Kenorland

Kenorland was one of the earliest supercontinents on Earth. It is believed to have formed during the Neoarchaean Era ~2.7 billion years ago (2.7 Ga) by the accretion of Neoarchaean cratons and the formation of new continental crust. Kenorland comprised what later became Laurentia (the core of today's North America and Greenland), Baltica (today's Scandinavia and Baltic), Western Australia and Kalaharia.

Swarms of volcanic dikes and their paleomagnetic orientation as well as the existence of similar stratigraphic sequences permit this reconstruction. The core of Kenorland, the Baltic/Fennoscandian Shield, traces its origins back to over 3.1 Ga. The Yilgarn Craton (present-day Western Australia) contains zircon crystals in its crust that date back to 4.4 Ga.


Read more about Kenorland:  Formation of Kenorland, Breakup of Kenorland

Other articles related to "kenorland":

Temagami Greenstone Belt - Geology - Paleogeology
2.7 billion years old, dates back to the formation of the supercontinent Kenorland between 2.8 and 2.6 billion years ago ... Rifting of Kenorland began 2.45 billion years ago in Ontario with the formation of several large igneous provinces ... By the Paleoproterozoic era Kenorland had already rifted apart, and the Temagami greenstone belt formed a small part of the supercontinent Columbia starting 1.9–1.8 billion years ago ...
Breakup of Kenorland
... Paleomagnetic studies show Kenorland was in generally low latitudes until tectonic magma-plume rifting began to occur between 2.48 Ga and 2.45 Ga ... The protracted breakup of Kenorland during the Late Neoarchaean and early Paleoproterozoic Era 2.48 to 2.10 Ga, during the Siderian and Rhyacian ... The geological time period surrounding the breakup of Kenorland is thought by many geologists to be the beginning of the transition point from the Hadean to Early Archean deep-mantle-plume method of continent ...