Sentence examples for dark subsurface from inspiring English sources

Some of these larger forms are permanent residents of the dark, subsurface layers; some hibernate or spend certain parts of their life cycles in underground chambers; some come and go freely between their burrows and the upper world.

As rain falls on the land, it seeps down through pores and cracks in soil and rock, penetrating deeper and deeper, until eventually it reaches a zone where all the pores of the bedrock are filled with water — a dark, subsurface sea, rising under hills, sinking beneath valleys.

dark coloured subsurface horizon with illuvial amorphous substances composed of organic matter and aluminium, with or without iron.

Most Calcisols have a thin (=<10 cm) brown or pale brown surface horizon over a slightly darker subsurface horizon and/or a yellowish brown subsoil that is speckled with white calcite mottles.

umbric thick, dark, acidic umbric Subsurface horizons   argillic clay mineral deposition argic.

Based on current knowledge of the martian environment and the conservative nature of planetary protection, the following features constitute Mars Special regions: Gullies and bright streaks associated with them, pasted-on terrain, deep subsurface, dark streaks only on a case-by-case basis, others to be determined.

Interestingly, it was further found that changes occurring on the diamond surface during photoelectrochemical polarization in the absence of copper in solution facilitate subsequent copper electrodeposition in the dark, possibly due to the formation of subsurface hydrogen.

Other straight rilles, some of which have branches for example, Rima Hyginus and the rilles on the floor of the great crater Alphonsus appear to be tension cracks in regions where subsurface gases have driven eruptions of dark material resulting in rimless vent craters.

The dark vertical lines indicate approximate thermodynamic equilibrium limits for subsurface conditions [31, 31].

Working conditions were horrendous: men and their sons worked 12 to 16 grueling hours in dark, dangerous mines dying from a notorious plague of subsurface explosions, cave-ins and black lung.

Profile development: mostly AhBC profiles with a mollic surface horizon (thinner and somewhat less dark than in Chernozems) over a cambic or argic subsurface horizon.