Map showing regional tectonic setting of area from Sacramento Valle...

Map showing regional tectonic setting of area from Sacramento Valle...

Detailed Description

Light-yellow background indicates volcanic rocks of late Tertiary to Holocene age. Orange dots indicate volcanic vent locations younger than about 7 Ma (older vents not shown). Thin violet lines show location of faults. Dashed red lines show approximate position of arc axis at the times indicated, and dashed black lines indicate the approximate southern terminus of arc volcanism at the times indicated. Thick blue lines indicate the estimated present-day depth to the subducted Gorda Plate. C, Caribou Volcanic Field; D, Dittmar Volcanic Center; Ln, Lassen Volcanic Center; Lt, Latour Volcanic Center; M, Maidu Volcanic Center; S, Snow Mountain Volcanic Center; Y, Yana Volcanic Center. Green background indicates 500 to 65 million year old metamorphic-plutonic basement of the Sierra Nevada and Klamath Provinces (small outliers of volcanic rocks not shown). Map taken from Figure 5 of Clynne and Muffler (2010) as updated from Guffanti and others (1990).

Details

Image Dimensions: 792 x 561

Source:


Clynne and Muffler, 2010