Sedimentary Flashcards
Formed from, pre existing rock
Sedimentary rock
Process of sedimentary rock
Rock and minerals -> weathering -> sediments-> erosion/ transportation-> deposition/ sedimentation -> diagenesis/lithification -> SEDIMENTARY ROCKS
Chem or physical process that change the characteristics of rock on the earth’s surface
Weathering
Type of weathering that rocks are broken dowm into smaller pieces
Physical weathering
Physical wethering are common in
Cold and dry areas
Freezing and thawing of water
Frost wedging
Peeling away of large sheet of loosen material at the surface of the earth
Exfoliation
It is the process of friction caused by scuffing, scratching, wearing down, marring, and rubbing away of materials.
Abrasion
Weathering by plants
Biological activity
Rock change into another substance by reacting with a chemical
Chemical weathering
Type of chemical weathering that oxygeninteracts causing things such as rusting
Oxidation
Type of chemical weathering that water interacts through absorption
Hydration
Type of chemical weathering that water mixes with CO2
Carbonation
When a carbonic acid dissolves creating caverns and caves
Karst topography
all material between fresh bedrock and the ground surface, including weathered bedrock, deposits and soil
Ragolith
-Combination of rock, minerals and organic matter
- a product of weathering
Soil
Transportation of rocks
Erosion
Primary agent of erosion
Water
Organic material in soil
Humus
The base of the soil profile
Bedrock
Organic matter and soil life
Surface/top soil
Materials that bounced along the substrate
Bedload
Clast moved by rolling along the bottom of the ait flow and water flow
Rolling
Particles moves on a series of jumps, periodically leaving the bed surface and carried short distances within the fuild before returning to bed again
Saltration
Materials carried in suspension
Suspended loa
Materials carried as dissolves solids
Dissolve loads
Laying down of sediments
Deposition
Sediment particles is sorted based on their sizes and density
Sorting
Layering of sedimentary rock
Stratification
layers are squeezed together and any water mixed in with the sediments is forced out.
Compaction
Turing solid rock into sediments
Weathering
How long does it take to complete a sedimentary rock
A million years ago
Compacting of the layers of the rocks
Cementation
Converting sediments into sedimentary rock
Lithification
process by which sedimentary rocks are altered after they are deposited, but before they are buried and lithified
Diagenesis
Mud
Mudstones and shale
Sand
Sandstone
Gravel
Conglomerate
Made from the broken fragments of the other rock cemented together by a mineral
Clastic sedimentary rock
Particle:
Boulder and cobble
Conglomerate
Particle:
Pebble and granule
Breccia
Particle:
Sand
Sandstone
Particle:
Silt and clay
Shale, mudstone,siltstone
Made up of rounded or sub rounded pebbles
Crudaceous rocks
Made up of mostly sands
Arenaceous rocks
Made up of clay size sediments
Example: shale
Argillaceous rocks
Components are precipitates from dissolved load
Non clastic rocks
Formed by chemical precipitation
Chemical sedimentary rocks
Made up of carbonate
Limestone
Give atleast 3 types of limestone
Chalk, tufa, crystalline limestone, coquina, grainstone, marl
It is not have a salty taste and softer than a rocksalt
Rock gypsum
Gypsum is an example of
Evaporites
Formed by the eveaporation of water and precipitation of dissolved minerals
Evaporites
It is formed from the precipitation of silica rich solutions in various environments
Chert
Chert is made up of
Quartz
Form limestone that deposited by mineral rich hotspring or geyser
Travertine
Examples of evaporite
Halite, gypsum, anhydrite
Type of sedimentary rock that is from the remains of the living things
Organic sedimentary rock
Example of organic sedimentary rock
Coal, chalk
Clast is rounded
Conglomerate
Clast is angular
Breccia