1,723,251 research outputs found
Colin Condit interview
No full textColin Condit taught in the psychology department at Central Washington University, 1965-1983.https://digitalcommons.cwu.edu/cwura_interviews/1108/thumbnail.jp
UA94/6/1 Teresa Condit Scrapbook
No full textScrapbook regarding WKU womens\u27 basketball team compiled by Teresa Condit
A Conversation with Cecelia Condit
No full textIn this audiovisual recording from Wednesday, March 24, 2010, as part of the 41st Annual UND Writers Conference: Mind the Gap: Print, New Media, Art, Cecelia Condit has a conversation with Laurel Reuter. There is also a screening of the film Annie Lloyd.
Conversation moderated by Laurel Reuter, Founding Director of the North Dakota Museum of Art.
A transcription of this recording is available here
EBSD data from Condit et al., Rheology of metasedimentary rocks at the base of the subduction seismogenic zone
No full textEBSD and raw electron microprobe data for two schist samples from the Arosa Zone, in central Switzerlan
Slab temperature evolution over the lifetime of a subduction zone: Model input files
No full textThe input files necessary for all of the numerical subduction models contained within Holt and Condit (in review at G-cubed). In addition to the input parameter (.prm) files, the repository contains an ASPECT 2.1.0 plugin (modified version of the visco_plastic rheology module) and python scripts (.py) to create the input geometries (.txt files) that are loaded into the model parameter files.
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Reference:
Holt, A. F., and Condit, C. B. Slab temperature evolution over the lifetime of a subduction zone. In revision for Geochem., Geophys., Geosys
Junior Recital: Cailey Wheeler & Rebekah Gerads (2023)
No full textSNC Music Department presents: a Junior Vocal Recital featuring Cailey Wheeler & Rebekah Gerads (2023)
Subduction Zone Blues: Laboratory and Field Constraints on the Rheology and Deformation Mechanisms of Mafic Blueschist at the Subduction Interface
No full textThesis (Ph.D.)--University of Washington, 2025Subduction zones are key drivers of plate tectonics, facilitating crustal recycling and deformation. The associated geological hazards of these convergent margins, including megathrust earthquakes and tsunamis, pose significant risks to society. Although these hazards are generated by frictional, seismic slip along the shallow subduction interface, aseismic, ductile deformation plays a critical role by modulating the strength of the subducting slab and transferring stress up-dip to load the seismogenic zone. During subduction, progressive metamorphic transformations of mid-ocean ridge basalt to blueschist and, ultimately, to eclogite alters the chemical and mechanical properties of the subducting crust through changes in its mineralogy, volatile content, density, and rheological strength. Field observations and limited experimental work have offered some insights into the evolution of subducting oceanic crust—such as a strength hierarchy estimating blueschist to be weaker than both gabbro (basalt) and eclogite—but a substantial knowledge gap persists. This thesis addresses this knowledge gap by investigating key questions regarding subduction zone dynamics including: (1) Does blueschist generate an observable seismic signal that can improve seismic imaging of blueschist along the subduction interface? (2) What mechanism(s) accommodates blueschist deformation along the subduction interface down-dip of the seismogenic zone and what are the implications for the seismic-aseismic transition? (3) How do chemical and mechanical changes at the blueschist-eclogite transition influence interface subduction zone dynamics during the subduction and exhumation of HP/LT lithologies?
Electron backscatter diffraction (EBSD)-based petrofabric analysis was applied to model the seismic anisotropy generated by a suite of mafic blueschists exhumed from a range of peak P-T conditions relevant to the ductilely deforming interface in active subduction zones. The blueschists displayed a broad range of P-wave anisotropies (AVp) up to 20%, correlating positively with the abundance and deformation-produced crystallographic preferred orientation (CPO) of the sodic amphibole mineral, glaucophane. Modeled AVp magnitudes were commonly ~10%, suggesting a common blueschist seismic anisotropy signal with potential to improve mapping of the extent and deformation of blueschists along the subduction interface.
To investigate the underlying deformation that generates observed seismic anisotropies, EBSD techniques—including a novel technique coupling weighted Burgers vector and misorientation analyses—were applied to glaucophane in a lawsonite blueschist from the Catalina Schist that was exhumed from P-T conditions down-dip of the seismogenic zone. The results of this investigation reveal deformation of blueschists at these conditions to be primarily accommodated by the dislocation creep mechanism. A suite of deformation experiments were performed on glaucophane aggregates to derive a constitutive, power-law relationship (flow law) for dislocation creep in glaucophane and, by extension, blueschist. Extrapolation of flow laws for glaucophane dislocation creep and related subduction lithology flow laws to natural conditions predict deformation by dislocation creep in the subducting slab initiates at ~350°C, evolving to grain-size-sensitive mechanisms with increasing temperatures and pore fluid pressures or finer grain sizes.
Detailed microstructural and petrological investigation were conducted on an exhumed blueschist-eclogite transition on Vroulidia Beach, Sifnos Island, Greece to investigate the complex interplay between deformation, metamorphism, and aqueous fluids in during the subduction and exhumation of blueschists and eclogites. This investigation demonstrates that fluid-deformation feedbacks promote zones of weakness that further localize deformation and fluid flow to enhance retrogression in such zones during exhumation. Together, these investigations advance our understanding of deformation and metamorphic processes in blueschists, eclogites, and at the blueschist-eclogite transition and subduction zone dynamics
Condit, Margaret J.
No full textBody shipped to Washington, PA. Samuel Condit - husband.https://stars.library.ucf.edu/cfm-ch-memoranda-1927/1406/thumbnail.jp
Photomicrographs for "Structure and properties of the Cascadia plate interface: evidence from a newly-described exhumed paleomegathrust in the Olympic Subduction Complex"
No full textStraboMicro project associated with GSA Bulletin manuscript "Structure and properties of the Cascadia plate interface: evidence from a newly-described exhumed paleomegathrust in the Olympic Subduction Complex" by Anna M. Ledeczi, Harold J. Tobin, Tsai-Wei Chen, Sean R. Mulcahy, and Cailey B. Condit. DOI: 10.1130/B38335.
Marker rescue mapping of the combined Condit/Dales collection of temperature-sensitive vaccinia virus mutants
No full textAbstractComplementation analysis of the combined Condit/Dales collection of vaccinia virus temperature-sensitive mutants has been reported (Lackner, C.A., D'Costa, S.M., Buck, C., Condit, R.C., 2003. Complementation analysis of the Dales collection of vaccinia virus temperature-sensitive mutants. Virology 305, 240–259), however not all complementation groups have previously been assigned to single genes on the viral genome. We have used marker rescue to map at least one representative of each complementation group to a unique viral gene. The final combined collection contains 124 temperature-sensitive mutants affecting 38 viral genes, plus five double mutants
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