Science Quiz / 'P' in Geology

Random Science or Geology Quiz

Can you name the answers to these Geology questions where all of the answers begin with 'P'?

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Also try: 'N' in Geology
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This Geologic Era spanned from 541 to 252 million years ago, from the Cambrian radiation to the P/Tr extinction
A very coarse-grained igneous rock; usually from rapid crystal growth in the final stages of magma crystallization
The greatest extiction event in Earth's history occurred at the end of this Geologic Period
This Geologic Epoch is often colloquially known as the 'Ice Age'
A sedimentary particle between 4 and 64 mm in size; usually rounded by abrasion
A Hawai'ian term for a lava flow with a smooth or ropy surface texture when cooled (#1 above)
This supercontinent lasted 300 to 200 million years ago and included nearly all land present at the time
The volume of pore space in a rock or soil, or the percentage of volume made up by pore space
Any current major or secondary tectonic plate*
A fast-moving current (up to 450 mph) of hot gas, tephra, and volcanic ash (up to 1000°C)
The study of the changes in Earth's life over space and time using rock units and their fossils
A mass of stream sediment that contains an economically significant concentration of mineral particles
An ultramafic, coarse-grained (intrusive) igneous rock that contains abundant olivine (hence the name)
The fossil in #2 above, which is composed of opal that has replaced woody material
A group of inosilicate minerals, including diopside and augite, which are common in mafic igneous rocks
Refers to an area adjacent to a glacier or ice sheet
A vesicular volcanic glass of granitic composition; some kinds have enough pore space to float on water (#3 above)
An extension of land mostly surrounded by water but still connected to the mainland; like Italy or Kamchatka
Two minerals with the same chemical composition but different crystal structure
Members of this animal phylum (#4 above) have no tissues or organs; they're often nicknamed 'sponges'

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