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They are eather fine grain or course grain. Granite are course Grain, Basalts are fine grains.
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∙ 12y ago
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How are rocks and grains different?
rocks are formed from grains and grains are small and the rocks are big. Sedimentary rocks are formed when grains or sediments are compacted together.
Rocks are classified by what criteria?
Most simply, rocks are classified by how they are formed:igneous rocks are made by the setting of molten magma or lavasedimentary rocks are made when grains weathered from existing rocks settle to the bottom of water bodies, then get buried and compressed into rocksmetamorphic rocks are made by the effects of heat and pressure on existing rocks, which cause them to recrystallise without melting.
Rough - textured rocks have grains?
yes rough textured rocks do have grains.
Rough texture rocks have grains and fine textured rocks have grains?
Yes m that it true, other than glasses all rocks have grains.
Are sedimentary rocks classified tofoliated sedimentary rocks?
Metamorphic rocks are classified by foliation or lack there of, not sedimentary rocks. They are classified into Clastic Sedimentary, and Chemical Sedimentary.
Do lava rocks usually have large grains?
No. They are usually fine grained.No, lava rocks do not have large grains they have very small grains.
Which two rocks are made from rounded grains?
Rocks that are composed of rounded grains or fragments are usually sedimentary rocks. Two of these are sandstone and conglomerate rocks.
Sedimentary rocks are usually classified as?
Clastic-made of mineral grains compacted and cemented together rather than metamorphic and igneous rocks which have a crystalline structure of interlocking crystals.
How are rocks physically classified?
they are classified into 3 major kinds of rocksthey are the ;IGNEOUS ROCKS,SEDIMENTARY ROCKS,AND METAMORPHIC ROCKS
What characteristic do geologist use to classify metamorphic rocks?
Generally they are either foliated (banded, layered) or non-foliated. They may also be classified by the degree of metamorphism and mineralogy.
How can sedimentary rocks can be classified?
sedimentary rocks can be classified by detrial, chemical ,or organic
Where did the small grains of rocks come from?
Older rocks.
