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It’s an Old World After All, Part 1

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November 5, 2012 Tags: Earth, Universe & Time

Today's video features Joy Walters. Please note the views expressed here are those of the author, not necessarily of The BioLogos Foundation. You can read more about what we believe here.

In our last Videocast, we explored some of the ways scientists have been able to determine the age of hominid fossils. Today, in our sixth BioLogos videocast, we extend the question to the age of the Earth. The first section, featured today, explains four methods scientists have used to determine that age: tree ring, lake varve, radiometric, and seafloor spread dating.

The script was written by biology student Joy Walters, with help from BioLogos president Darrel Falk.

Commentary written by the BioLogos editorial team.


Joy Walters is currently a student intern at BioLogos. She is completing her undergraduate education at Point Loma Nazarene University majoring in Biology-Chemistry. She is passionate about engaging the natural world and pursuing a deep relationship with her Creator and Savior. In the future, she desires to attend medical school and use her skills as a physician to establish God’s kingdom by bringing healing, joy and hope to others.

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Skl - #74161

November 5th 2012

To Joy Walters,

You mentioned volcanoes in the video. Last month I saw a news story where a correction was made to the estimated timing of the last eruption of some California volcanoes. The new dating is 2 to 3 thousand years ago. Prior to last month, the dating was 30,000 years ago. So, the old dates were in error by approximately 1,000% to 1,400%.

To arrive at the latest dating, they used what is called the (U-Th)/He zircon methodology.

Do you know what methodology was used which produced the dates which were older by approximately 1000% to 1400%?

http://www.scientificamerican.com/article.cfm?id=salton-sea-volcano-mystery

http://geology.gsapubs.org/content/early/2012/10/12/G33634.1.abstract

 

P.S.

Can you imagine how long a presidential pollster would stay in business if his estimates were off 1000+%? He says candidate X will win in a landslide with 60% of the vote, but candidate X ultimately loses with less than 6%! Gallup, giddyup outta here!


beaglelady - #74200

November 6th 2012

This is an excellent video, and since you mention ice cores, I want to point out that visitors are welcome at the National Ice Core Lab at Denver: http://nicl.usgs.gov/

There, I imagine that any creationist would be welcome to view an ice core and verify for himself that there are far more than 6000 annual layers in even a short sample of ice core.

I’d also to point out that the ice cores can be calibrated with known historical events, faithfully recording atmospheric changes in such events as the eruption of Mount Vesuvius and the Clean Air Act.  

Of course, a key assumption all this is that the earth is not a very clever, massive forgery—if that’s the case all bets are off!

 


lancelot10 - #75552

December 20th 2012

Beagle - read the creationists websites and you will be up to date.

The ice core myth was debunked a long time ago - the so called annual layers are merely snowfalls.    Then there was the WW2 fighter plane excavated from snow layers supposedly thousands of years ago.   Google up .

Even with many snowlayers (not years)historic events should be there such as the fighter plane.


Skl - #74243

November 8th 2012

As far as the belief that “ice cores can be calibrated with known historical events, faithfully recording atmospheric changes in such events as the eruption of Mount Vesuvius and the Clean Air Act”, some scientists are doubting the faith. Examples:

Ice cores and historical temperatures

http://www.astrobio.net/pressrelease/4851/ice-cores-may-not-be-accurate-thermometers

Ice corps and other historical matters

 http://robertkernodle.hubpages.com/hub/ICE-Core-CO2-Records-Ancient-Atmospheres-Or-Geophysical-Artifacts


beaglelady - #74257

November 9th 2012

I never mentioned temperature. Of course interpreting the ice cores can present difficulties, but there is no doubt they they are recording different atmospheric conditions.  You dodged the matter of the number of the annual layers.


Skl - #74292

November 10th 2012

The contention that each “annual” ice core layer invariably represents one year has been proven to be false. See, for example, the Lost World War II Squadron in Greenland.


beaglelady - #74512

November 19th 2012

What baloney!  Nobody every took ice cores and analyzed them at the site of the  Lost World War Squadron.   We’re talking about layers when we talk about ice cores; it’s not just about the thickness of the ice.


lancelot10 - #75554

December 20th 2012

Yes beagle but unfortunately    3 layers can come from several snowfalls in a day

and layers time and thickness relate to one another  - see below.


Orlandoroofing Contractor - #75441

December 18th 2012

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December 18th 2012

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lancelot10 - #75553

December 20th 2012

World War II Airplanes Under the Ice

The Greenland Society of Atlanta has recently attempted to excavate a 10-foot diameter shaft in the Greenland ice pack to remove two B-17 Flying Fortresses and six P-38 Lightning fighters trapped under an estimated 250 feet of ice for almost 50 years (Bloomberg, 1989). Aside from the fascination with salvaging several vintage aircraft for parts and movie rights, the fact that these aircraft were buried so deeply in such a short time focuses attention on the time scales used to estimate the chronologies of ice.

If the aircraft were buried under about 250 feet of ice and snow in about 50 years, this means the ice sheet has been accumulating at an average rate of five feet per year. The Greenland ice sheet averages almost 4000 feet thick. If we were to assume the ice sheet has been accumulating at this rate since its beginning, it would take less than 1000 years for it to form and the recent-creation model might seem to be vindicated.


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