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Sedimentary Rocks...
Sedimentary Rocks...
What is a Sedimentary Rock exactly?
What is a Sedimentary Rock exactly?
A sedimentary rock is a rock that is formed from the remains of different types of living things or by the weathering of pre-existing rocks. They form from accumulated layers of minerals and deposits that eventually cause cementation to whatever it has covered. These rocks are mostly known for containing different types of fossils such as water-type fossils like shells and coral, plant life, and mammals. Because of this, we are able to have documentation of the evolutionary advancement that has happened to organisms over all these years, whether it's plants, animals or insects.
Different Fossil Types...
Different Fossil Types...
- Permineralization: When bones or teeth leave a cast in the rock which occurs when the pores of plant materials, bones, and shells are impregnated by mineral matter from the ground, lakes, or oceans.
2. Trace Fossils: This is basically a trace of animal activity such as footprints.
2. Trace Fossils: This is basically a trace of animal activity such as footprints.
3. Casts and Molds: When an impression is made by skeletal structures.
3. Casts and Molds: When an impression is made by skeletal structures.
4. Amber: When tree sap undergoes extreme heat and pressure it becomes copal that transitions into amber.
4. Amber: When tree sap undergoes extreme heat and pressure it becomes copal that transitions into amber.
5. Soft Tissue: Discovered by Mary Schweitzer, this was able to let us know the genders of the remains found.
5. Soft Tissue: Discovered by Mary Schweitzer, this was able to let us know the genders of the remains found.
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