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mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Models of calcite vein formation
  name:
    name part: Lee, Young-Joon
    name part: 1963-
    role:
      role term: creator
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: xx
    date issued: 1997
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xiv, 169 leaves : illustrations, maps ; 28 cm.
  abstract: Calcite is commonly found as a vein-filling mineral in rocks.
  abstract: However, the factors controlling its deposition are complex
  abstract: and not well understood in quantitative terms. In order to
  abstract: advance our understanding of the processes involved, a model
  abstract: for calcite precipitation simulating calcium carbonate mass
  abstract: transport in open spaces has been developed. The model was
  abstract: tested by a new experimental technique that uses a follow-
  abstract: through reactor simulating a vein opening. Agreement was
  abstract: observed between model predictions and experimental
  abstract: observations for the deposition of calcite in synthetic
  abstract: veins. The influences of solution saturation state with
  abstract: respect to calcite and flow velocity on both amount and
  abstract: distribution of calcite precipitate were well predicted by
  abstract: the model. The model predicts that the solution slightly
  abstract: supersaturated with respect to calcite can produce a uniform
  abstract: deposition of calcite within a vein. This condition demands
  abstract: what may be unreasonably large volumes of solution flow and
  abstract: long periods of time to achieve vein fillings. To test some
  abstract: of these results, I studied a set of veins in the Cretaceous
  abstract: Austin Chalk. Multi-layered crack-seal calcite veins in
  abstract: the Austin Chalk Formation near San Antonio, Texas are
  abstract: composed of alternating millimeter- to submillimeter-thick
  abstract: calcite veinlets and host lithons, occasionally crosscut by
  abstract: coarse, equant-grained secondary calcite veins. The grain
  abstract: fabrics in calcite veinlets are mostly equant or irregular,
  abstract: suggesting face-controlled grain growth in a fluid-filled
  abstract: cavity. Linear changes in 8180 (e.g. -2.6 to -5.6%o, PDB) of
  abstract: the calcite veinlets along the length of veins suggest that
  abstract: the individual calcite veinlets were sequentially developed.
  abstract: A systematic 8 18 0 decrease in the vein opening direction
  abstract: primarily resulted from a continuous increase in temperature
  abstract: of the ascending fluids delivered to the Austin Chalk.
  abstract: Relatively constant 8 13C (approximately +1.4 ︢0.4%o, PDB)
  abstract: for the multi-layered veins and most secondary veins
  abstract: indicates that the composition of fluids from which the
  abstract: calcite veins precipitated was initially buffered by the bulk
  abstract: chalk. The relatively thick veinlets can be developed by
  abstract: progressive opening simultaneous with calcite precipitation
  abstract: under a low fluid pressure. Multi-layered crack-seal veins
  abstract: presumably occur in sequentially developed so called
  abstract: 66releasing bend" geometries related to episodic fault slip.
  note: by Young-Joon Lee.
  note: Vita.
  note: "Major Subject: Geology".
  note: Issued also on microfiche from University Microfilms Inc.
  note: Includes bibliographical references: pages 144-157.
  note: Ph. D. Texas A&M University 1997.
  subject:
    topic: Major geology
  identifier: 97-29224 UMI
  identifier: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  record info:
    record content source: TXA
    record creation date: 971119
    record change date: 20190325093444.0
    record identifier: in00001400108