scholarly journals Stratigraphy tephrochronology, and structure of part of the Miocene Truckee Formation in the Trinity Range-Hot Springs Mountains area, Churchill County, west-central Nevada

1999 ◽  
Author(s):  
John H. Stewart ◽  
M.E. Perkins
Keyword(s):  

1982 ◽  
Vol 19 (4) ◽  
pp. 755-766 ◽  
Author(s):  
H. L. Lam ◽  
F. W. Jones ◽  
C. Lambert

Temperature data from petroleum exploration well logs of 3360 wells in a region of west-central Alberta are used to estimate thermal gradients. A relatively high geothermal gradient (~36 °C/km) of oblong shape located near Hinton is observed. The axis of the anomaly strikes approximately southwest–northeast and passes through the Miette Hot Springs area. It appears that water is heated at depth in the Rocky Mountain disturbed region and travels eastward and toward the surface along fault planes.





2020 ◽  
Vol 91 (5) ◽  
pp. 2473-2486 ◽  
Author(s):  
Max Suter

Abstract The continental part of west-central Mexico is characterized by the active extensional tectonic regimes of the Trans-Mexican volcanic belt and the adjacent southern Basin and Range Province. The deformation of the latter is distributed over several topographically very pronounced grabens and half-grabens (width 10–20 km, length ≤200  km; throw 1–2 km), including the Aguascalientes, Juchipila, Tlaltenango, and Bolaños grabens. Here, an A.D. 1774–1775 earthquake series in that area is documented based on numerous contemporary sources. The 6 November 1774 mainshock caused moderate-to-severe damage in several communities of the Bolaños graben, including the silver mining town of Bolaños, and moderate damage to communities in the Tlaltenango graben, such as the administrative center of Colotlán. Based on the macroseismic intensity distribution, the epicenter was in the Bolaños graben. The preferred magnitude of the mainshock is ∼6.0±0.5. No major historical earthquake had been reported previously from this region. Existing ground-shaking hazard models may, therefore, give a false sense of security. In the Bolaños graben, motion along the graben-bounding faults and the observed tilting of the graben shoulders has to be mostly younger than the 19.9 Ma age of the youngest basalt of the graben-shoulder stratigraphy. Its correlation across the western master fault indicates a 1300 m throw and a vertical long-term slip rate of 0.07  mm/yr. The observations of alluvial fan deposits juxtaposed against the footwall ignimbrites along the western master fault of the Bolaños graben, the displacement of alluvial fan deposits along secondary faults within the graben, and the existence of hot springs along the western boundary fault all are indicative of active deformation, and so is evidently the A.D. 1774 earthquake.





2016 ◽  
Vol 25 (2) ◽  
pp. 225-242
Author(s):  
Cal Revely-Calder

Critics have recently begun to pay attention to the influence Jean Racine's plays had on the work of Samuel Beckett, noting his 1930–31 lectures at Trinity College Dublin, and echoes of Racine in early texts such as Murphy (1938). This essay suggests that as well as the Trinity lectures, Beckett's later re-reading of Racine (in 1956) can be seen as fundamentally influential on his drama. There are moments of direct allusion to Racine's work, as in Oh les beaux jours (1963), where the echoes are easily discernible; but I suggest that soon, in particular with Come and Go (1965), the characteristics of a distinctly Racinian stagecraft become more subtly apparent, in what Danièle de Ruyter has called ‘choix plus spécifiquement théâtraux’: pared-down lighting, carefully-crafted entries and exits, and visual tableaux made increasingly difficult to read. Through an account of Racine's dramaturgy, and the ways in which he structures bodily motion and theatrical talk, I suggest that Beckett's post-1956 drama can be better understood, as stage-spectacles, in the light of Racine's plays; both writers give us, in Myriam Jeantroux's phrase, the complicated spectacle of ‘un lieu à la fois désert et clôturé’. As spectators to Beckett's drama, by keeping Racine in mind we can come to understand better the limitations of that spectatorship, and how the later plays trouble our ability to see – and interpret – the figures that move before us.



1945 ◽  
Vol 14 (2) ◽  
pp. 16-22
Author(s):  
William C. Johnstone
Keyword(s):  


2017 ◽  
Vol 1 (1) ◽  
pp. 1-6
Author(s):  
Jennifer M. Bernstein

Vickers Hot Springs is located near the rural Southern California town of Ojai, and local residents have long enjoyed soaking in the sulfuric pools. But as knowledge of the springs spread, the area saw increases in fights, traffic, burglaries, and drug use. In response, two residents purchased the land and committed to restore the property while allowing limited public access, subsequently generating a great deal of controversy within the community. Privatizing Vickers Hot Springs follows the archetypical lesson of Garrett Hardin's 1968 essay, “The Tragedy of the Commons.” Hardin stated that the problem for common-pool resources was that a finite amount of services are demanded by a potentially infinite number of users, who have little to gain by sacrificing for the common good. But Hardin's theory does not always apply. Many communities have come together to manage resources, often without government oversight. Thus, the question is not whether or not Hardin's theory is accurate, but rather “under what conditions it is correct and when it makes the wrong predictions.” Case studies provide nuance to the broad brushstrokes of a theory, and whether Hardin's parable is applicable depends on the particularities of the common property resource conflict. Employing the frameworks established by Hardin, Dietz et al., and Ostrom, this paper examines the management of Vickers Hot Springs within its broader social, ecological, and political context, asking whether the particular circumstances of this resource use conflict made privatization the most predictable outcome.





2016 ◽  
Vol 49 (1) ◽  
pp. 121-137
Author(s):  
Jordi Gayà Estelrich


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