Limestone
Sandstone
The Granite
granite
Sandstone i believe
I live in a sandstone-rich area of Scotland and my house in fact is built of sandstone, as are several walls near it. There is also a sandstone quarry outside the town. It is basically a 'stone' (if you could call it that) which is made of sand, crushed together thousands of years ago. If you scrape it, sand comes off. If I wanted i could scrape my way into my house with a spoon. Throw a sandstone block on the ground and it will split into several pieces easily. Cracks do not usually stay in a sandstone block due to its nature - a crack will normally just split the block in 2. So to answer your question, sandstone CAN have cracks, but not big ones or it will just shatter into bits. Basically, no.
A clump. Unless they have undergone compaction and cementation in a process known as lithification. Then they would be classified as a sedimentary rock, maybe conglomerate, breccia, or sandstone.
sandstone is not harder than flint because sandstone breaks in to smaller pieces.
The Granite
Sandstone is a sedimentary rock and it is made of smaller pieces of rock and is pressed together
it is ground up into little pieces then glued back together, usually with pieces of different rocks mixes in. I have a nice sample of this that is layered: sandstone, pebble conglomerate, sandstone.
Sandstone.
If the sandstone is below the basalt layer, it is older. Though caution is advised, to make sure it is really a basalt layer and not an intrusion of gabbro. Other indicators that the sandstone is older is evidence of alteration to the sandstone where the two meet (called a "baked contact") and pieces of sandstone being found in the the basalt.
Shale and Sandstone
Gritstone, a hard course-grained sandstone, was used for grinding things to smaller pieces.
granite
consist of two assemblies of two pieces each.
Sandstone i believe
Sandstone rocks are formed from sedimentary rocks. It is when sedimentary rocks are broke down into small pieces.