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Journal Article
Journal: Geosphere
Published: 27 October 2017
Geosphere (2017) 13 (6): 1973-1992.
...) techniques. The Gastre superunit reveals a very consistent pattern of NW-SE–striking steeply dipping magmatic foliations. Tectonic fabrics within the CPB are scarce and generally parallel to the magmatic fabrics. The magmatic and solid-state lineations within the CPB are steeply, intermediately, or shallowly...
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Journal Article
Published: 29 June 2017
Scottish Journal of Geology (2017) 53 (2): 41-52.
...-bearing metamorphic assemblage and gneissic layering. We suggest that retrogressive reaction softening and pre-existing planes of weakness, such as the c. 2490 Ma Inverian fabric and gneiss–dyke contacts, localized strain around but not within the xenolith. Such strain localization could generate...
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Series: Geological Society, London, Special Publications
Published: 01 January 2016
DOI: 10.1144/SP416.20
EISBN: 9781862397187
... Cal (95 vol%)+Dol (5 vol%)+Qtz+Phl+Pl+Kfs+Py+Ap Fabric HE (curved/embayed) HO (sutured/embayed) HO (sutured/embayed) AGS [mm] 0.61 0.78 0.82 MGS [mm] 2.12 1.66 1.54 δ 13 C [‰, PDB] 3.65 2.56 2.76 δ 18 O [‰, PDB] −2.08 −2.19 −1.70 Average values of fabric...
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Series: Geological Society, London, Special Publications
Published: 01 January 2016
DOI: 10.1144/SP416.10
EISBN: 9781862397187
... Abstract Highly porous and soft calcarenites, often called ‘calcareous tuffs’, are commonly found throughout Southern Italy and are traditionally used as building materials. The petrophysical features of some of them were determined, focusing on the microstructure (fabric and porosimetric...
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Series: AAPG Memoir
Published: 01 January 2016
DOI: 10.1306/13592016M1123692
EISBN: 9781629812755
... with observation under the field emission scanning electron microscope (FESEM). Potential issues with Ar-ion milled/FESEM preparation and imaging include (1) the small size of sample cubes for upscaling, (2) loss of structural fabric during the milling–imaging process, (3) fewer non-inorganic pore types observed...
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Series: GSA Special Papers
Published: 01 December 2015
DOI: 10.1130/2015.2513(08)
Series: GSA Special Papers
Published: 01 May 2015
DOI: 10.1130/2015.2511(10)
..., involving seafloor fabric, basement paleolatitudes, and age data. We utilize seafloor fabric, including fracture zones and the rift margins of large igneous provinces, to derive quantitative rotations. The timing of such rotations is constrained using rock ages, bounding magnetic isochrons, and estimates...
Series: GSA Memoirs
Published: 01 January 2014
DOI: 10.1130/2014.1211(10)
... unit at any given location it is the same in all units irrespective of intrusive order. Thin dikes, typically late-stage hornblende gabbro, commonly intrude parallel to layering. The strikes of magmatic lineations and modal layers are consistent with the populations of strikes of fabrics...
Series: GSA Memoirs
Published: 01 January 2014
DOI: 10.1130/2014.1211(11)
Series: GSA Memoirs
Published: 01 January 2014
DOI: 10.1130/2014.1211(13)
... structural transpositions is recorded in the metasedimentary rocks. Many outcrops have two intersecting planar fabrics and a linear fabric produced by the intersecting planar fabrics. West to east within the deformation zone, the rock fabric changes from phyllitic to schistose, and the grade of metamorphism...
Series: GSA Memoirs
Published: 01 January 2014
DOI: 10.1130/2014.1211(22)
... to the accretion of the Alisitos arc to North America in the mid-Cretaceous, although Paleozoic units contain an older fabric that supports deformation between the latest Mississippian and Late Permian. Overall, the study area marks the transition from an accreted ocean-island arc to the North American continental...
Series: GSA Memoirs
Published: 01 January 2014
DOI: 10.1130/2014.1211(23)
... We report structural, paleomagnetic, and magnetic fabric data for mid-Cretaceous plutons of the Peninsular Ranges batholith along a transect at ~30°N latitude. Four plutons in the western sector are characterized by characteristic magnetizations residing in magnetite. In this sector, El Milagro...
Series: GSA Field Guide
Published: 01 January 2014
DOI: 10.1130/2014.0034(04)
EISBN: 9780813756349
... increasingly dominated by fractional crystallization and magmatic fabric formation during these lulls—including the formation of late leucogranitic bodies. This general pattern is also seen in the smaller magmatic lobes (miniature Tuolumne Intrusive Complexes?). The lobes thus most likely formed smaller...
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Series: GSA Field Guide
Published: 01 January 2013
DOI: 10.1130/2013.0033(05)
EISBN: 9780813756332
... outcrop distribution (shaded) of Precambrian rocks in Colorado. Abbreviations: CMB—Colorado mineral belt (Tweto and Sims, 1963 ; McCoy et al., 2005 ); HSZ—Homestake shear zone; GCSZ—Grizzly Creek shear zone (cf., Allen and Shaw, 2008 , 2011). Table I. Summary of Tectonic Events, Fabrics...
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Series: GCSSEPM
Published: 01 December 2012
DOI: 10.5724/gcs.12.32.0761
EISBN: 978-0-9836097-8-0
... Abstract Organo-clay fabric and physico-chemistry of marine mud play important roles in early sediment diagenesis including the development of mass physical properties, consolidation behavior, and sequestration of organic matter (OM) in sediments over geologic time. Transmission electron...
Series: GSA Special Papers
Published: 01 August 2011
DOI: 10.1130/2011.2480(08)
... tectonic process was recycled within the prism as the latter developed. Thus, as the block-in-matrix fabric was originally sedimentary and labeled D0, the tectonic mélange process that forms block-in-matrix fabric is only conjectural for the Nabae complex. Also it is suggested that these deformations...
Series: GSA Special Papers
Published: 01 September 2010
DOI: 10.1130/2010.2465(08)
.... The vast damage zone and the complex fracture pattern predicted for the crater floor is well preserved in the new high-resolution topographic data for the Sudbury Structure. These regional topographic data allow the distinction between inside-basin fabric (radial topographic lineaments) and crater-floor...
Series: GSA Special Papers
Published: 01 September 2010
DOI: 10.1130/2010.2465(30)