An Introduction to the Study of Fabrics of Geological Bodies by Author B. Sander

By Author B. Sander

Show description

Read Online or Download An Introduction to the Study of Fabrics of Geological Bodies PDF

Similar geology books

Embankments on Organic Soils

A growing number of civil engineering structures are being outfitted on gentle soils. As parts with greater foundations are used up the need to be capable to construct constructions on delicate soils raises. the main tricky of soppy soils are natural soils due in general to their excessive compressibility (much greater than in mineral soils), and in addition their very low shear power.

Collision and Collapse at the Africa-arabia-eurasia Subduction Zone (Geological Society Special Publication)

The Mediterranean and northern Arabian areas offer a different typical laboratory to constrain geodynamics linked to arc-continent and continent-continent collision and next orogenic cave in through analysing local and temporal distributions of a number of the components within the geological archive.

Extra info for An Introduction to the Study of Fabrics of Geological Bodies

Sample text

Symmetry or space-rhythm is the recurrence of identity at the same space intervals from the symmetry-element. Intervals of time and space are inseparably related to each other. The rhythmic element is the predominating concept in space rhythm (symmetry) and time rhythm. This is the recurrence of identity at the same intervals in space or in time. In connection with the three genetic types of symmetry distinguished above by: (1) vector portrayal; (2) processes of packing; (3) translation, the following must be noted in relation to the fabric: In the case of vector portrayal, a portrayable symmetry can be produced by: I.

Boundary surfaces on which beds slide over each other, may also be rhythmically warped. , and may be described purely kinematically and non-genetically as tangential undulation. The collation of all such cases, in terms of the movement picture, is not yet complete. Purely kinematically, the following is common to all these "undulatory displacements" in the widest sense: 1. The phenomenon occurs only in non-homogeneous domains, whether heterogeneous layers glide over each other—perhaps the heterogeneous condition resulting from discontinuously changing velocity gradients normal to the layers may be sufficient cause—or whether a materially different film, a heterogeneous boundary layer which has been there from the outset or has developed during the process, separates the neighbouring layers, or whether materially heterogeneous regions flow in conjunction.

Axis" by monoclinic or approximately rotation-symmetrical shearing perpendicular to B; (b) affine deformation by gliding on two sets of planes: geometrical experiment, internally rotated shear-surfaces and the circular sections in orthorhombic deformation by gliding on two sets of planes; (c) movement-pictures of affine deformation constructed from the material so far introduced: actual compound strain, orthorhombic strain and rotation, geometrically undistorted and material-constant planes, oblique compression, symmetrical compression.

Download PDF sample

Rated 4.33 of 5 – based on 9 votes