Establishing how tectonic plates have moved since deep time is essential for understanding
how Earth's geodynamic system has evolved and operates, thus answering longstanding …

Supercontinents signify self-organization in plate tectonics. Over the past~ 2 billion years,
three major supercontinents have been identified, with increasing age: Pangaea, Rodinia …

A total of 4344 magmatic U-Pb ages in the range 2300 to 800 Ma have been compiled from
the Great Proterozoic Accretionary Orogen along the margin of the Columbia/Nuna …

Supercontinent Pangea was preceded by the formation of Gondwana, a “megacontinent”
about half the size of Pangea. There is much debate, however, over what role the assembly …

Accurate spatial models of tectonic plates and geological terranes are important for
analyzing and interpreting a wide variety of geoscientific data and developing compositional …

Large-scale continental rifting and large igneous provinces (LIPs) have played important
roles in the breakup and dispersal of supercontinents Pangea and Rodinia. Previous …

Since the Archean, secular change in orogenic style is demonstrated through evolution of
metamorphic conditions and geochemical proxies. Linked to orogenic style is the amount of …

The proposal that a Paleo-Mesoproterozoic supercontinent, Columbia, preceded the
existence of Rodinia was forwarded in 2002. A similar proposal that same year provided a …

Abstract The mid-Proterozoic (ca. 1850–850 Ma) is a peculiar period of Earth history in many
respects: ophiolites and passive margins of this age are rare, whereas anorthosite and A …

The geological timescale before 720 Ma uses rounded absolute ages rather than specific
events recorded in rocks to subdivide time. This has led increasingly to mismatches between …