Terminology. Many authors prefer the term annular fissure over annular tear, as the latter seems to imply acute injury 1,2. In the setting of severe trauma with disruption of the disc, then the term disc rupture should be used. The term annular gap (referring to a relatively wide annular fissure) is non-standard 2.any authors prefer the term annular fissure over annular tear, as the latter seems to imply acute injury 1,2. In the setting of severe trauma with disruption of the disc, then the term disc rupture should be used.
Sedimentary rocks tend to be more porous than igneous rocks because there is more open space between the individual sediment grains than between the minerals in a crystallized â¦ rock.Porosity of rocks  Consolidated rocks (e.g. sandstone, shale, granite or limestone) potentially have more complex dual porosities, as compared with alluvial sediment.
Sedimentary rocks are types of rock that are formed by the deposition of material at the Earth 's surface and within bodies of water.Sedimentation is the collective name for processes that cause mineral and/or organic particles (detritus) to settle and accumulate or minerals to precipitate from a solution.edimentary rocks are deposited in layers as strata, forming a structure called bedding. The study of sedimentary rocks and rock strata provides information about the subsurface that is useful for civil engineering, for example in the construction of roads, houses, tunnels, canals or other structures.