Rodinia: Perbedaan revisi

Loncat ke navigasi Loncat ke pencarian
1.778 bita ditambahkan ,  11 tahun yang lalu
 
== Formasi ==
{{terjemah|Inggris}}
Rodinia terbentuk sekitar 1.3 miliar tahun lalu dari tiga atau empat [[benua]].
Rodinia terbentuk sekitar 1.3 miliar tahun lalu dari tiga atau empat [[benua]], an event known as the [[Grenville orogeny]].<ref name="peripatus">{{cite web | url = http://www.peripatus.gen.nz/Paleontology/Rodinia.html | title = Rodinia | accessdate = 2006-03-10}}</ref> The absence of fossils of hard-shelled organisms and reliable [[paleomagnetism|paleomagnetic]] data make the movements of continents earlier in the [[Precambrian]], prior to this event, uncertain. (See [[Columbia (supercontinent)]] for one possible reconstruction of an earlier supercontinent.)
 
The arrangement of Rodinia has been hypothesized using paleomagnetic data from the [[Seychelles]] islands and [[India]] and the Grenville mountain belts, which were formed by the Grenville orogeny and span multiple modern continents, as references.<ref name="science" /><ref name="peripatus" />
 
Although the details are disputed by [[paleogeography|paleogeographers]], the continental [[craton]]s that formed Rodinia appear to have clustered around [[Laurentia]] (proto-[[North America]]), which constituted Rodinia's core.
 
It appears that the east coast of Laurentia lay adjacent to the west coast of [[South America]], while a conjoined [[Australia]] and [[Antarctica]] seem to have lain against the proto-North American west coast. A third craton, what would become north-central [[Africa]], was caught in between these two colliding masses.<ref name="scotese">{{cite web | url = http://www.scotese.com/info.htm | last = Scotese | first = Christopher R. | title = More Information About the Late Precambrian | work = Paleomap Project | accessdate = 2006-03-10}}</ref>.
 
Other cratons such as the Kalahari (southern Africa), the Congo (west-central Africa), and the San Francisco (southeastern South America), appear to have been separate from the rest of Rodinia.
 
== Lihat pula ==
9.612

suntingan

Menu navigasi