unconsolidated
21marl — Unconsolidated sedimentary rock consisting largely of calcium carbonate and clay; usage varies from calcareous clay to earthy limestone, and in some parts of the United States, the term has been used for any unconsolidated sedimentary rock… …
22incoherent material — Unconsolidated material [16] …
23sand — Unconsolidated detrital rock material [16] …
24valley fill — Unconsolidated debris accumulated on a valley bottom [16] …
25alluvium — Unconsolidated, clastic material subaerially deposited by running water, including gravel, sand, silt, clay, and various mixtures of these. Compare: colluvium, slope alluvium. HP …
26cinders — Unconsolidated, juvenile, vitric, vesicular pyroclastic material; individual fragments are 2.0 mm or more in at least one dimension with an apparent specific gravity (including vesicles) of more than 1.0 and less than 2.0 g/cm3. Compare:… …
27colluvium — Unconsolidated, unsorted earth material being transported or deposited on side slopes and/or at the base of slopes by mass movement (e.g., direct gravitational action) and by local, unconcentrated runoff. Compare: alluvium, slope alluvium,… …
28dredge spoils — Unconsolidated, randomly mixed sediments composed of rock, soil, and/or shell materials extracted and deposited during dredging and dumping activities. Dredge spoils lie unconformably upon natural, undisturbed soil or regolith and can form… …
29lahar deposit — Unconsolidated volcaniclastic material emplaced as mudflows on or near the flanks of a volcano. SW …
30muck — Unconsolidated soil material consisting primarily of highly decomposed organic material in which the original plant parts are not recognizable (e.g., sapric soil materials of Soil Taxonomy). It generally contains more mineral matter, fewer… …