"A billion years missing from geologic record: Where it" Topic
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Tango01  | 06 Jun 2020 9:16 p.m. PST |
…may have gone "The geologic record is exactly that: a record. The strata of rock tell scientists about past environments, much like pages in an encyclopedia. Except this reference book has more pages missing than it has remaining. So geologists are tasked not only with understanding what is there, but also with figuring out what's not, and where it went. One omission in particular has puzzled scientists for well over a century. First noticed by John Wesley Powell in 1869 in the layers of the Grand Canyon, the Great Unconformity, as it's known, accounts for more than one billion years of missing rock in certain places…"
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| jdpintex | 06 Jun 2020 9:22 p.m. PST |
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| Roderick Robertson | 07 Jun 2020 8:07 a.m. PST |
Alien time-and-space bending. It'll suddenly "pop back" in 2034. |
| mjkerner | 07 Jun 2020 11:56 a.m. PST |
I checked my garage and attic. Nothing. Nada. Zip. Zilch. |
| Tango01 | 08 Jun 2020 2:04 p.m. PST |
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