Category: Geology and Geography

How is the ocean stratified and what causes the different strata?

The 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

What type of landscapes do volcanoes create?

Landforms 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

What is the Columbia Plateau known for?

The 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

Why was Siccar point so important?

In 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

What is volcanic debris?

BGS 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

What is the Great Rift Valley and why is it important?

The 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

Why is radiometric dating an example of absolute dating?

Radiometric 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

What is the Neogene period known for?

The 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

Is the inner core the hottest part of the earth?

The 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

What is the meaning of layers of the earth?

The structure of the Earth is divided into layers. These layers are both physically and chemically different. The Earth has an outer solid layer called the crust, a highly viscous layer called the mantle, a liquid layer that is the outer part of the core, called the outer core, and a solid center called the

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