The Resource Unraveling the fluid-present metamorphism of schists from garnet compositions in the Black Hills, South Dakota, by Yanying Chen
Unraveling the fluid-present metamorphism of schists from garnet compositions in the Black Hills, South Dakota, by Yanying Chen
Resource Information
The item Unraveling the fluid-present metamorphism of schists from garnet compositions in the Black Hills, South Dakota, by Yanying Chen represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in University of Missouri-St. Louis Libraries.This item is available to borrow from all library branches.
Resource Information
The item Unraveling the fluid-present metamorphism of schists from garnet compositions in the Black Hills, South Dakota, by Yanying Chen represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in University of Missouri-St. Louis Libraries.
This item is available to borrow from all library branches.
- Summary
- Garnets in Proterozoic metapelites in the Black Hills, South Dakota, were analyzed to determine their pressure, temperature and hydrothermal conditions of growth and to elucidate pressure-temperature-time paths of their host rocks. The metapelites are the product of garnet-grade regional metamorphism due to the collision of Wyoming and Superior cratons and subsequent contact metamorphism by intrusion of the Harney Peak Granite. X-ray element maps and compositional profiles across garnets were determined using electron-probe microanalysis. Mineral assemblage diagrams (pseudosections) with garnet composition contours were constructed using the THERIAK-DOMINO software and then the P-T-t paths can be derived. Results show that internal chemical diffusion would have been too slow for modification of garnet chemistry after crystallization. Thus, the chemical zoning must reflect conditions during garnet growth. In the garnet and staurolite zones, garnets initially grew in a low a(H2O) environment and the temperature of initial growth may have overstepped the equilibrium temperature. In the sillimanite zone, low-grade garnet partially or fully recrystallized in a higher a(H2O) environment and compositions suggest equilibrium growth commensurate with sillimanite-grade temperatures. Garnet compositions suggest that the early regional metamorphism occurred at relatively low pressures (3̃ kbar), whereas the region in close proximity to the Harney Peak Granite had a high-P history (>6 kbar) that is supported by an occurrence of kyanite in one sillimanite-zone sample
- Language
- eng
- Extent
- 1 online resource (ix, 79 pages)
- Note
- Advisor: Peter Igor Nabelek
- Label
- Unraveling the fluid-present metamorphism of schists from garnet compositions in the Black Hills, South Dakota
- Title
- Unraveling the fluid-present metamorphism of schists from garnet compositions in the Black Hills, South Dakota
- Statement of responsibility
- by Yanying Chen
- Language
- eng
- Summary
- Garnets in Proterozoic metapelites in the Black Hills, South Dakota, were analyzed to determine their pressure, temperature and hydrothermal conditions of growth and to elucidate pressure-temperature-time paths of their host rocks. The metapelites are the product of garnet-grade regional metamorphism due to the collision of Wyoming and Superior cratons and subsequent contact metamorphism by intrusion of the Harney Peak Granite. X-ray element maps and compositional profiles across garnets were determined using electron-probe microanalysis. Mineral assemblage diagrams (pseudosections) with garnet composition contours were constructed using the THERIAK-DOMINO software and then the P-T-t paths can be derived. Results show that internal chemical diffusion would have been too slow for modification of garnet chemistry after crystallization. Thus, the chemical zoning must reflect conditions during garnet growth. In the garnet and staurolite zones, garnets initially grew in a low a(H2O) environment and the temperature of initial growth may have overstepped the equilibrium temperature. In the sillimanite zone, low-grade garnet partially or fully recrystallized in a higher a(H2O) environment and compositions suggest equilibrium growth commensurate with sillimanite-grade temperatures. Garnet compositions suggest that the early regional metamorphism occurred at relatively low pressures (3̃ kbar), whereas the region in close proximity to the Harney Peak Granite had a high-P history (>6 kbar) that is supported by an occurrence of kyanite in one sillimanite-zone sample
- Cataloging source
- MUU
- http://library.link/vocab/creatorName
- Chen, Yanying
- Degree
- M.S.
- Dissertation note
- Thesis
- Dissertation year
- 2012.
- Government publication
- government publication of a state province territory dependency etc
- Granting institution
- University of Missouri--Columbia,
- Illustrations
- illustrations
- Index
- no index present
- Literary form
- non fiction
- Nature of contents
-
- dictionaries
- bibliography
- theses
- http://library.link/vocab/relatedWorkOrContributorName
- Nabelek, Peter Igor
- http://library.link/vocab/subjectName
-
- United States
- Garnet
- Proterozoic Geologic Period
- Cratons
- Metamorphism (Geology)
- Electron probe microanalysis
- Crystallization
- Label
- Unraveling the fluid-present metamorphism of schists from garnet compositions in the Black Hills, South Dakota, by Yanying Chen
- Note
- Advisor: Peter Igor Nabelek
- Carrier category
- online resource
- Carrier category code
-
- cr
- Carrier MARC source
- rdacarrier
- Content category
- text
- Content type code
-
- txt
- Content type MARC source
- rdacontent
- Control code
- 876614983
- Extent
- 1 online resource (ix, 79 pages)
- Form of item
- online
- Media category
- computer
- Media MARC source
- rdamedia
- Media type code
-
- c
- Other physical details
- illustrations (some color)
- Specific material designation
- remote
- System control number
- (OCoLC)876614983
- Label
- Unraveling the fluid-present metamorphism of schists from garnet compositions in the Black Hills, South Dakota, by Yanying Chen
- Note
- Advisor: Peter Igor Nabelek
- Carrier category
- online resource
- Carrier category code
-
- cr
- Carrier MARC source
- rdacarrier
- Content category
- text
- Content type code
-
- txt
- Content type MARC source
- rdacontent
- Control code
- 876614983
- Extent
- 1 online resource (ix, 79 pages)
- Form of item
- online
- Media category
- computer
- Media MARC source
- rdamedia
- Media type code
-
- c
- Other physical details
- illustrations (some color)
- Specific material designation
- remote
- System control number
- (OCoLC)876614983
Subject
- Crystallization
- Dissertations, Academic -- University of Missouri--Columbia -- Geological sciences
- Electron probe microanalysis
- Electronic books
- Electronic bookss
- Electronic dissertations
- Garnet
- Metamorphism (Geology)
- Proterozoic Geologic Period
- United States -- Black Hills
- Academic theses
- Cratons
Genre
Library Locations
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St. Louis Mercantile LibraryBorrow it1 University Blvd, St. Louis, MO, 63121, US38.710138 -90.311107
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University ArchivesBorrow it703 Lewis Hall, Columbia, MO, 65211, US
-
University of Missouri-St. Louis Libraries DepositoryBorrow it2908 Lemone Blvd, Columbia, MO, 65201, US38.919360 -92.291620
-
University of Missouri-St. Louis Libraries DepositoryBorrow it2908 Lemone Blvd, Columbia, MO, 65201, US38.919360 -92.291620
-
Ward E Barnes Education LibraryBorrow it8001 Natural Bridge Rd, St. Louis, MO, 63121, US38.707079 -90.311355
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<div class="citation" vocab="http://schema.org/"><i class="fa fa-external-link-square fa-fw"></i> Data from <span resource="http://link.umsl.edu/portal/Unraveling-the-fluid-present-metamorphism-of/JeGPEpkoCCM/" typeof="Book http://bibfra.me/vocab/lite/Item"><span property="name http://bibfra.me/vocab/lite/label"><a href="http://link.umsl.edu/portal/Unraveling-the-fluid-present-metamorphism-of/JeGPEpkoCCM/">Unraveling the fluid-present metamorphism of schists from garnet compositions in the Black Hills, South Dakota, by Yanying Chen</a></span> - <span property="potentialAction" typeOf="OrganizeAction"><span property="agent" typeof="LibrarySystem http://library.link/vocab/LibrarySystem" resource="http://link.umsl.edu/"><span property="name http://bibfra.me/vocab/lite/label"><a property="url" href="http://link.umsl.edu/">University of Missouri-St. Louis Libraries</a></span></span></span></span></div>
