GEOLOGY
STRATIGRAPHY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Oldest to youngest
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Youngest to oldest
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Younger and Older layers can be found on top
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Younger and Older layers can be found on bottom
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Detailed explanation-1: -The principle of superposition states that the oldest sedimentary rock units are at the bottom, and the youngest are at the top. Based on this, layer C is oldest, followed by B and A. So the full sequence of events is as follows: Layer C formed.
Detailed explanation-2: -The layers in order are Cambrian, Ordovician, Silurian, Devonian, Carboniferous, (Mississippian and Pennsylvanian), Permian, Triassic, Jurassic, Cretaceous, Tertiary, and Quaternary. Sedimentary rock is the type of rock in which fossils are most likely to form.
Detailed explanation-3: -The oldest rock layers are at the bottom because they were laid down first. The landscape changed across the eons, adding more layers on top of older ones. The youngest rock layers are on top of the rest.
Detailed explanation-4: -The bottom layer of rock forms first, which means it is oldest. Each layer above that is younger, and the top layer is youngest of all.
Detailed explanation-5: -The oldest rock formation is, depending on the latest research, either part of the Isua Greenstone Belt, Narryer Gneiss Terrane, Nuvvuagittuq Greenstone Belt, Napier Complex, or the Acasta Gneiss (on the Slave Craton).