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1
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The science of determining the relative order of past events
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2
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An underwater mountain range, formed by plate tectonics
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4
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The rigid outer part of the earth, consisting of the crust and upper mantle
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6
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The earliest 4.06 billion years of Earth's history and before the current Phanerozoic Eon
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7
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Matter that settles to the bottom of a liquid
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8
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A rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.
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10
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A basic law of geochronology, stating that in any undisturbed sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it
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12
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Be broken by a fault or faults
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16
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Hot molten or semifluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this
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17
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The science that deals with the earth's physical structure and substance, its history, and the processes that act on it
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19
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An indefinite and very long period of time
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20
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A long and distinct period of history
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21
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A length or portion of time
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25
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An idealized cycle of processes undergone by rocks in the earth's crust, involving igneous intrusion, uplift, erosion, transportation, deposition as sedimentary rock, metamorphism, remelting, and further igneous intrusion.
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26
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The outermost layer of rock of which a planet consists
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27
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The various mechanical and chemical processes that cause exposed rock to decompose
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29
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Formed through the cooling and solidification of magma or lava.
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30
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The state or process of a species, family, or larger group being or becoming extinct
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31
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A fossil that is useful for dating and correlating the strata in which it is found
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32
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The geological process in which sediments, soil and rocks are added to a landform or land mass
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