Technical Report

 
2. Soil Macromorphology:
 
Macromorphology is best evaluated from the in situ examination of the soil profile.
A recently dug pit large enough for observation of a pedon is desirable.
Old exposures such as road cuts and ditches are acceptable only for preliminary examination because 
morphological features often become altered after prolonged exposure.
he exposed profile should be probed by hand, with the aid of a knife or small pick to remove any 
alterations resulting from digging equipment and to expose the natural condition of the soil. Following 
this cleanup is a good time to photograph the profile, including a tape measure or some other suitable 
reference for scale.
 
3. Micromorphology: 
 
Micromorphology is a term used in biology, mineralogy and soil science.
The fine-level structures or morphology of an organism, mineral, or soil component visible through 
microscopy. Micromorphology is the branch of soil science that is concerned with the description, 
interpretation and, to an increasing extent, the measurement of components, features and fabrics in 
soils at a microscopic level". 
 
4. Fabric, Structure and Assemblage :
 
Fabric is the mutual arrangement and relationship between particles within the soil as a whole and 
within the various features, while structure is the type and degree of aggregation.
The totality of all features in a specimen is called an ensemble or assemblage. 

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The main fabric relationships seen in thin sections are in the fine earth, including both mineral and 
organic materials. These may be observed in thin sections but in a number of cases SEM is required.
 
5. Fine material :
This refers to the material with a diameter of less than about 20µm and which is beyond the resolving 
power of the optical microscope.
It may be arranged as granules, masses, and links between grains or forms a complete matrix.