Breccia is formed in a very similar way as conglomerate. The difference is, is that breccias fragments
are sharper, and angular. These fragments have not been eroded by water, glaciers, or wind long enough to be rounded
and smoothed. This form of sedimentary rock is formed by different pebbles, and stones cementing together. Cementing
is a clastic sedimentary rock. It is similar to breccia; forming from the cementing of pebbles. It is formed
by river movement and/or other water movement. The cementing agents for conglomerate
are the same as breccia. CaCO3
The pebbles in conglomerate are more rounded
than the stones found in breccia. This is one of the features that makes them different.
is a non-clastic sedimentary rock. It is produced by the mineral calcite, and sediment. The calcite can be gotten from the
water in the ocean, or it can be formed from sea creatures that secrete lime; algea and coral. Limestone will fizz if acid
is put onto it.
is common table salt. Believe it or not. it is formed when salty lakes or sea beds dry up. When the water evaporates, it causes
the salt to precipitate; forming the salt crystals. it is usually colorless, but it can also be a reddish color due to iron
oxides in the water where it was formed.
is a sedimentary rock that forms when clay is compacted together by pressure. Shale is used to make bricks, and other meterial
that is fired in a kiln.it can be any color, but is generally greenish grey, to grayish black. It is relatively soft, and
has a greasy soft feel when it is freshly exposed, but hard and brittle when dry. Shale usually splits into thin sheets or