摘要:

AbstractGeoarchaeological investigations of the alluvial piedmont or bajada emanating from the Tortolita Mountains, Arizona, show that the distribution of Hohokam sites apparent from the surface is complete and undisturbed by geological processes. Late Holocene geomorphic processes and their resultant deposits on the bajada affected the location of prehistoric Hohokam agricultural settlements. Hohokam settlements were commonly situated on small alluvial fans dominated by sheetwash processes and deposition of fine‐grained alluvium, where floodwater farming could be easily pursued with little modification of the natural surface. Large alluvial fans, dominated by channel processes and coarse‐grained alluvium were avoided by the Hohokam farmer because these areas were less suitable for floodwater farm

ISSN:0883-6353    

DOI:10.1002/gea.3340010401

出版商:John Wiley&Sons, Inc.    

年代:1986

数据来源: WILEY

摘要:

AbstractArchaeological sites containing significant information not available from terrestrial sites occur along former land surfaces now submerged and buried on the continental shelf. Although sites may occur anywhere along these former land surfaces, factors essential to man's survival, such as fresh water and food resources, make site locations somewhat predictable. Landforms such as rivers, lakes, and bays represent locations where one or more of the basic subsistence factors are provided. These relict landforms on the continental shelf can be detected easily using high‐resolution seismic profilers. Physical sampling of landforms targeted as potential site areas is usually the only method for confirming the presence of an archaeological site. Sediment samples from a potential site are subjected to a series of sedimentary analyses which discriminate between archaeological deposits and natural sedimentary deposits. These methods for locating inundated and buried archaeological sites on the continental shelf were tested in a Gulf of Mexico study funded by the United States Department of the Interior, Minerals Management Service. The study suggests that at least two locations sampled along the ancient Sabine River Valley represent archaeological deposits dating from the Late Wisconsinan period of lower sea stan

ISSN:0883-6353    

DOI:10.1002/gea.3340010402

出版商:John Wiley&Sons, Inc.    

年代:1986

数据来源: WILEY

摘要:

AbstractArchaeologists frequently ascribe “destruction” layers uncovered during excavation to the effects of earthquake‐induced phenomena. Undoubtedly, ancient societies that lived in active seismic zones were as plagued by seismic destruction as we are today. However, other geological phenomena can account for many observed features. This paper reviews the geologic and archaeological background for assessing the evidence for prehistoric earthquake destru

ISSN:0883-6353    

DOI:10.1002/gea.3340010403

出版商:John Wiley&Sons, Inc.    

年代:1986

数据来源: WILEY

摘要:

AbstractThe study of Quarternary insect fossils has shown their value as paleoenvironmental indicators, especially during times of rapid climatic change, and this method is now being introduced into North America archeological studies. Abundant insect fossils have been recovered from 13,000 year old detrital organic materials from silty clays at the Lamb Spring site, south of Denver, Colorado. The spring deposits also contain bones of extinct camel and mammoth, thought to have been modified by human hunters.The late Pleistocene insect fauna from Lamb Spring comprises 71 identified taxa from 6 orders and 14 families, principally beetles, providing substantial paleoenvironmental data. The beetle fauna is a mixture of grassland and mountain elements, and they appear to represent an environment similar to that found today in high mountain valleys, such as South Park, Colorado. Based on this fauna, mean summer temperatures at 13,140 B.P. were probably 10°C cooler than present

ISSN:0883-6353    

DOI:10.1002/gea.3340010404

出版商:John Wiley&Sons, Inc.    

年代:1986

数据来源: WILEY

ISSN:0883-6353    

DOI:10.1002/gea.3340010405

出版商:John Wiley&Sons, Inc.    

年代:1986

数据来源: WILEY

ISSN:0883-6353    

DOI:10.1002/gea.3340010406

出版商:John Wiley&Sons, Inc.    

年代:1986

数据来源: WILEY

ISSN:0883-6353    

DOI:10.1002/gea.3340010407

出版商:John Wiley&Sons, Inc.    

年代:1986

数据来源: WILEY

ISSN:0883-6353    

DOI:10.1002/gea.3340010408

出版商:John Wiley&Sons, Inc.    

年代:1986

数据来源: WILEY

ISSN:0883-6353    

DOI:10.1002/gea.3340010409

出版商:John Wiley&Sons, Inc.    

年代:1986

数据来源: WILEY

ISSN:0883-6353    

DOI:10.1002/gea.3340010411

出版商:John Wiley&Sons, Inc.    

年代:1986

数据来源: WILEY