A transmission electron microscope study of white mica crystallite size distribution in a mudstone to slate transitional sequence, North Wales, UK
dc.contributor.author | Roberts, B. | en_US |
dc.contributor.author | Merriman, R. J. | en_US |
dc.contributor.author | Peacor, Donald R. | en_US |
dc.date.accessioned | 2006-09-11T18:48:37Z | |
dc.date.available | 2006-09-11T18:48:37Z | |
dc.date.issued | 1990-12 | en_US |
dc.identifier.citation | Merriman, R. J.; Roberts, B.; Peacor, D. R.; (1990). "A transmission electron microscope study of white mica crystallite size distribution in a mudstone to slate transitional sequence, North Wales, UK." Contributions to Mineralogy and Petrology 106(1): 27-40. <http://hdl.handle.net/2027.42/47293> | en_US |
dc.identifier.issn | 0010-7999 | en_US |
dc.identifier.issn | 1432-0967 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/47293 | |
dc.description.abstract | High-resolution transmission electron microscopy (HRTEM) measurements of the thickness of white mica crystallites were made on three pelite samples that represented a prograde transition from diagenetic mudstone though anchizonal slate to epizonal slate. Crystallite thickness, measured normal to (001), increases as grade increases, whereas the XRD measured 10 Å peak-profile, the Kubler index, decreases. The mode of the TEM-measured size population can be correlated with the effective crystallite size N (001) determined by XRD. The results indicate that the Kubler index of white mica crystallinity measures changes in the crystallite size population that result from prograde increases in the size of coherent X-ray scattering domains. These changes conform to the Scherrer relationship between XRD peak broadening and small crystallite size. Lattice ‘strain’ broadening is relatively unimportant, and is confined to white mica populations in the diagenetic mudstone. Rapid increases in crystallite size occur in the anchizone, coincident with cleavage development. Changes in the distribution of crystallite thickness with advancing grade and cleavage development are characteristic of grain-growth by Ostwald ripening. The Kubler index rapidly loses sensitivity as an indicator of metapelitic grade within the epizone. | en_US |
dc.format.extent | 5055264 bytes | |
dc.format.extent | 3115 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Springer-Verlag | en_US |
dc.subject.other | Geosciences | en_US |
dc.subject.other | Mineral Resources | en_US |
dc.subject.other | Mineralogy | en_US |
dc.subject.other | Geology | en_US |
dc.title | A transmission electron microscope study of white mica crystallite size distribution in a mudstone to slate transitional sequence, North Wales, UK | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Geology and Earth Sciences | en_US |
dc.subject.hlbsecondlevel | Chemistry | 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, 48109, Ann Arbor, Michigan, USA | en_US |
dc.contributor.affiliationother | British Geological Survey, Keyworth, NG12 5GG, Nottingham, UK | en_US |
dc.contributor.affiliationother | Department of Geology, Birkbeck College, Malet Street, WC1 1EX, London, UK | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/47293/1/410_2004_Article_BF00306406.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1007/BF00306406 | en_US |
dc.identifier.source | Contributions to Mineralogy and Petrology | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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