Vishnu Basement Rocks
The Vishnu Basement Rocks is the name recommended for all Early Proterozoic crystalline rocks (metamorphic and igneous) exposed in the Grand Canyon region. They form the crystalline basement rocks that underlie the Bass Limestone of the Unkar Group of the Grand Canyon Supergroup and the Tapeats Sandstone of the Tonto Group. These basement rocks have also been called either the Vishnu Complex or Vishnu Metamorphic Complex. These Early Proterozoic crystalline rocks consist of metamorphic rocks that are collectively known as the Granite Gorge Metamorphic Suite; sections of the Vishnu Basement Rocks contain Early Paleoproterozoic granite, granitic pegmatite, aplite, and granodiorite that have intruded these metamorphic rocks, and also, intrusive Early Paleoproterozoic ultramafic rocks.
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Vishnu Basement Rocks
The Vishnu Basement Rocks is the name recommended for all Early Proterozoic crystalline rocks (metamorphic and igneous) exposed in the Grand Canyon region. They form the crystalline basement rocks that underlie the Bass Limestone of the Unkar Group of the Grand Canyon Supergroup and the Tapeats Sandstone of the Tonto Group. These basement rocks have also been called either the Vishnu Complex or Vishnu Metamorphic Complex. These Early Proterozoic crystalline rocks consist of metamorphic rocks that are collectively known as the Granite Gorge Metamorphic Suite; sections of the Vishnu Basement Rocks contain Early Paleoproterozoic granite, granitic pegmatite, aplite, and granodiorite that have intruded these metamorphic rocks, and also, intrusive Early Paleoproterozoic ultramafic rocks.
has abstract
Als Vishnu Basement Rocks oder ...... tismus
* Anorogene Intrusiva
@de
The Vishnu Basement Rocks is t ...... after they were metamorphosed.
@en
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Wikipage page ID
40,439,460
Wikipage revision ID
733,934,846
age
Early Paleoproterozoic
country
lower contact
name
Vishnu Basement Rocks
otherlithology
granodiorite, tonalite, pegmatite, and ultramafic rocks
period
Paleoproterozoic
prilithology
schist and granite
subunits
Elves Chasm pluton, Granite Go ...... sive plutons, and dike swarms.
Thickness
underlies
Unkar Group and, as part of the Great Unconformity, the Tapeats Sandstone
year ts
18,831,894
subject
hypernym
comment
Als Vishnu Basement Rocks oder ...... Die Metamorphose erreichte gew
@de
The Vishnu Basement Rocks is t ...... oproterozoic ultramafic rocks.
@en
label
Vishnu Basement Rocks
@de
Vishnu Basement Rocks
@en
