Soil structure characterisation (type, size and grade of soil structure) with depth in the studied soils PS, PC: Pichidegua soil with slurry application or control; SS, SC: San Pedro soil with slurry application or control Soil Depth (cm) Soil structure PS 0-27 Moderate medium subangular
blocky 27-64 Weak medium subangular
blocky 64-120 Weak medium and coarse subangular
blocky PC 0-32 Moderate medium subangular
blocky 32-52 Moderate coarse subangular
blocky 52-86 Moderate medium subangular
blocky 86-120 Massive SS 0-20 Strong fine subangular
blocky 20-55 Moderate medium subangular
blocky 55-70 Single grain 70-120 Moderate medium subangular
blocky SC 0-35 Moderate medium subangular
blocky 35-62 Moderate coarse subangular blocky 62-120 Moderate fine and medium subangular blocky Table 4.
12) in having subangular
rather than rounded bights, less curvature at the filament base, and in some gill takers, and a less rounded mesial edge of the medial process.
The facies is mainly made up of sandsized, moderately-sorted mainly angular to subangular
consisting of altered serpentine, chert and subordinate quartz with minor components of pebble-sized clasts ophiolites, micro-quartz, polyquartz and micrite limestone.
Venation across the wing irregularly sinuous, with smaller irregular cross veins forming subangular
, more or less isodiametric polygonal areoles (Fig.
Microstructure: complex (mainly massive, subangular
blocky and channel).
The study of roundness of the grains show values which indicative of mostly subangular
Indicators of past agricultural use included an abrupt soil structure change (granular to subangular
blocky) at depths of 13 cm to 25 cm, non-pedogenic mixing of the A and B horizons, and evidence of compaction in the lower A horizon.
It contains abundant subangular
to subrounded, yellow dolomudstone clasts up to 1 cm in diameter (Fig.
Lithologically the samples are 1- parallel laminated, very fine to fine grained, angular to subangular
and moderately sorted or 2-wavy laminated, fine to medium grained subangular
to subrounded and moderately to well sorted.
The Bt horizon has a moderate subangular
blocky soil structure with common clay films on ped faces.
The discovery was located by prospectors employed by the company's joint venture partner, Avard Hudgins, and is comprised of angular to subangular
pieces of frost heaved material ranging from small cobbles to one-meter blocks that are considered to be locally derived.
The discovery comprised of angular to subangular
pieces of frost heaved material ranging from small cobbles up to one metre blocks that are considered to be locally derived.