They had various origins
Most rocks and pebbles do not glow.
the sample was transported by a glacier
A globe is the most accurate representation of the earth.
The Seismic Moment Scale is the most accurate measurement of an earthquake's magnitude.
Sedimentary rock, possibly conglomerate.
Conglomerate is made up of rounded pebbles cemented together. The pebbles have been rounded by the action of moving water. This could be from a river or stream or from waves on a long ago beach.Because they have been transported by water the pebbles may be from a wide variety of rock types. The size of these rock fragments is over 2 mm in diameter.After the pebbles have been deposited they are compacted by the sediments that pile up on top of them. Over very long periods of time the pebbles become cemented together by minerals. Silica, calcite, and iron oxides are the most common cementing minerals.The rounded rock particles in the conglomerate are easily visible to the naked eye.Conglomerate is often much harder and resistant than the sandstones and shales that surround it. Conglomerate is scientifically valuable because the individual stones are samples of the older rocks that were exposed as it was forming---important clues about the ancient environment.
Most rocks and pebbles do not glow.
sand
pebbles,
The three most common clastic sedimentary rocks are: - conglomerate-sandstones-shale
Pebbles are most often found near rivers and lakes. These stones are usually tumbled in fresh water until their edges are smooth.
What is most accurate about communication
conglomerate
conglomerate
Conglomerate is one of two similar rocks not to be confused. The large 'grains' are rounded as a result of their formation, and indeed the formation of the rock. Conglomerate is not to be confused with Breccia, a similar rock formed in very different circumstances. Breccia fragments tend to be smaller, but most of all are always angular.
Conglomerate, Sandstone and Shale are the three most common clastic sedimentary rocks.
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