fossils and carbon dating

There are the Cardenas Basalts of the Grand Canyon Supergroup at the bottom of Grand Canyon and the Uinkaret plateau lava flows which are much higher up.Rb/Sr radioisotope measurements were made of these rocks. The Uinkaret lava flows were measure and computed to be ~1.3 Billion years old while the lower Cardenas Basalts were measure and computed to be ~1.0 Billion years old.Anomaly?

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Originally posted by Mr. Davies:
What those promoting radiocarbon dating is correct must remember is where the creature is from.

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As there's a great Chick track that points out a fish that shows up at 5000 years old. What is happening is that sea dwelling creatures, especially deep sea fis.....
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From what I hear animals that fed on some of these sea ceatures also exhibit an older "false" age when carbon 14 dated.

Tell me why I should believe your creation bashing sites?