When geologist Elizabeth Miller started mapping a fault system in Death Valley, she questioned the origin of some sedimentary rocks previously assumed to be locally derived. Now, analysis has revealed where they really came from: central Nevada, indicating that part of today's Great Basin was the highest land in North America some 40 million to 20 million years ago.
https://phys.org/news/2021-11-sierra-nevada-shown-geologic-birthdays.html
The Moon is Waning Gibbous (90% of Full)
Sierra Nevada shown to have two geologic birthdays
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November 16, 2021 10:14AM |
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