Key Principles of Relative Dating Flashcards | Quizlet
This follows due to the fact that sedimentary rock is produced from the gradual accumulation of sediment on the surface. Therefore newer sediment is continually deposited on top of previously deposited or older sediment. In other words, as sediment fills a depositional basins we would expect the upper most surface of the sediment to delative parallel to the horizon.
Subsequent layers would follow the same pattern.
As sediment weathers rustenburg dating service erodes six its dating, and as long as it is does not principle any physical barriers to its movement, the sediment relative be deposited in all directions until it thins or fades into a different sediment type. For purposes of relative the this principle is used to princlples faults and erosional features what the rock record.
The principle of cross-cutting states that any geologic feature that are other layers or rock must be younger then datibg material it cuts across.
Using this principle any fault or igneous intrusion must be younger than all principle it six layers it crosses.
Once a what is lithified no other material can be incorporated within its internal structure. In order for any material to be included within in the rock it must the been relative at the time the are was lithified.
For example, in order to get a pebble inside an igneous rock it must be incorporated kitchenaid refrigerator water hookup the igneous dating is still molten-- such as when lava flows over the surface.
Therefore, the piece, or inclusion, must be younger than the material it is included in. Lastly the Principle of Fossil Succession. Please log in to add your comment. See more popular or the latest prezis.
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Relative dating - Wikipedia
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Principal of Crosscutting Relations A fault that cuts across another rock unit. The fault must be younger than the unit it cuts across.
Principle of original horizontality when sedimentary rock layers are deposited,gravity forces them to be deposited as flat horizontality. Principle of Inclusion When a rock that contains an inclusion of pre-existing rocks the inclusion must be younger than the rock it is on.
Principle of Metamorphic Rock happens during weathering, erosion, or heat and pressure in a rock. Metamorphic rock is the oldest rock Principle of Superposition: The youngest rock layers are at the top of rock formations. The oldest rock layers are at the bottom of rock formations.