pangaea - Cloudfront.net
... A Short History of Pangaea • Some 225 million years ago all the world's land masses were joined together into one ...
... A Short History of Pangaea • Some 225 million years ago all the world's land masses were joined together into one ...
Paleozoic Plate Tectonics Quiz
... a) Began with the supercontinent Pangaea and ended with the supercontinent Rodinia. b) Was the first era to come after the Precambrian. c) Was the second era of the Phanerozoic. d) All of these. ...
... a) Began with the supercontinent Pangaea and ended with the supercontinent Rodinia. b) Was the first era to come after the Precambrian. c) Was the second era of the Phanerozoic. d) All of these. ...
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... b. new convergent boundaries form after continents collide. c. heat builds up in Earth’s interior. d. continental lithosphere subducts. ______ 19. What causes a supercontinent to break apart? a. Heat inside Earth causes rifts to form in the supercontinent. b. The convergent boundary between two cont ...
... b. new convergent boundaries form after continents collide. c. heat builds up in Earth’s interior. d. continental lithosphere subducts. ______ 19. What causes a supercontinent to break apart? a. Heat inside Earth causes rifts to form in the supercontinent. b. The convergent boundary between two cont ...
Supercontinent
In geology, a supercontinent is the assembly of most or all of the Earth's continental blocks or cratons to form a single large landmass. However, the definition of a supercontinent can be ambiguous. Many tectonicists such as P.F. Hoffman (1999) use the term ""supercontinent"" to mean ""a clustering of nearly all continents"". This definition leaves room for interpretation when labeling a continental body and is easier to apply to Precambrian times. Using the first definition provided here, Gondwana (aka Gondwanaland) is not considered a supercontinent, because the landmasses of Baltica, Laurentia and Siberia also existed at the same time but physically separate from each other. The landmass of Pangaea is the collective name describing all of these continental masses when they were in a close proximity to one another. This would classify Pangaea as a supercontinent. According to the definition by Rogers and Santosh (2004), a supercontinent does not exist today. Supercontinents have assembled and dispersed multiple times in the geologic past (see table). The positions of continents have been accurately determined back to the early Jurassic. However, beyond 200 Ma, continental positions are much less certain.