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| Jurassic |
Period of geological time about 213 - 144 million years ago. |
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| Magma |
Molten material that makes up Earth's crust. |
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| Mature |
When source rock starts to generate hydrocarbons. |
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| Miocene |
Fourth division of Tertiary period spanning a time interval from 26 to 12 million years ago. |
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| Oligocene |
Third division of Tertiary period spanning an interval from about 40 to 25 million years ago. |
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| Pay Zone |
Stratum of rock in which hydrocarbons are found. |
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| Permeable |
Cracks and pore spaces between the rock particles (such as porous sandstone or fractured limestone) are interconnected and are large enough to permit fluid movement. |
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| Permian |
Period of geological time about 285 - 248 million years ago. |
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| Plate Tectonics |
Earth's solid crust is broken up into about a dozen semi-rigid plates, boundaries of which are zones of tectonic activity. |
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| Play |
Group of fields with similar trap structures / reservoir rock. |
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| Pleistocene |
Division of Quaternary period, also known as Ice Age. |
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| Pliocene |
Fifth and most recent division of Tertiary period on geologic time scale from about 12 million to 2 million years ago. |
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| Precambrian |
Rocks older than 600 million years. Earliest division of time for which rock strata are recognized. |
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