enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Columbia River Basalt Group - Wikipedia

    en.wikipedia.org/wiki/Columbia_River_Basalt_Group

    The Columbia River Basalt Group (including the Steen and Picture Gorge basalts) extends over portions of four states. The Columbia River Basalt Group (CRBG) is the youngest, smallest and one of the best-preserved continental flood basalt provinces on Earth, covering over 210,000 km 2 (81,000 sq mi) mainly eastern Oregon and Washington, western Idaho, and part of northern Nevada. [1]

  3. Stone tool - Wikipedia

    en.wikipedia.org/wiki/Stone_tool

    Complex stone tools were used by the Gunditjmara of western Victoria [27] until relatively recently. [28] Many examples are now held in museums. [27] [26] Flaked stone tools were made by extracting a sharp fragment of stone from a larger piece, called a core, by hitting it with a "hammerstone". Both the flakes and the hammerstones could be used ...

  4. Ringold Formation - Wikipedia

    en.wikipedia.org/wiki/Ringold_Formation

    The Ringold Formation represents sand and gravel placed by the Columbia River between 9 and 3 million years ago. These deposits overlay cooled lava erupted as part of the Columbia River Basalt Group, a type of volcanic eruption known as flood basalts erupting from fissures across eastern Washington and Oregon that were unrelated to the Cascade Range. [11]

  5. Lithic technology - Wikipedia

    en.wikipedia.org/wiki/Lithic_technology

    The earliest stone tools to date have been found at the site of Lomekwi 3 (LOM3) in Kenya and they have been dated to around 3.3 million years ago. [1] The archaeological record of lithic technology is divided into three major time periods: the Paleolithic (Old Stone Age), Mesolithic (Middle Stone Age), and Neolithic (New Stone Age).

  6. Ground stone - Wikipedia

    en.wikipedia.org/wiki/Ground_stone

    The adoption of ground stone technology is associated closely with the Neolithic, also called the New Stone Age. The Stone Age comes from the three-age system developed by Christian Jürgensen Thomsen. In the Levant ground stones appear in Mesolithic 2 . In prehistoric Japan, ground stone tools appear during the Japanese Paleolithic, possibly ...

  7. Chopper (archaeology) - Wikipedia

    en.wikipedia.org/wiki/Chopper_(archaeology)

    To create this tool, one would have to use a hammerstone to chip away flakes on the stone to create a side of the stone with a very sharp edge, allowing for the cutting and hacking of an object. This is a unique type of lithic reduction, as only a single side of the stone is retouched to produce the cutting surface of the stone. The side that ...

  8. Stone Age discovery fuels mystery of who made early tools

    www.aol.com/news/stone-age-discovery-fuels...

    Archaeologists in Kenya have dug up some of the oldest stone tools ever found, but who used them is a mystery. In the past, scientists assumed that our direct ancestors were the only toolmakers ...

  9. Celt (tool) - Wikipedia

    en.wikipedia.org/wiki/Celt_(tool)

    In archaeology, a celt / ˈ s ɛ l t / is a long, thin, prehistoric, stone or bronze tool similar to an adze, hoe, or axe. A shoe-last celt was a polished stone tool used during the early European Neolithic for felling trees and woodworking.