0
Rocks can differ in many ways -- too many to list. Two examples:
- Composition- The mineral composition is one way that rocks can differ. Some rocks, described as felsic, contain more silica and less iron and magnesium than mafic rocks. Rocks can further be divided by the proportions of these and other elements that they contain.
- Method of formation- Rocks can form in three main ways.
- Igneous rocks are solidified from melt. The speed of cooling and the composition of the magma from which they are formed determine the type of igneous rock. For example, basalt and gabbro have approximately the same composition, but different cooling speeds. Gabbro and granite have similar cooling speeds, but different compositions.
- Sedimentary rocks are formed by the lithification of sediments or precipitates. Again, they can be further divided by the composition of the rocks from which they are formed, as well as by grain size. Additionally, the method of sedimentary formation (biochemical, chemical, or clastic) determines the type of sedimentary rock. For example, limestone can be formed as a biochemical sedimentary rock (fossiliferous limestone), a chemical sedimentary rock (travertine), or a clastic sedimetary rock (clastic limestone).
- Metamorphic rock is formed when a rock undergoes pressure and/or heat without melting. The amount of heat or pressure as well as the direction of any applied pressure influences the type of metamorphic rock produced. The amount of time over which the rock is exposed to pressure or heat also affects the rock produced. For example, rocks such as gneiss experience differential pressure, which causes foliation to occur. In contrast, quartzite does not experience such differential pressure, and is not foliated.
What else can I help you with?
Are rocks made from sand?
it depends what type of rock you have really, if you have a rock with crystals in it wont have sand in, if you have a pourous rock it wont have sand in either, but if you have a rock with grains you may find sand in the rock! Answered by a 12 year old lolz +++ Pretty much right - well done! You do have certain types of rocks ('sedimentary rocks') with sand in them, formed from earlier deposits of sand; but the sand itself is grains of hard minerals remaining from harder rocks that have been eroded away. So the rock with crystals does not have sand in it, but when weathering breaks that rock down, the crystals are left as grains of sand.
What element is used in sand rock soil?
Silicon is the main element found in sand, rocks, and soil. It is commonly found in the form of silicon dioxide, which is the main component of sand and rocks.
What are tiny rocks as small as grains of salt called?
Tiny rocks the size of salt grains are generally called, "Sand".
The original source of all sand is?
The original source of all sand is the weathering and erosion of rocks. Rocks break down over time due to natural processes like wind, water, and ice, resulting in the formation of sand particles.
In what ways sand rocks and soil are the same?
They are both sedimentary rocks (rocks composed of solidified sediment particle matter), the only difference is that sandstone is composed of sand-sized particles, which are bigger than the silt particles which make up siltstone.
What are sand abrasions?
Sand abrasion is the removal of sand from rocks. Rocks disintegrate into sand by natural forces.
If you remove rocks from a beach will it stay sandy?
no because the sand is small rocks no because the sand is small rocks
What kinds of rocks did the sand come from at Great Sand Dunes?
Sedimentary rocks and metamorphic rocks of sedimentary origin.
Is sediment rock made up of rocks?
Yes. Imagine sand stone. It is composed of sand. Sand is ground rocks. Pressure and time create sand stone.
What are rocks called when they are formed by sand rocks and shells?
Rocks formed from sand, rocks, and shells are known as sedimentary rocks. Sandstones, mudstones, and limestone are common examples of sedimentary rocks that can be formed from these materials.
What type of rocks are used in pool filters?
SAnd is used in sand filters. rocks are not used in pool filters.
How do you make sand hard?
natural sand is not "made" it was formed. when rocks erodes, they break apart. they break up into very small "rocks" called sand.
Why are grains on the beach so small?
because sand was once rocks and the rocks got smashed to tiny grains of sand
Are portland cement rocks sand and water a compound?
Yes, Portland cement rocks, sand, and water are indeed a compound.
What is a group of sand called?
A single 'piece' of sand is called a 'grain'.
How do you separate rocks from sand?
What I would do is, use a strainer. Like, that bowl with a bunch of holes in the bottom. And put the sand and rocks in that and the sand will drain out through the holes and the rocks will stay. THIS WILL ONLY WORK IF THE SAND IS EXCEPTIONALLY SMALL AND THE ROCKS EXCEPTIONALLY BIG. Also, BE SURE TO NOT PUT TOO MANY ROCKS IN THE STRAINER, AS THE STRAINER WILL PROBABLY BREAK (unless it's metal).
Is all sand made of the same minerals explain?
no because sand is like sedements which could be made from sedimentary, metamorfic, or igneous rocks. by weathering and erosion each of the catagories of rocks i mentioned in the sentence before can become sedements. hope that helped ;) ~sm
