Fracture: A break in a rock formation due to structural stresses; e.g., faults, shears, joints, and planes of fracture cleavage.
Free Product: A petroleum hydrocarbon in the liquid free or non aqueous phase. (see Non-aqueous Phase Liquid) ...
Fractured bedrock aquifer - An aquifer composed of solid rock, but where most water flows through cracks and fractures in the rock instead of through pore spaces. Flow through fractured rock is typically relatively fast.
Fracture
Generally any break in a rock, whether or not it causes displacement, due to mechanical failure by stress; includes cracks, joints and faults.
Free Product ...
Fracture: A break in a rock formation as a result of structural stresses (e.g. faults, joints, shears). If they are open, fractures may provide pathways for fluid movement.
A fracture or fracture zone along which there has been displacement of rock parallel to the fracture.
fecal coliform ...
spring (artesian)Spring whose water issues under artesian pressure generally through fractures that penetrate from the land surface through a confining bed of rock and into more permeable water-bearing rock where the water is under greater than ...
Commonly it has bleached fracture planes separating very coarse prismatic units and frequently the secondary structure is platy.
fatigue A process leading to fracture resulting from repeated stress cycles well below the normal tensile strength. Such failures start as tiny cracks that grow to cause total failure.
fauna The animals of a region taken collectively.
Water-bearing rocks: Several types of rocks can hold water, including: sedimentary deposits (sand and gravel), channels in carbonate rocks (limestone), lava tubes or cooling fractures in igneous rocks, and fractures in hard rocks.
osteoporosis
Significant decrease in bone mass with increased porosity and increased tendency to fracture.
ovicide
Substance intended to kill eggs.
Groundwater: Water occurring in the zone of saturation in an aquifer or soil. Water beneath the surface of the earth which saturates the pores and fractures of sand, gravel, and rock formations.
Slab avalanche:avalanche that begins when fracture lines develop in a snowpack and a large surface plate breaks away, then crumbles into blocks as it falls down a slope.
 See also: Water, Soil, Air, Site, Treatment
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