on April 15, 2022
What type of lava does Yellowstone have?
Regional SpecificsThe most likely type of volcanic eruption at Yellowstone would produce lava flows of either rhyolite or basalt. Does Yellowstone have basaltic lava? Basalt lava flows, though in lesser volume than rhyolites, have erupted throughout the 2.3 million-year volcanic history of the Yellowstone area. The magma feeding these eruptions originated in the upper part of
on April 15, 2022
What are the factors that influence the formation of minerals?
Regional SpecificsPhysical and chemical conditions include factors such as temperature, pressure, presence of water, pH, and amount of oxygen available. Time is one of the most important factors because it takes time for atoms to become ordered. If time is limited, the mineral grains will remain very small. What are 3 ways minerals are formed? Minerals
on April 15, 2022
What causes a rockslide?
Regional SpecificsA rockslide is a type of landslide caused by rock failure in which part of the bedding plane of failure passes through compacted rock and material collapses en masse and not in individual blocks. Note that a rockslide is similar to an avalanche because they are both slides of debris that can bury a piece
on April 15, 2022
When did the Missoula Floods occur?
Regional SpecificsBetween 15,000 and 13,000 years ago Glacial Lake Columbia (west) and Glacial Lake Missoula (east) are shown south of Cordilleran ice sheet. The areas inundated in the Columbia and Missoula floods are shown in red. Date Between 15,000 and 13,000 years ago Location The current states of: Idaho, Washington, and Oregon Cause Ice dam ruptures
on April 15, 2022
What is catastrophism and why is it relevant for the theory of evolution?
Regional Specificscatastrophism, doctrine that explains the differences in fossil forms encountered in successive stratigraphic levels as being the product of repeated cataclysmic occurrences and repeated new creations. This doctrine generally is associated with the great French naturalist Baron Georges Cuvier (1769–1832). How did catastrophism contribute to evolution? Cuvier recognized these gaps in the fossil succession as
on April 15, 2022
What is a solid substance that is composed of minerals?
Regional Specificsrock. hard substance composed of one or more minerals. igneous. rock formed from molten lava. sedimentary. What is a solid substance made of minerals? “Ores” are naturally occuring substances that are the moixtures of minerals formed by the Earth. What is an example of a solid mineral? Examples include quartz, feldspar minerals, calcite, sulfur and