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To find out more about obsidian and its importance to people who once occupied national park land, search for “obsidian” on the National Park Service home page.
When an archeologist has identified the source of the obsidian from which an artifact is made, he or she may be able to date the artifact using the obsidian hydration technique.
This technique of dating obsidian artifacts measures the microscopic amount of water absorbed on freshly broken surfaces.
Thus, we are moving closer to the grand center, and will pass into Treta Yuga around the year 4099 A.
D. [....]" - Woolly rhino / Tibet - "[....] The recently uncovered Tibetan woolly rhino, named Coelodonta thibetana, lived in the middle Pliocene around 3.7 million years ago, before the Ice Age, or Pleistocene, began about 2.8 million years ago. D., 05/21/15] - "A 3.3-million-year-old skeleton of a young child curled into a ball no bigger than a cantaloupe - described as 'a bright beam of light' on human evolution - was unveiled Wednesday [09/20/06 - even though it was discovered in 2000, six years ago! [NP = new paragraph] The bones may be the best fossil yet found of the primitive human ancestor Australopithecus afarensis.
For those researchers working in the field of human history, the chronology of events remains a major element of reflection.
Archaeologists have access to various techniques for dating archaeological sites or the objects found on those sites.
Obsidian hydration is not effective on surfaces that are uneven due to gradual weathering caused by natural forces.
The volcanic glass of Obsidian Cliff in Yellowstone National Park is a National Historic Landmark, and was an important source of raw material for the manufacture of stone tools by Native Americans.
[....] The discovery was published in Science, a scientific journal, on Friday [09/02/11]. That is the same species as the superstar fossil dubbed Lucy, an adult female discovered nearby in 1974.Tags: Adult Dating, affair dating, sex dating