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Iapetus Ocean: Quiz


Question 1: This led him to his ________ hypothesis.
PangaeaRodiniaSupercontinent cycleEarth

Question 2: The ocean disappeared with the Caledonian, Taconic and Acadian ________, when these three continents joined to form one big landmass called Laurussia.
OrogenyGeologyPlate tectonicsIgneous rock

Question 3: Because the Iapetus Ocean was positioned between continental masses that would at a much later time roughly form the opposite shores of the ________, it can be seen as a sort of precursor of the Atlantic.
Arctic OceanAtlantic OceanPacific OceanIndian Ocean

Question 4: In many spots in Scandinavia ________ dikes are found with ages between 670 and 650 million years.
BasaltIgneous rockLavaFlood basalt

Question 5: [9] In ________, the Long Range dikes are also thought to have formed during the formation of the Lapetus Ocean.
Newfoundland and LabradorNewfoundland (island)Nova ScotiaCanada

Question 6: Southwest of the Iapetus a volcanic island arc evolved from the early ________ (540 million years ago) onward.
CambrianCambrian explosionGeologic time scaleDevonian

Question 7: The Iapetus Ocean was therefore named for the titan Iapetus, who in ________ was the father of Atlas.
ApolloHeraGreek mythologyMuse

Question 8: The same happened further north and east, where Avalonia and Baltica began to move towards Laurentia from the ________ (488-444 million years ago) onward.
CarboniferousSilurianGeologic time scaleOrdovician

Question 9: This volcanic arc was formed above a ________ where the oceanic lithosphere of the Iapetus Ocean subducted southward under other oceanic lithosphere.
Mohorovičić discontinuityMid-ocean ridgeConvergent boundarySubduction

Question 10: The Iapetus Ocean was an ocean that existed in the Neoproterozoic and Paleozoic eras of the ________ (between 600 and 400 million years ago).
Gregorian calendarCalendarJulian calendarGeologic time scale


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