The Resource Mechanisms for the formation of spiraled inclusion trails in garnet porphyroblasts from the Precambrian core of the Laramie Mountains, southeastern Wyoming, by Mark A. Sutcliffe

Mechanisms for the formation of spiraled inclusion trails in garnet porphyroblasts from the Precambrian core of the Laramie Mountains, southeastern Wyoming, by Mark A. Sutcliffe

Label
Mechanisms for the formation of spiraled inclusion trails in garnet porphyroblasts from the Precambrian core of the Laramie Mountains, southeastern Wyoming
Title
Mechanisms for the formation of spiraled inclusion trails in garnet porphyroblasts from the Precambrian core of the Laramie Mountains, southeastern Wyoming
Statement of responsibility
by Mark A. Sutcliffe
Creator
Contributor
Author
Thesis advisor
Subject
Genre
Language
eng
Summary
Relationships between deformation fabrics and porphyroblasts have been used to evaluate the metamorphic and deformational histories of mountain belts. However, some porphyroblast-fabric relationships, such as those of spiral inclusion trails in garnets, remain controversial. Two end-member models for their formation include: 1) a rotational model that invokes rotation of progressively growing garnet porphyroblasts, and 2) a non-rotational model that involves multiple periods of garnet growth, resorption, and successive overprinting of near-orthogonal foliations. However, field, petrographic, and microanalytical techniques used to evaluate the origin of spiral inclusion trails from the Laramie Mountains appear consistent with overgrowth of an existing crenulation foliation and only modest rotation. This study presents evidence to explain 3̃60 degrees of apparent rotation within our garnets via as little as 58 degrees of real rotation. Varying degrees of apparent rotation from our samples can be explained through the overgrowth of an asymmetric crenulation foliation during progressive shortening and continued foliation development, and foliation wrapping that occurs around the garnets during their growth. Additionally, the real garnet rotation likely results from partitioned shear strain around garnet porphyroblasts
Cataloging source
MUU
http://library.link/vocab/creatorName
Sutcliffe, Mark A
Degree
M.S.
Dissertation note
Thesis
Dissertation year
2013.
Government publication
government publication of a state province territory dependency etc
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
Bauer, Robert L.
http://library.link/vocab/subjectName
  • Metamorphic rocks
  • Metamorphism (Geology)
  • Rock deformation
  • Microstructure
Label
Mechanisms for the formation of spiraled inclusion trails in garnet porphyroblasts from the Precambrian core of the Laramie Mountains, southeastern Wyoming, by Mark A. Sutcliffe
Instantiates
Publication
Note
  • "A Thesis presented to the Faculty of the Graduate School at the University of Missouri-Columbia In Partial Fulfillment of the Requirements for the Degree Master of Science."
  • Thesis supervisor: Dr. Robert L. Bauer
Bibliography note
Includes bibliographical references (pages 130-135)
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
889428292
Extent
1 online resource (x, 135 pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia.
Media type code
c
Other physical details
illustrations (some color), maps (chiefly color)
Specific material designation
remote
System control number
(OCoLC)889428292
Label
Mechanisms for the formation of spiraled inclusion trails in garnet porphyroblasts from the Precambrian core of the Laramie Mountains, southeastern Wyoming, by Mark A. Sutcliffe
Publication
Note
  • "A Thesis presented to the Faculty of the Graduate School at the University of Missouri-Columbia In Partial Fulfillment of the Requirements for the Degree Master of Science."
  • Thesis supervisor: Dr. Robert L. Bauer
Bibliography note
Includes bibliographical references (pages 130-135)
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
889428292
Extent
1 online resource (x, 135 pages)
Form of item
online
Media category
computer
Media MARC source
rdamedia.
Media type code
c
Other physical details
illustrations (some color), maps (chiefly color)
Specific material designation
remote
System control number
(OCoLC)889428292

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