Pangea breakup and northward drift of the Indian.
In 1912, Alfred Wegener, a German climatologist and geophysicist, made public his theory about Pangea. He suggested that in a remote past there was a supercontinent, Pangea, which broke up around 200 million years ago, and that the pieces drifted to give place to present continents. Although he submitted evidence to sustain his theory, such as the fitting form of the continents and climate.
In this chapter we review the paleogeographic and plate tectonic setting of the supercontinent of Pangea during the Early Permian (mid-Sakmarian) and the Late Permian (Kazanian). The paleogeographic reconstructions presented in Figs. 6 through 13 are based on the paleogeographIc maps assembled by the PALEOMAP Project.
Both fluctuated with size of the largest continent during the Pangea supercontinent cycle and can be quantified back to the Neoarchean. The tenure of Pangea was a time represented in the rock record by few zircons and few passive margins. Thus, previously documented minima in the abundance of detrital zircons (and orogenic granites) during the Precambrian (Condie et al., 2009a, Gondwana.
The supercontinent Pangea is comprised of Gondwana and Laurentia formed at about 300 - 180 Ma ago. The Amazonian craton margins probably were not envolved in the collisional processes during Pangea because it was embebed in Neoproterozoic materials. As consequence, Amazonian craton borders have no record of the orogenic processes responsible for the Pangea amalgamation. Related Articles: Open.
In the published research it’s shown that the eruption of hot volcanoes which tapped into the two LLSVPs or superplumes in the deep mantle come and go in a cyclic fashion, almost exactly synchronised with the 500 to 700 million year-long supercontinent cycle. Figure 1. A cartoon of the dynamic and coupled supercontinent-plume cycle model (after Li et al., 2019). (a) 850-600 Ma, formation of.
Ocean basin - Ocean basin - Evolution of the ocean basins through plate movements: Through most of geologic time, probably extending back 2 billion years, the ocean basins have both grown and been consumed as plate tectonics continued on Earth. The latest phase of ocean basin growth began just less than 200 million years ago with the breakup of the supercontinent Pangea, the enormous landmass.
But it wasn t until 1910 when Alfred Wegener scientifically considered the matter of a supercontinent which he called Pangea (Stokes, 1973). Since this time, scientists have argued for and against Wegener s explanation of Pangea. Today skeptics still argue the idea even in the face of overwhelming scientific data. Fossil, geologic and paleomagnetic data clearly validate Wegener s hypothesis.
