Christine Siddoway

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The ice that now covers West Antarctica was not there 3.6 million years ago, after a massive collapse of the ice sheet during a warming period. Anna Ruth Halberstadt

West Antarctica’s history of rapid melting foretells sudden shifts in continent’s ‘catastrophic’ geology

Christine Siddoway, Colorado College; Anna Ruth (Ruthie) Halberstadt, The University of Texas at Austin, and Keiji Horikawa, University of Toyama

A picture of what West Antarctica looked like when its ice sheet melted in the past can offer insight into the continent’s future as the climate warms.
As rochas podem conter pistas da história que remontam a centenas de milhões de anos, como o caso das rochas conhecidas como Tava nas montanhas rochosas, cujas estruturas foram formadas por água pressionada sobre o arenito enfraquecido pelas enormes geleiras que cobriram a Terra Bola de Neve. Christine S. Siddoway

Evidências de uma “Terra Bola de Neve” encontradas em rochas antigas do Colorado, EUA

Liam Courtney-Davies, University of Colorado Boulder; Christine Siddoway, Colorado College, and Rebecca Flowers, University of Colorado Boulder

Geólogos encontraram evidências da Terra Bola de Neve na forma como os enigmáticos arenitos chamados Tava se formaram nas Montanhas Rochosas há centenas de milhões de anos.
Rocks can hold clues to history dating back hundreds of millions of years. Christine S. Siddoway

Evidence from Snowball Earth found in ancient rocks on Colorado’s Pikes Peak – it’s a missing link

Liam Courtney-Davies, University of Colorado Boulder; Christine Siddoway, Colorado College, and Rebecca Flowers, University of Colorado Boulder

Geologists found evidence in the way enigmatic sandstones called Tava formed in the Rocky Mountains hundreds of millions of years ago.

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