Kaweah-Sequoia intrusive suite
Kaweah-Sequoia intrusive suite
Cretaceous, ~86-135 Ma
Occurs in eastern part of central Sierra Nevada. Chiefly granodiorite, granite, quartz diorite. This unit has zircon U-Pb ages ranging from ~86-135 Ma, with the great majority of the ages ~90-106 Ma (Saleeby and Sharp, 1980; Chen and Moore, 1982; Lackey and others, 2008; Holland and others, 2013; Sisson and Moore, 2013). Evernden and Kistler (1970) report biotite K-Ar ages of ~83-93 Ma and hornblende K-Ar ages of ~86-93 Ma, along with plagioclase K-Ar age of ~88 Ma and potassium feldspar K-Ar age of ~87 Ma. Major plutons: granite of Big Meadows, granite of Case Mountain, granite of Big Meadow, granite of Coyote Pass, granite of Dennison Peak, granite of Eagle Scout Peak, granite of Little Kern Lake, granite of Maggie Mountain, granite of Mount Kaweah, granite of Redrock Meadows, granite of White Mountain, granodiorite of Giant Forest, granodiorite of Burnt Camp Creek, granodiorite of Lookout Peak, granodiorite of Milk Ranch Peak, granodiorite of North Dome, granodiorite of Pecks Canyon, granodiorite of Shepherds Saddle, granodiorite of Windy Ridge, Mitchell Peak Granodiorite, and quartz diorite of Empire Mountain. Unit includes Sequoia Intrusive Suite and Mitchell Intrusive Suite (see Moore and Sisson, 1987).