FLUVIAL LANDFORMS Flashcards
fluvial processes inscribed as branching patterns of stream channels and drainage divides
drainage systems
law stating that streams cause drainage patterns, valley systems, and encompassing drainage basin
playfair’s law
- does not correlate to the topology/geology of the area
- follows path irrespective of changes in topography
discordant drainage patterns
- inconsequent
- established prior to the growth of the structure they cross
- erosion rate > uplift rates
antecedent
- superinduced
- attains course across geologic structures
- discovers buried structures
superimposed
concordant drainage pattern as a direct consequence of original surface slope
consequent stream
concordant drainage pattern where course is determined by selective headward erosion along weak strata
subsequent streams
concordant drainage pattern where course follows original relief at a lower elevation
resequent streams
concordant drainage pattern where stream flows opposite of the consequent stream
obsequent stream
concordant drainage pattern of random dendritic patterns
insequent streams
Vs of streams at point of confluence point downstream
Vs of contour lines point upstream
rule of Vs
an area of land where all flowing surface water converges to a single point and flows into another body of water
drainage basin
- aka watershed
- water parts/ elevated terrain separates neighboring drainage basins
drainage divide
river/stream flowing into larger river/lake
tributary
branch of river that does not return to the main stream
distributary