Depositional Fabric in Permian Reef Limestones

1955 ◽  
Vol 63 (4) ◽  
pp. 301-309 ◽  
Author(s):  
Norman D. Newell
Keyword(s):  
Depositional Fabric

The Alteration of the Pore Spaces in Sandstones

1973 ◽  
Vol 31 ◽  
pp. 210-211
Author(s):  
R. E. Ferrell ◽  
G. G. Paulson
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
The Other ◽  
Coarse Grained ◽  
Depositional Fabric ◽  
Soluble Components ◽  
Scanning Electron ◽  
Shape And Size

The pore spaces in sandstones are the result of the original depositional fabric and the degree of post-depositional alteration that the rock has experienced. The largest pore volumes are present in coarse-grained, well-sorted materials with high sphericity. The chief mechanisms which alter the shape and size of the pores are precipitation of cementing agents and the dissolution of soluble components. Each process may operate alone or in combination with the other, or there may be several generations of cementation and solution.The scanning electron microscope has ‘been used in this study to reveal the morphology of the pore spaces in a variety of moderate porosity, orthoquartzites.

Soil studies at Swan Hill, Victoria, Australia. III. Some aspects of soil development on aeolian materials

Soil Research ◽  
1963 ◽  
Vol 1 (1) ◽  
pp. 117 ◽  
Author(s):  
HM Churchward
Keyword(s):  
Soil Development ◽  
Soil Profiles ◽  
Dense Matrix ◽  
Initial Development ◽  
Depositional Fabric

The progress of soil development at Swan Hill has been examined by the comparison of four successively older soil profiles which have all developed on aeolian materials at different times in history. The initial development is one of homogenization effected by biotic agencies that obliterates the depositional fabric and structure. There are found to be several other trends in profile differentiation which have advanced further in each older soil. These trends include the leaching of lime from the surface and its concentration into concretions, and the removal of clay from the surface and its deposition as coatings to grains, pores, and peds and as a dense matrix.

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