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- The Idaho Batholith is a granitic and granodioritic batholith of Cretaceous-Paleogene age that covers approximately 25,000 square kilometres (9,700 sq mi) of central Idaho and adjacent Montana. The batholith has two lobes that are separate from each other geographically and geologically. The Bitterroot lobe is the smaller lobe and the larger lobe is the Atlanta lobe. The Bitterroot lobe is in the north and is separated from the larger Atlanta lobe in the south by the Belt Supergroup metamorphic rocks that compose the Salmon River Arch. Much of the Atlanta and Bitterroot lobes are in the Idaho Batholith ecoregion. The overall intrusive event that created the Idaho batholith lasted for around 55 million years from Late Cretaceous to the Eocene (98 to 43 Ma) of magmatism and includes the younger Challis suite which is not considered to be part of the Idaho Batholith. The Challis suite intruded both the Atlanta and Bitterroot lobes of the Idaho Batholith as well as the surrounding areas to the east of the Atlanta lobe. The Challis suite is more petrologically diverse and contains a range of rocks from gabbro to granite. (en)
- Il batolite dell'Idaho è un batolite costituito da granito e granodiorite, risalente al Cretacico-Paleogene, che si estende su circa 25.000 km2 nella parte centrale degli Stati americani dell'Idaho e dell'adiacente Montana. (it)
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- 9148 (xsd:nonNegativeInteger)
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- Cretaceous to Paleogene (en)
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- Geologic map showing the Late Cretaceous Plutonic Rocks corresponding to the Kaniksu Batholith, and the Bitterroot and Atlanta lobes of the Idaho Batholith. Geologic map of the Salmon River Arch separating the Idaho Batholith lobes. (en)
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- Idaho Batholith.png (en)
- Bitterroot Lobe of the Idaho Batholith geologic map.png (en)
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- Quartz diorite and Tonalite (en)
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- Granite and Granodiorite (en)
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- Il batolite dell'Idaho è un batolite costituito da granito e granodiorite, risalente al Cretacico-Paleogene, che si estende su circa 25.000 km2 nella parte centrale degli Stati americani dell'Idaho e dell'adiacente Montana. (it)
- The Idaho Batholith is a granitic and granodioritic batholith of Cretaceous-Paleogene age that covers approximately 25,000 square kilometres (9,700 sq mi) of central Idaho and adjacent Montana. The batholith has two lobes that are separate from each other geographically and geologically. The Bitterroot lobe is the smaller lobe and the larger lobe is the Atlanta lobe. The Bitterroot lobe is in the north and is separated from the larger Atlanta lobe in the south by the Belt Supergroup metamorphic rocks that compose the Salmon River Arch. Much of the Atlanta and Bitterroot lobes are in the Idaho Batholith ecoregion. (en)
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- Idaho Batholith (en)
- Batolite dell'Idaho (it)
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