HISTORY OF EXHUMATION AND RELATED STRUCTURAL RELIEF GENERATION FOR THE SOUTHERNMOST SIERRA NEVADA BATHOLITH, AND TECTONIC FORCING INTERPRETATIONS

2020 ◽  
Author(s):  
Jason Saleeby ◽  
◽  
Alan D. Chapman

1973 ◽  
Vol 39 (301) ◽  
pp. 58-64 ◽  
Author(s):  
F. C. W. Dodge

SummaryOccurrence and major- and minor-element compositions of chlorites from plutonic rocks of the central Sierra Nevada batholith have been studied in detail.Chlorite has formed largely as an alteration product of biotite, presumably late in the magmatie history of the granitic rocks as a result of subsolidus reaction. Major-element composition of chlorite is strongly influenced by composition of coexisting biotite. Minor-element differences between the two minerals can, for the most part, be attributed to structural differences. The minor-element data, particularly for Cu, indicate that the process of chloritization is not a likely mechanism for release of ore metals from primary minerals.





2011 ◽  
Vol 163 (3) ◽  
pp. 449-465 ◽  
Author(s):  
Jesse W. Davis ◽  
Drew S. Coleman ◽  
John T. Gracely ◽  
Richard Gaschnig ◽  
Michael Stearns




2021 ◽  
Vol 30 (4) ◽  
pp. 255
Author(s):  
Jon E. Keeley ◽  
Anne Pfaff ◽  
Anthony C. Caprio

History of prescription burning and wildfires in the three Sierra Nevada National Park Service (NPS) parks and adjacent US Forest Service (USFS) forests is presented. Annual prescription (Rx) burns began in 1968 in Sequoia and Kings Canyon National Parks, followed by Yosemite National Park and Lassen Volcanic National Park. During the last third of the 20th century, USFS national forests adjacent to these parks did limited Rx burns, accounting for very little area burned. However, in 2004, an aggressive annual burn program was initiated in these national forests and in the last decade, area burned by planned prescription burns, relative to area protected, was approximately comparable between these NPS and USFS lands. In 1968, the NPS prescription burning program was unique because it coupled planned Rx burns with managing many lightning-ignited fires for resource benefit. From 1968 to 2017, these natural fires managed for resource benefit averaged the same total area burned as planned Rx burns in the three national parks; thus, they have had a substantial impact on total area burned by prescription. In contrast, on USFS lands, most lightning-ignited fires have been managed for suppression, but increasing attention is being paid to managing wildfires for resource benefit.



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