A Possible Paleo-Indian and Archaic Site in the Swan Valley,Manitoba

Abstract

An archaeological site uncovered in the Swan Valley of Manitoba during road construction yie1ded a small group of artifacts including a Paleo-Indian projectile point and side-notched Archaic points. The site is significant as it lies in a corridor which probably served as a vital migration route between the Northern Plains and the diminishing lakes within the Lake Agassiz Basin.     

A Progress Report on a Pre-Ceramic Site at Rattlesnake Draw Eastern New Mexico

Abstract

The Rattlesnake Draw site has produced both Paleo-Indian and Archaic artifacts in a concentrated area centering about a presently dry lake basin. In addition to the artifacts discovered, the investigators have found evidence of the construction of artificial wells during the archaic period. These wells are similar to those earlier discovered at Blackwater Draw, Locality One.     

DhLB-1: Early Period Occupation Near Glacial Lake Agassiz,Southeast Manitoba

Abstract

Dhlb-1 is a Paleo-Indian site situated just north of the International Boundary in southeastern Manitoba. It was excavated in 1972, and found to be an area of tool manufacturing. It was dated by association with a gravel lens, deposited shortly after the formation of the Campbell strandline, 9,500 to 10,000 years B.P. The site is of significance because it demonstrates early period migration into southeastern Manitoba immediately after Lake Agassiz withdrawal.     

The Pelland and Moe Site Blades: Paleo-Indian Culture History in the Upper Midwest

Abstract

Analysis of artifacts recovered from the Moe site located in northwestern North Dakota reveals the presence of 15 blades and three blade-like flakes, the majority of which are made of Knife River Flint and have been modified by retouch flaking. A comparison of the Moe specimens to those from the Pelland site in northern Minnesota, the only other site from the study area which contains blades of Paleo-Indian age, indicates that the Moe specimens are smaller in all dimensions. The Pelland specimens are made of Knife River Flint and have been modified by retouch flaking. Examination of the literature on Paleo-Indian sites from the Plains region indicates that blade production is more common in Plano cultures particularly Agate Basin and Plainview-Goshen than in earlier Clovis or Folsom cultures or later Cody cultures. It is suggested that the Pelland and Moe site blades are Plano in age and most likely Agate Basin or Plainview-Goshen in cultural affiliation. A model provided by Leo Pettipas (1976) is used to suggest an eastward movement of Plains Plano cultures using Knife River Flint across southern Manitoba, eastern North Dakota, and into western and northern Minnesota following the recession of Glacial Lake Agassiz.     

A Paleo-Indian Point From Henry County,Missouri

Abstract

A Paleo-Indian point, probably assignable to the Plano Tradition, was recently collected in Henry County, Missouri. Although unfluted, it otherwise compares favorably both morphologically and technologically with several published samples of PaleoIndian points. The upland location also compares . favorably with known Paleo-Indian site locations; however, geomorphic processes may have biased recording of Paleo-Indian sites.     

Late Paleo-Indian Activity At The Lubbock Lake Site

Abstract

Excavations at Lubbock Lake (41 LU1), Southern High Plains of Texas, revealed the presence of a complex, late Paleo-Indian feature containing a camping area and bison (Bison antiquus) kill/butchering locale. The feature is found within a cienega or marsh deposit and dates from 8300 to 8600 years. At least two camping episodes are indicated, separated by the kill/butchering event. Camp debris consists of a projectile point midsection, unifacial and bifacial tools, and flakes. Faunal debris includes remains of butchered pronghorn antelope, rabbits, ducks, grouse, and turtles. The kill/butchering locale contains remains of four bison and three fetuses, a bone expediency tool, a reworked projectile point base, unifacial butchering tools, and flakes. Projectile points, other lithic tools, and age of the feature indicate a Firstview occupation. From faunal and geologic data, site environs are reconstructed as a marshlands rimmed by a narrow border of wet meadows grading into a mixed grass prairie. Although several late Paleo-Indian kill/butchering locales are known on the Southern High Plains, this feature is the first late Paleo-Indian camp.     

Micro-Analysis of Wear-Patterns on Projectile Points and Knives from the Jurgens Site,Kersey, Colorado

Abstract

Based on a sample of 76 artifacts of the Paleo-Indian Tradition from the Jurgens Site, Kersey, Colorado, the problem of functional diversity within a single morphological category of Plano (Jennings 1955) projectile points and/or knives is considered in terms of formal and functional analysis. Intensive mascroscopic and microscopic analysis of the artifacts is the basis for investigation. It is concluded that microscopic analysis of wear-patterns provides the means for more realistic evaluation of artifact function, which in turn enhances our understanding of morphological and functional changes through time. Analysis also revealed that within this collection the functional parameters can be defined in terms of breakage series and tool length. It is concluded that the results of this study have important implications for the interpretation of Paleo-Indian lithic technology.     

Comments On the Preceramic in Missouri*

Abstract

In the Plains periphery of the Central Area, Missouri, extensive preceramic remains are found. Well recognized complexe s with Paleo-Indian connections are Nebo Hill, Sedalia, Graham Cave Levels 6-4, andArnoldResearch Cave. Radiocarbon dates range from 7738 B. C. to 4322 B. C. Other preceramic complexes described from excavations include the Hatten Mound component and the Lincoln County burial site, in the Northwest Prairie; Blackwell Component A in the Ozark Highland; and the Jakie L2 and L3 components dated at 5112 B. C. to 4422 B. C. in the Southwest Drainage. Surface collections from all areas indicate preceramic occupations.     

The Stricker Site

Abstract

The Stricker site is a multi-component habitation area in Big Bend Reservoir, South Dakota. Component A, the latest and most I imited occupation, represents the Dakota from the middle of the 19th century to the present. Component B represents the major occupation by people following the Coalescent Tradition in the form of the Extended Coalescent variant. Component C, a minor occupation, is representative of the Initial variant of the Middle Missouri Tradition. Most of the features and artifacts pertain to Component B. The analysis provides evidence for a transition from the Shannon phase into the Felicia phase     

Pryor Stemmed: A Specialized Late Paleo-Indian Ecological Adaptation

Abstract

One of the late Paleo-Indian cultural groups in the Bighorn-Pryor Mountains area of southern Montana and northern Wyoming is characterized by a lanceolate projectile point with a distinctive alternate beveling on blade edges. Present evidence indicates a settlement pattern restricted to the mountains and foothills and an intense hunting and gathering subsistence strategy. They appear also to have been separate from contemporary cultural groups on the open high plains. A number of site investigations and radiocarbon dates indicate that this cultural group of around 8000 years ago and referred to as Pryor Stemmed was probably about the last of the late Paleo-Indian cultural complexes in the area.     

The Simonsen Site: Report For the Summer Of 1959

Abstract

Isolated surface finds of probable Archaic and Paleo-Indian sites have been made in western Iowa for the past decade. Recently 3 sites have been found in this area, along tributaries of the Missouri River, containing cultural material buried in sediments 13-17 feet below the modern surface. One of these sites, the Simonsen, exposed on a loop of the Little Sioux River, is described.

Bison bones were eroding below the top of an alluvial terrace. This profile is divided into 8 stratigraphic zones, Zones 1 and 2, were 9 feet thick and composed of sterile loam, sand and gravels. Zone 3, contained several disintegrated bison bones, fine ash, burned earth, a fire pit with charred log fragments and a hearth containing a large canid but no artifacts. Zone 4, 1-2 feet thick was composed of sterile interbedded gravels and sand. Zone 5, from a few inches to 2 feet thick contained small flecks of charcoal, and a fragment of a projectile point. Zone 6 was a very stilty sand interbedded with sand silts. Zone 7, 2-3 feet thick was the most profilic source of cultural material but considering the large area exposed, produced few artifacts. These were knives, flakes, 2 anvil stones and 3 points. Zone 8, a gravelly deposit of unknown thickness, underlay the cultural deposits.

A total of 7 bison skulls or partial skulls were collected in addition to abundant remains of other parts of the skeletons. These remains were tentatively assigned to the extinct specie, Bison occidentalis. Measurements of the metapoidals of these specimens agreed in massiveness with those from Scottsbluff and were smaller than specimen from the Brewster and Lipscomb sites which contained bison antiquus and Folsom artifacts.

The 1959 collection from the Simonsen site supports earlier observations of affiliations with the Logan Creek Site of Nebraska and argues for assignment within the late Paleo-Indian to early Archaic horizon.     

Hell Gap: Paleo-Indian Occupation on the High Plains

Abstract

A resume of archaeological investigations in the Hell Gap Valley of southeastern Wyoming is presented. This research produced a detailed sequence of Plains PaleoIndian occupation of this section of the High Plains. from about 9000 to 5500 B.C. Identifiable complexes recognized include Goshen, Midland, Folsom, Agate Basin, Hell Gap, Alberta, Cody, and Frederick. Materials recovered represent camping activities rather than the better known game kills, and add dimension to our knowledge of Plains Paleo-Indian cultures.     

Fossil Bison and Artifacts from The Mona Lisa Site,Calgary, Alberta

Abstract

In November, 1968, salvage excavations at the site of an art gallery under construction in urban southwest Calgary, Alberta, Canada, revealed a Paleo-Indian bison kill. The single kill level lay at a depth of more than 250 em. in flood plain deposits of the Bow River, now flowing more than a mile north of the site. The bone bed was overlain by a thick deposit of Mazama Ash (6600 years B.P.). A bone radiocarbon date of 8080 ± 150 years B.P. (G.S.C.-1209) was obtained. Intermittent pedigenesis and fineness of enclosing sediments indicate an overbank flood plain situation for the kill; evidently the site area was repeatedly flooded, probably seasonally, before and after the kill episode. No evidence of a jump-off is present, although this is inconclusive at present. In the 30 square meters excavated at Locality A there was evidence for three activity loci relating to processing of carcasses. The lithic sample includes only crude butchering tools, precluding cultural assignment. Several bone tools, most of them fashioned from tibiae, appear to have been used as expedient and expendable butchering tools at the kill. Some modification of the butchering of lower limbs is noted, apparently to facilitate the production of the bone tools.     

Burned Rock Midden Sites on the Southwestern Edge of the Edwards Plateau,Texas

Abstract

Data from two groups of burned rock midden sites are presented. Occupation of the sites seems to have been heaviest during Archaic times, with some Late Prehistoric and possible Paleo-Indian components also recognized. A burial is described from one site. Problems pertaining to burned rock midden sites are briefly discussed.     

Early Occupations in Bighorn Canyon,Montana

Abstract

Excavation of the Mangus Site (24CB22l) in Bighorn Canyon, Montana revealed a stratum containing artifacts of the Agate Basin Complex. This occupation was dated by radiocarbon at 6740 B. C. and 6650 B. C. The Sorenson Site (24CB202) contained two early cultural levels, one of unknown cultural affiliation datedat 5850 B. C. and 5610 B. C. overlying a second unidentified occupation. Future investigations in Bighorn Canyon may produce artifacts allowing identification of these two occupations.     

智能期相联合SSF技术改善冠状动脉CTA图像运动伪影

目的:评价智能期相选择(Smart phase)和自动追踪冻结(Snap-Shot-Freeze, SSF)技术联合应用在前门控冠状动脉CT血管成像(Coronary CT angiography, CCTA)改善图像运动伪影中的价值。方法:94例疑似心血管疾病的患者行CCTA检查。所有患者图像均采用smart phase、SSF及smart phase+SSF两种技术联合进行后处理。将原始图像(A组)、smart phase图像(B组)、SSF图像(C组)和smart phase+SSF图像(D组)导入GE AW4.6工作站。对四组患者冠状动脉三大分支(右冠状动脉、左前降支及左旋支)图像质量进行主观评价(5分法)和测量每组图像主动脉根部及前胸壁肌肉CT值和标准差,并计算图像的噪声(Noise,N)、信噪比(Signal-to-noise ratio,SNR)和对比噪声比(Contrast-to-noise ratio,CNR)和比较。结果:经smart phase处理后,A组冠状动脉三大分支图像评分均得到了明显提高(P<0.05)。经SSF矫正的A组和B组冠状动脉三大分支图像质量评分均得到明显提高(P<0.05)。Smart Phase联合SSF技术得到的图像评分在所有组中评分最高,与其他组均存在显著差异(P<0.05)。结论:Smart phase联合SSF技术可明显改善前门控CCTA图像运动伪影,值得临床推广应用。     

A Survey Of Paleo-Indian Sites Along the Middle Rio Grande Drainage

Abstract

Sandia Cave is so important to the Paleo-Indian picture that it dominates the “classic” hunting site complex in the middle Rio Grande. As a result there is a tendency to minimize the considerable variety of other “classic” hunting points that have been found in the region, expecially in the Estancia Valley where such pluvial lakes as Lake Estancia and the Galisteo Basin once existed.

In addition 3 sites in the Rio Grande valley exhibit a different cultural horizon associated with the period of extinct fauna. This complex is characterized by lack of projectile points, a dearth of milling stones, and the dominance of crude scrapers, and choppers.     

A Plainview Kill/Butchering Locale On The Llano Est Acado-The Lubbock Lake Site

Abstract

The Lubbock Lake site is a multi-component, stratified locality on the Llano Estacada (Southern High Plains). Part of a Plainview (Paleo-Indian) period bison kill/butchering locale is being excavated. Cultural designation is based on recovered projectile points, stratigraphic position, and radiocarbon dates. Tool assemblage consists of lithic and bone expediency tool kits. Geological, faunal, and paleoenvironmental settings create an interpretative framework for the cultural event. Only part of the Plainview lifeway system is reflected at the site. The locale represents a different level of social organization than seen at other Plainview period bison kill sites. Preliminary statements include a few differences and similarities between excavated Plainview sites.     

A Clay Figurine Cache From The Lower Pecos Region,Texas

Abstract

A cache of four clay figurines from a large rockshelter in the Lower Pecos region in Val Verde County, Texas, is described. A tentative date range of 2000 to 1200 B.C., which is within the Middle Archaic period of the local chronology, is proposed for the cache on the basis of artifact associations.     

On The Significance of Additional Radiocarbon Dates from Bonfire Shelter,Texas

Abstract

Two hitherto unreported dates from charcoal samples associated with remains attributed to a Paleo-Indian bison kill at this site are provided. These dates further substantiate a minimal antiquity of ca. 10,000 years for the deposit and, by inference, give evidence of the use of a “bison jump” technique of hunting at this early time period. Definitional problems, differing views on the antiquity, basic comparability of cited examples, and temporal continuity of this mode of mass killing are briefly discussed. Some suggestions are made as to the cultural implications made probable by acceptance of an early date for this practice.