Investigations at the Barnes Site (40DV307)

2019 ◽  
pp. 91-110
Author(s):  
Thaddeus G. Bissett ◽  
Stephen B. Carmody ◽  
D. Shane Miller
Keyword(s):  
Large Scale ◽  
River Channel ◽  
Middle Woodland ◽  
Ohio Valley ◽  
Site Location ◽  
Late Archaic ◽  
Early Woodland ◽  
Particle Size Data ◽  
Size Data

At the Barnes Site (40DV307) along the Cumberland River, two discrete shell-bearing deposits dating to the Late Archaic and Middle Woodland periods (approximately 3500 and 1800 cal BP respectively) are separated by a thick Early Woodland–period shell-free stratum dated between 2900 and 2000 cal BP. Alternating shell-bearing and shell-free deposits at sites elsewhere in the southern Ohio Valley have often been viewed as indicative of long-term changes in subsistence practices and traditions or large-scale environmental fluctuations affecting resource abundance. At Barnes, however, chronological, geoarchaeology, and paleoethnobotany data from shell-bearing strata recovered in 2010 and 2012 suggest that the two shell-bearing deposits mark the locations of shellfish processing at or near the river’s edge when the river channel was physically closer to the current site location. Particle-size data indicate that when the shell-free deposit accumulated, the site was situated in a low-energy depositional zone, suggesting that the river channel had shifted further to the west during that period of time.

The Evolution and Persistence of Ceramic Motifs in Northern Georgia

1950 ◽  
Vol 16 (1) ◽  
pp. 16-22 ◽  
Author(s):  
Robert Wauchope
Keyword(s):  
Woodland Period ◽  
Previous Article ◽  
Cultural Continuity ◽  
Middle Woodland ◽  
Late Archaic ◽  
American Antiquity ◽  
Early Woodland ◽  
Middle Woodland Period ◽  
Frequency Peak

Stamped or impressed designs on pottery from a group of relatively early sites in northern Georgia provide new data on the origin of several well known motifs of later times, and add to the evidence for a considerable cultural continuity between the archaeological phases of this area.In a previous article for american antiquity (Vol. XIV, pp. 201-9), I summarized the general ceramic sequence in the Etowah Drainage. Fabric impressed pottery seems to be the first majority ware in this area. It gradually decreased in popularity as Mossy Oak Simple Stamped increased and Deptford Bold and Linear Check Stamped appeared. The last named, together with Deptford Simple Stamped, became majority types during Late Archaic or Early Woodland times. In the meantime Woodstock Stamped and Woodstock Incised pottery appeared, but did not reach their frequency peak until Early Swift Creek had presumably degenerated into its later form near the end of the Middle Woodland period. Napier Stamped appeared at this time. Napier and Woodstock pottery strongly influenced the Early Mississippi "Etowah" wares, both stamped and incised. In the latter part of this period, Savannah Stamped intruded briefly, but the Etowah types persisted and finally deteriorated in carefulness of execution, thus evolving into the Lamar pottery of Late Mississippi time.

Planform deviations in river channel alignment due to active landsliding in the High Himalaya of Bhutan

2020 ◽  
Author(s):  
Larissa de Palézieux ◽  
Kerry Leith ◽  
Simon Loew
Keyword(s):  
Large Scale ◽  
Rock Slope ◽  
River System ◽  
River Channel ◽  
Point Sources ◽  
River Channels ◽  
Stream Network ◽  
Cross Sectional ◽  
Slope Instabilities

<p>Large rock slope instabilities affect river channels both due to catastrophic failures and long-term creep. The relationship between rock slop instabilities and processes in the adjacent river system are typically assessed in terms of channel profile perturbations and cross-sectional morphology, e.g. excess topography. However, such relationships can also be evident in planform changes of the channel alignment, e.g. in landslide dams and long-term channel migration. Large scale creeping rock slope instabilities can be considered point sources which introduce sediment laterally to a river channel. In cases in which sediment production from one side of the channel exceeds that of the opposing side, the course of the river can be shifted towards the less active hillslope. The deviation of the channel from its original course may therefore be used as a proxy for relative sediment input of the two opposing hillslopes.</p><p>In order to characterize the planform morphology of the river channels, we treat them as signals fluctuating around a smoothed channel and use a fast Fourier transform to extract characteristic wavelengths and amplitudes of the stream network. We observe a consistent increase in amplitude of planform deviation with increasing wavelength with a variability of two orders of magnitude at the shortest wavelength (10<sup>1</sup> m) and less than one order of magnitude at longer wavelengths (10<sup>3</sup> m).</p><p>When comparing characteristic channel morphologies based on these analyses to the deviation of channels adjacent to mapped landslides, the amplitude of the deviation appears higher than those naturally occurring in the river system at wavelengths similar to twice the landslide width.</p>

Grain size of activated carbon, and untreated and modified granular clinoptilolite under freeze-thaw: applications to permeable reactive barriers

Polar Record ◽  
2006 ◽  
Vol 42 (2) ◽  
pp. 121-126 ◽  
Author(s):  
Damian B. Gore ◽  
Erika S. Heiden ◽  
Ian Snape ◽  
Geraldine Nash ◽  
Geoffrey W. Stevens
Keyword(s):  
Activated Carbon ◽  
Granular Materials ◽  
Permeable Reactive Barriers ◽  
Sem Images ◽  
Freeze Thaw ◽  
Particle Size Data ◽  
Reactive Barriers ◽  
Moisture Conditions ◽  
Size Data

Permeable reactive barriers are used to adsorb contaminants from soil water. Their fillings are granular materials whose stability under freezing conditions has not been demonstrated. In this research, three granular materials (activated carbon, raw clinoptilolite and a nutrient amended clinoptilolite) were subjected to freeze-thaw cycles at different moisture conditions, in order to simulate their use in permeable reactive barriers in areas of freezing ground. The <250 μm fraction, which will potentially accumulate grain fragments, showed no change for the carbon, but an increase from ∼1% to ∼3% abundance by volume for the clinoptilolite with modes at 100–200 μm. SEM images show cracks in the zeolite grains, forming fragments of the size observed in the particle size data. These findings may have implications for the long-term permeabilities of reactive barriers operated in areas of freezing ground.

The millennia-long use history of triangular bifaces

2020 ◽  
Vol 41 (4) ◽  
pp. 168-207
Author(s):  
R Michael Stewart
Keyword(s):  
New York ◽  
Future Research ◽  
Middle Woodland ◽  
Late Archaic ◽  
Delaware Valley ◽  
Radiocarbon Dates ◽  
Projectile Points ◽  
Early Woodland ◽  
Middle Archaic ◽  
History Of

Relatively small, triangular bifaces often considered to be projectile points have a demonstrable use history that includes the Middle Archaic, Late Archaic, Early Woodland, late Middle Woodland, Late Woodland, and Contact periods of regional archaeology. Radiocarbon dates and other data are used to document this extensive history using the Upper Delaware Valley of New Jersey, Pennsylvania, and New York as a case study. Observed trends are evaluated in a broader regional context. The degree to which triangles of different ages can be distinguished from one another is addressed and suggestions for future research are made.

Evolution of Large-Scale Coronal Structures

1994 ◽  
Vol 144 ◽  
pp. 29-33
Author(s):  
P. Ambrož
Keyword(s):  
Magnetic Field ◽  
Field Line ◽  
Large Scale ◽  
Coronal Magnetic Field ◽  
Source Surface ◽  
Solar Cycles ◽  
Characteristic Relationship ◽  
The Magnetic Field ◽  
Coronal Structures

AbstractThe large-scale coronal structures observed during the sporadically visible solar eclipses were compared with the numerically extrapolated field-line structures of coronal magnetic field. A characteristic relationship between the observed structures of coronal plasma and the magnetic field line configurations was determined. The long-term evolution of large scale coronal structures inferred from photospheric magnetic observations in the course of 11- and 22-year solar cycles is described.Some known parameters, such as the source surface radius, or coronal rotation rate are discussed and actually interpreted. A relation between the large-scale photospheric magnetic field evolution and the coronal structure rearrangement is demonstrated.

Computer Analyses in Preventive Health Research

1967 ◽  
Vol 06 (01) ◽  
pp. 8-14 ◽  
Author(s):  
M. F. Collen
Keyword(s):  
Medical Research ◽  
Preventive Medicine ◽  
Health Research ◽  
Large Scale ◽  
Preventive Health ◽  
New Era ◽  
Large Numbers ◽  
Normal Test ◽  
Computer Analyses

The utilization of an automated multitest laboratory as a data acquisition center and of a computer for trie data processing and analysis permits large scale preventive medical research previously not feasible. Normal test values are easily generated for the particular population studied. Long-term epidemiological research on large numbers of persons becomes practical. It is our belief that the advent of automation and computers has introduced a new era of preventive medicine.

(A review) Atlas of especially protected natural areas of Saint Petersburg / Ed. in chief V. N. Khramtsov, T. V. Kovaleva, N. Yu. Natsvaladze. St. Petersburg, 2013. 176 p.

2014 ◽  
pp. 124-129
Author(s):  
Z. V. Karamysheva
Keyword(s):  
Protected Areas ◽  
Large Scale ◽  
Natural Areas ◽  
Natural Protected Areas ◽  
Saint Petersburg ◽  
Natural Processes ◽  
Original Illustrations ◽  
Vegetation Maps ◽  
Protected Natural Areas

The review contains detailed description of the «Atlas of especially protected natural areas of Saint Petersburg» published in 2013. This publication presents the results of long-term studies of 12 natural protected areas made by a large research team in the years from 2002 to 2013 (see References). The Atlas contains a large number of the historical maps, new satellite images, the original illustrations, detailed texts on the nature of protected areas, summary tables of rare species of vascular plants, fungi and vertebrates recorded in these areas. Special attention is paid to the principles of thematic large-scale mapping. The landscape maps, the vegetation maps as well as the maps of natural processes in landscapes are included. Reviewed Atlas deserves the highest praise.

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