(a) Define and explain the significance of the law of superposition which was first expounded upon by Nicholas Steno, a Dane, in 1669.
Answer to relevant Questions(a) Why are cross-beds (Fig. 5.4) very important sedimentary structures?The four main types of sandstone are illustrated in Fig. 5.8. Which is which, and why?In the above equation, what is the result of the loss of CO2?How are beds of salt formed?What does a conglomerate indicate about the energy conditions in the environment of deposition?
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