A rock that is white and harder than chalk is likely to be marble. Marble is a metamorphic rock that is formed from limestone under high pressure and heat, making it harder and more durable than chalk, which is a soft sedimentary rock.
chalk
limestone or could be gypsum Could be chalk. Dip it in vinegar. If it fizzes, it might be a sedimentary carbonate rock like limestone or chalk. There is always a possibility it is another kind of sedimentary rock or possibly an extrusive igneous one. Testing is needed to be sure.
Chalk is a hard rock, with large lines of weakness so will erode by physical weathering and the sea.
Chalk, sands, clay, and glacial drift can all be found in an around the River Tillingbourne.
Chalk is primarily composed of calcium carbonate, a soft, white, porous sedimentary rock. It is typically formed from the shells of microscopic organisms called coccolithophores that have accumulated and solidified over millions of years.
No, limestone is harder than chalk. Limestone is a sedimentary rock composed mainly of calcite, whereas chalk is a soft, porous sedimentary rock composed mainly of calcium carbonate.
chalk
Chalk.
Chalk is a fossil itself and chalk is soft, and so while you might form a fossil; in it, it would not remain. Within chalk there is often harder rock - which sometimes does contain fossils.
limestone or could be gypsum Could be chalk. Dip it in vinegar. If it fizzes, it might be a sedimentary carbonate rock like limestone or chalk. There is always a possibility it is another kind of sedimentary rock or possibly an extrusive igneous one. Testing is needed to be sure.
well chalk is a white lime stone and limestone is sedimentry
The White Cliffs of Dover are made of chalk which is a sedimentary rock.
The white cliffs of Dover are composed of chalk.
Calcium carbonate, specifically chalk.
The common name for a chalk is simply "chalk". It is a soft, white, porous sedimentary rock used for writing or drawing on blackboards or sidewalks.
Chalk is a soft, white, porous limestone composed mainly of calcium carbonate. It forms over millions of years from the shells of tiny sea creatures called coccolithophores that settle to the bottom of the ocean. These shells accumulate and are compressed to form the chalk rock we use.
The material the cliffs are made from is CHALK