Originally posted by Smilin
Nick,
The catastrophic models don't explain the cave formation timelines either. Can you account for that? or did you forget what I brought up earlier?
Originally posted by Smilin
Scroll Back Nick
Before going to the memorial, O'Bannon, Dr. Coleman, and Judge Ralph Gilbert met with Culbertson. Although Culbertson accompanied them to the memorial, he, for some unexplained reason, soon returned to his office. The others were allowed to proceed with the field study. They scrutinized the water stains on the interior walls of the rotunda and toured the basement rooms where stalactites, some as much as four feet in length, were found.
A photograph taken in February, 1968, shows a curtain of stalactites growing from the foundation ceiling beneath the Lincoln Memorial in Washington DC. Some of the stalactites had grown to five feet long (a metre and a half) in the 45 years since the memorial was built in 1923.3
Originally posted by Pete Harcoff
Since npetreley has Morat on "ignore", I'll repaste the link so he won't miss it
http://www.talkorigins.org/faqs/hovind/howgood.html#proof22
Edit: npetreley, Morat wants you to know that building and caves aren't the same thing. Not even close.
Originally posted by npetreley
The queston was if it was possible for a stalactite to form quickly. And the answer is clearly yes. We know these formed quickly because they weren't there when people built the basements.
In contrast, we don't know what the previous conditions were that caused many cave stalactites to form, so we don't have any way to know how old they are. Just because we can measure how slowly they are continuing to form NOW doesn't tell you anything about what the conditions were when they were first formed.
In October 1953, National Geographic published a photo of a bat that had fallen on a stalagmite in the famous Carlsbad Caverns, New Mexico, and had been cemented on to it. The stalagmite had grown so fast it was able to preserve the bat before the creature had time to decompose.
At Australia's Jenolan Caves in New South Wales, a lemonade bottle was placed below a continually active stalactite in the 'Temple of Baal' in 1954. In the following 33 years a coating of calcite about three millimetres thick has formed on the bottle. The same amount of deposit has formed since development in 1932 of the Ribbon Cave in the jenolan system. At this time pathways were cut through areas of flowstone. Water flowing down the sides of these cuttings over the past 55 years has built up the current deposit.
Caves are formed when rainwater, acidified by carbon dioxide in the soil, seeped downward through millions of tiny cracks and crevices in the limestone layers. This weak carbonic acid (the same acid as in soda pop) dissolved a network of tiny microcaverns along cracks. If the bedrock is lifted, the erosion will create deeper channels. Just as rivulets converged into streams above ground, water flow paths through the limestone also converged into incrementally larger flow paths.
As rainwater continued to enter the system and more limestone was dissolved, the microcaverns enlarged. Because the major drains carried the most water, they enlarged the most. Caves were forming. If the water table continues dropping new underground drains formed at levels lower than the older ones, and the older channels empty. Thus the oldest cave passages are the closest to the surface, and the youngest horizontal passages are the deepest underground.
Originally posted by TheBear
Quick question. Does rapid formation account for all stalactite and stalagmite structures?
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