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Contents of Why study the ages of rocks?

• The keys to explaining process are
• The sequence of events
• The time required for each step
• Geologists use rocks to tell time in two ways
• In the field, they can look at a landscape and decipher the order of events that produced it
• To actually know "when" an event occurred, or to know when a rock formed, requires complex laboratory analysis

Why study the ages of rocks?