Presentation on theme: "Time and Geology. Relative Age Dating In trying to understand the creation of the geology of an area prior to the 20 th century techniques, a method referred."— Presentation transcript:
Relative Age Dating In trying to understand the creation of the geology of an area prior to the 20 th century techniques, a method referred to as Relative Age Dating was used. Relative Age refers only to the order (i.e. older or younger) of particular events, not the actual age of an event. Relative Age Dating is process involving the application of good observation skills and common sense to deduce the sequence of events in a particular area. True age is not relevant.
Principle of Original Horizontality This principle is based upon the observation that sediment usually accumulates or is deposited in horizontal layers
The Principle of Faunal Succession This principle proposes that fossil assemblages (groups of fossils) succeed one another through time in a regular and predictable order, from least complex to most complex.
So what has happened here? What is the oldest rock? What is the youngest rock?