Exploring Methods to Determine the Strain Ellipsoid in Dunites to Provide Context for Ebsd Cpo Patterns

Ess, Jory Van; Peterson, Ginny

doi:10.1130/abs/2018nc-311977

Search citation statements

Order By: Relevance

Paper Sections

Select...

Synthetic Dunite Microstructures1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2018

Publication Types

Select...

Other1

Relationship

Self Cite1

Independent0

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous work by VanEss and Peterson (2018) used the program ImageJ and grain maps generated with EBSD analysis (left) to estimate grain size and shape for strain analysis. Here, we explore the same approach to compare to thin section estimates of grain size.…”

Section: Synthetic Dunite Microstructuresmentioning

confidence: 99%

Microstructure and Paleopiezometric Constraints on Deformation Conditions of Olivine From the Southern Appalachian Buck Creek Ultramafic Complex

Pummell¹,

Peterson²

2018

Geological Society of America Abstracts With Programs

Self Cite

View full text Add to dashboard Cite

Microstructural and paleopiezometric analyses help constrain conditions and mechanisms of deformation of the Buck Creek ultramafic complex in southwestern North Carolina. Previous work has determined that the complex is an emplaced fragment of partially subducted ocean crust that experienced anhydrous prograde metamorphic conditions to about 800˚C and 1.0 GPa. Twelve olivine-rich dunite/troctolite samples from the Buck Creek ultramafic complex are the focus of this study. Previous work with electron backscatter diffraction (EBSD) shows that the olivine crystallographic preferred orientation (CPO) patterns are generally consistent with axial-[100] or D-type fabric formed under moderate to high stresses with low water content. Axial fabrics may also result from non-plane strain conditions (e.g. constriction or flattening).

show abstract

Section: Synthetic Dunite Microstructuresmentioning

confidence: 99%