GEOL 488 Quiz 3 Key Dates and Locations

Age of CAMP (Central Atlantic Magmatic Province)

Latest Triassic, ~200 Ma

Age of Triassic period

251.9 Ma — 201.4 Ma.

Age of breakup of Pangea

Occured from 240 Ma (Mid-Triassic) — 120 Ma (Late Cretaceous)

Age of closure of Tethys ocean

90 Ma (late Cretaceous)

Age of pre-break-up rocks – Rodinia Supercontinent

2400 - 800 Ma

Age of rifting of supercontinent – passive trailing margin

750 - 360 Ma

Age when Western terranes emerge and some subduction starts (Antler Arc)

360 - 250 Ma

Age when island arcs accrete & closure of marginal oceans

230 - 185 Ma

Age of major period of crustal shortening

180-100 Ma

Age of sliding northward with minor accretion and major extension

85 - 45 Ma

Age of volcanism, magmatic arc, & subduction

40 - 0 Ma

Age of western part of Rodinia (metamorphic and granitic rocks)

2.4 – 1.8 Ga

Age of Antler Arc

Permian (~290 Ma) to Triassic (~240 Ma)

Age of intermontane accretion

Early Jurassic (~180 Ma)

Age of Wrangellia (Insular) accretion

Late Jurassic (~160 Ma)

Age of Wrangellia (Insular) accretion & oblique convergence

Early Cretaceous (~145 Ma)

Age of Kaskaskia megasequence

Early Devonian— Late Mississippian

Location of Catskill wedge

Michigan to Maine

Location of Elk Point Basin

Alberta, Sask, Manitoba, USA

Age of Late Devonian Extinction

372 million years ago (Frasnian through Famennian)

Location of Leduc stromatoporoid reefs

West Central Alberta— Edmonton, Calgary area

Age of Kaskaskia II

Early Carboniferous (Mississippian)

Age of Absaroka megasequence

Pennsylvanian — Early Jurassic (~145 Ma)

Location of Absaroka megasequence cyclothems

Joggins, NS

Age of the Great Dying

End-Permian, ~251.9 Ma

Location of phosphoria formation

Wyoming, Idaho - SW USA

Location of McConnell Thrust

east of Calgary

Age of Ancestral Rockies

Late Paleozoic, ~300 Ma

Age of Permo-Jurassic quiescence

Early Mesozoic: Triassic ∼ 250 Ma

Age of Laramide orogen

K—T Boundary, 65 Ma

Age when Kula plate splits in two (forming Kula and Farallon)

85 Ma (Late Cretaceous)

Age when Kula and N. American plate start to couple together

65 Ma (K—T Boundary)

Age when Kula plate disappears

50 Ma (Eocene)

Age of slab window formation (Kula-Farallon ridge subduction)

Late Cretaceous to Mid-Miocene

Age of hinterland extension (during Kula plate)

Early Cenozoic; ~55Ma

Age of SW USA basin & range province extension

~25 Ma