Water levels continue to fall in Lake Mead due to worsening drought in the western United States and overuse of the Colorado River. In recent months, several shocking discoveries, such as human remains and sunken ships, have been uncovered as the water levels plummeted to historically low levels. Recently, scientists made a discovery that dates back to events that took place millions of years ago.
The falling water levels exposed sedimentary rocks that hadn’t been seen in nearly a century when the Hoover Dam was built and Lake Mead was filled. According to researchers from the University of Nevada, Las Vegas (UNLV), these sedimentary rocks are laced with volcanic ash that rained down on southern Nevada during volcanic eruptions roughly 12 million years ago.
