Ice Ages

[RickG]

There are at least five major Continental Glaciations (Ice Ages) known to have occurred throughout Earth's history.

These are:

1. The Huronian, 2.4 to 2.1 Ga (early Proterozoic)

2. The Cryogenian, a probable Snowball Earth event, 850 to 630 Ma (late Proterozoic)
3. The Andean-Saharan 460 to 420 Ma (late Ordovician and Surlian)

4. The Karoo 360 to 260 Ma (Carboniferous and early Permian)

5. Pliocene-Quaternary 2.58 Ma to present.

Pretaining the Pliocene-Quaternary, yes, we are still technically in an ice age. What we are experienceing presently is an interglacia period. Glacial periods are those of ice advance while interglaical are periods of ice retreat.

Discussion?

 

[freezerman2000]

.

 

[eclipsenow]

The Snowball earth event is fascinating. Am I to understand that only volcanoes peeking through all that ice saved life on earth? They raised CO2 to something like 20%, and that thawed the planet, but the storms were horrific and the acid rain melted continents. (There's another thing for YEC'ers to disprove, those flows of acid-dissolved rock).

 

[lasthero]

At the risk of getting off topic, I've always been curious how creationists explain the ice ages. I know they often say the flood caused one, but I haven't heard any explanation of the mechanics, or why it appears that there have been several when there was only one.

 

[Loudmouth]

There are at least five major Continental Glaciations (Ice Ages) known to have occurred throughout Earth's history.

These are:

1. The Huronian, 2.4 to 2.1 Ga (early Proterozoic)

2. The Cryogenian, a probable Snowball Earth event, 850 to 630 Ma (late Proterozoic)
3. The Andean-Saharan 460 to 420 Ma (late Ordovician and Surlian)

4. The Karoo 360 to 260 Ma (Carboniferous and early Permian)

5. Pliocene-Quaternary 2.58 Ma to present.

Pretaining the Pliocene-Quaternary, yes, we are still technically in an ice age. What we are experienceing presently is an interglacia period. Glacial periods are those of ice advance while interglaical are periods of ice retreat.

Discussion?

Milankovitch cycles appear to drive the periodicity of modern glacials and interglacials, but what are the mechanisms that drive long term ice ages? What types of events are scientists proposing?

 

[freezerman2000]

Milankovitch cycles appear to drive the periodicity of modern glacials and interglacials, but what are the mechanisms that drive long term ice ages? What types of events are scientists proposing?

I found this about the causes of a snowball earth... http://www.snowballearth.org/cause.html

 

[RickG]

Milankovitch cycles appear to drive the periodicity of modern glacials and interglacials, but what are the mechanisms that drive long term ice ages? What types of events are scientists proposing?

Plate tectonics would have been a major influence. Looking at past continental positions, continental glaciation only occurs when there is a continental mass in a polar region covering the area significantly. And of course, ocean currents would have an influence as well.

 

[Shemjaza]

At the risk of getting off topic, I've always been curious how creationists explain the ice ages. I know they often say the flood caused one, but I haven't heard any explanation of the mechanics, or why it appears that there have been several when there was only one.

It's easy:
"Were you there? How can you prove millions of years. There was only one ice age, right after the flood."

 

[RickG]

At the risk of getting off topic, I've always been curious how creationists explain the ice ages. I know they often say the flood caused one, but I haven't heard any explanation of the mechanics, or why it appears that there have been several when there was only one.

Paleoclimatology evidence shows that the current interglacial begin some 12,000 years ago with current global climate becoming similar to today's climate around 8 to 10 thousand years ago. To come up with an ice age some 4500 years ago entails ignoring all the physical paleoclimatology evidence we have showing that there was no continental glaciation advance then and an incredible imagination.

 

[RickG]

I found this about the causes of a snowball earth... http://www.snowballearth.org/cause.html

That's an excellent cite for information on the snowball earth. I suggest looking at some of the other links on that cite, especially the "overview" and "questions" portions.

 

[[serious]]

It's easy:
"Were you there? How can you prove millions of years. There was only one ice age, right after the flood."

I also wasn't in New York, but the Royals still won the world series.

 

[RickG]

It's easy:
"Were you there? How can you prove millions of years. There was only one ice age, right after the flood."

We weren't there, but the physical evidence left for us to evaluate was there.

 

[Shemjaza]

I also wasn't in New York, but the Royals still won the world series.

We weren't there, but the physical evidence left for us to evaluate was there.

Just to make sure people don't misunderstand me. I was just trying to point out how easy it is to ignore evidence from geology when you've already tossed out biology, astronomy, anthropology and history.

(Science accepting atheist here).

 

[[serious]]

Just to make sure people don't misunderstand me. I was just trying to point out how easy it is to ignore evidence from geology when you've already tossed out biology, astronomy, anthropology and history.

(Science accepting atheist here).

Ah, got poed

 

[AV1611VET]

It's easy:
"Were you there? How can you prove millions of years. There was only one ice age, right after the flood."

This.

 

[Loudmouth]

Plate tectonics would have been a major influence. Looking at past continental positions, continental glaciation only occurs when there is a continental mass in a polar region covering the area significantly. And of course, ocean currents would have an influence as well.

It would also seem probable that thermohaline circulation would play a role, as it currently does. Interesting. Thanks.

 

[RickG]

It would also seem probable that thermohaline circulation would play a role, as it currently does. Interesting. Thanks.

I'm not sure if any models have been constructed in paleooceans for that purpose but that would be a major factor in my opinion. When I was doing research from my masters thesis (1975) which was about the causation and occurrence of continental glaciation, a prominent observation was that no polar ice caps, or continental glaciation for that matter, existed unless there was a continental mass over or surrounding one of the poles.

 

[joshua 1 9]

At the risk of getting off topic, I've always been curious how creationists explain the ice ages. I know they often say the flood caused one, but I haven't heard any explanation of the mechanics, or why it appears that there have been several when there was only one.

Creationism begins with Pangaea when the dinosaurs started to devour each other. This is said to the the work of Satan trying to get God Creation to destroy itself. So we really don't have much to say about the first three ice ages or what land masses we had before Pangaea was formed.

 

[Loudmouth]

Creationism begins with Pangaea when the dinosaurs started to devour each other.

Why didn't it start in the Cambrian when the eukaryotes started to devour each other?

 

[joshua 1 9]

Why didn't it start in the Cambrian when the eukaryotes started to devour each other?

Do Eukaryotes eat their babies? I thought that was just recycling where you break down an old organism to recycle the elements to make a new organism. Even today we have bacteria in our digestive system to break the food down so the body can absorb it. Just like the mitochondrial in the cell extracts the energy for the body.

John Wesley actually deals with this in terms of the resurrection. Some food goes for energy and some food is for substance and no two organisms can share the same elements that goes toward their substance. If they did then you have a problem at the resurrection where the two individuals can not share the same elements in their resurrected bodies.

"But some man will say, How are the dead raised up? And with what body do they come?" How can these things be? How is it possible that these bodies should be raised again, and joined to their several souls, which many thousands of years ago were either buried in the earth, or swallowed up in the sea, or devoured by fire? -- which have mouldered into the finest dust, --that dust scattered over the face of the earth, dispersed as far as the heavens are wide; -- nay, which has undergone ten thousand changes, has fattened the earth, become the food of other creatures, and these again the food of other men? How is it possible that all these little parts, which made up the body of Abraham, should be again ranged together, and, unmixed with the dust of other bodies, be all placed in the same order and posture that they were before, so as to make up the very self-same body which his soul at his death forsook? - See more at: http://www.umcmission.org/Find-Reso...Resurrection-of-the-Dead#sthash.cFNlQgzB.dpuf"