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No, they are composed of fine-grained sediments, grains of which are generally too small to see with the unaided eye. This makes them easily distinguished from rocks like granite, which are composed of grains of minerals large enough to easily identify.

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14y ago
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14y ago

Not necessarily. Although some sedimentary rock is composed of microscopic particles, some is composed of cemented boulder size clasts.

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11y ago

yes

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Q: Does sedimentary rocks have small grains?
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Why do sedimentary rocks erode faster than others?

Sedimentary rocks tend to erode easily compared to other types of rocks as the grains within them are farther apart than the "grains" in, let's say, igneous rocks. As a result of this, the "grains" can be easily crumble. An example of this is sand.


What are the particles in sedimentary rocks called?

Sedimentary rocks are made from particles called sediment. They are made from layers of sediment (small particles) on the bottom of rivers or seas. The sediments are compressed as more layers build on top of them. The particles then become cemented together to form solid rocks. The layers of rock are called strata. Sedimentary rocks have a grainy structure and they easily crumble.


What are sedimentary rocks made of?

Sedimentary rocks can be made from any kind of material, from other rocks to shells to plant material. Basically, any rock, from metamorphic to igneous and even to sedimentary, can be weathered and eroded. These particles and grains can be carried great distances by wind, water, ice, etc. before they are deposited and lithified (cemented) back together to form sedimentary rocks.


Is sedimentary rock made from solidified lava?

Rock that is formed from volcanoes are igneous rocks. Sedimentary rocks are formed from other layers of grains that are heaving and over millions of years have enough weight squish the grains into a proper rock. This is why the newest rocks are found at the top of layers.


Where does sedimentary rock come from originally?

A sedimentary rock is made from the products of the erosion of other rocks. These could be igneous, sedimentary or metamorphic rocks. If you wish to know the original rock from which sedimentary and metamorphic rocks came from, you have to go back to when the Earth formed. In this case, the answer would be an igneous rock.

Related questions

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.


How can one visually identify rocks as sedimentary rocks?

Research has shown that it is not always very easy to identify sedimentary rocks with the naked eye. It has been stated that sedimentary rocks are porous and may contain small holes. Also, if one is to rub the rock and small grains tend to come off it might also be sedimentary.


What are Properties of sedimentary rock?

sedimentary rocks have layers showing the deposition of sediment at different time periods.sedimentary rocks consists of lots of small grains. these grains maybe weakly and together so the rocks are often porous and maybe soft and crumbly.sedimentary rocks often have fossils trapped with in them.sedimentary rocks consist of layers of lots of small particals.


What are the properties of sedimentary rock?

sedimentary rocks have layers showing the deposition of sediment at different time periods.sedimentary rocks consists of lots of small grains. these grains maybe weakly and together so the rocks are often porous and maybe soft and crumbly.sedimentary rocks often have fossils trapped with in them.sedimentary rocks consist of layers of lots of small particals.


What are rocks that have visible layers and elongated mineral grains?

Maybe Sedimentary Rocks?


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.


Are sedimentary rocks easily eroded?

YES! Sedimentary rocks, like sandstone, limestone and chalk can easily be eroded. This is because the grains in them (different to particles) are further apart to the grains in rocks like igneous rocks. This means that the grains can easily be crumbled off, and you get left with sand.


Why do some sedimentary rocks contain rounded grains and some not?

Because some sedimentary rocks are made from different kinds of sediments.


What minerals are most common in detrital sedimentary rocks?

The most common minerals in detrital sedimentary rocks are quartz grains and clay.


Why do sedimentary rocks erode faster than others?

Sedimentary rocks tend to erode easily compared to other types of rocks as the grains within them are farther apart than the "grains" in, let's say, igneous rocks. As a result of this, the "grains" can be easily crumble. An example of this is sand.


Why do sedimentary rocks wear away faster than others?

Sedimentary rocks tend to erode easily compared to other types of rocks as the grains within them are farther apart than the "grains" in, let's say, igneous rocks. As a result of this, the "grains" can be easily crumble. An example of this is sand.


Is sedimentary rock sandy?

Not necessarily. There is a special class of sedmentary rocks, called sandstones, which are dominated by sand-sized grains. Other sedimentary rocks, such as shale, contain much finer grains.