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Page "Proterozoic" ¶ 7
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Rodinia and was
Rodinia was probably formed between 1100 and 1000 million years ago and broke up again before 750 million years ago.
Rodinia was surrounded by the superocean geologists are calling Mirovia ( from Russian мировой, mirovoy, meaning " global "; Родина, rodina, meaning " motherland ").
Unlike later supercontinents, Rodinia itself was entirely barren.
This hypothesis stated that following the breakup of the early equatorial supercontinent ( Rodinia ), the earth's continents were totally covered in an ice age ( implying the whole planet was frozen at the surface to a depth of several kilometers ).
It is at least clear that, about 1, 000 830 Ma, most continental mass was united in the supercontinent Rodinia.
Inside the V was an ocean that opened up during the break-up of Rodinia, the Panthalassic Ocean, an ocean that became the early Pacific Ocean.
* ~ 1. 1 billion years ago, Baltica was part of the major supercontinent Rodinia.
A new rift opened that started to break apart the supercontinent Rodinia, which North America was then a part of.
Below Powell's unconformity the Grand Canyon Supergroup of rocks ( formed at an earlier age ) was uplifted, tilted, and then eroded during the Grenville orogeny, when the Rodinia supercontinent came together ( with the Australian subcontinent juxtaposed to what's now Arizona ).
The Grenville Orogeny was a long-lived Mesoproterozoic mountain-building event associated with the assembly of the supercontinent Rodinia.

Rodinia and first
The Panthalassic Ocean first opened 750 million years ago at the breakup of Rodinia, but the oldest Pacific Ocean floor is only around 180 Ma old.
The " Zipper rift " hypothesis proposes two pulses of continental " unzipping " — first, the breakup of the supercontinent Rodinia, forming the proto-Pacific ocean ; then the splitting of the continent Baltica from Laurentia, forming the proto-Atlantic — coincided with the glaciated periods.
It is however clear that intracratonic basins had developed in the northern parts of this supercontinent during the Cryogenian period ( 850-630 million years ago ), a first sign of continental break up ( other parts of Rodinia probably rifted off even earlier ).

Rodinia and supercontinent
At the onset of the Neoproterozoic the supercontinent Rodinia, which had assembled during the late Mesoproterozoic, straddled the equator.
The supercontinent, known as Rodinia, broke up around 600 Ma.
The supercontinent Columbia or Nuna formed during a period of 2. 0 1. 8 billion years and broke up about 1. 5 1. 3 billion years ago The supercontinent Rodinia is thought to have formed about 1 billion years ago and to have embodied most or all of Earth's continents, and broken up into eight continents around 600 million years ago.
The supercontinent Rodinia formed about 1. 1 billion years ago and broke up roughly 750 million years ago.
Plate tectonics brought the fragments of Rodinia back together in a different configuration during the late Paleozoic era about 300 million years ago, forming the best-known supercontinent, Pangaea.
* In deep ocean regions far from the supercontinent Rodinia or its remnants as it broke apart and drifted on the tectonic plates, which may have allowed for some small regions of open water preserving small quantities of life with access to light and for photosynthesizers ( not multicellular plants, which did not yet exist ) to generate traces of oxygen that were enough to sustain some oxygen-dependent organisms.
At this time the continents were bunched up in the Rodinia supercontinent.
Artist's conception of the supercontinent Rodinia.
In geology, Rodinia ( from the Russian " Родить ", rodit, meaning " to give birth ") is the name of a supercontinent, a continent which contained most or all of Earth's landmass.
Although Laurasia is known as a Mesozoic phenomenon, today it is believed that the same continents that formed the later Laurasia also existed as a coherent supercontinent after the breakup of Rodinia around 1 billion years ago.
By 900 million years ago ( in the early Neoproterozoic ) a triple junction formed as the supercontinent Rodinia started to rift apart.
These rocks were once part of the largest mountain chain the world has seen, a part of the ancient supercontinent of Rodinia.
The major events of this era are the formation of the Rodinia supercontinent, the breakup of the Columbia supercontinent, and the evolution of sexual reproduction.
Geologists have identified at least five separate events which have led to sediment deposition, including the Grenville orogeny ( the collision of continents that created the supercontinent Rodinia ) and the Appalachian orogeny during the formation of Pangaea.
The New Madrid Seismic Zone ( NMSZ ) is made up of reactivated faults that formed when what is now North America began to split or rift apart during the breakup of the supercontinent Rodinia in the Neoproterozoic Era ( about 750 million years ago ).
In the Late Neoproterozoic ( around 800 million years ago ) Baltica, Laurentia, and the cratons that would later become Gondwana together formed the supercontinent Rodinia.
*; 2003: The making and unmaking of a supercontinent: Rodinia revisited, Tectonophysics 375, pp. 261 288.

Rodinia and ;
Formation of new continental crust is linked to periods of intense orogeny ; these periods coincide with the formation of the supercontinents such as Rodinia, Pangaea and Gondwana.

Rodinia and formed
The New Madrid Seismic Zone is made up of reactivated faults that formed when what is now North America began to split or rift apart during the breakup of the supercontinent Rodinia in the Neoproterozoic Era ( about 750 million years ago ).
Together with continents Nena and Ur and some minor plates, Atlantica formed the supercontinent Rodinia about 1 Ga ago.

Rodinia and about
In contrast with Pangaea, little is known yet about the exact configuration and geodynamic history of Rodinia.
Little is known about the paleogeography before the formation of Rodinia.
After the break-up of Rodinia about 800 Ma, it is possible the continents joined again around 550 Ma.
Arctica joined with the continents Atlantica and Nena about one billion years ago to form the supercontinent, Rodinia.
o Models of supercontinents, such as Rodinia, rely on information about what parts of which continents were connected and orogenies in many cases provide rocks like ophiolites or exotic terranes which can be examined and compared to other continents.

Rodinia and 1
According to plate tectonic reconstructions, Rodinia existed between 1. 1 billion and 750 million years ago, in the Neoproterozoic era.
The rifting of Rodinia between 1 0. 5 Ga resulted in the formation of three new continents: Laurasia and East and West Gondwana, of which Atlantica became the nucleus of the latter.
*~ 1. 1 billion years ago ( Stenian ), Siberia became part of the major supercontinent of Rodinia.
For example, the supercontinent before Pannotia, Rodinia, existed ~ 1. 25 billion to ~ 750 million years ago-a mere 150 million years before Pannotia.

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