Evidence for syntectonic crystallization for the mudstone to slate transition at Lehigh gap, Pennsylvania, U.S.A.
dc.contributor.author | Lee, Jung Hoo | en_US |
dc.contributor.author | Peacor, Donald R. | en_US |
dc.contributor.author | Lewis, Daniel D. | en_US |
dc.contributor.author | Wintsch, Robert P. | en_US |
dc.date.accessioned | 2006-04-07T19:40:39Z | |
dc.date.available | 2006-04-07T19:40:39Z | |
dc.date.issued | 1986 | en_US |
dc.identifier.citation | Lee, Jung Hoo, Peacor, Donald R., Lewis, Daniel D., Wintsch, Robert P. (1986)."Evidence for syntectonic crystallization for the mudstone to slate transition at Lehigh gap, Pennsylvania, U.S.A.." Journal of Structural Geology 8(7): 767-780. <http://hdl.handle.net/2027.42/26438> | en_US |
dc.identifier.uri | http://www.sciencedirect.com/science/article/B6V9D-488Y8JK-16/2/07dbb979872d7bf80bffbc5f41776fb6 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/26438 | |
dc.description.abstract | Data primarily for phyllosilicates have been obtained for the continuous transitional sequence from mudstone to slate with well-developed slaty cleavage at Lehigh Gap, Pennsylvania, and for slates from quarries in the same area. Samples were studied by optical microscopy, powder X-ray diffraction and electron microprobe analysis, with emphasis on transmission and analytical electron microscopy. Mineral grains are virtually free of deformation-induced strain. Concomitant with the gradual development of cleavage normal to bedding the following changes are observed or confirmed: (1) the orientation of phyllosilicate grains changes discontinuously from being preferentially parallel to bedding to being parallel to cleavage; (2) crystal imperfections as expressed in layer terminations, low angle grain boundary-like features and other defects decrease in density; (3) complex mixed layering is replaced by homogeneous packets of layers of single phases and (4) illite transforms to muscovite, with increase in K + Al and change from a 1Md to 2M polytype. Slaty cleavage apparently develops due in part to pressure solution of phyllosilicates oriented parallel to bedding, mass transport of components, and crystallization to form new grains parallel to cleavage. It reflects transitions from imperfect, metastable phases toward ordered stable phases in a low temperature (~225[deg]C) metamorphic environment. | en_US |
dc.format.extent | 1765956 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Elsevier | en_US |
dc.title | Evidence for syntectonic crystallization for the mudstone to slate transition at Lehigh gap, Pennsylvania, U.S.A. | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Geology and Earth Sciences | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Geological Sciences, University of Michigan, Ann Arbor, MI 48109, U.S.A. | en_US |
dc.contributor.affiliationum | Department of Geological Sciences, University of Michigan, Ann Arbor, MI 48109, U.S.A. | en_US |
dc.contributor.affiliationother | Department of Geology, Indiana University, Bloomington, IN 47405, U.S.A. | en_US |
dc.contributor.affiliationother | Department of Geology, Indiana University, Bloomington, IN 47405, U.S.A. | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/26438/1/0000526.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1016/0191-8141(86)90024-6 | en_US |
dc.identifier.source | Journal of Structural Geology | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.