravel get trapped under the