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1
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Ridges pieces that together make up earths surface
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3
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A devision of time that is a subdevision of a period
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6
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An indefinitely long period of time; age
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8
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A length or portion of time
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9
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A brake and a body of rock
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13
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One of the three main rock groups
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15
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Law that states that in a sequence of rocks the youngest layer is on top and oldest on bottom
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17
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Impression of a prehistoric organism
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18
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the first geological time period in the Paleozoic era!
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20
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A method of dating rocks and minerals
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21
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Also called lithospheric plate
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22
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The outermost solid shell of a rocky planet
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26
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A result of a transformation of a pre-existing rock
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27
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Underwater mountain system
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28
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Formation of new areas of oceanic crust
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30
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What is he process of determining an age in archaeology
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31
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A long and distinct period of history
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32
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What is the science of determining the order of past events
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