Geologic units containing melange

Mineral Resources On-Line Spatial Data

Mélange

A body of rock characterized by a lack of internal continuity of contacts or strata and by the inclusion of fragments and blocks of all sizes, both exotic and native, embedded in a fragmental matrix of finer-grained material.

This category is also used for Melange.

Subtopics:
(none)

California

Franciscan melange (Jurassic to Cretaceous): Melange of fragmented and sheared Franciscan complex rocks.
Paleozoic marine rocks, undivided, unit 5 (Northeastern Sierra Nevada) (Ordovician to Jurassic): Undivided Paleozoic metasedimentary rocks. Includes slate, sandstone, shale, chert, conglomerate, limestone, dolomite, marble, phyllite, schist, hornfels, and quartzite
Paleozoic marine rocks, undivided, unit 9 (Western Klamath Mountains) (Devonian to Jurassic): Undivided Paleozoic metasedimentary rocks. Includes slate, sandstone, shale, chert, conglomerate, limestone, dolomite, marble, phyllite, schist, hornfels, and quartzite

Maine

Cambrian Hurricane Mountain Formation (Cambrian): Cambrian Hurricane Mountain Formation
Ordovician - Cambrian Hurd Mountain formation (Ordovician - Cambrian): Ordovician - Cambrian Hurd Mountain formation
Ordovician - Cambrian Saint Daniel formation (Ordovician - Cambrian): Ordovician - Cambrian Saint Daniel formation

New York

Cambrian thru Middle Ordovician carbonate rock (Cambrian - Middle Ordovician): Cambrian thru Middle Ordovician (Barneveld) carbonate rock - occuring as slivers caught along thrusts of later allochthones, or carbonate blocks in Taconic Melange.
Cambrian thru Middle Ordovician carbonate rock (Cambrian - Middle Ordovician): Cambrian thru Middle Ordovician (Barneveld) carbonate rock - occuring as slivers caught along thrusts of later allochthones, or carbonate blocks in Taconic Melange. Also mapped as horses along normal faults.
Cambrian thru Middle Ordovician carbonate rock (Cambrian - Middle Ordovician): Cambrian thru Middle Ordovician (Barneveld) carbonate rock - occuring as slivers caught along thrusts of later allochthones, or carbonate blocks in Taconic Melange. Also mapped as horses along normal faults.
Taconic Melange (Middle Ordovician): Taconic Melange - chaotic mixture of Early Cambrian thru Middle Ordovician pebble to block-size clasts in a pelitic matrix of Middle Ordovician (Barneveld) age. Rims and floors earlier submarine gravity slides of Taconian Orogeny.
Taconic Melange (Middle Ordovician): Taconic Melange - chaotic mixture of Early Cambrian thru Middle Ordovician pebble to block-size angular to rounded clasts in a pelitic matrix of Middle Ordovician (Barneveld) age. Rims and floors earlier submarine gravity slides of Taconian Orogeny.
Taconic Melange (Middle Ordovician): Taconic Melange - chaotic mixture of Early Cambrian thru Middle Ordovician pebble to block-size clasts in a pelitic matrix of Middle Ordovician (Barneveld) age. Rims and floors earlier submarine gravity slides of Taconian Orogeny.

Virginia

Alligator Back Formation - Feldspathic metagraywacke (Proterozoic Z-Cambrian): Alligator Back Formation - Meta-argillite is feldspathic metagraywacke; graphitic mica schist, and quartzite.
Fork Mountain Formation (Proterozoic Z-Cambrian): Fork Mountain Formation - Quartzose mica schist, garnet-biotite gneiss, calc-silicate quartzite, and melange.
Indian Run Formation (Cambrian): Indian Run Formation - Metasedimentary melange
Metagraywacke, Quartzose Schist, and Melange (Proterozoic Z-Cambrian): Metagraywacke, Quartzose Schist, and Melange - Meta-argillite is metagraywacke; quartzose schist
Mine Run Complex - Melange Zone I (Proterozoic Z-Ordovician): Mine Run Complex - Melange Zone I
Mine Run Complex - Melange Zone II (Proterozoic Z-Ordovician): Mine Run Complex - Melange Zone II
Mine Run Complex - Melange Zone III (Proterozoic Z-Ordovician): Mine Run Complex - Melange Zone III
Polygenetic Melange (Proterozoic): Polygenetic melange
Sykesville Formation (Cambrian): Sykesville Formation - Metasedimentary melange
Yorkshire Formation (Cambrian): Yorkshire Formation - Polygenetic melange

Washington

Tertiary marine and nonmarine rocks (Eocene): Predominantly light-gray to olive-gray, fine to course-grained, thick-bedded sandstone with laminae to thick beds of medium dark gray siltstone, in northern Olympic Peninsula. Probably late Eocene to Miocene.