Cryogenian

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Dreaming of a White Christmas?Some people love having snow at Christmas while others see it purely a

Link #christmas #white christmas #glacier #snowball earth #sturtian #marinoan #cryogenian #geology #geologic #science #nature #the earth story

Snowball Earth (The Huronian Glaciation)Could you believe, that 2400-2100 Mya ago, the Earth was ent

Link #snowball earth #science #cryogenian #geology #planet #enceladus #the earth story #climate change #greenhouse #atmosphere

Feel the RhythmThese centimeter scale sedimentary layers in Virginia are really quite neat. They’re

Link #varve #sediment #sedimentary #geolgoy #appalachian #mountains #virginia #nature #landscape #original photographers #research #cryogenian #the earth story #rhythmite #rhythm

The Elatina diamictiteThis rock comes from the Elatina formation and is found in Flinders Ranges Nat

Link #geology #diamictite #elatina #australia #snowblal earth #cryogenian #sedimentary #the earth story

Early Oxygen jumpFree oxygen first appeared in Earth’s atmosphere at least 2.5 billion years ago aft

Link #geology #science #oxygen #atmosphere #neoproterozoic #halite #mineralmonday #mineral #cryogenian #glaciation #snowball earth #australia #photosynthesis #the earth story

Mineral Fork formationThese rocks are found exposed in a number of mountain ranges in Utah. See the

Link #geology #diamictite #snowball earth #glacier #glacial #science #cryogenian #the earth story #mineral fork #formation

Folded turbiditesThis image from the Landsat 7 spacecraft shows the ephemeral Ugab River as it flows

Link #nature #landscape #geology #namibia #science #schist #ugab river #river #turbidites #cryogenian #snowball earth #earth from space #landsat #satellite #the earth story

The ultimate living fossil?Yet again a museum drawer full of unclassified samples gave out a big sur

Link #fossil #ediacaran #dredge #australia #cryogenian #cambrian #geology #nature #the earth story #science

The Kwagunt formation and the CryogenianThe next unit up in the Grand Canyon is (I think) seen here;

Link #kwagunt formation #grand canyon #grand canyon stratigraphy #chuar group #grand canyon supergroup #science #geology #stratigraphy #shale #sea level #snowball earth #precambrian #cryogenian #the earth story