Sedimentary dating

A: its Co Rn Y Q: What did the bartender say when oxygen, hydrogen, sulfur, sodium, and phosphorous walked into his bar? Q: How did the blonde define hydrophobic on her Earth Science exam? Anyhow, this reporter ran the article in a paper and started a local push for a government study before they realized what the story was about.

Q: According to a geologist, why is the world so diverse? Q: What do geologists call a benzene ring with iron atoms replacing the carbon atoms? Q: What's wrong with a joke involving Cobalt, Radon, and Ytterium? A: Carbon-Holmium-Cobalt-Lanthanum-Tellurium or CHo Co La Te Q: Why do Geologists go to Lollapalooza? The deaths that he was quoting were from drownings.

But it was not until the late 1950s that all the pieces were in place; by then the phenomenon of radioactivity was understood, most of the naturally occurring isotopes had been identified and their abundance determined, instrumentation of the necessary sensitivity had been developed, isotopic tracers were available in the required quantities and purity, and the half-lives of the long-lived radioactive isotopes were reasonably well known.

By the early 1960s, most of the major radiometric dating techniques now in use had been tested and their general limitations were known.

Comparing these rocks with the products of present erosion, sedimentation, and earth movements, these earliest geologists soon concluded that the time required to form and sculpt the present Earth was immeasurably longer than had previously been thought.

James Hutton, a physician-farmer and one of the founders of the science of geology, wrote in 1788, “The result, therefore, of our present inquiry is, that we find no vestige of a beginning, — no prospect of an end.” Although this may now sound like an overstatement, it nicely expresses the tremendous intellectual leap required when geologic time was finally and forever severed from the artificial limits imposed by the length of the human lifetime.

Q: What do you call a periodic table with gold missing? A: Barium Q: What weapon can you make from the elements potassium, nickel and iron? If I could rearrange the periodic table, I'd put Uranium and Iodine together.

Radiometric dating is based on the decay of long-lived radioactive isotopes that occur naturally in rocks and minerals.

By the mid- to late 1800s, geologists, physicists, and chemists were searching for ways to quantify the age of the Earth.

Lord Kelvin and Clarence King calculated the length of time required for the Earth to cool from a white-hot liquid state; they eventually settled on 24 million years.

"Geologists have their faults" "It's a hard rock life" Rock On "Geologists can be very sedimental" Geologists never lose their luster! "Perhaps so," replied Opal, "but at least I'm not just organic ooze with bugs - I'm pristine, white, and smooth." "That's tuff," said Amber, secreting with rage.

"May the Quartz be with you" Geologists probe crevaces Kiss a geologist and feel the earthquake. "Is that so," Amber snorted, stating flatly that Opal had no cleavage.

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