Close-up of Green Creek Complex rock (an assemblage of metamorphic rocks consisting of granite, granitic gneiss [metamorphosed granite], and schist) d

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Close-up of Green Creek Complex rock (an assemblage of metamorphic rocks consisting of granite, granitic gneiss [metamorphosed granite], and schist) determined to be as old as billion years (Archean) making it some of the oldest rock found on the continent west of the Mississippi River; City of Rocks National Reserve, Idaho,

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Size: 5360px × 3560px
Location: City of Rocks National Reserve, Idaho
Photo credit: © William Mullins / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: ancient, archaen, archean, city, complex, creek, crystals, eon, feldspar, geology, granite, green, idaho, metamorphic, national, porphyritic, potassium, potasssium, quartz, reserve, rock, rocks, silent, texture