on April 2, 2022
What does plutonic rock mean?
Geology and GeographyWhat is the meaning of plutonic rock? Definition of plutonic rock : an igneous rock (as granite) of holocrystalline granular texture regarded as having solidified at considerable depth below the surface. What is plutonic rock example? Plutonic Igneous Rocks. Intrusive igneous rocks, formed by the slow solidification of magma deep below the surface and characterized
on April 2, 2022
How is the ocean stratified and what causes the different strata?
Geology and GeographyThe ocean is stratified due to differences in density, with warmer, lighter, less salty water layering on top of heavier, colder, saltier water. Mixing between layers occurs as heat slowly seeps deeper into the ocean and by the action of current, winds, and tides. What causes water stratification? Stratification occurs as a result of a
on April 2, 2022
What type of landscapes do volcanoes create?
Geology and GeographyLandforms created by lava include volcanoes, domes, and plateaus. New land can be created by volcanic eruptions. Landforms created by magma include volcanic necks and domes.Dec 20, 2021 What is the landscape of a volcano? Volcanic landscapes consist for the most part of accumulations of solidified lava and of fragmentary volcanic products. What types of
on April 2, 2022
What is the Columbia Plateau known for?
Geology and GeographyThe Columbia Plateau, also known as the Columbia Basin, is the site of one of the largest outpourings of lava that the world has ever seen. The Columbia Plateau flood basalts are a notable example of a “Large Igneous Province,” where vast volumes of basalt are erupted over a relatively short period of time. What
on April 2, 2022
Why was Siccar point so important?
Geology and GeographyIn 1788, James Hutton first discovered Siccar Point, and understood its significance. It is by far the most spectacular of several unconformities that he discovered in Scotland, and very important in helping Hutton to explain his ideas about the processes of the Earth. Why is Siccar Point important? Siccar Point is famous as the site
on April 2, 2022
What is volcanic debris?
Geology and GeographyBGS Research — Volcanoes. Debris flows, also known as lahars when they involve volcanic material, are mixtures of sediments and water that flow down the slopes in response to gravity. What does volcanic debris mean? Moving masses of rock, soil and snow that occur when the flank of a mountain or volcano collapses and slides
on April 2, 2022
What is the Great Rift Valley and why is it important?
Geology and GeographyThe Rift Valley has been a rich source of fossils that allow study of human evolution, especially in an area known as Piedmont. Because the rapidly eroding highlands have filled the valley with sediments, a favourable environment for the preservation of remains has been created. Where is the Great Rift Valley and why is it
on April 2, 2022
Why is radiometric dating an example of absolute dating?
Geology and GeographyRadiometric dating. Most absolute dates for rocks are obtained with radiometric methods. These use radioactive minerals in rocks as geological clocks. The atoms of some chemical elements have different forms, called isotopes. Why is radiometric dating referred as absolute dating? Radiometric dating is referred to as absolute dating because it gives scientists a precise age
on April 2, 2022
What is the Neogene period known for?
Geology and GeographyThe Neogene Period was a time of big changes for the earth. The climate became cooler and drier. Grasslands replaced forests. The animals had to adapt to these changing conditions or face extinction. What is Neogene known for? The Neogene, which means “new born,” was designated as such to emphasize that the marine and terrestrial
on April 2, 2022
Is the inner core the hottest part of the earth?
Geology and GeographyThe core is the hottest, densest part of the Earth. Although the inner core is mostly NiFe, the iron catastrophe also drove heavy siderophile elements to the center of the Earth. Which is the hottest part of the Earth? The hottest layer of the Earth is its innermost layer, the inner core. Is the inner