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Sonoma volcanic field

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Journal Article
Journal: Geosphere
Published: 01 June 2011
Geosphere (2011) 7 (3): 629–657.
...Donald S. Sweetkind; James J. Rytuba; Victoria E. Langenheim; Robert J. Fleck Abstract Volcanic rocks in the Sonoma volcanic field in the northern California Coast Ranges contain heterogeneous assemblages of a variety of compositionally diverse volcanic rocks. We have used field mapping, new...
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Journal Article
Journal: Geosphere
Published: 01 June 2011
Geosphere (2011) 7 (3): 658–683.
..., are part of the Tolay Volcanics. Other new dates reported herein show that volcanic rocks in the Meacham Hill area and extending southwest to the Burdell Mountain fault are also part of the Tolay Volcanics. In the Sonoma volcanic field, strongly bimodal volcanic sequences are intercalated with sediments...
FIGURES | View All (10)
Series: Society of Economic Geologists Guidebook Series
Published: 01 January 1993
DOI: 10.5382/GB.16
EISBN: 9781934969694
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40 AR&#x2F; 39 AR AGES OF TEPHRA LAYERS ERUPTED FROM THE <span class="search-highlight">SONOMA</span> <span class="search-highlight">VOLCANIC</span> <span class="search-highlight">FIELD</span>, ...
Published: 01 June 2011
TABLE 8. 40 AR/ 39 AR AGES OF TEPHRA LAYERS ERUPTED FROM THE SONOMA VOLCANIC FIELD, CENTRAL COAST RANGES, CALIFORNIA, OBTAINED IN THIS STUDY, COMPARED TO K-AR AGES OBTAINED IN PREVIOUS STUDIES
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Simplified geologic map of the <span class="search-highlight">Sonoma</span> <span class="search-highlight">volcanic</span> <span class="search-highlight">field</span> showing place names ci...
Published: 01 June 2011
Figure 2. Simplified geologic map of the Sonoma volcanic field showing place names cited in text. Volcanic geology modified from Saucedo et al. (2002) , Graymer et al. (2006a , 2007 ). Black lines are faults, sense of displacement not shown (modified from Bryant, 2005 ; Graymer et al., 2006b
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Simplified geologic map of the <span class="search-highlight">Sonoma</span> <span class="search-highlight">volcanic</span> <span class="search-highlight">field</span> showing location of vo...
Published: 01 June 2011
Figure 3. Simplified geologic map of the Sonoma volcanic field showing location of volcanic centers. Volcanic geology and faults as shown on Figure 2 . Volcanic centers: AD—Annadel; AH—Arrowhead; BM—Bismarck Knob; CD—Calistoga Dome field; CS—Cup and Saucer; MG—Mount George; MSH—Mount St. Helena
Series: Society of Economic Geologists Guidebook Series
Published: 01 January 1993
DOI: 10.5382/GB.16
EISBN: 9781934969694
Series: Society of Economic Geologists Guidebook Series
Published: 01 January 1993
DOI: 10.5382/GB.16
EISBN: 9781934969694
...Abstract Abstract Epithermal precious-metal and mercury deposits are present in the Sonoma and Clear Lake volcanic fields of central California and several hot springs in the Clear Lake volcanic field are presently depositing mercury and gold. The deposits and hot springs are associated...
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(A) Total alkalies-silica diagram ( Le Bas et al., 1986 ) for the various v...
Published: 01 June 2011
Figure 8. (A) Total alkalies-silica diagram ( Le Bas et al., 1986 ) for the various volcanic centers within the Sonoma volcanic field. Alkaline-subalkaline series boundary from Macdonald and Katsura (1964) . (B) Potassium oxide-silica diagram for the various volcanic centers within the Sonoma
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DESCRIPTION OF <span class="search-highlight">VOLCANIC</span> CENTERS WITHIN THE EASTERN PART OF THE <span class="search-highlight">SONOMA</span> VOLCA...
Published: 01 June 2011
TABLE 2. DESCRIPTION OF VOLCANIC CENTERS WITHIN THE EASTERN PART OF THE SONOMA VOLCANIC FIELD
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DESCRIPTION OF <span class="search-highlight">VOLCANIC</span> CENTERS WITHIN THE EASTERN PART OF THE <span class="search-highlight">SONOMA</span> VOLCA...
Published: 01 June 2011
TABLE 2. DESCRIPTION OF VOLCANIC CENTERS WITHIN THE EASTERN PART OF THE SONOMA VOLCANIC FIELD
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DESCRIPTION OF <span class="search-highlight">VOLCANIC</span> CENTERS WITHIN THE EASTERN PART OF THE <span class="search-highlight">SONOMA</span> VOLCA...
Published: 01 June 2011
TABLE 2. DESCRIPTION OF VOLCANIC CENTERS WITHIN THE EASTERN PART OF THE SONOMA VOLCANIC FIELD
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DESCRIPTION OF <span class="search-highlight">VOLCANIC</span> CENTERS WITHIN THE EASTERN PART OF THE <span class="search-highlight">SONOMA</span> VOLCA...
Published: 01 June 2011
TABLE 2. DESCRIPTION OF VOLCANIC CENTERS WITHIN THE EASTERN PART OF THE SONOMA VOLCANIC FIELD
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DESCRIPTION OF <span class="search-highlight">VOLCANIC</span> CENTERS WITHIN THE EASTERN PART OF THE <span class="search-highlight">SONOMA</span> VOLCA...
Published: 01 June 2011
TABLE 2. DESCRIPTION OF VOLCANIC CENTERS WITHIN THE EASTERN PART OF THE SONOMA VOLCANIC FIELD
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Selected major-element and trace-element Harker plots for the various volca...
Published: 01 June 2011
Figure 9. Selected major-element and trace-element Harker plots for the various volcanic centers within the Sonoma volcanic field.
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Spider diagram showing comparison of patterns for sample Ja-1 from the Pina...
Published: 01 September 2014
Figure 14. Spider diagram showing comparison of patterns for sample Ja-1 from the Pinal terrane and sample 06DSN69 of Neogene age from the Napa-Sonoma volcanic field ( Sweetkind et al., 2011 ).
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Geochemistry of mafic rocks from selected <span class="search-highlight">volcanic</span> centers within the Sonom...
Published: 01 June 2011
Figure 18. Geochemistry of mafic rocks from selected volcanic centers within the Sonoma volcanic field and other volcanic rocks. (A) Total alkali-silica diagram ( Le Bas et al., 1986 ) for silica contents of less than 60%, including basalt (<52% SiO 2 ), basaltic andesite (52%–57% SiO 2
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Descriptive geochemistry of intracaldera tuff, outflow tuff, and distal fal...
Published: 01 June 2011
Figure 11. Descriptive geochemistry of intracaldera tuff, outflow tuff, and distal fall deposits for some major tuff units from the Sonoma volcanic field. (A) Variation in TiO 2 content with Zr concentration. (B) Ratio of incompatible elements showing variation in Rb/Sr with Zr/Ba. Samples
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Folded <span class="search-highlight">Sonoma</span> <span class="search-highlight">Volcanics</span> in the southwestern part of the <span class="search-highlight">volcanic</span> <span class="search-highlight">field</span>. Bla...
Published: 01 June 2011
Figure 6. Folded Sonoma Volcanics in the southwestern part of the volcanic field. Black lines mark a volcanic breccia that has moderate opposing dips. Red lines show the axis of the plunging fold.
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Kinematic reconstruction of northern California at 5.9 Ma. Continental crus...
Published: 01 June 2011
is after Atwater and Stock (1998) . The inferred location of the Ancestral Cascades arc through time is after Cousens et al. (2008) . Sutter Buttes age from Hausback and Nilsen (1999) . Volcanic centers of the Sonoma volcanic field lie between the Calaveras and the Rodgers Creek-Healdsburg faults; age