what is sedimentary rocks?

Question

please.this is for a project.i need help!!!!!!!!!!!!!!!!!1

Answer 1

Sedimentary rocks are formed when the material is laid out in layers. It only becomes rock when the material sticks together or when it is put under pressure. The most well know sedimentary rock is limestone. It was used to build the Egyptian Pyramids and it can be dissolved by the carbolic acid found in most soda.

According to Wikipedia: http://en.wikipedia.org/wiki/Sedimentary_rocks
"A Sedimentary rock is one of the three main rock groups (along with igneous and metamorphic rocks) and is formed in four main ways:

by the deposition of the weathered remains of other rocks (known as 'clastic' sedimentary rocks);
by the accumulation and the consolidation of sediments;
by the deposition of the results of biogenic activity; and
by precipitation from solution.

Sedimentary rocks include common types such as chalk, limestone, sandstone, clay and shale. Sedimentary rocks cover 75% of the Earth's surface. Four basic processes are involved in the formation of a clastic sedimentary rock: weathering (erosion)caused mainly by friction of waves, transportation where the sediment is carried along by a current, deposition and compaction where the sediment is squashed together to form a rock of this kind."

Answer 2

positive - takes position continually - they become metamorphic (replacing). and how? A volcano might want to arise by a collection of sedimentary rock - or sedimentary rock might want to get some distance down in the crust of the earth and be heated. quite often besides the undeniable fact that it truly is because a huge batholith or volcano come alongside and chefs an entire portion of sedimentary rocks.

Answer 3

They're rocks that form in flat layers from sediment accumulating. Sandstone is a very common one. It gets formed by particles of sand accumulating on the bottom of a lake (or similar body of water), eventually building up over time and eventually building up enough pressure to turn into a rock.

A lot of other sedimentary rocks, like siltstone, mudstone, conglomerate, etc. are formed in more or less the same way, but with different-sized particles.

Limestone is basically the same deal, except that it's made from calcium carbonate, which comes from pieces of seashells building up on the floor of the sea.

There are other sorts of sedimentary rocks, too, but that should get you started.

Answer 4

A sedimentary rock consists of smaller pieces or grains of other rocks that have been weathered and cemented together by calcium carbonate or something similar (sandstone) or compacted, or both (lithofication). They usually they form in layers, younging to the top. Other types of sedimentary rocks can be slate, formed from mud and silt, or limestone formed from calcareous muds.

Answer 5

Sediment. Is the layers you can see if you cut a piece out of a cliff. The grand canyon is a perfect example.

Answer 6

haha we learened about sedementary rocks ; their like a type of rock like metamorphic & igneous
sandstone
limestone
shale
conglomerate
gypsum
[those are all some kinds]
whoa i feeel intellagant [=