+86 0371 8654 9132

the crystallographic fabric and texture of siderite in

The crystallographic fabric and texture of siderite in ...

Dec 21, 2001 · The siderite crystallographic fabric was analysed using the anisotropy of magnetic susceptibility, which is carried by paramagnetic siderite. The siderite concretions from marine and non-marine formations exhibit differences in fabric style, although both display increases in the degree of preferred siderite c-axis orientation towards the ...

The crystallographic fabric and texture of siderite in ...

The crystallographic fabric and texture of siderite in concretions: Implications for siderite nucleation and growth processes

(PDF) The crystallographic fabric and texture of siderite ...

The crystallographic fabric and texture of siderite in concretions: implications for siderite nucleation and growth processes Sedimentology, 2001 Mark W Hounslow

The crystallographic fabric and texture of siderite in ...

The crystallographic fabric and texture of siderite in concretions: implications for siderite nucleation and growth processes Hounslow, Mark W. Abstract. Publication: Sedimentology. Pub Date: June 2001 DOI: 10.1046/j.1365-3091.2001.00375.x Bibcode: 2001Sedim..48..533H ...

CiteSeerX — and

The crystallographic fabric and texture of siderite in concretions: implications for siderite nucleation Keyphrases siderite nucleation crystallographic fabric

and - CORE

The crystallographic fabric and texture of siderite in concretions: implications for siderite nucleatio Topics: fabric, magnetic siderite, substrate, susceptibility . Year: 2015. OAI ...

(PDF) Magnesian Siderite in Carbonate Concretions from ...

The crystallographic fabric and texture of siderite in concretions: Implications for siderite nucleation and growth processes ... The siderite crystallographic fabric was analysed using the ...

Siderite Mineral Data

General Siderite Information : Chemical Formula: Fe++CO3 : Composition: Molecular Weight = 115.86 gm Iron 48.20 % Fe 62.01 % FeO: Carbon 10.37 % C 37.99 % CO 2: Oxygen 41.43 % O: 100.00 % 100.00 % = TOTAL OXIDE

Sedimentary facies and climate control on formation of ...

Sep 19, 2006 · 高达10%返现 · Hounslow MW (2001) The crystallographic fabric and texture of siderite in concretions: implications for siderite nucleation and growth processes. Sedimentology 48:533–557. CAS Article Google Scholar Hupfer M, Fischer P, Friese K (1998) Phosphorus retention mechanisms in the sediment of an eutrophic mining lake.

Phyllosilicate orientation demonstrates early timing of ...

Jul 20, 2008 · The crystallographic fabric and texture of siderite in concretions: implications for siderite nucleation and growth processes Sedimentology , 48 ( 3 ) ( 2001 ) , pp. 533 - 557 View Record in Scopus Google Scholar

Magnetic and crystallographic fabrics of siderite ... - CORE

The siderite crystallographic fabric was analysed using the anisotropy of magnetic susceptibility, which is carried by paramagnetic siderite. The siderite concretions from marine and non-marine formations exhibit differences in fabric style, although both display increases in the degree of preferred siderite c-axis orientation towards the ...

Grain Growth Kinetics of Quartz and Calcite Aggregates ...

Mark W. Hounslow The crystallographic fabric and texture of siderite in concretions: implications for siderite nucleation and growth processes, Sedimentology 48, ... crystallographic preferred orientation, and stress history, Journal of Structural Geology 21, ...

Phyllosilicate orientation demonstrates early timing of ...

Jul 20, 2008 · The crystallographic fabric and texture of siderite in concretions: implications for siderite nucleation and growth processes Sedimentology , 48 ( 3 ) ( 2001 ) , pp. 533 - 557 View Record in Scopus Google Scholar

Geochemistry of diagenetic non-silicate minerals: kinetic ...

Hounslow M (2001) The crystallographic fabric and texture of siderite in concretions: implications for siderite nucleation and growth processes, Sedimentology, 10.1046/j.1365-3091.2001.00375.x, 48:3, (533-557), Online publication date: 1-Jun-2001.

Magnesian siderite in carbonate concretions from ...

Magnesian siderite in carbonate concretions from argillaceous sediments in the Westphalian of Yorkshire - Volume 39 Issue 306. Skip to main content Accessibility help We use cookies to distinguish you from other users and to provide you with a better experience on our websites.

On the Birth of Structural and Crystallographic Fabric ...

In contrast to the long history of crystallographic fabric measurements in deep firn and ice (Perutz et al., 1939; Gow and Williamson, 1976), the crystallographic fabric of snow has only recently been studied. The evolution of the crystallographic fabric of a natural alpine snow sample subjected to a temperature gradient was analyzed from thin ...

Crossing redox boundaries—Aquifer redox history and ...

Nov 15, 2013 · The crystallographic fabric and texture of siderite in concretions: implications for siderite nucleation and growth processes Sedimentology , 48 ( 2001 ) , pp. 533 - 557 View Record in Scopus Google Scholar

TEXTURE ANALYSIS IN ACAPULCO AND LODRAN

lattice preferred orientation (LPO, or crystallographic fabric) of minerals using electron backscatter diffrac-tion (EBSD technique) is a new and powerful ap-proach, as yet barely used for the study of primitive achondrites [1, 2]. In this study, LPO of silicate phases (olivine, orthopyroxene, plagioclase) and

Texture (crystalline) - Wikipedia

Texture (crystalline) Pole figures displaying crystallographic texture of gamma-TiAl in an alpha2-gamma alloy, as measured by high energy X-rays. In materials science, texture is the distribution of crystallographic orientations of a polycrystalline sample (it is also part of the geological fabric ). A sample in which these orientations are ...

Fabric (geology) - Wikipedia

In geology, a rock's fabric describes the spatial and geometric configuration of all the elements that make it up. In sedimentary rocks, the fabric developed depends on the depositional environment and can provide information on current directions at the time of deposition. In structural geology, fabrics may provide information on both the orientation and magnitude of the strains that have ...

Theory of Preferred Crystal Orientation Developed by ...

A. N. Nikitin, T. I. Ivankina, K. Ullemeyer, R. N. Vasin Similar quartz crystallographic textures in rocks of continental earth’s crust (by neutron diffraction data): III. Relation of quartz texture types with means and conditions of texture formation, Crystallography Reports 53, no.5 5 (Sep 2008): 828–836.

A Discussion on natural strain and geological structure ...

Hounslow M (2001) The crystallographic fabric and texture of siderite in concretions: implications for siderite nucleation and growth processes, Sedimentology, 10.1046/j.1365-3091.2001.00375.x, 48:3, (533-557), Online publication date: 1-Jun-2001.

(PDF) Book reviews. Palaeomagnetism and Diagenesis in ...

The crystallographic fabric and texture of siderite in concretions: implications for siderite nucleation and growth processes. By Mark W Hounslow. Paleomagnetic evidence for dextral strike-slip motion in the Pyrenees during alpine convergence (Mauléon basin, France. By teresa roman.

Preferred orientation and elastic anisotropy in shales

phase composition, crystallographic preferred orientation, ... fracture and pore fabric and porosity by comparing calculated and measuredelasticproperties. Clay minerals are fine grained and poorly crystalline. Conven- ... texture; thus, illite and smectite are treated as a single mixed-layer

Crystallographic Fabrics, Grain Boundary Microstructure ...

The characterization of grain boundaries and shapes along with crystallographic preferred orientations (CPOs) are a key aspect of investigations of rock microstructures for their correlation with deformation mechanisms. Rapid developments have occurred in the studying rock microstructures due to recent improvements in analytical techniques such as Electron Backscatter Diffraction (EBSD).

On the Birth of Structural and Crystallographic Fabric ...

Sep 16, 2020 · Distributions of c-axis crystallographic orientations (also called crystallographic fabrics or textures) were measured on thin sections of snow made along the impregnated microCT samples, following the technique described in Riche et al. (2012). Operating in a -15°C room, two to four thin sections were extracted from one microCT sample.

A Comparison of Ice Fabrics and Textures at Camp Century ...

A comparison of the crystalline texture and fabric of the two deep cores to bedrock from Camp Century, Greenland, and Byrd station, Antarctica, reveals striking similarities. Each core exhibits a fabric profile which progresses from depositional fabrics at shallow depths through multi-maxima transitional stages into single maximum distributions.

Magnetic Fabric and Ductile Deformation Differences ...

of 33.5 ± 5.5 °C/km for the siderite stage of the Droždiak vein in the northern part of the Gemeric unit. The temperatures of 227–263 °C, paleodepth of 11.2 ± 0.6 km, and thermal gradients of 22 ± 3°C/km have been obtained from the siderite veins in the Rožňava ore

Texture and fabric characteristics of atmospheric ice ...

texture and crystallographic c-axis orientation of saline sea ice, river, lake and fresh water ice in 1971 [2]. Later in 1976, Ramseier presented a detailed analysis of this classification [3]. The crystallographic orientation of such materials is normally represented by a stereographic projection, also called a

Heterogeneous deformation and quartz crystallographic ...

Quartz crystallographic fabric transitions in well-exposed mylonites immediately beneath the Moine Thrust at the Stack of Glencoul (NW Scotland) have been investigated by optical microscopy, X-ray texture goniometry and Orientation Distribution Function analysis. A progressive change is observed from asymmetrical kinked single girdle c-axis ...

Magnetic susceptibility studies of the upper Albian-Danian ...

Mar 15, 2016 · Hounslow, M.W. (2001) The crystallographic fabric and texture of siderite in concretions: implications for siderite nucleation and growth processes. Sedimentology, v.48, pp.533–57. Article Google Scholar Hrouda, F. (1982) Magnetic anisotropy of rocks and its application in Geology and Geophysics. Geophys. Surv., v.5, pp.37–82. ...

Minerals | Free Full-Text | Crystallographic and Seismic ...

Eight samples of limestones and marbles were studied by neutron diffraction to collect quantitative texture (i.e., crystallographic preferred orientations or CPO) of calcite deforming at different depths in the crust. We studied the different Texture patterns developed in shear zones at different depth and their influence on seismic anisotropies. Samples were collected in the French and ...

Extreme iron isotope variation of pyrite in the Muping ...

Pyrite, siderite and pyrrhotite are main minerals in quartz-polymetallic sulfides vein, in which the grain size of Py3 varies from coarse- to fine-grain and part pyrites suffered from recrystallization . A remarkable texture is that fine-grained and lamellar py3 and siderite dissolved pyrrhotite at Muping (Fig. 3, Fig. 4).

THE SYLLABUS: B.Sc., Geology (H), 1+1+1 System, Effective ...

THE SYLLABUS: B.Sc., Geology (H), 1+1+1 System, Effective 2017-2018 P age 4 of 19 (Tapas Bhattacharyya), December 6, 2016 Chairperson, UGBoS, Geology, CU 4. Description and general idea of origin of textures and microstructures of common igneous rocks:

ALEX STREKEISEN-Perthite-

Accordingly, plutonic rocks exhibit intra - crystalline textures in alkali feldspar crystals that are not seen in volcanic rocks. Orthoclase (KAlSi 3 O 8 ) - Albite (NaAlSi 3 O 8 ) system Dry, or with only small concentrations of water at relatively low P, this system is complicated by a large stability field of leucite (KAlSi 2 O 6 ), Fig.1 a ...

Microscale strain partitioning? Differential quartz ...

K. P. Larson et al.: Differential quartz crystallographic fabric development in Phyllite 1321 Figure 2. Thin section scale photomicrographs of specimen S32 presented in plane-polarized light (a), cross-polarized light (b), and as an AVA diagram (c).The location of quartz grains analysed is indicated by different coloured and shaded circles in (c).White circles denote

Textural Evolution of Plagioclase Feldspar across a Shear ...

In that case, similar to the complex feldspar described here, the preservation of compositional zoning in the single siderite grains argues against a significant shear component associated with the replacement. A significant consequence of the formation of the complex feldspar texture is the large number of new interfaces formed in the process.

Lattice preferred orientation and seismic anisotropy in ...

The crystallographic fabric and texture of siderite in concretions: implications for siderite nucleation and growth processes ... Quartz crystallographic fabrics of undeformed sandstones. Tectonic Studies Group, Programme and Abstracts, 17th Annual Meeting,