CAMBRIAN AND PRECAMBRIAN PETROLEUM AN APPRAISAL

1965 ◽  
Vol 5 (1) ◽  
pp. 7
Author(s):  
Grover E. Murray
Keyword(s):  
United States ◽  
North Africa ◽  
Sedimentary Rocks ◽  
The United States ◽  
Northern Territory ◽  
Early Paleozoic ◽  
Precambrian Rocks ◽  
Late Proterozoic ◽  
Organic Evolution ◽  
Early Phases

Accumulated evidence indicates that (1) the major portion of chemical and organic evolution occurred during the 3-5 x 109 years of the earth's history preceding the Paleozoic; (2) the basic elements constituting petroleum existed in the early phases of the earth's history; (3) unmetamorphosed Precambrian and Cambrian lithic types are similar to younger ones; and (4) the population of the later Precambrian and early Paleozoic seas was relatively rich and varied, though hard skeletal parts are notably absent in the Precambrian rocks and, in all probability, were not widely developed.As petroleum is now generally considered of organic origin and is a widely disseminated and integral part of most sedimentary rocks, unmetamorphosed Precambrian and Cambrian strata should be prospective for petroleum. Discoveries of large reserves of oil in the Cambrian in parts of North Africa, Russia and the United States support this asserted prospectivity. Shows of indigenous gas in the late Proterozoic of the Amadeus Basin, Northern Territory, Australia, indicate that unmetamorphosed Precambrian strata may also yield commercial amounts of hydrocarbons.

Geology and geochronology of Precambrian rocks in the Central Interior region of the United States

1984 ◽  
Author(s):  
Rodger E. Denison ◽  
E.G. Lidiak ◽  
M. E. Bickford ◽  
E.B. Kisvarsanyi
Keyword(s):  
United States ◽  
The United States ◽  
Interior Region ◽  
Precambrian Rocks

Nicholas Said

2021 ◽  
Author(s):  
Mohammed Bashir Salau
Keyword(s):  
United States ◽  
North America ◽  
Middle East ◽  
19Th Century ◽  
North Africa ◽  
The United States ◽  
Primary Sources ◽  
Sahara Desert ◽  
Insight Into

The two versions of the autobiography that Nicholas Said published offer insight into 19th-century conditions in five continents as well as insight into life as a child, slave, manservant, and teacher. As a child in the 1830s, Said was enslaved in Borno, marched across the Sahara Desert, and passed from hand to hand in North Africa and the Middle East. After serving as a slave in various societies, Said was freed by a Russian aristocrat in the late 1850s after accompanying the aristocrat in question to various parts of Europe. In the 1850s, Said also traveled as a manservant for a European traveler to South and North America. Ultimately he settled in the United States, where he authored two versions of his autobiography, served as a teacher and soldier, got married, and disappeared from sight. This article compares the two versions of the autobiography that Said published, provides an overview of Said’s life, charts the development of scholarly works on Said, and draws attention to the primary sources related to the study of Said and his autobiography.

17. Russia, China, and the Middle East

2019 ◽  
pp. 394-414
Author(s):  
Roland Dannreuther
Keyword(s):  
United States ◽  
Middle East ◽  
North Africa ◽  
The United States ◽  
First Century ◽  
The West ◽  
East Russia ◽  
Twenty First Century

This chapter addresses the important relationships that are currently evolving between Russia, China, and the Middle East. Russia and China have emerged as increasingly powerful actors in the Middle East and their presence and influence in the region has grown significantly. While both states have had longstanding historical links with the region, the twenty-first-century panorama is a quite distinctive one, with new economic and geopolitical factors driving a return to Middle East and North Africa (MENA). In addition, significant Muslim populations in both countries add another dynamic to contemporary Russian and Chinese relations with MENA. The chapter then identifies the challenges this presents for the United States and the West, and how the states and peoples of the Middle East are responding to the resurgence of Russian and Chinese power in the region.

The New “Black Death”: Cholera in Brazil, 1855-1856

1986 ◽  
Vol 10 (4) ◽  
pp. 467-488
Author(s):  
Donald B. Cooper
Keyword(s):  
United States ◽  
Central America ◽  
North Africa ◽  
River Basins ◽  
The United States ◽  
Black Death ◽  
Northern Province ◽  
The Caribbean ◽  
Intense Heat ◽  
Effective Buffer

On repeated occasions in the nineteenth century, Asian cholera irrupted from its traditional center in the great river basins of India and spread in pandemic waves throughout parts of Europe, North Africa, and North America. In Spain alone 600,000 deaths resulted from cholera during four great invasions (Cárdenas, 1971: 224). The United States experienced terrifying outbreaks beginning in 1832, 1849, and 1866 (Rosenberg, 1962) which also touched parts of Mexico, Central America, and the Caribbean. Initially South America escaped the onslaught. Some Brazilians speculated that the intense heat of the equator, or the vast expanse of the Atlantic ocean, somehow offered an effective buffer to the southward spread of cholera (Rego, 1872: 84). But this “sweet illusion” was shattered in 1855. Indeed the first city in Brazil struck by Asian cholera was Belém, capital of the vast northern province of Pará located astride the equator at the mouth of the Amazon river.

Lead and sulfur isotope investigation of Paleozoic sedimentary rocks from the southern Midcontinent of the United States; implications for paleohydrology and ore genesis of the Southeast Missouri lead belts

1995 ◽  
Vol 90 (7) ◽  
pp. 1875-1910 ◽  
Author(s):  
Martin B. Goldhaber ◽  
Stanley E. Church ◽  
Bruce R. Doe ◽  
John N. Aleinikoff ◽  
Joyce C. Brannon ◽  
...  
Keyword(s):  
United States ◽  
Sulfur Isotope ◽  
Sedimentary Rocks ◽  
The United States ◽  
Ore Genesis ◽  
Southeast Missouri

Question: How Have Middle East Scholars Contributed to the Broader Field of Gender and Women's Studies?

2008 ◽  
Vol 40 (1) ◽  
pp. 16-18 ◽  
Author(s):  
VALENTINE M. MOGHADAM
Keyword(s):  
United States ◽  
Middle East ◽  
Women's Studies ◽  
North Africa ◽  
Rockefeller Foundation ◽  
The United States ◽  
The State ◽  
High Quality ◽  
Women’S Studies ◽  
Monograph Series

In August 2001, a conference on the state of Middle East women's studies took place at the Rockefeller Foundation Center in Bellagio, Italy. Apart from the gorgeous surroundings, the conference was memorable for the breadth and scope of the high-quality papers presented by scholars teaching in the United States, Europe, the Middle East, and North Africa. Many participants were active in the Association for Middle East Women's Studies. Some went on to establish the Journal of Middle East Women's Studies, Hawwa, and Brill's women and Islam monograph series. Most of us also publish in disciplinary journals and present papers at a variety of conferences.

U–Pb geochronology of the Moyie sills, Purcell Supergroup, southeastern British Columbia: implications for the Mesoproterozoic geological history of the Purcell (Belt) basin

1995 ◽  
Vol 32 (8) ◽  
pp. 1180-1193 ◽  
Author(s):  
H. Elizabeth Anderson ◽  
Donald W. Davis
Keyword(s):  
United States ◽  
Tectonic Setting ◽  
Sedimentary Rocks ◽  
The United States ◽  
The Other ◽  
Soft Sediment ◽  
Geological History ◽  
Sedimentary Sequence ◽  
Belt Supergroup ◽  
History Of

The Mesoproterozoic Purcell Supergroup (and its equivalent in the United States, the Belt Supergroup) is a thick sedimentary sequence formed in an extensional basin of uncertain age and tectonic setting. The voluminous tholeiitic Moyie sills intrude turbidites of the lower and middle Aldridge Formation, the lowest division of the Purcell Supergroup. Many of the sills were intruded into soft sediment and one intrudes the Sullivan sedimentary exhalative (SEDEX) orebody, so their age approximates that of the sediments and the Sullivan deposit. New U–Pb dates of zircon from four sills are older than previously published U–Pb zircon ages. One sill contained concordant zircons with an age of 1468 ± 2 Ma. Near concordant zircons from the other samples have similar 207Pb/206Pb ages, indicating that all of the sills crystallized at the same time. U–Pb dates of titanites from two of these sills yielded concordant dates ranging from 1090 to 1030 Ma, indicating that they have undergone a previously unrecognized Grenville-age metamorphism. The U–Pb systematics of abraded zircons from one sill indicate that they have also been affected by this event. The recognition of Grenville-age metamorphism in the Purcell (Belt) basin suggests that the prevalent 1.0–1.1 Ga Rb–Sr and K–Ar mineral and whole-rock dates from a wide variety of Purcell (Belt) igneous and sedimentary rocks are also metamorphic, and are not ages of sedimentation or "hybrid" dates reflecting partial resetting by the ca. 760 Ma Goat River orogeny. On this basis, all sedimentation in the Purcell (Belt) basin is constrained to be older than 1.1 Ga and is probably older than 1.25 Ga.

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