Saturday, 5 March 2011

Early stone tools in California

A new study in the Journal Science reports that scores of stemmed projectile points and crescents found on California’s Channel Islands suggest that people who depended on a sea economy arrived in the Americas very early, possibly by a coastal route.
     The artifacts, likely made by inhabitants between 12,200 to 11,400 years ago, are associated with the remains of shellfish, seals, geese, cormorants, and fish.  The study team also found thousands of artifacts made from chert, a flint-like rock used to make projectile points and other stone tools.
     Some of the intact projectiles are so delicate that their only practical use would have been for hunting on the water, says Jon Erlandson, professor of anthropology at the University of Oregon. He has been conducting research on the islands for more than 30 years.
     “This is among the earliest evidence of seafaring and maritime adaptations in the Americas, and another extension of the diversity of Paleoindian economies,” Erlandson says. “The points we are finding are extraordinary, the workmanship amazing. They are ultra thin, serrated, and have incredible barbs on them. It’s a very sophisticated chipped-stone technology.”

Full story here:-
http://www.sciencemag.org/content/331/6021/1181.abstract?sid=13356725-4666-4643-bc9e-60ea0110ae24


3 comments:

  1. Eoliths Figure Stones and Portable Rock Art and Stone age Tools

    ReplyDelete
  2. Wow! this is Amazing! Do you know your hidden name meaning ? Click here to find your hidden name meaning

    ReplyDelete
  3. AGEN JUDI SLOT | SITUS JUDI SLOT | LIVE CASINO GAMES ONLINE

    vegasplay99 adalah sebuah situs judi online bola, slot dan casino terpercaya di Asia.
    Kami menyediakan tempat bermain terbaik bagi para pecinta judi online dalam melakukan taruhan.
    Semua permainan yang disediakan oleh Situs vegasplay99 ini merupakan permainan yang benar-benar aman dan juga bersih dari segala bentuk kecurangan,
    sehingga semua pemain tidak perlu ragu lagi untuk melakukan taruhannya.

    situs judi slot

    slot deposit pulsa

    judi deposit pulsa

    Deposit pulsa tanpa potongan

    ReplyDelete