FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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igneous
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sedimentary
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minerals
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metamorphic
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Detailed explanation-1: -These rocks are often called clastic sedimentary rocks. One of the best-known clastic sedimentary rocks is sandstone. Sandstone is formed from layers of sandy sediment that is compacted and lithified.
Detailed explanation-2: -Limestone is mainly formed from the remains of living organisms. There are many types of limestone, including chalk (above). In Britain, large areas of limestone were also formed in shallow tropical seas around 350 million years ago.
Detailed explanation-3: -Sandstone, a sedimentary rock, is formed when grains of sand are compacted and cemented together over thousands or millions of years. The sand grains often are composed of the minerals quartz or feldspar that were worn off other rocks and ground down into pebbles.