Clastic rocks have a 'clastic texture', which means they consist of clasts. The 3D orientation of these clasts is called the fabric of the rock. Between the clasts the rock can be composed of a matrix or a cement (the latter can consist of crystals of one or more precipitated minerals). The size and form of clasts can be used to determine the velocity and direction of current in the sedimentary environment where the rock was formed; fine, calcareous mud only settles in quiet water, while gravel and larger clasts are only deposited by rapidly moving water.[10][11] The grain size of a rock is usually expressed with the Wentworth scale, though alternative scales are used sometimes. The grain size can be expressed as a diameter or a volume, and is always an average value - a rock is composed of clasts with different sizes. The statistical distribution of grain sizes is different for different rock types and is described in a property called the sorting of the rock. When all clasts are more or less of the same size, the rock is called 'well-sorted', when there is a large spread in grain size, the rock is called 'poorly sorted'
Detrital rocks are formed by pre-formed particles from the ground. ! :)
Organic Sedimentary Rocks are formed from remains of plants and animals.
that is definitely true!
False it can also form from sedimentary rock.
False
Detrital rocks are formed by pre-formed particles from the ground. ! :)
False. The terms folidated and nonfoliated apply to metamorphic rocks.
Organic Sedimentary Rocks are formed from remains of plants and animals.
that is definitely true!
no its not
answer:true
False it can also form from sedimentary rock.
It is true that the composition of a sedimentary rock depends upon the composition of the rocks and living things its sediments come from. Sedimentary rocks form through lithification.
False
it is usually found in sedimentary rocks.
Yes, it is true. Sediments get blown together by wind, and then layer on top of each other. Over time, there's lots of pressure, and the lower sediments become sedimentary rocks.
That is false. The 3 main types of rocks are igneous, sedimentary, and metamorphic