Science Explorer

Exploring: Metamorphic Rocks

Geologic map of the igneous and metamorphic rocks of Colorado showing location of uranium deposits

Modified 2012-02-10
https://pubs.er.usgs.gov/publication/i309 (HTML Document 17.07 KB)

Geologic map of the igneous and metamorphic rocks of Colorado showing location of uranium deposits IMAP 309 Title: Geologic map of the igneous and ... metamorphic rocks of Colorado showing location of uranium deposits Series title: Scale: 500000 ...

Thermobarometric constraints on mid-Cretaceous to late Cretaceous metamorphic events in the western metamorphic belt of the Coast Mountains complex near Petersburg, southeastern Alaska

Modified 2012-02-02
https://pubs.er.usgs.gov/publication/pp1709C (HTML Document 21.15 KB)

metamorphic event, as proposed by some workers. Juxtaposition of the two belts of rocks probably occurred along the Coast shear zone during uplift and ... Thermobarometric constraints on mid-Cretaceous to late Cretaceous metamorphic events in the western metamorphic belt of the Coast Mountains complex ... near Petersburg, southeastern Alaska Professional Paper 1709-C Abstract The western metamorphic belt is part of the Coast Mountains Complex of ... (Intermontane superterrane). The western metamorphic belt, which ranges from a few kilometers to several tens of kilometers in width, records a complex sequence ...

Cordierite Hornfels

https://www.usgs.gov/media/images/cordierite-hornfels (HTML Document 43.29 KB)

Hornfels rocks are metamorphic rocks. They usually start out as sedimentary rocks like sandstone or shale, but then volcanic material pushes up from ... below and bakes the sedimentary rock into a metamorphic one. Hornfels are known for being exceptionally tough and durable. This one is from Chantilly, VA.

Geologic map of the igneous and metamorphic rocks of Montana showing location of uranium deposits

Modified 2012-02-10
https://pubs.er.usgs.gov/publication/i311 (HTML Document 17.08 KB)

Geologic map of the igneous and metamorphic rocks of Montana showing location of uranium deposits IMAP 311 Title: Geologic map of the igneous and ... metamorphic rocks of Montana showing location of uranium deposits Series title: 1 map on two sheets :col. ;102 x 192 cm. Scale: 500000 ...

Relations between specific gravity and chemical composition for a suite of igneous and metamorphic rocks

Modified 2012-02-02
https://pubs.er.usgs.gov/publication/ofr76809 (HTML Document 14.55 KB)

Relations between specific gravity and chemical composition for a suite of igneous and metamorphic rocks Open-File Report 76-809 The Publications ... and chemical composition for a suite of igneous and metamorphic rocks Series title: Open-File Report Series number: ...

Map of Arizona showing oil, gas, and exploratory wells, pipelines, and areas of igneous and metamorphic rocks

Modified 2012-02-02
https://pubs.er.usgs.gov/publication/om201 (HTML Document 14.93 KB)

Map of Arizona showing oil, gas, and exploratory wells, pipelines, and areas of igneous and metamorphic rocks Oil and Gas Investigation Map 201 By ... : Title: Map of Arizona showing oil, gas, and exploratory wells, pipelines, and areas of igneous and metamorphic rocks Series title: Series number: 1959 ...

Geologic map of the igneous and metamorphic rocks of Wyoming showing location of uranium deposits

Modified 2012-02-10
https://pubs.er.usgs.gov/publication/i310 (HTML Document 17.09 KB)

Geologic map of the igneous and metamorphic rocks of Wyoming showing location of uranium deposits IMAP 310 Title: Geologic map of the igneous and ... metamorphic rocks of Wyoming showing location of uranium deposits Series title: 1960 Language: ENGLISH Description: 1 map :col. ;93 x 119 cm. on sheet 106 x 127 cm. Scale: 500000 ...

Generalized map showing Precambrian rocks and metamorphic facies, keyed to aluminosilicate minerals in meta-shales with excess alumina, northern Park Range, Colorado

Modified 2012-02-02
https://pubs.er.usgs.gov/publication/ofr80787 (HTML Document 15.08 KB)

Generalized map showing Precambrian rocks and metamorphic facies, keyed to aluminosilicate minerals in meta-shales with excess alumina, northern Park ... Range, Colorado Open-File Report 80-787 Download citation as: RIS Generalized map showing Precambrian rocks and metamorphic facies, keyed to ...

Preliminary report on sedimentary and metamorphic rocks in part of the Romanzof Mountains, Brooks Range, northeastern Alaska

Modified 2012-02-02
https://pubs.er.usgs.gov/publication/ofr59106 (HTML Document 15.33 KB)

Preliminary report on sedimentary and metamorphic rocks in part of the Romanzof Mountains, Brooks Range, northeastern Alaska Open-File Report 59-106 ... Title: Preliminary report on sedimentary and metamorphic rocks in part of the Romanzof Mountains, Brooks Range, northeastern Alaska Series title: Open-File Report Series number: ...

Christopher Holm-Denoma

https://www.usgs.gov/node/719028 (HTML Document 44.06 KB)

Email: cholm-denoma@usgs.gov Phone: 303-236-5454 Fax: 303-236-3200 Lakewood, CO 80225 Biography  

Map showing distribution of metamorphic rocks in the Survey Pass Quadrangle, Brooks Range, Alaska

Modified 2012-02-10
https://pubs.er.usgs.gov/publication/mf1176C (HTML Document 17.75 KB)

Map showing distribution of metamorphic rocks in the Survey Pass Quadrangle, Brooks Range, Alaska Miscellaneous Field Studies Map 1176-C By: Download ... citation as: RIS Title: Map showing distribution of metamorphic rocks in the Survey Pass Quadrangle, Brooks Range, Alaska Series title: 1981 Language ...

Development of inverted metamorphic isograds in the western metamorphic belt, Juneau, Alaska

Modified 2012-03-12
https://pubs.er.usgs.gov/publication/70016798 (HTML Document 17.19 KB)

Development of inverted metamorphic isograds in the western metamorphic belt, Juneau, Alaska Journal of Metamorphic Geology The Publications ... Warehouse does not have links to digital versions of this publication at this time Download citation as: RIS Abstract An inverted metamorphic gradient is ... preserved in the western metamorphic belt near Juneau, Alaska. Detailed mapping of pelitic single-mineral isograds, systematic changes in mineral ... assemblages, and silicate geothermometry indicate that thermal peak metamorphic conditions increase structurally upward over a distance of about 8 km ...

Distribution of rutile in metamorphic rocks and implications for placer deposits

Modified 2012-03-12
https://pubs.er.usgs.gov/publication/70012590 (HTML Document 18.78 KB)

Distribution of rutile in metamorphic rocks and implications for placer deposits Mineralium Deposita Abstract Pelitic units in the eastern Great ... Springer-Verlag. Additional publication details Title: Distribution of rutile in metamorphic rocks and implications for placer deposits Series title: Mineralium Deposita ... Smoky Mountains of the North Carolina Blue Ridge contain rutile grains only in kyanite and higher zones. Adjacent non-pelitic rocks do not contain rutile ... at kyanite grade but commonly contain sphene. Detrital rutile breaks down at metamorphic grades lower than those at which metamorphic rutile forms ...

Geology of North Cascades National Park - Domains of the North Cascade: Rocks of the Metamorphic Core Domain

Modified 2016-12-13
https://geomaps.wr.usgs.gov/parks/noca/tcordom.html (HTML Document 7.55 KB)

Domains of the North Cascade: Rocks of the Metamorphic Core Domain Looking south from the North Klawatti Glacier. The rock in the foreground and at a ... rocks. The geologist, seeking the ultimate origin and history of these metamorphic rocks, gets to savor some wonderful scenery. And ... Rocks and Terranes . The four metamorphic terranes, can be described in terms of their major ... that were once stewed deep in the crust and are now exposed in the Metamorphic Core Domain is challenging but not without rewards ...

Christopher Holm-Denoma

https://www.usgs.gov/staff-profiles/christopher-holm-denoma (HTML Document 44.06 KB)

Email: cholm-denoma@usgs.gov Phone: 303-236-5454 Fax: 303-236-3200 Lakewood, CO 80225 Biography  

Prehnite in plutonic and metamorphic rocks of the northern Santa Lucia Range, Salinian block, California

Modified 2015-08-25
https://pubs.er.usgs.gov/publication/70156638 (HTML Document 21.52 KB)

Prehnite in plutonic and metamorphic rocks of the northern Santa Lucia Range, Salinian block, California Journal of Research of the U.S. Geological ... plutonic and metamorphic rocks along the west edge of the Salinian block in the northern Santa Lucia Range. The prehnite appears to be concentrated near ... of minerals in the country rocks (either plutonic or metamorphic). I suggest that solutions, derived from a "substratum" (possibly Franciscan ... metamorphic rocks of the northern Santa Lucia Range, Salinian block, California Series title: Volume: 4 Issue: 5 N Part or all of this report is presented ...

Metamorphic and igneous rocks along the northwest border zone of the Idaho Batholith

Modified 2012-02-02
https://pubs.er.usgs.gov/publication/pp344 (HTML Document 15.27 KB)

Metamorphic and igneous rocks along the northwest border zone of the Idaho Batholith Professional Paper 344 Title: Metamorphic and igneous rocks ...

The provenance of rutile.

Modified 2012-03-12
https://pubs.er.usgs.gov/publication/70012393 (HTML Document 15.43 KB)

detrital rutile is derived from high-grade metamorphic rocks. Contrary to a conventional assumption, independent rutile grains are particularly rare in ... igneous rocks except alkalic rocks. The use of rutile in the zircon-tourmaline-rutile index of mineralogic maturity is only partially valid, owing to its restricted provenance. -Author Additional publication details ...

Igneous and metamorphic rocks of the Serpentine Hot Springs area, Seward Peninsula, Alaska

Modified 2012-02-02
https://pubs.er.usgs.gov/publication/pp1079 (HTML Document 15.65 KB)

Igneous and metamorphic rocks of the Serpentine Hot Springs area, Seward Peninsula, Alaska Professional Paper 1079 Title: Igneous and metamorphic ... rocks of the Serpentine Hot Springs area, Seward Peninsula, Alaska Series title: Professional Paper Series number: 27 p.; 1 plate in pocket Part or all ...

The metamorphic and plutonic rocks of the southernmost Sierra Nevada, California, and their tectonic framework

Modified 2012-02-02
https://pubs.er.usgs.gov/publication/pp1381 (HTML Document 16.82 KB)

The metamorphic and plutonic rocks of the southernmost Sierra Nevada, California, and their tectonic framework Professional Paper 1381 The ... metamorphic and plutonic rocks of the southernmost Sierra Nevada, California, and their tectonic framework Series title: Professional Paper Series number: 159 p ...