Permian (286 to 245 mya)
Late permian pix
Vast deserts covered western Pangea during the Permian as reptiles spread across
the face of the supercontinent. 99% of all life perished during the extinction
event that marked the end of the Paleozoic Era. By the end of the Paleozoic
Era, most of the oceans that had opened during the breakup of Pannotia, were
consumed as the continents collided to form the supecontinent of Pangea.Centered
on the Equator, Pangea stretched from the South Pole to the North Pole, and
separated the Paleo-Tethys Ocean to the east, from the Panthalassic Ocean to
the west. During the Late Carboniferous and Early Permian the southern regions
of Pangea (southern South America and southern Africa, Antarctica, India, southern
India, and Australia) were glaciated.
The word "Pangea" means "all land". Though the formation
of this supercontinent marked the end of the Paleozoic Era, "Pangea",
albeit Pangea probably did not include all the landmasses that existed at that
time. In the eastern hemiphere, on either side of the Paleo-TethysOcean, there
were continents that were separated from the supercontinent. What is now North
and South China as well as parts of Turkey, Iran, Afghanistan, Tibet, Indochina
and Malaya (see map) are likely to have rifted away from the Indo-Australian
margin of Gondwana during the Upper Carboniferous to Lower Permian. These landmasses
together with the Chinese continent, moved northwards towards Eurasia, ultimately
colliding along the southern margin of Siberia during the late Triassic Period.
It was only after the collision of these Asian fragments that all the world's
landmasses were joined together in a supercontinent truly warranting of the
name "Pangea".
During the latest Paleozoic into the early Mesozoic, Pangaea spanned the equator. Several slices were removed from the northeastern margin of Gondwana and drifted across the Tethys Ocean to collide with Asia. Most notable were the Cimmerian blocks that included Turkey, Iran, Afghanistan, Tibet, and Malaysia. The western fringe of Pangaea was adjacent to a long subduction zone that formed the eastern margin of the Pacific "ring of fire".