SSHS Physical Geology - Sediments & Sedimentary Rocks
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| 292706082 | bedding | An arrangement of layers or beds of rock. | 0 | |
| 292706083 | bedding plane | A nearly flat surface separating two beds of sedimentary rock. | 1 | |
| 292706084 | cement | The solid material that precipitates in the pore space of sediments, binding the grains together to form solid rock. | 2 | |
| 292706085 | cementation | The chemical precipitation of material in the spaces between sediment grains, binding the grains together into a hard rock. | 3 | |
| 292706086 | chemical sedimentary rock | A rock composed of material precipitated directly from solution. | 4 | |
| 292706087 | chert | A hard, compact, fine-grained sedimentary rock formed almost entirely of silica. | 5 | |
| 292706088 | clastic sedimentary rock | A sedimentary rock composed of fragments of preexisting rock. | 6 | |
| 292706089 | clastic texture | An arrangement of rock fragments bound into a rigid network by cement. | 7 | |
| 292706090 | clay | Sediment composed of particles with diameter less than 1/256 mm. | 8 | |
| 292706091 | coal | A sedimentary rock formed from the consolidation of plant material. It is rich in carbon, usually black, and burns readily. | 9 | |
| 292706092 | compaction | A loss in overall volume and pore space of a rock as the particles are packed closer together by the weight of overlying material. | 10 | |
| 292706093 | conglomerate | A coarse-grained sedimentary rock (grains coarser than 2 mm) formed by the cementation of rounded gravel. | 11 | |
| 292706094 | contact | Boundary surface between two different rock types or ages of rocks. | 12 | |
| 292706095 | cross-bedding | An arrangement of relatively thin layers of rock inclined at an angle to the more nearly horizontal bedding planes of the larger rock unit. | 13 | |
| 292706096 | crystalline texture | An arrangement of interlocking crystals. | 14 | |
| 292706097 | crystallization | Crystal development and growth. | 15 | |
| 292706098 | deposition | The settling or coming to rest of transported material. | 16 | |
| 292706099 | dolomite | A sedimentary rock composed mostly of the mineral dolomite. | 17 | |
| 292706100 | environment of deposition | The location in which deposition occurs, usually marked by characteristic physical, chemical, or biological conditions. | 18 | |
| 292706101 | evaporate | Rock that forms from crystals precipitating during evaporation of water. | 19 | |
| 292706102 | formation | A body of rock of considerable thickness that has a recognizable unity or similarity making it distinguishable from adjacent rock units. Usually composed of one bed or several beds of sedimentary rock, although the term is also applied to units of metamorphic and igneous rock. A convenient unit for mapping, describing, or interpreting the geology of a region. | 20 | |
| 292706103 | fossil | Traces of plants or animals preserved in rock. | 21 | |
| 292706104 | graded bed | A stream that exhibits a delicate balance between its transporting capacity and the sediment load available to it. | 22 | |
| 292706105 | gravel | Rounded particles coarser than 2 mm in diameter. | 23 | |
| 292706106 | limestone | A sedimentary rock composed mostly of calcite. | 24 | |
| 292706107 | lithification | The consolidation of sediment into sedimentary rock. | 25 | |
| 292706108 | matrix | Fine-grained material found in the pore space between larger sediment grains. | 26 | |
| 292706109 | mud crack | Polygonal crack formed in very fine grained sediment as it dries. | 27 | |
| 292706110 | organic sedimentary rock | Rock composed mostly of the remains of plants and animals. | 28 | |
| 292706111 | original horizontality | The deposition of most water-laid sediment in horizontal or near-horizontal layers that are essentially parallel to Earth's surface. | 29 | |
| 292706112 | pore space | The total amount of space taken up by openings between sediment grains. | 30 | |
| 292706113 | recrystallization | The development of new crystals in a rock, often of the same composition as the original grains. | 31 | |
| 292706114 | ripple mark | Any of the small ridges formed on sediment surfaces exposed to moving wind or water. The ridges form perpendicularly to the motion. | 32 | |
| 292706115 | rounding | The grinding away of sharp edges and corners of rock fragments during transportation. | 33 | |
| 292706116 | sand | Sediment composed of particles with a diameter between 1/16 mm and 2 mm. | 34 | |
| 292706117 | sandstone | A medium-grained sedimentary rock (grains between 1/16 mm and 2 mm) formed by the cementation of sand grains. | 35 | |
| 292706118 | sediment | Loose, solid particles that can originate by (1) weathering and erosion of preexisting rocks, (2) chemical precipitation from solution, usually in water, and (3) secretion by organisms. | 36 | |
| 292706119 | sedimentary breccia | A coarse-grained sedimentary rock (grains coarser than 2 mm) formed by the cementation of angular rubble. | 37 | |
| 292706120 | sedimentary rock | Rock that has formed from (1) lithification of any type of sediment, (2) precipitation from solution, or (3) consolidation of the remains of plants or animals. | 38 | |
| 292706121 | sedimentary structure | A feature found within sedimentary rocks, usually formed during or shortly after deposition of the sediment and before lithification. | 39 | |
| 292706122 | shale | A fine-grained sedimentary rock (grains finer than 1/16 mm in diameter) formed by the cementation of silt and clay (mud). Shale has thin layers (laminations) and an ability to split (fissility) into small chips. | 40 | |
| 292706123 | silt | A tabular intrusive structure concordant with the country rock. | 41 |
