The Resource Lithium and lithium isotopes in tourmaline as indicators of crystallization processes : a study of San Diego County pegmatites, California, by Jennifer Maloney, (electronic resource)

Lithium and lithium isotopes in tourmaline as indicators of crystallization processes : a study of San Diego County pegmatites, California, by Jennifer Maloney, (electronic resource)

Label
Lithium and lithium isotopes in tourmaline as indicators of crystallization processes : a study of San Diego County pegmatites, California
Title
Lithium and lithium isotopes in tourmaline as indicators of crystallization processes
Title remainder
a study of San Diego County pegmatites, California
Statement of responsibility
by Jennifer Maloney
Creator
Contributor
Thesis advisor
Subject
Genre
Language
eng
Summary
The pegmatites of San Diego County, California, are part of the Mesozoic Peninsular Ranges Batholith of southwestern California and Baja California, Mexico. Three LCT- pegmatites were studied. The pegmatites have texturally, mineralogically, and chemically distinct footwalls, pegmatitic zones, and central pocket zones. Tourmaline shows enrichment in incompatible Li from the wall zones towards the pocket indicating that the dikes crystallized inward from the wall rock contact, with the line rock crystallizing until the melt reached fluid saturation, at which point, fluid and melt separated to form the pegmatite and the pockets, respectively. Li was strongly partitioned in favor of the fluid. The isotopic composition of tourmaline is reflective of the medium from which it crystallized and is controlled by the coordination of Li in that medium. 7Li prefers sites with smaller coordination numbers and stronger bonds while 6Li fractionates into weaker sites with higher coordination numbers. Tourmaline in the pegmatitic zone is isotopically heavier than that in the pocket zone, suggesting that 7Li was enriched in the melt and that the bonds of Li in the melt are stronger than the hydrated bonds of Li in the fluid. The [sigma] 7Li values in tourmaline crystallized in the pocket are similar to those in the line rock tourmaline, which is consistent with the accumulation of the bulk of the initial Li that was in the original melt in the pocket fluid, as this would result in little change in the isotopic composition of the Li
Cataloging source
MUU
http://library.link/vocab/creatorName
Maloney, Jennifer
Degree
M.S.
Dissertation year
2007.
Granting institution
University of Missouri-Columbia
Illustrations
  • illustrations
  • maps
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
  • Pegmatites
  • Lithium
  • Cesium
  • Tantalum
  • Tourmaline
Target audience
specialized
Label
Lithium and lithium isotopes in tourmaline as indicators of crystallization processes : a study of San Diego County pegmatites, California, by Jennifer Maloney, (electronic resource)
Instantiates
Publication
Note
  • The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file
  • Title from title screen of research.pdf file (viewed on October 30, 2007)
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Color
mixed
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
179916030
Dimensions
unknown
Form of item
electronic
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Specific material designation
remote
System control number
(OCoLC)179916030
System details
Mode of access: World Wide Web
Label
Lithium and lithium isotopes in tourmaline as indicators of crystallization processes : a study of San Diego County pegmatites, California, by Jennifer Maloney, (electronic resource)
Publication
Note
  • The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file
  • Title from title screen of research.pdf file (viewed on October 30, 2007)
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Color
mixed
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
179916030
Dimensions
unknown
Form of item
electronic
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Specific material designation
remote
System control number
(OCoLC)179916030
System details
Mode of access: World Wide Web

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