Glacial Map of North America. Part 1. Map: Western half and Eastern Half. Part 2. Bibliography and Explanatory Notes.Richard Foster Flint

1946 ◽  
Vol 21 (4) ◽  
pp. 375-375
Keyword(s):  
North America ◽  
Western Half ◽  
Eastern Half

scholarly journals Eurasian and North American phylogeny of Turolian hipparionine horses (Perissodactyla, Mammalia) in China

1992 ◽  
Vol 6 ◽  
pp. 305-305
Author(s):  
Mahito Watabe
Keyword(s):  
North America ◽  
North American ◽  
Northern China ◽  
Sensu Stricto ◽  
The Other ◽  
Dental Morphology ◽  
Facial Morphology ◽  
Open Land ◽  
Specialized Form ◽  
Eastern Half

The late Miocene Chinese hipparions are morphologically diversified showing similarity to both western Old World's and North American forms. Two Chinese taxa that are phylogenetically related to western Old World's forms are Hipparion fossatum (= H. forstende) from Baode (Shanxi) and H. hippidiodus from Qingyang (Gansu) and Baode. The former is related to H. mediterraneum and the latter to H. urmiense - platygenys from the Turolian localities in the western Old World. H. fossatum and H. hippidiodus are associated with the “dorcadoides” (open-land) and “mixed” faunas in northern China. Hipparion fossatum that is characterized by POF located close to the orbit co-occurs with large and morphologically specialized form, H. dermatorhinum in Baode (Loc.30). H. hippidiodus with reduced POF is discovered with smaller H. coelophyes in Loc. 43, 44 (Baode) and Loc. 115 (Gansu).The hipparions associated with the “gaudryi” (forest) fauna are characterized by well defined and small POF located far from the orbit. Those forms are: H. platyodus from Loc. 70; H. ptychodus from Loc. 73; H. tylodus from Hsi-Liang in Yushe - Wuxiang basins; and H. sefvei from Loc. 12 at Xin-an in Henan province. H. coelophyes from Baode (Loc.43 & 44) and Qingyang (Loc. 115) also show similar facial morphology to the these forms, although it has small size and shallow POF. Those forms are similar in facial and dental morphology to Hipparion sensu stricto and some species of Cormohipparion in North America.The assemblages of Chinese hipparions are composed of two groups whose members are phylogenetically similar to the forms from both western part of Eurasia and North America. The “gaudryi” fauna is considered younger than the other two on the basis of faunal analyses. The similarity in hipparionine taxonomy between northern China and North America in the latest Miocene is an evidences for possible faunal interchange(s) occurred during that period, as suggested by taxonomic analyses on carnivores and proboscideans in eastern half of Eurasia and North America.

scholarly journals Productivity of Ospreys, Pandion haliaetus, Affected by Water Levels Near Loon Lake, Saskatchewan, 1975-2002

2010 ◽  
Vol 124 (3) ◽  
pp. 219
Author(s):  
C. Stuart Houston ◽  
Frank Scott ◽  
Rob B. Tether
Keyword(s):  
Breeding Success ◽  
Water Levels ◽  
Lake Levels ◽  
The West ◽  
Canadian Data ◽  
Human Use ◽  
The Town ◽  
Western Half ◽  
Eastern Half

Between 1975 and 2002, diminished breeding success of Ospreys was associated with drought and falling lake levels in the western half of our study area near the town of Loon Lake, west-central Saskatchewan. Only 46% of nest attempts were successful in the west compared to 72% in the east, producing 0.88 young per accessible nest in the west and 1.42 in the east. Breeding success was greater in the eastern half, where water levels were stable, in spite of increased human use of the resort lakes there. Our unique long-term Canadian data base results support Ogden's 1977 prediction that Osprey productivity may decrease when water levels drop and fish populations are reduced.

Farmers and the Market in Antebellum America: A View from the Georgia Upcountry

1987 ◽  
Vol 47 (3) ◽  
pp. 627-647 ◽  
Author(s):  
David F. Weiman
Keyword(s):  
Local Development ◽  
Household Wealth ◽  
Capital Gains ◽  
Farm Households ◽  
Market Development ◽  
Antebellum America ◽  
Market Production ◽  
Lower South ◽  
Western Half ◽  
Eastern Half

The Upcountry of the Lower South was located on the periphery of the antebellum cotton economy, but some of its subregions were integrated into the market system in the 1850s. An analysis of sample counties in the Georgia Upcountry demonstrates that the spread of market production into the western half of the region depended on local development which created opportunities for diversified market production and increased household wealth through capital gains on improvements. The absence of market development in the eastern half of the region, in contrast, limited the wealth of farm households, reinforcing their economic isolation.

Contribution a l'etude geomorphologique du nord-est du Bresil

1961 ◽  
Vol S7-III (5) ◽  
pp. 492-500
Author(s):  
Andre R. Meunier
Keyword(s):  
Rio Grande ◽  
The North ◽  
Littoral Region ◽  
Morphologic Characteristics ◽  
Western Half ◽  
Eastern Half ◽  
Semi Arid

Abstract A region of 40,000 km <sup>2</sup> in the States of Pernambuco, Paraiba, and Rio Grande do Norte in northeastern Brasil, drained to the north by the Piranhas river and to the east by the Paraiba river, exhibits a series of Cenozoic erosion levels showing the morphologic characteristics of littoral and interior zones. Rocks of the region are a poorly-known Precambrian complex attributed to the Algonkian. In the semi-arid western half of the region, west of the meridian of Campina Grande, are the Chapadas, Soledad, and Patos levels, respectively at 830-650, 600-550, and 300-250 m elevation. In the eastern half of the littoral region are the Borborema and Umbuzeiro surfaces, the probably Pliocene Tabuleiros gently sloping from 200 to 20 m at the seacoast, and the Itabaiana surface at about 90 m. These features reflect successive border flexures of the Brazilian shield, and progressive accentuation of an enormous fold at depth.

Paleomagnetism and U–Pb geochronology of the 2.17 Ga Biscotasing dyke swarm, Ontario, Canada: evidence for vertical-axis crustal rotation across the Kapuskasing Zone

2004 ◽  
Vol 41 (3) ◽  
pp. 255-269 ◽  
Author(s):  
Henry C Halls ◽  
Donald W Davis
Keyword(s):  
Vertical Axis ◽  
Paleomagnetic Data ◽  
Dyke Swarm ◽  
Superior Province ◽  
Hudson Bay ◽  
Short Period ◽  
Western Half ◽  
Eastern Half

U–Pb dates on baddeleyite yield ages of 2167.8 ± 2.2 and 2171.6 ± 1.2 Ma on two northeast-trending dykes west of the Kapuskasing Zone in Ontario, Canada. These ages identify the dykes as belonging to the Biscotasing dyke swarm east of the Kapuskasing Zone, which was previously dated at 2166.7 ± 1.4 Ma by U–Pb on baddeleyite and zircon. The new dates show that the Biscotasing swarm was emplaced over an area of at least 300 000 km2, much larger than hitherto suspected, and in a geologically short period of time of about 5 million years. A comparison of paleomagnetic data from Biscotasing and 2.45 Ga Matachewan dykes on either side of the Kapuskasing Zone suggests that the western half of the Superior Province has rotated about 10°–20° counterclockwise relative to the eastern half across the Kapuskasing Zone. This movement may have been accompanied by rifting farther north which ultimately led to the Paleoproterozoic embayment, underlying Hudson Bay, that gives the Superior Province its characteristic butterfly-shaped outline.

Freight Capacity and Utilization of the Erie and Great Lakes Canals before 1850

1976 ◽  
Vol 36 (4) ◽  
pp. 852-877 ◽  
Author(s):  
Thomas F. McIlwraith
Keyword(s):  
Nineteenth Century ◽  
North America ◽  
Great Lakes ◽  
Canal Enlargement ◽  
The Relationship ◽  
Eastern Half ◽  
St Lawrence River

This paper deals with the relationship between tonnage capacity and utilization of the Erie, Welland and St. Lawrence River canals before 1850. Estimates are presented for the capacities of the canals, as built and modified. Comparison with the actual tonnage carried eastward for selected years shows that the British canals were grossly and increasingly underutilized, while the Erie's utilization was closely correlated with its capability, particularly through its eastern half. Reasons for this situation are given and it is argued that had British funds been redirected away from canal enlargement and applied to the construction of vessels and harbor facilities, the British might have entered upon a prosperous carrying trade within North America in the second quarter of the nineteenth century.

scholarly journals Hush-hushing the whole matter: The UNHCR, Australia, and West Papuan Refugees

Refuge ◽  
2006 ◽  
pp. 69-80
Author(s):  
Klaus Neumann
Keyword(s):  
Asylum Seekers ◽  
New Guinea ◽  
Historical Case Study ◽  
Australian Government ◽  
Historical Case ◽  
High Commissioner ◽  
The Relationship ◽  
Western Half ◽  
Eastern Half

Between 1962 and 1973, thousands of refugees crossed from the Indonesian-controlled western half of the island of New Guinea into the Australian-controlled eastern half. The United Nations High Commissioner for Refugees (UNHCR) refrained from becoming involved in the issue, and from publicly criticizing the Australian government over its response to West Papuan asylum seekers. In return, the Australian government committed itself to keeping the High Commissioner informed about developments in New Guinea on the understanding that it would provide information on a strictly confidential basis. The article explores the High Commissioner’s possible motives for effectively condoning Australia’s refugee policies in Papua and New Guinea. It demonstrates the relevance of this historical case study for our understanding of current Australian policies and for evaluating the relationship between the UNHCR and governments.

Tecumseh and the Shawnee Resistance Movement

2016 ◽  
Author(s):  
Stephen Warren
Keyword(s):  
North America ◽  
19Th Century ◽  
Early American History ◽  
Early American ◽  
Cultural Ideals ◽  
History Of ◽  
Resistance Movement ◽  
The 19Th Century ◽  
Eastern Half ◽  
Established Order

Described as a “chief among chiefs” by the British, and by his arch-rival, William Henry Harrison, as “one of those uncommon geniuses which spring up occasionally to produce revolutions and overturn the established order of things,” Tecumseh impressed all who knew him. Lauded for his oratory, military and diplomatic skills, and, ultimately, his humanity, Tecumseh presided over the greatest Indian resistance movement that had ever been assembled in the eastern half of North America. His genius lay in his ability to fully articulate religious, racial, and cultural ideals borne out of his people’s existence on fault lines between competing empires and Indian confederacies. Known as “southerners” by their Algonquian relatives, the Shawnees had a history of migrating between worlds. Tecumseh, and his brother, Tenskwatawa, converted this inheritance into a widespread social movement in the first decade and a half of the 19th-century, when more than a thousand warriors, from many different tribes, heeded their call to halt American expansion along the border of what is now Ohio and Indiana. Tecumseh articulated a vision of intertribal, pan-Indian unity based on revitalization and reform, and his ambitions very nearly rewrote early American history.

scholarly journals The Flow of Water Past the Seven Stones Lightvessel

1934 ◽  
Vol 19 (2) ◽  
pp. 921-930 ◽  
Author(s):  
J. N. Carruthers
Keyword(s):  
Wind Speed ◽  
Residual Current ◽  
The State ◽  
Entire Period ◽  
Northern Half ◽  
The Individual ◽  
The Right ◽  
Western Half ◽  
Eastern Half

A brief reference to the state of opinion concerning the water movements off S.W. England is made. Then a series of Drift Indicator records relating to 28 days of observation at 6 fathoms depth from the Seven Stones Lightvessel is presented and discussed. An overall flow of water towards the S.E. quadrant and of speed approaching 2 miles per day characterised the entire period. The residual current as worked out for the individual records, displayed considerable variation in speed and direction—setting as frequently towards the northern half of the compass as towards the southern, but more frequently towards the eastern half than towards the western half. There were pronounced changes in the wind speed and direction, and it appears as though the wind can drive the water at 6 fathoms depth towards a point to the right of its own direction, no matter from which of the four quadrants it blows.

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