Earth science help!
Ripple marks, mud cracks and fossils are all characteristics of:
Sedimentary Rocks
Metamorphic Rocks
Igneous Rocks
Minerals
Cherts and geodes can be found in:
Granite
Volcanoes
Limestone
Silica
These rocks are often classified by their composition and texture:
Sedimentary
Metamorphic
Igneous
Minerals
These rocks can be classified as regional or contact:
Sedimentary
Metamorphic
Igneous
Minerals
The unique characteristics of sedimentary, igneous and metamorphic rocks tell us about:
how, why and where a rock formed
hot spots around the Earth
weathering
movement of inorganic materials