Skip to content

Today's Creation Moment

Jul
24
How Old Is Human DNA?
Genesis 11:8
"So the Lord scattered them abroad from thence upon the face of all the earth: and they left off to build the city."
Mitochondria generate energy inside each of your cells. They have their own DNA, which is passed directly from mother to child. This fact and the known rate at which mitochondrial DNA mutates has led...
RSS
share

How Fast Do Stalactites Grow?

Genesis 7:11a
"In the six hundredth year of Noah's life, in the second month, the seventeenth day of the month, on that day all the fountains of the great deep were broken up…"

For generations cave guides have been telling cave visitors that the stalagmites and stalactites that they see around them grow at incredibly low rates. The figure that is usually given is one inch per century for stalactites (they are the ones that hang down). That estimate, however, was not based on any scientific research. Even in the 1970s, the growth of these formations was not fully understood.

Now a group of scientists who believe in young Earth creationism has studied the chemistry of stalagmite and stalactite formation in actual cave conditions. They discovered that there are many variables in the growth of these formations. How much carbon dioxide dissolves in the water depends on temperature and pressure. The amount of carbon dioxide in the water can vary by a factor of five. The dissolved carbon dioxide turns the water acidic, causing it to dissolve calcium carbonate, that is, limestone. More turbulent water can dissolve more calcium carbonate. The same water under pressure can dissolve even more. Once the water seeps out of the cave ceiling, the pressure is relieved, the water evaporates, and the calcium carbonate begins to deposit to form the stalactite. Actual growth rates in actual caves have been observed as high as one inch every seven and a half days!

The violence and high pressures developed during the Genesis Flood would have provided the ideal conditions for producing a great deal of underground water supersaturated with calcium carbonate.

Prayer: 
Dear Father, prosper true and right knowledge among us. Amen.
Notes: 
CRSQ, 3/00, pp. 208-214, "What is the Upward Limit for the Rate of Speleothem Formation?"