Sediments highly variable, depends on energy of river
SEDIMENTARY ARCHIVES
Terrestrial or Continental Environments
Alluvial fans
SEDIMENTARY ARCHIVES
Terrestrial or Continental Environments
Lakes or Lacustrine
SEDIMENTARY ARCHIVES
Terrestrial or Continental Environments
Lakes or Lacustrine
SEDIMENTARY ARCHIVES
Terrestrial or Continental Environments
Glacial
SEDIMENTARY ARCHIVES
Terrestrial or Continental Environments
Glacial
SEDIMENTARY ARCHIVES
Terrestrial or Continental Environments
Glacial
TillOutwash
SEDIMENTARY ARCHIVES
Terrestrial or Continental Environments
Eolian
SEDIMENTARY ARCHIVES
Terrestrial or Continental Environments
Eolian
SEDIMENTARY ARCHIVES
Terrestrial or Continental Environments
Eolian
Wind can move sedimentSand size or smallerVery well sorted
SEDIMENTARY ARCHIVESSedimentary Structures
Formed during or shortly after depositionPrior to lithification Can be used to interpret environments
"The question is not what you look at, but what you see" Henry David Thoreau November 1830
SEDIMENTARY ARCHIVESSedimentary Structures
Mudcracks
SEDIMENTARY ARCHIVESSedimentary Structures
SEDIMENTARY ARCHIVESSedimentary Structures
SEDIMENTARY ARCHIVESSedimentary Structures
Ripples
Indicate directionUni-directional = asymmetrical or currentBi-directional = symmetrical or oscillationMulti-directional = interference
Found in shallow marine water and streams
SEDIMENTARY ARCHIVESSedimentary Structures
Ripples
Oscillation Ripples Up direction?
SEDIMENTARY ARCHIVESSedimentary Structures
Ripples
Current Ripples
SEDIMENTARY ARCHIVESSedimentary Structures
SEDIMENTARY ARCHIVESSedimentary Structures
Ripples
Interference Ripples
SEDIMENTARY ARCHIVESSedimentary Structures
Cross-bedding or Cross-stratification
SEDIMENTARY ARCHIVESSedimentary Structures
Cross-bedding or Cross-stratification
Beds in which one set is inclined to othersAdvance of delta or dunesCurrent dominated environmentWind or waterSlope of cross-bed can indicates current or prevailing wind direction