clastic
Made of fragments
Clastic describes rocks or sediments composed of fragments broken from preexisting rocks.
Sandstone and shale are clastic rocks, formed when eroded particles settle and compact over time.
The term appears in geology to distinguish fragmental rocks from those formed by chemical precipitation or organic accumulation: clastic sediments deposited by ancient rivers.
Corporation spanning many industries
Particle dimension measurement
- sortingArranging into sequence
- roundnessState of being curved
- sphericityDegree of roundness
- angularityHaving sharp corners
matrix · cement · porosity · permeability · bimodal · imbrication · cross-bedding · lamination
Atmospheric breakdown of materials
- erosionGradual wearing away
- transportationMoving people or goods
- depositionFormal testimony under oath
- compactionReducing volume through pressure
cementation · sorting · rounding · abrasion · disaggregation · fragmentation · entrainment · saltation
conglomerate
Corporation spanning many industries
grain size
Particle dimension measurement
- sortingArranging into sequence
- roundnessState of being curved
- sphericityDegree of roundness
angularity · matrix · cement · porosity · permeability · bimodal · imbrication · cross-bedding · lamination
weathering
Atmospheric breakdown of materials
- erosionGradual wearing away
- transportationMoving people or goods
- depositionFormal testimony under oath
compaction · cementation · sorting · rounding · abrasion · disaggregation · fragmentation · entrainment · saltation · suspension
sand
Fine rock particles
boulders · silt · clay · detritus · sediment · fragments · grains · lithic
alluvium
Water-deposited loose sediment
till · outwash · loess · drift · deltaic · fluvial · alluvial fan · debris flow · lahar · bajada
clasticchemical
Substance with defined composition
crystalline · biogenic · precipitated · organic · in situ
clasticwhole
Full and undivided
intact · unfragmented · continuous · integrated · unbroken