Evidences of Pre-Pottery Cultures in Louisiana

1948 ◽  
Vol 13 (3) ◽  
pp. 227-232 ◽  
Author(s):  
C. H. Webb
Keyword(s):  
The State ◽  
Edwards Plateau ◽  
Coles Creek ◽  
Northern Portion ◽  
Central Texas ◽  
River Valleys ◽  
Southern Louisiana

Studies of Louisiana's prehistory have been devoted largely to the pottery-making and mound-building cultures. The topography of the state is primarily responsible for this fact, since the delta lands of southern Louisiana and the wide, fertile river valleys of the northern part were particularly suitable for the agricultural peoples whose numerous sites have attracted attention. Witness to this fact is the long sequence of pottery-containing cultures (Tchefuncte, Marksville, Troyville, Coles Creek, Plaquemine, historic Natchez) delineated by Ford, Willey, and Quimby in central and southern Louisiana, while the Red and Ouachita River valleys in the northern portion present another series of culture periods (Marksville, Coles Creek, Gahagan, Bossier, Belcher, Glendora) which culminate in the historic Caddo.Despite these facts, evidences of pre-pottery cultures are appearing in the state and these may be expected to increase as more careful investigations are pursued. This could be anticipated from the situation in surrounding states—the Edwards Plateau culture of central Texas, the Ozark Bluff Dweller culture of Arkansas and the several strata which underlie the pottery containing cultures in the Southeast, recently reviewed by Haag.

scholarly journals A LIST OF DIURNAL LEPIDOPTERA INHABITING THE STATE OF ILLINOIS

1880 ◽  
Vol 12 (3) ◽  
pp. 46-50
Author(s):  
C. E. Worthington
Keyword(s):  
The State ◽  
Personal Knowledge ◽  
Northern Portion

The following list is furnished in compliance with the request of the Editor of the Canadian Entomologist, published some time ago, some unsettled questions regarding species and distribution having delayed its preparation from time to time.The list is intended to be as complete as possible, and to include all described species known to have been taken within the State limits, or so nearly adjacent thereto as to certainly belong to the Illinois Fauna. In order to roughly designate the distribution within the State I have attached an to all species from the northern portion, of whose capture I have personal knowledge, and have further affixed a to such species as are not known to occur in the southern portion of the State.

Taxonomic Synopsis of the genus Chamaecrista (Leguminosae, Caesalpinioideae) in the Chapada dos Veadeiros region, Goiás, Brazil

Phytotaxa ◽  
2019 ◽  
Vol 427 (3) ◽  
pp. 131-185
Author(s):  
ALESSANDRO OLIVEIRA DE SOUZA ◽  
GWILYM PETER LEWIS ◽  
MARCOS JOSÉ DA SILVA
Keyword(s):  
National Park ◽  
Conservation Status ◽  
The State ◽  
Identification Key ◽  
Distribution Maps ◽  
Northern Portion ◽  
Herbarium Collections

Chamaecrista is one of the largest genera of Leguminosae subfamily Caesalpinioideae and comprises 330 species, of these, 222 species are present in the Phytogeographic Cerrado Domain in Brazil. The taxonomy of the genus in Brazil continues to need study. Here we present a taxonomic synopsis of Chamaecrista for the Chapada dos Veadeiros (CV) region, which is located in the northern portion of the state of Goiás, Brazil. Fieldwork was carried out in the area between 2010 and 2018; we also reviewed the literature and about 1500 herbarium collections to build the synopsis of species presented here. We record 65 species (71 taxa) of Chamaecrista occurring in the CV, corresponding to 60% of the species registered for the state of Goiás; 49 species at Chapada dos Veadeiros National Park (CVNP), 27 and 19 are endemic to the state of Goiás and the studied area respectively. An identification key and distribution maps, as well as comments on morphology and conservation status are presented, together with photograhs of the species in the field.

Experimental Burned Rock Studies on the Edwards Plateau: A View from Camp Bullis, Texas

2005 ◽  
Vol 26 (3) ◽  
pp. 289-329 ◽  
Author(s):  
Peter Pagoulatos
Keyword(s):  
Experimental Study ◽  
Color Change ◽  
Short Term ◽  
Edwards Plateau ◽  
Thermal Alteration ◽  
Central Texas ◽  
Quantitative Analyses ◽  
Earth Oven

This article presents an experimental study concerning the use of thermally altered stone, commonly referred to as fire-cracked, or burned rock. A series of controlled cooking experiments were initiated as limestone cobbles were placed within a prepared earth-oven and re-heated; this type of earth-oven is similar to those found within prehistoric burned rock mounds on the Edwards Plateau of central Texas. Twelve experiments were conducted in this study, as four different sets of cobble assemblages were each re-heated three times, at six, twelve, twenty-four, and forty-eight hour intervals. These heated limestone cobbles were then analyzed for thermal alteration characteristics such as color change, cracking, and spalling, for comparative purposes. Quantitative analyses were then applied to the data in order to establish whether different patterns of thermal alteration exist dependent upon short-term and long-term re-uses.

scholarly journals A PROLONGED SEASON OF OCCURRENCE FOR SCHISTOCERCA AMERICANA

1899 ◽  
Vol 31 (2) ◽  
pp. 28-28
Author(s):  
F. M. Webster
Keyword(s):  
Lake Erie ◽  
The State ◽  
Schistocerca Americana ◽  
The South ◽  
Northern Portion ◽  
South Shore

At Wooster, Ohio, this species was observed in the fieds on May 26, and at Alliance, nearly due east, on October 24, while at Bridgeport, in the extreme eastern central part of the State, it was found, active, on November 4, all during 1898. It appears to have been more numerous of late in the vicinity of the south shore of Lake Erie than elsewhere in the northern portion of the State, and more abundant than I have formerly observed it in the same latitude in Indiana and Illinois.

scholarly journals Interaction of Natural and Technical Systems in the Subsoil Development Areas

2019 ◽  
Author(s):  
В.И. Голик ◽  
Х.Х. Кожиев ◽  
О.Г. Бурдзиева ◽  
С.А. Масленников
Keyword(s):  
Strain Gauge ◽  
Underground Mining ◽  
Economic Effect ◽  
The State ◽  
Economic Effects ◽  
Raw Material ◽  
The North ◽  
Ore Body ◽  
Technology Improvement ◽  
River Valleys

Деятельность горнодобывающей отрасли осуществляется с высокой степенью риска. Проблема управления состоянием массива особо актуальна в условиях горного региона с неработающими выработками, воронками провалов и отвалами пород и хвостов обогащения на террасных участках и в долинах рек. Она особо актуальна в условиях региона Северная Осетия с неработающими выработками, воронками провалов и отвалами пород и хвостов обогащения на террасных участках и в долинах рек. Увеличение глубины горных работ и объемов выемки сырья в сейсмически активных районах усиливают статическое и динамическое воздействие на геомеханические системы. Одним из способов исследования динамики напряжений в массиве являются измерения с помощью тензометрических датчиков. На одном из месторождений была оборудована замерная тензометрическая станция. Полученные эпюры напряжений вокруг выработки служили основанием для оценки поведения массива. Установлено, что изменение состояния крепи в зависимости от фазы развития очистных работ подчиняется закономерности. Пока рудное тело в пределах блока ведет себя как защемленная в висячем и лежачем боках балка, напряжения распределяются равномерно. После отрезки рудного тела со стороны висячего бока нагрузка на верхний элемент крепи со стороны очистных работ возрастает. Одним из направлений совершенствования технологий является использование феномена заклинивания дискретных пород, что нередко позволяет обеспечить возможность отработки месторождений с получением экологоэкономического эффекта при обеспечении безопасности горных работ. Эффективность использования породных конструкций складывается из экономии труда и материалов на управление состоянием скальных массивов при подземных работах. Оптимизация влияния напряжений в зоне взаимодействия очистных и подготовительных выработок уменьшает разубоживание руд породами и снижает опасность травмирования работающих отлаивающимися породами. При подземной разработке скальных сложноструктурных металлических месторождений в зоне взаимодействия горных выработок величина и знак напряжений во времени и пространстве может быть прогнозирована с достаточной для оперативного управления детализацией. Учет геомеханических факторов при отработке таких участков позволяет корректировать параметры разработки с получением экономического эффекта от повышения качества добываемых руд и уменьшения опасности для работающих. Mining activities are carried out with a high degree of risk. The problem of managing the state of the massif is especially relevant in the conditions of a mountainous region with idle workings, funnel dips and dumps of rocks and tailings in terraced areas and in river valleys. It is especially relevant in the conditions of the North Ossetia region with idle workings, funnel dips and dumps of rocks and tailings in terraced areas and in river valleys. An increase in the depth of mining and volumes of raw material excavation in seismically active areas reinforce the static and dynamic effects on geomechanical systems. One of the methods for studying the dynamics of stresses in an array is measurements using strain gauge sensors. At one of the fields, a metering strain gauge station was equipped. The obtained stress diagrams around the working served as the basis for assessing the behavior of the array. It was established that the change in the state of the lining, depending on the phase of development of the treatment works, is subject to regularities. While the ore body within the block behaves like a beam pinched in the hanging and lying sides, the stresses are distributed evenly. After segments of the ore body from the side of the hanging side, the load on the upper support element from the side of the treatment works increases. One of the areas of technology improvement is the use of the phenomenon of jamming of discrete rocks, which often allows you to provide the opportunity to develop deposits with environmental and economic effects while ensuring the safety of mining. The efficiency of using rock structures consists of saving labor and materials on managing the state of rock masses during underground work. Optimization of the effect of stresses in the zone of interaction between treatment and preparatory workings reduces ore dilution by rocks and reduces the risk of injury to workers using exfoliated rocks. In underground mining of rocky complex structural metal deposits in the interaction zone of mine workings, the magnitude and sign of stresses in time and space can be predicted with sufficient detail for operational control. Consideration of geomechanical factors when mining such sites allows you to adjust the development parameters to obtain the economic effect of improving the quality of ore mined and reducing the risk to workers.

From Naguatex to the River Daycao: The Route of the Hernando de Soto Expedition through Texas

1994 ◽  
Vol 14 (3) ◽  
pp. 199-225 ◽  
Author(s):  
James E. Bruseth ◽  
Nancy A. Kenmotsu
Keyword(s):  
Native American ◽  
The State ◽  
Late Prehistoric ◽  
East Central ◽  
The Past ◽  
South Central ◽  
Guadalupe River ◽  
Central Texas ◽  
Hernando De Soto ◽  
Late Prehistoric Period

Over the past several decades, many attempts have been made to trace the route of the Hernando de Soto expedition through Texas. All of these efforts have been based on an incomplete understanding of the archeological record relating to the 16th century in Texas. A number of archeological investigations have been conducted over the past several decades, and provide better knowledge of the late prehistoric period in Texas. This article examines the route of the de Soto expedition, under the command of Luis de Moscoso, through the state based on our present archeological knowledge. The expedition is proposed to have entered Texas along the Red River and traveled southward until reaching Caddoan settlements near Nacogdoches in the east-central portion of the state. From here the expedition traveled westward until reaching the Guadalupe River of south-central Texas, where the soldiers abandoned hopes of reaching New Spain by an overland route. Implications of the proposed route upon Native American populations of eastern Texas are discussed and related to the possible introduction of European diseases.

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