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A Deep-Water Glauconitization Process on the Ivory Coast-Ghana Marginal Ridge (ODP Site 959): Determination of Fe3+-Rich Montmorillonite in Green Grains
Eastern Atlantic Fe3+-rich Montmorillonite Foraminifer Fillings Glauconitization Green Clay Pleistocene
2011/12/5
Abstract: The mineral and chemical composition of green glauconitic grains from ODP Site 959 (2100 m water depth) located on the northern flank of the Ivory Coast-Ghana Marginal Ridge was studied. Rec...
Preferred Orientation of Phyllosilicates in Gulf Coast Mudstones and Relation to the Smectite-Illite Transition
Gulf Coast Phyllosilicates Preferred Orientation Smectite-Illite Transition
2011/12/7
Abstract: Development of preferred orientations of illite-smectite (I-S) has been studied using X-ray diffraction (XRD) texture goniometry to produce pole figures for clay minerals of a suite of 16 mu...
Oxygen Isotope Compositions of Mixed-Layer Serpentine-Chlorite and Illite-Smectite in the Tuscaloosa Formation (U.S. Gulf Coast): Implications for Pore Fluids and Mineralogic Reactions
Diagenesis Illite-Smectite Oxygen Isotopes Sandstone Serpentine-Chlorite Tuscaloosa Formation
2011/12/8
Abstract: Oxygen isotopic compositions were determined for coexisting mixed-layer serpentine-chlorite (Sp-Ch) and illite-smectite (I-S) from 5 Tuscaloosa Formation sandstone cores sampled between 1937...
Comparison of the Mineralogical and Chemical Composition of 2 Shales from the Western Canada Sedimentary Basin and the United States Gulf Coast
Deposition Diagenesis Geochemistry Mineralogy Mixed-Layer Illite/Smectite Oxygen Isotopes
2011/12/9
Abstract: The mineralogy and geochemistry of shales reflect the composition of the initially deposited precursor mud, subsequently modified by diagenetic processes. To see if significant geochemical d...
The origin and diagenesis of grain-coating serpentine-chlorite in Tuscaloosa Formation sandstone, U.S. Gulf Coast
origin diagenesis grain-coating serpentine-chlorite Tuscaloosa Formation sandstone
2012/4/5
Randomly interstratified serpentine-chlorite (Sp-Ch) is ubiquitous in sandstones ofthe subsurface Tuscaloosa Formation. TheSp-Choccursasgraincoatings, porefillings, pel-oids,andinfillings.Thepresenceo...
A Chemical, XRD, and 27Al MAS NMR Investigation of Miocene Gulf Coast Shales with Application to Understanding Illite/Smectite Crystal-Chemistry
Burial diagenesis Gulf Coast Illite/smectite Miocene NMR
2011/12/30
This study assesses the distribution of Al and Fe in mixed-layer illite/smectites (I/S) in shales undergoing burial diagenetic changes, using evidence from 27Al NMR, XRD, and chemical analyses. Sample...
Illite/Smectite from Gulf Coast Shales: A Reappraisal of Transmission Electron Microscope Images
Illite/smectite Lattice-fringe images Periodicity Transmission electron microscopy X-ray powder diffraction
2012/1/9
Transmission electron microscope (TEM) images of mixed-layer illite/smectite (I/S) from Gulf Coast shales obtained earlier by the authors have been reexamined by comparing them with the calculated ima...
Authigenesis of Kaolinite and Chlorite in Texas Gulf Coast Sediments
Authigenesis Back-scattered electron imaging Chlorite Illite/smectite Iron Kaolinite
2012/1/11
Core cuttings from numerous wells traversing Oligocene through Recent sediments of the Texas Gulf Coast were examined with a scanning electron microscope using the back-scattered electron imaging mode...
Transmission Electron Microscopic Study of Diagenetic Chlorite in Gulf Coast Argillaceous Sediments
Berthierine Chlorite Diagenesis Illite/smectite Transmission electron microscopy
2012/2/1
Transmission and analytical electron microscopy have been used to study the diagenesis of the trioctahedral component of phyllosilicates (principally chlorite) in argillaceous core samples (depths of ...
Zeolites in Eocene Basaltic Pillow Lavas of the Siletz River Volcanics, Central Coast Range, Oregon
Analcime Apophyllite Isotope abundance Laumontite Mesolite Pillow lava Smectite Zeolites
2012/1/13
Zeolites and associated minerals occur in a tholeiitic basaltic pillow lava sequence that makes up part of the Eocene Siletz River Volcanics in the central Coast Range, Oregon. Regional zoning of zeol...
Burial Diagenesis in Gulf Coast Pelitic Sediments
Burial Diagenesis Gulf Coast Pelitic Sediments
2012/2/20
Subsurface samples of shales ranging in age from Pleistocene to Eocene obtained from five Gulf Coast oil wells were examined mineralogically and chemically to determine the nature and extent of burial...