How are half life and radiocarbon dating used by scientists

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The earliest evidence of humans burying their dead with flowers, 13,700 years ago, was discovered in the same location at Mount Carmel last summer.

The Anasazi culture is believed to have gradually evolved out of a nonagricultural base of the ancient Desert culture, once widespread in western North America, though precise evidence of the transition has yet to be discovered. 50 These early Anasazi camped in the open or lived in caves seasonally. Most of the traditional Anasazi villages in the Four Corners Area are abandoned by 1300. However, the resilient and resourceful Pueblo still live and maintain their thousands-of-years-old culture.

have been in part derived from the Mogollon culture, an older tradition of settled agriculturalists and ceramics producers who flourished from c.100 b.c. 1400 in the mountain areas of east central Arizona and west central New Mexico. Hunters used stone-tipped spears and knives, atlatl and dart or spear, and hunted deer, bighorn sheep and antelope. During this period they increasingly relied on cultivated gardens of corn and squash, but no beans. had begun by this time to cultivate squash and a type of maize.

There is much evidence of trade and cultural interchange between the Mogollon and the Anasazi.6500 - 1200 B. The pre-Anasazi culture that moved into the Southwest after the big game hunters departed are called Archaic. They moved regularly and gathered wild plants in season.(early) 1200 B. They lived in simple shelters of perishable materials or in shallow caves or rock shelters.

500 - 750 Deep pithouses were developed, along with some above- ground rooms, surface storage pits and cists. Plain gray and some black-on-white pottery is made. Pottery includes corrugated gray, elaborate black-on-white, red and orange. 1350 - 1600 Typically, large pueblos are oriented on a central plaza. The number of Pueblos shrinks from the more than 100 observed in 1539 to 20.

1150 - 1350 Large pueblos, cliff dwellings and towers are the rule. Red, orange and yellow pottery on the rise as black-on-white declines. D 1600 - present During the first part of this era the Spanish military, church and civil domination and rule of the pueblos drives the Pueblo religion underground.

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