1. Chapter 6 – Sedimentary and Metamorphic Rocks

2. Formation of Sedimentary Rocks
Much of Earth is covered in sediments
Sediments are pieces of solid material that have been deposited on Earth’s surface by wind, water, ice, gravity, or chemical precip
When these sediments get “cemented” together, they form sedimentary rocks
This occurs from weathering and erosion

3. Weathering
This is the process where the Earth’s crust is continually getting worn away by a set of physical and chemical processes
Chemical weathering is when minerals in a rock are dissolved or otherwise chemically changed
Physical weathering is when minerals remain chemically unchanged – they just break off
Weathering produces rock and mineral fragments known as clastic sediments
These sediments range in size

4. Evidence of Past Life
During lithification, parts of organisms are replaced by minerals and turned into rocks