SedPet Exam 1

• Porosity


  Measure of pore space
• Permeability


  measure of interconnectedness of pores
• weathering


  breaking down
• erosion


  moving down broken material
• mechanical weathering


  water, wind, ice, plants and animals, exfoliation, insolation, abrasion
• chemical weathering


  simple solution, hydration/dehydration, hydrolysis, oxidation/reduction
• simple solution example


  SiO2 + 2 H2O -> H4SiO4
• mass movement slow -> fast


  creep, slump, mudflow, debris/rockslide, snow avalanche, rock/debris fall
• environments for physical weathering


  cold, moist
• transportation of grains


  roll, creep, saltation
• fluid flow variables


  density and viscosity
• Bernoulli effect


  Velocity is higher the top because there's less pressure
• capacity


  max load
• competence


  max grain size
• normal graded beds


  lower energy
• do granite fragments count as feldspars in Folk's

  Yes
• variables for river


  viscosity, competency, capacity, depth
• Reynolds #


  inertia:viscosity, predicts laminar or turbulent
• Froude #


  velocity:gravity, predicts bedforms