Random chat horny girl - Dating recent lava flows
The radioactive decay of rubidium is slow, and would require 48.8 billion years for half the 87Rb of a rock to be converted to 87Sr. Noble, two geologists working with support from the U. Geological Survey, National Science Foundation, and National Aeronautics and Space Administration.
Evolutionary geologists have suggested that the isotope ratios of 87Rb to 87Sr in rocks can be used to determine "ages" in hundreds of millions, even billions of years. The fact that the data seem to describe a line on the plot of 87Sr/86Sr versus 87Rb/86Sr, is thought to testify to the validity of the method and the suitability of the specimens, and thus the basalt was given an "age" interpretation by the two geologists.
Four whole rock samples and one feldspar sample separated from one of the whole rock samples were submitted independently to three different laboratories for testing.
These data were obtained by the author, of the Institute for Creation Research, with private-donor support and the assistance of the three analytical laboratories. Damon, "K-Ar Age of Lava Dam in the Grand Canyon," Geological Society of America Bulletin, 79 (January 1968): 133-136.
Some of the lava flowed over the north rim, cascading into Grand Canyon, forming spectacular "frozen" lava falls.
Several lava flows even reached the river, forming lava dams.
Although no Indian legends attribute them to recent eruptions, one early geologist remarked about the extraordinary freshness of the lava: "It looks as fresh as any coulee of Vesuvius ejected twenty or thirty years ago." One K-Ar "model age" determination gave 1.2 0.2 million years for the lava dam, 3 and geologists consider these lava flows to be Pleistocene in age.
Rubidium-Strontium Data Rubidium, a trace element which is chemically similar to potassium, is naturally radioactive.
A simple calculation employed by these geologists indicates that 1.07 0.07 billion years would be required for the rock samples to acquire their various strontium isotope ratios by rubidium decayed.
That "age" of 1.07 billion years is the "rubidium-strontium isochron age" of the Cardenas Basalt, and is widely regarded by evolutionists as the best age obtained for Grand Canyon Rocks. Excessively Old “Ages” for Grand Canyon Lava Flows.
Everyone has heard about the great ages claimed by evolutionists for the earth's rocks. Television documentaries, textbooks, and museum displays tell us that the deepest rock layers within Grand Canyon are more than one billion years old.
The same evolutionary sources tell us that the most recent rocks of Grand Canyon are just thousands of years old.
For these reasons, these formations were selected for radioactive isosope dating by the rubidium-strontium isochron technique.Tags: Adult Dating, affair dating, sex dating