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large igneous provinces
large volumes of basaltic extrusive/intrusive rock created by other than normal seafloor spreading. can be ocean/continental crust or both
plateaus
lava eruption from plumes on continents
features of plateaus
1. basalt =entire rock suite
2. eruption=subaerial (in air) with only local subaqueous condition
3. each plateau=formed with short period of time (less tahn 1m years)
correlation with periods of major rifting (continents breaking apart)
Laki
iceland
14.7 KM3
primarily fluorine
lower temp by 1 for a year
greatest erupted volume of basalt
greatest climate change
columbia river plateau
175000 KM3, 12000x than Laki
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