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Hydrothermal alteration, mass transfer and magnetite mineralization in dextral shear zones, western Hudson Highlands, NY
Descriptive
TitleInfo
Title
Hydrothermal alteration, mass transfer and magnetite mineralization in dextral shear zones, western Hudson Highlands, NY
Name
(type = personal)
NamePart
(type = family)
Kalczynski
NamePart
(type = given)
Michael J.
NamePart
(type = date)
1981-
DisplayForm
Michael Kalczynski
Role
RoleTerm
(authority = RULIB)
author
Name
(type = personal)
NamePart
(type = family)
Gates
NamePart
(type = given)
Alexander E
DisplayForm
Alexander E Gates
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
chair
Name
(type = personal)
NamePart
(type = family)
Gorring
NamePart
(type = given)
Matthew L
DisplayForm
Matthew L Gorring
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
outside member
Name
(type = personal)
NamePart
(type = family)
Lupulescu
NamePart
(type = given)
Marian V
DisplayForm
Marian V Lupulescu
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
outside member
Name
(type = corporate)
NamePart
Rutgers University
Role
RoleTerm
(authority = RULIB)
degree grantor
Name
(type = corporate)
NamePart
Graduate School - Newark
Role
RoleTerm
(authority = RULIB)
school
TypeOfResource
Text
Genre
(authority = marcgt)
theses
OriginInfo
DateCreated
(qualifier = exact)
2012
DateOther
(qualifier = exact);
(type = degree)
2012-05
CopyrightDate
(qualifier = exact)
2012
Place
PlaceTerm
(type = code)
xx
Language
LanguageTerm
(authority = ISO639-2b);
(type = code)
eng
Abstract
(type = abstract)
Massive magnetite ‘veins’ formed during hydrothermal mineralization within northeast trending dextral shear zones in the crystalline bedrock of the western Hudson Highlands, New York. The veins formed in right step-over dilational jogs during the late stages of movement, in an open fracture system. Acidic metamorphic fluids derived from metavolcanic country rock and saturated with iron, flushed through fractures, reacted with wall rock, and exchanged chemical species. Buffered by the composition of the local country rock, fluids migrated and mixed along the fault during seismically induced ‘pumping’ events. The fluids migrated and deposited varying gangue mineral assemblages in favorable conditions in the dilated fractures. These assemblages reflect the changing flux, fluid buffering source, and/or physical conditions. Three distinct zones formed through this process. The wall rock adjacent to the vein was altered to form a ‘bleached’ zone. The vein contains an outer ‘layered’ zone of ferromagnesian-rich bands, and a core of ‘massive’ magnetite ore and gangue minerals. Bleached zones are dominated by amphibole and/or pyroxene, including scapolite, biotite, and apatite, within metavolcanic and quartzofeldspathic gneiss, or phlogopite and calcite within calc-silicate country rock. Calc-silicate layered and massive assemblages contain clinopyroxene, calcite, amphibole, and/or biotite or phlogopite. Quartzofeldspathic and metavolcanic layered and massive assemblages are dominated by amphibole and/or orthopyroxene, with quartz and/or sulfides and calcite locally. Both assemblages contain magnetite, including the massive ore, central to the deposits. Geochemical modeling of the bleached zone shows overall gains in volume (2.5-20.3%) and mass (3.1-18.1g relative to 100g of wall rock). In all instances, iron (2.4-5.3g), magnesium (1.0-2.8g), and calcium (0.6-6.5g), were gained, more so in calc-silicate adjacent deposits. Deposits adjacent to quartzofeldspathic country rock had large gains in silica (4.4-7.4g), whereas deposits in/near mafic metavolcanic rock lost silica (1.4-3.8g). Based on the mobility of silica, fluid fluxes were calculated between 5.3 x 105 to 6.6 x 106 cm3/cm2 for bleached zone alteration, large enough for significant element transport. Elements in abundance in the country rock contributed to the composition of the deposits, dominantly silica, calcium and sulfides.
Subject
(authority = RUETD)
Topic
Environmental Geology
RelatedItem
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TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier
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ETD
Identifier
ETD_3846
PhysicalDescription
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electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
ix, 78 p. : ill.
Note
(type = degree)
M.S.
Note
(type = bibliography)
Includes bibliographical references
Note
(type = vita)
Includes vita
Note
(type = statement of responsibility)
by Michael J. Kalczynski
Subject
(authority = ETD-LCSH)
Topic
Shear zones (Geology)--New York (State)--Hudson Highlands
Subject
(authority = ETD-LCSH)
Topic
Hydrothermal alteration--New York (State)--Hudson Highlands
Identifier
(type = hdl)
http://hdl.rutgers.edu/1782.1/rucore10002600001.ETD.000065042
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Graduate School - Newark Electronic Theses and Dissertations
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rucore10002600001
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NjNbRU
Identifier
(type = doi)
doi:10.7282/T3JQ0ZZF
Genre
(authority = ExL-Esploro)
ETD graduate
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Rights
RightsDeclaration
(ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder
(type = personal)
Name
FamilyName
Kalczynski
GivenName
Michael
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime
(encoding = w3cdtf);
(qualifier = exact);
(point = start)
2012-03-13 12:34:23
AssociatedEntity
Name
Michael Kalczynski
Role
Copyright holder
Affiliation
Rutgers University. Graduate School - Newark
AssociatedObject
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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