Geologists Look for Answers in Antarctica: Did Ice Exist at Equator Some 300 Million Years Ago?

ScienceDaily ^ | Feb. 24, 2010 | Gerilyn Soreghan, OU professor of geology.

[Ernest_at_the_Beach]

The proof is there....see this thread:

Snowball Earth: New Evidence Hints at Global Glaciation 716.5 Million Years Ago

In this photo from Canada's Yukon Territory, an iron-rich layer of 716.5-million-year-old glacial deposits (maroon in color) is seen atop an older carbonate reef (gray in color) that formed in the tropics. (Credit: Francis A. Macdonald/Harvard University)

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This work was supported by the Polar Continental Shelf Project and the National Science Foundation's Geobiology and Environmental Geochemistry Program.

[Arthur McGowan]

Well, the Second Coming is bound to happen before that. I.e., it seems disproportionate that from the time of Abraham to Christ would be 3000 years, and from the First Coming to the Second Coming would be millions.

[SunkenCiv]

similar topics:

• 'Snowball Earth': Glaciers, ice packs once met at Equator
• Ice Once Covered the Equator
• Cold And Ice, Not Heat, Episodically Gripped Tropical Regions 300 Million Years Ago

sidebars:

• New Study Says Global Warming May Be Signal of Impending Ice Age
• The big picture: 65 million years of temperature swings
• Were short warm periods typical for transitions between interglacial and glacial epochs?
• Lessons From an Interglacial Past
• How Well Do Scientists Understand How Changes in Earth's Orbit Affect Natural Climate Trends?

Thanks Ernest_at_the_Beach.

· join · view topics · view or post blog · bookmark · post new topic · subscribe ·

[cake_crumb]

The poles were in a different place 300 million years ago, the theory is that Earth hadn’t yet been hit by the astral body that knocked it slantwise on its axis and started that wobble.

[Fred Nerks]

Striped Icebergs & Frozen Waves images:

http://www.youtube.com/watch?v=OooXSHfzWR8

[cake_crumb]

Though it sounds like BS, that’s supposed to be ice flash frozen to the bottom of a berg that flipped over. A lack of bubbles gives it the intense blue color.

[Ernest_at_the_Beach]

Icebergs off New Zealand

[PIF]

Despite the apearence, these are normal. No frozen waves — sorry. I think a search for glacial blue ice will turn up these images. Did for me a while back.

[cake_crumb]

Antarctica or Greenland.

[Fred Nerks]

Yes, I know...it’s the endless argument between the catastrophists and the uniformitarians...anything that might have happened suddenly just scares the latter half to death...

[cake_crumb]

Heh...the dinosaurs could be considered proof of that...

[Marine_Uncle]

Interesting article/concepts. Perhaps the answers to the riddle shall eventually be well established.

[Clive]

Quaere:

Exactly where was the equator 300 million years ago?

[Avid Coug]

Ok dude. We are going to confiscate your picture of Helen. Hand it over!

[Ernest_at_the_Beach]

I don't know if the globe rotation has changed any except for the well documented wobble....so I guess it would be where it is now...

The Land masses have moved around according to theory.

[Ernest_at_the_Beach]

I think the breakup and movement of the earth surfaces would be the more accepted hypothesis....

We know about plate tectonics and their resulting earthquakes and volcanoes.

[Ernest_at_the_Beach]

Good article :

The Mid-Ocean Ridge

*************************************EXCERPT*****************************

It is the longest mountain chain, the most active volcanic area and until recently, the least accessible region on the earth. New maps reveal striking details of how segments of the Ridge form and evolve.

After cruising southeast 2,500 kilometers from the Scripps marine facility in San Diego, we intersected the crest of the East Pacific Rise, located at a depth of about 2.5 kilometers. The Rise marks the boundary between the Pacific and Cocos tectonic plates, each a slab of the earth's crust and upper mantle. The plates separate at a rate of about 120 millimeters per year (twice the rate at which a fingernail grows). As the plates move apart, cracks form along the crest of the rise, allowing molten rock to seep up from the mantle. Some of the molten rock overflows onto the ocean floor in tremendous eruptions. The magma then solidifies to form many square kilometers of new oceanic crust each year. Only a few kilometers above this activity, we felt like Lilliputians crawling along the spine of a slumbering giant that might awaken at any time.

[Fred Nerks]

Preserved Peaks | Discovery News Video .June 3, 2009 — Millions of years ago, rivers ran in Antarctica through craggy mountain valleys that were strangely similar to the modern European Alps, Chinese and British scientists reported on Wednesday.

In a study published by the British journal Nature, the scientists described a vast terrain that had been hidden beneath ice up to two miles thick for eons, until new imaging technology recently uncovered them.

“The landscape has probably been preserved beneath the ice sheet for around 14 million years,” the paper said.

The imaging revealed “classic Alpine topography” similar to Europe’s Alps, showing that rivers had once existed on Antarctica and had cut their way through the mountains. Later, these valleys were gouged and deepened by glaciers.

http://dsc.discovery.com/news/2009/06/03/mountains-antarctica.html

[Fred Nerks]

Monash University > News and Events > Monash Memo

Australia’s largest Antarctic fossil collection at Monash
12 October 2005

Australia’s largest collection of Antarctic fossils has taken up residence at Monash University.

The collection of more than 1000 fossils features invertebrates (including shells with their original mother-of-pearl still intact), leaves and partial tree trunks, remains of giant penguins, vertebrae and teeth of large marine reptiles such as Plesiosaurs, and a 65-centimetre-long skull cast of a meat-eating Therapod dinosaur.

http://www.monash.edu.au/news/monashmemo/stories/20051012/fossils.html

[Ernest_at_the_Beach]

Now this is getting wild....

Wasn't Antarctic always down there...?

and hasn't down there always been the coldest part of the Globe?

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The landscape has probably been preserved beneath the ice sheet for around 14 million years

Which means ,...if it hasn't moved ...that prior to 14 million years ago it wasn't frozen all the time....

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Wonder how they track where a piece of the crust is xxx years ago?