Idaho Batholith
The Idaho Batholith is a granitic and granodioritic batholith of Cretaceous-Paleogene age that covers approximately 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. 
Q41177
granitic
Concept
Q215690
granodioritic
Concept
Q810808
batholith
Concept
Q44626
Cretaceous
TIME
Q55810
Paleogene
LOC
Q1221
Idaho
LOC
Q1212
Montana
LOC
Q810808
batholith
Concept
Q4884706
Belt Supergroup
LOC
Q47069
metamorphic rocks
Concept
Q601853
Salmon River Arch
LOC
Q5987308
Idaho Batholith ecoregion
UNK
Q338199
Late Cretaceous
TIME
Q76274
Eocene
TIME
Q46947
gabbro
Concept
Q41177
granite
Concept
Q19462461
Idaho Batholith
LOC
Q19462461
Idaho Batholith
LOC
Q19462461
Idaho Batholith
LOC
+55^^http://www.w3.org/2001/XMLSchema#decimal
55
NUMBER
+98^^http://www.w3.org/2001/XMLSchema#decimal
98
NUMBER
+43^^http://www.w3.org/2001/XMLSchema#decimal
43
NUMBER
made from material
instance of
located in the administrative territorial entity
instance of
made from material
shares border with