The pattern of the feature can also be described. The pattern of mottles or surface features on peds or layering within horizons are often described using the terms below
Anastomosing:
Pattern of repeatedly branching and re-joining.
Bifurcating:
Splitting into two.
Crenulated:
Surface with total length in a least one direction more than 1.5 times the direct distance across the surface in the same direction, cf. planar, undulating linear, sinuous, tortuous.
Diamond:
Pattern of parallelogram shapes in cross section with longest sides not more than 1.5 times the length of the shortest sides.
Divaricating:
Repeatedly bifurcating in a particular direction.
Lens:
Pattern composed of a shape or shapes which are lenticular in two dimensions, cf. diamond.
Linear:
Feature with long axis much longer than intermediate axis and with total length less than 1.1 times the direct distance, from one each to the other, cf. Sinuous, tortuous, planar, undulating, crenulated. (see Brown loam picture)
Parallel:
Pattern in which linear, sinuous or tortuous features or planar, undulating or crenulated surfaces in cross-section, are everywhere within 25% of the average distance from their neighbour, cf. sub-parallel.
Planar:
Surface in which total length in any particular direction is less than 1.1 times the direct distance across the surface in that direction, cf. undulating, crenulated, linear, sinuous, tortuous.
Polygonal:
Many-sided pattern in two dimensions.
Radiating:
Pattern formed by radiating arms from a centre.
Random:
No discernible pattern.
The pattern of the feature can also be described. The pattern of mottles or surface features on peds or layering within horizons are often described using the terms below
Rectangular:
Broadly four-sided pattern in two dimensions, with main sides meeting near to right angles, and with the long axis more than 1.5 times the length of the short axis.
Sinuous:
Feature with long axis much longer than intermediate axis, and with total length between 1.1 times and 1.5 times the direct distance from the one end to the other cf. linear, tortuous, planar, undulating, crenulated.
Spot:
Pattern composed of circular shapes. (See Ped Coating picture) This horizon has abundant spot mottles and planar parting with organic coatings.
Square:
Broadly four-sided pattern in two dimensions with main sides meeting near to right angles, and with the long axis less than 1.5 times the length of the short axis.
Sub-parallel:
Pattern in which linear, sinuous or tortuous featues, or planar, undulating or crenulated surfaces in cross-section, do not meet the criteria for parallel but in which less than 10% meet each other cf. parrallel.
Tortuous:
Feature with long axis much longer than intermediate axis, and with total length more than 1.5 times the direct distance from one end to the other, cf. linear, sinuous, planar, undulating, crenulated.
Tubular:
A cylindrical shape which forms a ring in cross-section and which may or may not encircle a void.
Undulating:
Surface with total length in at least one direction between 1.1 and 1.5 times the direct distance across the surface in that same direction cf. planar, crenulated, linear, sinuous, tortuous.
Vein-like:
A general term for a linear-like pattern. (See Puketaha Veins picture)
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Brown Loam
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Brown Loam
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Puketaha Veins
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Ped Coating
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Puketaha Veins
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Ped Coating
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