The Structural Development of the Kanmantoo Schist Based on FIAs from Samples at Petrel Cove and the Strathalbyn Anticline

Material Information

Title:: The Structural Development of the Kanmantoo Schist Based on FIAs from Samples at Petrel Cove and the Strathalbyn Anticline
Creator:: Bianchi, Laura ( author )
Publication Date:: 10/24/2008

Subjects / Keywords:: Foliation intersection/inflection axes
Petrel Cove
Quest 2008
SUNY Oswego
Genre:: Article

Abstract:: Inclusions within porphyroblasts from Petrel Cove and the Strathalbyn Anticline provide evidence for metamorphic events not previously recognized in the Delamerian orogen because they contain more than five foliations defining at least two foliation intersection/inflection axes (FIAs). At Petrel Cove one FIA is preserved within cordierite. An identical FIA is preserved within staurolite in the Strathalbyn Anticline but another younger FIA is present in andalusite. The latter sequence appears to resolve the problem of apparently synchronous multiple phases of growth of staurolite and andalusite in these rocks (e.g., Adshead-Bell & Bell, 1999). Reactivation has destroyed these foliations or rotated them into parallelism with the bedding, which is why they were not distinguished until measurements of FIAs were made. The FIA succession distinguishes a progression of metamorphic events and further work of this type in the region will provide enough data for the shear senses suggested by this preliminary study to be confirmed.
General Note:: Helen Daly Bohmer Quest Best Paper
General Note:: Submitted by Shannon Pritting (pritting@oswego.edu) on 2008-10-24.
General Note:: Made available in DSpace on 2008-10-24T20:23:10Z (GMT).

Source Institution:: SUNY Oswego
Holding Location:: SUNY Oswego
Rights Management:: All applicable rights reserved by the source institution and holding location.