Transverse Ranges; Paleozoic

Sierra Nevada; Mesozoic

Sierra Nevada; Paleozoic

Transverse Ranges; Mesozoic

Joshua Tree Augen Gneiss, Metasedimentary Suite of Placer Canyon, Aguen Gneiss of Monument Mountain, Metasedimentary Suite of Pinkham Wash

Joshua Tree Augen Gneiss, 29 Palms Megacrystic Quartz Monzonite, Aguen Gneiss of Monument Mountain, Queen Mountain

Queen Mountain, 29 Palms Megacrystic Quartz Monzonite, Virginia Dale Quartz Monzonite, White Tank

The Oasis Monzogranite, Amphibolite Othrogneiss, Leucocratic Granite Orthogneiss, Joshua Tree Augen Gneiss, Augen Gneiss of Monument Mountain

Queen Mountain Formation

Milky Quartz Dikes

Malapai Hill Basalt

McCoy Mountains Formation

outcrops occupy Chuckwalla, Eagle (central) and Pinto (South-West) Mountains

Aged 1.65-1.71 BY

composed of granitic augen gneiss

overlays the Metasedimentary Suite of Placer Canyon subunit

has the oldest rocks in California

is in the Sierra Nevada

composed of Dolomite and Quartzite

unconformably overlays the Joshua Tree Augen Gneiss subunit

composed of a dark colored porphyritic granodiorite-monxogranite

located in the Hexie Mountains

Age: 1.73-1.78 BY

Age: 1.65-1.68 BY

located in Chuckwalla, Eagle, Hecire and Pinto Mountains

hold the oldest rocks in CA

is known for its fossilized ham that stained the rocks pink

age: 1.73 - 1.78 BY

1.65 - 1.71 BY

1.65 - 1.68 BY

1.73 - 1.78 BY

235 MY

1.73 - 1.78 BY

1.65 - 1.71 BY

1.65 - 1.68 BY

235 MY

1.65 - 1.71 BY

1.73 - 1.78 BY

1.65 - 1.68 BY

235 MY