This outcrop is at the Rocky Mountain Front in Colorado - it is part of the local Precambrian basement. Observed lithologies include migmatite, gneiss, and schist. The rocks seen here are garnetiferous.
Stratigraphy: "Idaho Springs Formation", late Paleoproterozoic, ~1.7 Ga
Locality: Red Rocks Park, west of Denver, north-central Colorado, USA
Tags: Idaho Springs Formation Precambrian Proterozoic Paleoproterozoic Rocky Mountain Front Red Rocks Park Denver Colorado basement metamorphic metamorphics rock
This outcrop is at the Rocky Mountain Front in Colorado - it is part of the local Precambrian basement. Observed lithologies include migmatite, gneiss, and schist.
Stratigraphy: "Idaho Springs Formation", late Paleoproterozoic, ~1.7 Ga
Locality: Red Rocks Park, west of Denver, north-central Colorado, USA
Tags: Idaho Springs Formation Precambrian Proterozoic Paleoproterozoic Rocky Mountain Front Red Rocks Park Denver Colorado basement metamorphic metamorphics rock
This outcrop is at the Rocky Mountain Front in Colorado - it is part of the local Precambrian basement. Observed lithologies include migmatite, gneiss, and schist.
Stratigraphy: "Idaho Springs Formation", late Paleoproterozoic, ~1.7 Ga
Locality: Red Rocks Park, west of Denver, north-central Colorado, USA
Tags: Idaho Springs Formation Precambrian Proterozoic Paleoproterozoic Rocky Mountain Front Red Rocks Park Denver Colorado basement metamorphic metamorphics rock
This outcrop is at the Rocky Mountain Front in Colorado - it is part of the local Precambrian basement. Observed lithologies include migmatite, gneiss, and schist.
Stratigraphy: "Idaho Springs Formation", late Paleoproterozoic, ~1.7 Ga
Locality: Red Rocks Park, west of Denver, north-central Colorado, USA
Tags: Idaho Springs Formation Precambrian Proterozoic Paleoproterozoic Rocky Mountain Front Red Rocks Park Denver Colorado basement metamorphic metamorphics rock
Migmatite in the Precambrian of Colorado, USA.
Migmatites are very high grade metamorphic rocks that form by partial melting of gneisses. The felsic minerals have melted, cooled, and recrystallized - they form the light-colored, crystalline-textured bands in the rock. The mafic minerals have higher melting temperatures and still retain their metamorphic foliated character.
The outcrop seen here is an Paleoproterozoic-aged migmatite at the Rocky Mountain Front in Colorado. This is part of the local Precambrian basement. Upper Paleozoic redbeds are nonconformably overlying the basement in the area.
Stratigraphy: "Idaho Springs Formation", late Paleoproterozoic, ~1.7 Ga
Locality: Red Rocks Park, west of Denver, north-central Colorado, USA
Tags: migmatite Idaho Springs Formation Precambrian Proterozoic Paleoproterozoic Rocky Mountain Front Red Rocks Park Denver Colorado