#rodinia

[geologyin-blog]

Earth’s history is marked by the periodic assembly and breakup of vast supercontinents—massive landmasses that once united nearly all the continents into singular entities. Major supercontinents that have existed on Earth: Vaalbara, Ur, Kenorland, Columbia, Rodinia, Pannotia, Gondwana, Laurasia, and Pangaea.

Earth Supercontinents: Rodinia, Gondwana, Pangea

Earth’s history is marked by the periodic assembly and breakup of vast supercontinents —massive landmasses that once united nearly all the c

[wisdom-and-such]

Before Pangea, it’s thought there was another supercontinent, Rodinia. In fact, there have been a cool dozen proposed. Evidence suggests that, left to its natural course, Earth will have it’s next supercontinent around 200 million years from now. (but, I’m pretty sure we’ll have taken full autonomy over our planets plate tectonics long before then!)

https://www.ranker.com/list/the-earth_s-known-supercontinents/analise.dubner

[earthstory]

Folded and warped These sedimentary rocks in the southern Australian outback date from the latest Precambrian, and were deposited some 540 million years ago in a basin, before being uplifted into a mountain range and eroded into soft hills. The region is known as the Adelaide Rift Complex (or to use an older, now mostly abandoned, vocabulary geosyncline) and flows from the flinders ranges, through the Fleurieu Peninsula (of wine growing terroir fame) southwards to Kangaroo Island.

The original sediments were deposited on Australia's eastern edge as Pangaea's precursor supercontinent Rodinia broke up between 870 and 500 million years back, and they encompass the first complex multicellular organisms found so far in the fossil record, the enigmatic Ediacaran fauna (see http://on.fb.me/1BlFejb). As the supercontinent rifted huge basins opened that became sediment traps for the products of rivers and glaciers. At their thickest they stretch some 24km deep, and their lithology is of marine sandstones, limestones and shales. At the end of the Cambrian, between 514 and 500 million years ago they were squished and baked in a mountain building event (known as the Delamarian orogeny), and the remaining hills are but the root stumps of a mighty range. The basin inverted into a mountain range in response to some huge tectonic pressure. The area was also crucial in demonstrating the reality of the Snowball Earth events, aka the Marinoan and Sturtian glaciations, in which our whole planet more or less was covered in deep ice. Rocks in the area had striations (scratches) caused by rocks stuck onto the bottom of a glacier grinding across the, and had magnetic signatures indicating that they were close to the equator when this happened. Loz Image credit: Digital Globe, field of view around 160 square km.

[ask-andante]

@conflitdecanard

[yoicharityauction]

CONTRIBUTOR FILE - RODINIA

see rodinia’s work on tumblr @rodiniaorzetalthepenquin and ao3 @rodinia!

rodinia’s offerings:

type of fanwork: fanfic highest rating: mature length of work: up to 10k characters and/or relationships on offer: any/not listed especially interested in: fluff, soulmates, arranged marriage/royalty AU, high school/college AU, future!fic/kid!fic unwilling to address: smut additional notes: n/a

minimum bid: $5

auctions run from NOV 4 to NOV 10, 23:59 eastern time. bids before or after this date are invalid and will not be counted. if you would like to bid on this auction, please:

- check the bidding spreadsheet to find out what the current high bid is. - fill out the contributor’s bidding form with a bid that is higher than the current high bid. you may bid as high as you like as long as it is a number that is divisible by five (such as $15, $30, $50, and so on). you will not be notified if you are outbid, so please check the spreadsheet frequently. - when auctions end, winners will be notified by the email provided.

questions? email us at [email protected]!

[karategirl80]

An Archive of Our Own, a project of the Organization for Transformative Works

READ MORE SASTIEL!!!!!!!  @rodiniaorzetalthepenquin

[chello-chellos]

Meet my original character Rodinia!

[aroguexenolith]

The Amazonian Craton: Rodinia’s prodigal son

I saw this out of context and it made me laugh