There are six distinct classes of gold deposits, each represented by metallogenic provinces, having 100's to >1000 tonne gold production. The de
Hasegawa, H. S.(1985),Attenuation of Lg Waves in the Canadian Shield, Bull. Seismol. Soc. Am.75, 1569–1582. Google Scholar Herraiz, M., andEspinosa, A. F.(1986),Scattering and Attenuation of High Frequency Seismic Waves: Development of the Theory of Coda Waves, U.S.G.S. Open Fil...
The radiogenic argon-40 contents of several nephelines from the Grenville Province of the Canadian Shield have been determined using an MS10 mass spectrometer and their potassium contents measured by flame photometry. The calculated potassium-argon ages near 1 b.y. are never less than similar ages...
It indicates that these two regions of the Canadian Shield are under compression. These focal mechanisms and the epicentral distribution of the induced earthquakes at LG-3 suggest that, except for the previously mapped LG-3 fault, the direction of the streams (E-W and SW-NE) represents the ...
An analysis of three-dimensional ground movements: the Thunder Bay tunnel A three-dimensional (3D) elastoplastic finite-element analysis, which is capable of simulating the advance of a tunnelling shield and the associated ground... KM Lee,RK Rowe - 《Canadian Geotechnical Journal》 被引量: 374...
aappalachian highland, canadian shield ,arctic ,lowlands ,interior plains, cordillera 阿巴拉契亚高地,加拿大盾,北极,低地,内部平原,山脉 [translate] ahaftung auf dem recht rauen holz 黏附力在那相当rauen木头 [translate] a妈妈,您辛苦了! Mom, you work hard! ; [translate] aDid you close all the ...
Contrasting seismic characteristics of three major faults in northwestern Canada.doi:10.1139/E05-027The Lithoprobe Slave – Northern Cordillera Lithospheric Evolution (SNORCLE) profiles crossed three major tectonic zones of the northwestern Canadian Shield and northern Canadian Cordillera that are diverse in...
Canadian Shield 加拿大地盾(区) 北美洲板块是最坚硬、最稳定的核心,又称为前寒武纪地盾 区,或者加拿大高地区。主要是由六亿多年前的前寒武纪岩 石构成。它的覆盖面积达四百五十万平方公里,约占加拿大 领土面积的一半,也是加拿大的地理核心。 Imperceptible 感觉无不到的;极细微的 Fringe 边缘;穗;边缘的;附加的 ...
Post-convergent structures in lower parts of the 1090─1050 Ma (early-Ottawan) thrust-sheet stack, Grenville Province of Ontario, southern Canadian Shield1 Remnants of the early-Ottawan thrust-sheet stack are exposed in the Central Gneiss Belt (CGB, lower portion of stack) and the Composite Arc...
Dissolved organic matter (DOM), a pivotal component in the global carbon cycle, plays a crucial role in maintaining the productivity and functionality of a