Lateglacial, early and middle holocene environments, human occupation, and resource use in the Atacama (Northern Chile)
Lateglacial, early and middle holocene environments, human occupation, and resource use in the Atacama (Northern Chile)
复制标题
阿塔卡马（智利北部）的晚冰期、早、中全新世环境、人类占领和资源利用
DOI：
10.1002/gea.3340090402
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发表时间：
1994
影响因子：
1.7
通讯作者：
A. Núñez
中科院分区：
文献类型：
--
作者：
M. Grosjean;A. Núñez
Paleoenvironmental data from the Atacama Altiplano (21°–24°S) indicate that water, vegetation and animal resources were more abundant during lateglacial and early Holocene times than today. The rate of precipitation increased above 4000 m elevation to 400–500 mm/yr compared to the present 200 mm/yr. Dry conditions prevailed below 3500 m. Evidence of Paleoindian habitation is still missing, even though there is no evidence for environmental prohibitors during lateglacial time. The early Archaic hunters (10,820 yr B.P.-ca. 8500 yr B.P.) inhabited the Altiplano (high Puna) and its western slope, where water was available due to higher river runoff from the Altiplano, and the resources in different elevation zones were accessible. Natural resources decreased significantly during the middle Archaic period (8500-ca. 5000 yr B.P.). Lakes receded to today's levels, pedogenesis in the Altiplano terminated, and human activities were restricted to the most stable sites in the Rio Lao and the Rio Purifica catchments north of 23°S. The less stable oases south of 23°S (Salar de Atacama and Punta Negra) were abandoned. The climatic changes are best explained by shifts of the (sub)tropical circulation. © 1994 John Wiley & Sons, Inc.
