The world, Early Devonian, 400 Ma, Global Paleogeographic Views of Earth History, NAU
The world, Early Devonian, 390 Ma, PALEOMAP Project
The world, Late Devonian, 370 Ma, Global Paleogeographic Views of Earth History, NAU
North America, Early Devonian, 400 Ma, Paleogeography and Geologic Evolution of North America, NAU
North America, Middle Devonian, 385 Ma, Paleogeography and Geologic Evolution of North America, NAU
North America, Late Devonian, 360 Ma, Paleogeography and Geologic Evolution of North America, NAU
North America in the Devonian Period
North American Devonian Rocks (dark blue)
Devonian, Palæos
Devonian, Wikipedia
The Devonian, Paleontology Portal
The Devonian, University of California Museum of Paleontology
Geologic Time Table, Seafriends
See general sources above.
Early Devonian Climate, 400 Ma, PALEOMAP project
Middle Devonian Climate, 380 Ma, PALEOMAP project
Late Devonian Climate, 360 Ma, PALEOMAP project
Devonian Life, Palæos
Life of the Devonian, University of California Museum of Paleontology
The Devonian Period: The Age of Fish, Fossil-Facts-and-Finds.com
Devonian Fossils, Fossil Museum
Late Devonian Extinction, Wikipedia
Laurentia, Baltica and the Avalonia terrane come together to form the supercontinent of Euramerica, also known as Laurussia. The Iapetus Ocean finally disappears.
Both Euramerica and Gondwana begin moving northward. Subduction zones form around the supercontinents. A subduction zone in the Rheic Ocean between the two supercontinents will eventually bring them together near the end of the Carboniferous Period.
Ocean basins in the Rheic Ocean such as the Devonian Basin and the Saxothuringian Basin will later form the sedimentary rocks of Europe.
The Caledonian orogeny (mountain building) continues which began as far back as the Ordovician Period. This orogeny produced the Caledonide Mountains (the Caledonides). Rocks from these mountains are now found in Ireland, Scotland, Greenland, Scandanavia, Poland, northern Germany, and central Europe.
Acadian orogeny creates the northern Appalachian mountains between New York and Newfoundland, Canada.
Volcanoes form in southern Euramerica in what is today eastern North America. These include Sugarloaf Mountain (New Brunswick) and Mount Pleasant Caldera (New Brunswick).
Subduction zones create several volcanic island arcs. These include the Antler volcanic island arc northwest of Euramerica (west of North America today), the volcanic arc that includes Kazakhstania, and a new arc forming east of Gondwana.
Antler orogeny begins as the Antler volcanic islands collide with Euramerica in what is today Nevada.
The Siberia continent swings into the northern hemisphere to the north of Euramerica.
A new volcanic island arc begins forming northwest of Euramerica that will eventally form the Klamath mountain terranes of California.
Armorica, now part of France, which had rifted off Gondwana during the Ordovician or Silurian period, begins colliding with southern Euramerica. This was the beginning of the Variscan orogeny, which continued building mountains into the Carboniferous Period.
La Moinerie crater impact event, Canada.
Nicholson crater impact event, Canada, was Devonian or later.
Brent crater impact event, Canada.
Elbow crater impact event, Canada.
Kaluga crater impact event, Russia.
Ilyinets crater impact event, Ukraine.
Siljansringen impact event, Sweden.
Large Woodleigh crater impact event, Australia.
Flynn Creek crater impact event, Tennessee.
Late Devonian Extinction, one of five major biological extinction periods. Wikipedia.
© 2009, Mr. Varner.
