Sedimentary rocks are formed by the deposition of mud, clay, sand and other small particles on the surface of the Earth. Sedimentation can occur in many different environments, inc...
Different Sedimentary Rocks
If you've ever visited the Grand Canyon or been by any river or cliff where you observed horizontal stripes in the rocks there, then you have seen sedimentary rock. Sedimentary rocks always form where they has been water, so they provide a geological...
Sedimentary rocks are types of rock that are formed by the deposition of material
at the Earth's surface and within bodies of water. Sedimentary rocks have also ...
Breccia is a clastic sedimentary rock that is composed of large (over two
millimeter diameter) angular fragments. The spaces between the large fragments
can be ...
In these conditions the sediment is cemented into rock
: sand becomes sandstone and clay becomes shale . This is common around the edges of the Earth's lithospheric plates, and for more about that, see Plate Tectonics in a Nutshell .)
These same ancient shallow seas som... More »
Sedimentary rocks are formed by sediment that is deposited over time, usually as
layers at the bottom of lakes and oceans. This sediment can include minerals, ...
Sedimentary rocks are made when sand, mud and pebbles get laid down in
layers. Over time, these layers are squashed under more and more layers.
Dec 15, 2014 ... Sedimentary rocks are formed from pre-existing rocks or pieces of once-living
organisms. They form from deposits that accumulate on the ...
Jun 16, 2014 ... Sedimentary rock, rock formed at or near the Earth's surface by the accumulation
and lithification of sediment (detrital rock) or by the ...
When the Earth was first forming, about six billion years ago, there weren't any
sedimentary or metamorphic rocks, only igneous rocks like quartz that formed ...