"Geologists Find Remnants of Early Earth’s Crust in Canada" Topic
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| Tango01 | 17 Mar 2017 12:22 p.m. PST |
"Recreating the nature of Earth's first crust is difficult because geologic activity has created turnover that drove most of it back into Earth's interior. While some slivers of 4-billion-year-old crust remain in the rock record, only isolated zircon mineral grains are dated to be older. "Finding remnants of early Earth's crust has proven difficult, but a new approach offers the ability to detect the presence of truly ancient crust that has been reworked into ‘merely' really old rocks," said study co-author Dr. Richard W. Carlson, Director of the Department of Terrestrial Magnetism at the Carnegie Institution for Science. The novel approach examines variations in the abundance of an isotope of the element neodymium, which is created by the radioactive decay of a different element, samarium…"
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 Editor in Chief Bill  | 17 Mar 2017 4:03 p.m. PST |
Canada? Figures…  |
| zoneofcontrol | 17 Mar 2017 5:03 p.m. PST |
Was there any peanut butter on it? |
| Waco Joe | 17 Mar 2017 6:05 p.m. PST |
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| Tango01 | 18 Mar 2017 11:19 a.m. PST |
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