An 40Ar/39Ar geochronological study of the Elzevir batholith and its bearing on the tectonothermal history of the southwestern Grenville Province, Canada

1988 ◽  
Vol 25 (11) ◽  
pp. 1834-1845 ◽  
Author(s):  
J. A. Hanes ◽  
S. J. Clark ◽  
D. A. Archibald
Keyword(s):  
Potassium Feldspar ◽  
Age Difference ◽  
The West ◽  
Slow Cooling ◽  
Grenville Province ◽  
Cooling Path ◽  
Time Period ◽  
Step Heating ◽  
Geochronological Study ◽  
History Of

Results of 40Ar/39Ar step heating for muscovite, potassium feldspar, and plagioclase from the ca. 1240 Ma Elzevir trondhjemite in the Central Metasedimentary Belt of the Canadian Grenville Province have been combined with earlier data and used to deduce a thermal history for the eastern Elzevir terrane following the Ottawan orogeny (1050–950 Ma). Muscovite yielded precise plateau dates of ca. 900 Ma, whereas the potassium feldspar displayed disturbed age spectra with ca. 730–760 Ma dates for broad "plateau" regions. This age difference could be explained by slow cooling or by thermal overprinting at 760–800 Ma that has updated the microcline. The plagioclase spectra provide evidence for a low-temperature hydrothermal event ca. 380 Ma ago that has generated sericite in saussurite and has caused partial argon loss from the microcline. This result agrees with the other plagioclase thermochronometry and paleomagnetism on the Cordova gabbro 25 km to the west but provides a lower estimate for the upper age bracket of this event. It is suggested that earlier models of protracted, post-700 Ma cooling of this part of the Grenville orogen may be a consequence of variable updating of plagioclase by this Devonian alteration event.Results of 40Ar/39Ar step heating for muscovite and microcline from the Bark Lake diorite in the Bancroft terrane are in agreement with earlier work in this area, and the cooling path of the Elzevir trondhjemite is seen to be indistinguishable, within the limitations of the method, from that of the Bark Lake diorite in the time period 1050–750 Ma.

Tectonic implications of 40Ar/39Ar muscovite dates from the Mt. Haley stock and Lussier River stock, near Fort Steele, British Columbia

2006 ◽  
Vol 43 (11) ◽  
pp. 1673-1684 ◽  
Author(s):  
Kyle P Larson ◽  
Raymond A Price ◽  
Douglas A Archibald
Keyword(s):  
British Columbia ◽  
Single Crystal ◽  
Rocky Mountains ◽  
Potassium Feldspar ◽  
Canadian Rocky Mountains ◽  
The West ◽  
Lower Paleozoic ◽  
Tectonic Implications ◽  
West Limb ◽  
Step Heating

The Mt. Haley and Lussier River stocks are located northeast of Cranbrook, B.C. near the south end of the Western Main Ranges of the Southern Canadian Rocky Mountains. Both are multiphase, potassium-feldspar porphyritic monzonite plutons that intrude lower Paleozoic miogeoclinal strata. They crosscut and thermally overprint the Lussier River fault and the thrust and fold structures in the east flank of the Purcell anticlinorium and the west limb of the Porcupine Creek anticlinorial fan structure. Muscovite from the Mt. Haley stock yielded a 40Ar/39Ar plateau age of 108.2 ± 0.7 Ma (2σ), and a single-crystal, step-heating analysis of muscovite from a skarn in the metamorphic aureole adjacent to the Lussier River stock gave a plateau date of 108.7 ± 0.6 Ma (2σ). These dates constrain the timing of thrusting and folding in this portion of the western Rocky Mountains and of the displacement along the Lussier River – St. Mary fault to pre-middle Albian.

Dreams of Greatness

2016 ◽  
Author(s):  
Michael Kinch
Keyword(s):  
Modern Society ◽  
Second World War ◽  
World War ◽  
The West ◽  
Trace Back ◽  
Time Period ◽  
Life Saving ◽  
History Of ◽  
The Impact ◽  
Second World

This chapter details the birth of the pharmaceutical industry, whose roots trace back more than six millennia. While modern society struggles with opiate addiction, the problem is centuries old and fostered a literal trade war in the form of the Opium Wars of the 19th century and whose scars still muddle international relations of China with the West today. During this same time period, improvements in understanding opium facilitated the discovery of new and more potent products that nurtured modern companies such as Merck & Co. Perhaps no other discovery has impacted the industry or public health as much as antibiotics and we trace the history of these medicines and debunk misunderstandings and misattributions associated with their discovery. The impact of antibiotics was propelled by the Second World War, which also gave rise to the first treatments for cancer when two top-secret projects, one at Yale and another resulting from an audacious raid by the Luftwaffe upon an Italian port town, unexpectedly revealed the life-saving implications of mustard gas. Finally, we relate the triumphant and turbulent relationships that gave rise to the discoveyr of insulin and its widespread distribution by a paragon of “ethical pharmaceuticals”, Eli Lilly & Company.

The Tempo and mode(S) of Prebiotic Evolution

1997 ◽  
Vol 161 ◽  
pp. 419-429 ◽  
Author(s):  
Antonio Lazcano
Keyword(s):  
Origin Of Life ◽  
Organic Compounds ◽  
Biological Evolution ◽  
Current Evidence ◽  
Early Diversification ◽  
Time Period ◽  
The Galaxy ◽  
History Of ◽  
Widespread Phenomenon ◽  
The Origin Of Life

AbstractDifferent current ideas on the origin of life are critically examined. Comparison of the now fashionable FeS/H2S pyrite-based autotrophic theory of the origin of life with the heterotrophic viewpoint suggest that the later is still the most fertile explanation for the emergence of life. However, the theory of chemical evolution and heterotrophic origins of life requires major updating, which should include the abandonment of the idea that the appearance of life was a slow process involving billions of years. Stability of organic compounds and the genetics of bacteria suggest that the origin and early diversification of life took place in a time period of the order of 10 million years. Current evidence suggest that the abiotic synthesis of organic compounds may be a widespread phenomenon in the Galaxy and may have a deterministic nature. However, the history of the biosphere does not exhibits any obvious trend towards greater complexity or «higher» forms of life. Therefore, the role of contingency in biological evolution should not be understimated in the discussions of the possibilities of life in the Universe.

A note on John Hawkins (1761–1841) and the Hawkins archive

2000 ◽  
Vol 27 (2) ◽  
pp. 261-268
Author(s):  
R. J. CLEEVELY
Keyword(s):  
Major Part ◽  
Reference Lists ◽  
The West ◽  
History Of ◽  
The 1960S

A note dealing with the history of the Hawkins Papers, including the material relating to John Hawkins (1761–1841) presented to the West Sussex Record Office in the 1960s, recently transferred to the Cornwall County Record Office, Truro, in order to be consolidated with the major part of the Hawkins archive held there. Reference lists to the correspondence of Sibthorp-Hawkins, Hawkins-Sibthorp, and Hawkins to his mother mentioned in The Flora Graeca story (Lack, 1999) are provided.

Fictive Mode, ‘Journey to the West’, and Transformation of Space: ‘Ali Mubarak’s Discourses of Modernization

2007 ◽  
Vol 4 (3) ◽  
pp. 331-358
Author(s):  
WEN-CHIN OUYANG
Keyword(s):  
Cultural Transformation ◽  
Recent History ◽  
Theoretical Principle ◽  
Time And Space ◽  
The West ◽  
Arab Culture ◽  
History Of ◽  
Journey To The West

I begin my exploration of ‘Ali Mubarak (1823/4–1893) and the discourses on modernization ‘performed’ in his only attempt at fiction, ‘Alam al-Din (The Sign of Religion, 1882), with a quote from Guy Davenport because it elegantly sums up a key theoretical principle underpinning any discussion of cultural transformation and, more particularly, of modernization. Locating ‘Ali Mubarak and his only fictional work at the juncture of the transformation from the ‘traditional’ to the ‘modern’ in the recent history of Arab culture and of Arabic narrative, I find Davenport's pronouncement tantalizingly appropriate. He not only places the stakes of history and geography in one another, but simultaneously opens up the imagination to the combined forces of time and space that stand behind these two distinct yet related disciplines.

ANCIENT VALLEYS IN THE WEST PRIBAIKALYE (HISTORY OF FORMATION)

2015 ◽  
pp. 91 ◽  
Author(s):  
V. D. Mats ◽  
I. M. Yefimova ◽  
A. A. Kulchitskii
Keyword(s):  
The West ◽  
History Of ◽  
History Of Formation

Magistri Legis. Eine Studie zur dogmatischen Funktion im industriellen System

2011 ◽  
Vol 2 (2) ◽  
pp. 69-112
Author(s):  
Pierre Legendre
Keyword(s):  
Social Function ◽  
Modern Human ◽  
Human Behaviour ◽  
Cultural Reproduction ◽  
Industrial System ◽  
The West ◽  
History Of ◽  
History Of Law ◽  
New Look

"Der Beitrag reevaluiert die «dogmatische Funktion», eine soziale Funktion, die mit biologischer und kultureller Reproduktion und folglich der Reproduktion des industriellen Systems zusammenhängt. Indem sie sich auf der Grenze zwischen Anthropologie und Rechtsgeschichte des Westens situiert, nimmt die Studie die psychoanalytische Frage nach der Rolle des Rechts im Verhalten des modernen Menschen erneut in den Blick. </br></br>This article reappraises the dogmatic function, a social function related to biological and cultural reproduction and consequently to the reproduction of the industrial system itself. On the borderline of anthropology and of the history of law – applied to the West – this study takes a new look at the question raised by psychoanalysis concerning the role of law in modern human behaviour. "

Century of Ukraine's diplomatic service

2017 ◽  
pp. 77-94
Author(s):  
Yuriy Makar
Keyword(s):  
Twentieth Century ◽  
Soviet Union ◽  
State Committee ◽  
The West ◽  
Sovereign State ◽  
The Soviet Union ◽  
National University ◽  
Central Council ◽  
History Of ◽  
Late Twentieth

On December 22, 2017 the Ukrainian Diplomatic Service marked the 100thanniversary of its establishment and development. In dedication to such a momentous event, the Department of International Relations of Yuriy Fedkovych Chernivtsi National University has published a book of IR Dept’s ardent activity since its establishment. It includes information both in Ukrainian and English on the backbone of the collective and their versatile activities, achievements and prospects for the future. The author delves into retracing the course of the history of Ukrainian Diplomacy formation and development. The author highlights the roots of its formation, reconsidering a long way of its development that coincided with the formation of basic elements of Ukrainian statehood that came into existence as a result of the war of national liberation – the Ukrainian Central Rada (the Central Council of Ukraine). Later, the Ukrainian or so-called State the Hetmanate was under study. The Directorat (Directory) of Ukraine, being a provisional collegiate revolutionary state committee of the Ukrainian People’s Republic, was given a thorough study. Of particular interest for the research are diplomatic activities of the West Ukrainian People`s Republic. Noteworthy, the author emphasizes on the Ukrainian Socialist Soviet Republic’s foreign policy, forced by the Bolshevist Russia. A further important implication is both the challenges of the Ukrainian statehood establishing and Ukraine’s functioning as a state, first and foremost, stemmed from the immaturity and conscience-unawareness of the Ukrainian society, that, ultimately, has led to the fact, that throughout the twentieth century Ukraine as a statehood, being incorporated into the Soviet Union, could hardly be recognized as a sovereign state. Our research suggests that since the beginning of the Ukrainian Diplomacy establishment and its further evolution, it used to be unprecedentedly fabricated and forged. On a wider level, the research is devoted to centennial fight of Ukraine against Russian violence and aggression since the WWI, when in 1917 the Russian Bolsheviks, headed by Lenin, started real Russian war against Ukraine. Apropos, in the about-a-year-negotiation run, Ukraine, eventually, failed to become sovereign. Remarkably, Ukraine finally gained its independence just in late twentieth century. Nowadays, Russia still regards Ukraine as a part of its own strategic orbit,waging out a carrot-and-stick battle. Keywords: The Ukrainian People’s Republic, the State of Ukraine, the Hetmanate, the Direcorat (Directory) of Ukraine, the West Ukrainian People`s Republic, the Ukrainian Socialist Soviet Republic, Ukraine, the Bolshevist Russia, the Russian Federation, Ukrainian diplomacy

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