We attribute the hardpan
that developed in some of the pots with [D.
Rototillers fluff up the soil down to about seven inches and then leave you with hardpan
But when faced with a 300-yard shot at a Kudu across a flat hardpan
, my PH literally forced his sticks on me.
Engineered to withstand high stress, the TCT Series is ideal for drilling in soft sandstone or limestone formations, caliche, hardpan
and other tough materials.
is often present in the subsoil due to silicon cementing.
Active Head Mole piercing tools boasts of a reciprocating head design characterized by a double-strike system that uses the initial impact force to increase production in difficult soils such as cobble, hard clay and hardpan
Desert and chaparral soils are relatively shallow with no distinct soil profiles (Table 5) due to the presence of hardpan
Soil depth is 80 cm underlain with hardpan
of calcium carbonate, locally called 'murram' layer.
From these sources, Sears concluded that Ohio prairies resulted from successional changes where aquatic habitats decreased as the substrate became drier and plants of prairie communities became established on thick, boulder-free, fine silt soil underlain by a hardpan
, with a depth of 100 feet or more to bedrock.
Calcretes (caliche, hardpan
, duricrust) are formed mainly in semiarid and arid regions and consist of hard, dense deposits of secondary carbonates that occur as nodules, lumps, crusts, or thick concrete-like layers in the lower soil zone.
Palis & Fischer (1997) found that off-road vehicle use disrupts pond floor microtopography by breaking the hardpan
that lies below the pond and causing a shorter hydroperiod, thus decreasing the availability of ephemeral ponds for breeding amphibians.
Most are sandy or contoured, hardpan
bottomed with a short supply of slab-rock.