Dating quartz veins

Carrying the cores required carrying extra rock, but moving may have minimized conflicts with others coming to the quarry to obtain raw stone.Work stations where cores were converted into useful tools are often found near water sources.possible travel route of hunting band 5,000 years ago in Archaic Period, based on types of rock used for tools and found at Peaks of Otter in 2008 Source: base map from US Fish and Wildlife Service Wetlands Mapper The earliest stone quarries used by Paleo-Indians in Virginia have been found at Flint Run in Warren County and the Williamson site in Dinwiddie County.At those sites, Native Americans pried chunks of cryptocrystalline quartz away from the less-useful limestone in the area.Those ancient hunters probably traveled further west to the James River near modern-day Buchanan.There they may have traded with one or more bands of hunters who had quarried the jasper outcrops (site 44RB323) in the Arnold Valley near Natural Bridge.Some groups used jasper, others used quartzite or metarhyolite, but all had a specific mineral structure which created sharp edges when fractured.Modern glass Coca-Cola bottles have a similar structure, and in the 1600's Native Americans manufactured points from glass obtained from colonists.

For example, most tools found at a Peaks of Otter site when Abbott Lake was drained in 2008 were made from quartz and argillite found in the Piedmont to the east, not jasper from the Ridge and Valley province to the west.Those chunks of rock could be carried away and refined by additional chipping into knives, blades, and various forms of "points." The cores were portable, but nowhere close to a finished product.Cores were processed further at sites located away from quarries.That pattern suggests that, perhaps 5,000 years ago, a band of Native Americans living in the Roanoke River watershed near modern Bedford or Altavista followed the Big Otter River upstream on a hunting expedition.They kept moving uphill, using Stoney Creek as a guide as well as a supply of drinking water, then established a temporary camp near the crest of the Blue Ridge next to a wetland that is now dammed and drowned to form Abbott Lake.

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