HISTORY
MISCELLENOUS QUESTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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silt from rivers.
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clay deposits.
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rich layers of dust blown by glacial winds.
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coastal sand.
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Detailed explanation-1: -In some parts of the world, windblown dust and silt blanket the land. This layer of fine, mineral-rich material is called loess. Loess is mostly created by wind, but can also be formed by glaciers. When glaciers grind rocks to a fine powder, loess can form.
Detailed explanation-2: -The Loess Hills are comprised of three major layers. From oldest to youngest, the layers are known as the Loveland Loess, (120, 000 to 159, 000 years old), the Pisgah Loess (25, 000 to 31, 000 years old), and the Peoria Loess (12, 500-25, 000 years old).
Detailed explanation-3: -By classical definition, loess is a largely homogeneous, unstratified silt. It is usually a permeable, porous, unconsolidated sediment apt to form vertical cliffs or bluffs. It is commonly yellow or buff in color owing to its content of finely dispersed limonite, though sometimes it is gray.