What are bioclastic or organic sedimentary rocks made from?compacted remains of dead plants or animals recrystallization melting and solidification of magma

Bioclastic or organic sedimentary rocks are primarily composed of the compacted remains of dead plants and animals. These sediments accumulate in layers and, over time, undergo lithification, which involves compaction and cementation processes.

1. Bioclastic Sediments: These are formed from the debris of living organisms. For instance, limestone can form from the accumulated shells of marine organisms, while coal is formed from plant remains in swampy areas.

2. Organic Components: The main components are usually calcium carbonate (from shells) and organic matter (from plant or animal remains).

3. Melting and Solidification of Magma: This process is related to igneous rocks, not sedimentary rocks, and does not play a role in the formation of bioclastic or organic sedimentary rocks.

In summary, bioclastic or organic sedimentary rocks are made from the compacted remains of dead plants or animals, differentiating them distinctly from igneous processes.