What process is radiometric dating based on
"Theoretical date marking the beginning of another Maha Yuga, or Great Age [traditionally a cycle of 4,320,000 years] and the beginning of the world's most recent Satya Yuga [Also: Krta Yuga, Krita Yuga], or Golden Age [traditionally a cycle of 1,728,000 years]." [- E.
M.]"The Babylonian historian Berossus [3rd century B.
Most of the Cenozoic is the Tertiary, from 65 million years ago to 1.8 million years ago.
The Quaternary includes only the last 1.8 million years.*Trivia: "The Pleistocene has been dated from 2.588 million (5,000) to 12,000 years before present (BP), with the end date expressed in radiocarbon years as 10,000 carbon-14 years BP. It covers most of the latest period of repeated glaciation, up to and including the Younger Dryas cold spell.
With water plentiful, scientists think it was a place where primitive life could have thrived by feeding on rocks and minerals similar to tiny organisms on Earth that hide in caves and underwater vents. P.] Around 3.5 billion years ago, Mars underwent a shift and raged with volcanic activity. [NP] The bones appear to have been cut and smashed some 3.4 million years ago, the first evidence of stone tool use by Australopithecus Afarensis, the species best known for the dubbed 'Lucy,' says researcher Zeresenay Alemseged. .'] chip away at beliefs on human ancestors ['The Kenyan site was discovered one day in July 2011 ... The brain case, the lower jaw with most of its teeth, both collar bones, many vertebrae and ribs, the fingers, both kneecaps and the delicate bone that holds open the throat, called the hyoid, are all present. The fossil is understood to be 500,000 years older than anything previously discovered south of Tanzania.
NASA's older rovers Spirit and Opportunity found geologic evidence that water flowed during this time, but it was highly acidic and considered too caustic for life. P.] Scientists thought much of the planet had been awash in acidic water until Curiosity earlier this year found signs of an old streambed near its landing site with a neutral p H. [....] The oldest confirmed stone tools are less than 2.6 million years old, perhaps from only a little before the emergence of the genus Homo." [Based on: News Services article (Find rewrites history of tool use), p. [....] The fossil-hunting team happened upon the skeleton in 2000 in a region plagued by extreme heat, flash floods, malaria, wild beasts and occasional shootouts between rival ethnic groups. Researchers estimate the child may have been 3 years old. It is said to show that our ancestors had greater genetic diversity than previously believed and were spread far wider across Africa.
His discovery led to an intense focus on Africa as the probable site of human origins and early development, as Charles Darwin had earlier predicted. - "[....] And indeed the earliest-known stone tools, found in Gona, Ethiopia, suggest that 2.5 million years ago meat was a central part of hominines' diet.The end of the Younger Dryas has been dated to about 9640 BC (11,590 calendar years BP).[....]"*Trivia: "It is perfectly safe to say that at the commencement of the Pleistocene Period there was no land with an elevation of over 100 feet, if as much, on the face of the earth.15]In the 1930's and 40's, the first specimens of robust autralopithicines were discovered in east and southern Africa.These discoveries and the ones that have followed have considerably complicated our view of the hominid family tree.