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sedimentary rock, rock formed at or near Earth’s surface by the accumulation and lithification of sediment (detrital rock) or by the precipitation from solution at normal surface temperatures (chemical rock).
- Sedimentary Rock Types
Sedimentary rock - Clastic, Chemical, Organic: Conglomerates...
- Classification Systems
Sedimentary rock - Classification, Deposits, Types: In...
- Limestones and Dolomites
Sedimentary rock - Limestones, Dolomites, Calcite:...
- Iron-rich Sedimentary Rocks
Sedimentary rock - Iron-Rich, Clastic, Chemical: Almost all...
- Classification of Sandstones
Sedimentary rock - Clastic, Chemical, Organic: There are...
- Sedimentary Structures
Sedimentary structures are the larger, generally...
- Oil and Natural Gas
Sedimentary rock - Oil, Natural Gas, Formation: Natural gas...
- Evaporites
Sedimentary rock - Evaporites, Deposits, Minerals:...
- Sedimentary Rock Types
20 Μαρ 2021 · Even metamorphic rocks, such as marble and schist, can be discovered in rivers, their forms sculpted by the water’s flow. Granite, basalt, schist, limestone, shale, Jasper, agates, white or pink feldspar, and clear quartz are common in rivers.
24 Απρ 2017 · The formation of river rocks requires moving water and smaller rocks. Rocks easily eroded by water more likely form river rocks. Typical rocks with jagged edges can fall into the bottom of a river or stream bed or remain on the river bank.
5 Νοε 2020 · River rocks can be sedimentary, igneous, or metamorphic depending on the particular geography of the river where the rocks were found. A river that flows through a volcanic area is sure to have igneous rocks, for example.
19 Οκτ 2023 · Sedimentary rocks are formed on or near the Earth’s surface, in contrast to metamorphic and igneous rocks, which are formed deep within the Earth. The most important geological processes that lead to the creation of sedimentary rocks are erosion, weathering, dissolution, precipitation, and lithification.
23 Απρ 2024 · Erosion can move sediment through water, ice, or wind. Water can wash sediment, such as gravel or pebbles, down from a creek, into a river, and eventually to that river's delta. Deltas, river banks, and the bottom of waterfalls are common areas where sediment accumulates.
Clastic sedimentary rocks form from the accumulation and lithification of mechanical weathering debris. Examples include: breccia, conglomerate, sandstone, siltstone, and shale. Chemical sedimentary rocks form when dissolved materials preciptate from solution. Examples include: chert, some dolomites, flint, iron ore, limestones, and rock salt.
