Martic Shear Zone Deformation In The Honeybrook Upland Northern Chester County, Pennsylvania

This study is an investigation of the effects of Martic shear zone deformation in the Honey Brook Upland, a region north of the Chester Valley, southeastern Pennsylvania. The Chester Valley and rocks adjacent to its southern boundary lie within the Martic shear zone, a zone of high ductile strain in southeastern Pennsylvania. This study found planar fabric in rocks in the southern and central regions of the Honey Brook Upland which resemble that of the Martic shear zone. Along the southern boundary of the Upland, a mylonitic fabric dips steeply to vertically, and its strike while varying, averages approximately N75E, similar in attitude to the Martic zone. Slightly north of the southern shear band, in the central Upland section, grain size is slightly coarser, although strike and dip resemble the southern shear zone and structures vary. Metamorphic facies assemblages in the southern and central regions consist of an upper amphibolite facies mineral assemblage overprinted by greenschist facies. The strong planar fabric composed of relict high temperature mineral assemblages on which a greenschist facies assemblage has been superimposed, is common in the Martic shear zone. This investigation found that the strong planar fabric, while enhanced by greenschist facies metamorphism, is primarily due to the amphibolite facies metamorphism and accompanying deformation.

Grantor dc:publisher

Temple University. Libraries

Year dc:date.issued

1994

Author dc:creator

• Bloomfield, Barbara

Advisor dc:contributor.advisor

• Hill, Mary Louise

Committee members dc:contributor.committeemember

• Myer, George H.
• Anderson, E. J. (Edwin Joseph), 1939-

• Geology
• Geoscience
• Environmental science

Statement dc:rights

• IN COPYRIGHT- This Rights Statement can be used for an Item that is in copyright. Using this statement implies that the organization making this Item available has determined that the Item is in copyright and either is the rights-holder, has obtained permission from the rights-holder(s) to make their Work(s) available, or makes the Item available under an exception or limitation to copyright (including Fair Use) that entitles it to make the Item available.

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/20.500.12613/8652

OAI record oai:identifier

https://scholarshare.temple.edu/server/oai/request?verb=GetRecord&metadataPrefix=dim&identifier=oai%3Ascholarshare.temple.edu%3A20.500.12613%2F8652