Clerical:

Themes of the Day:

• Clastic Sedimentary Rocks Classification
• Sandstone Classification

Clastic Sedimentary Rocks Classification

• Grain size subdivisions
• Phi = -log₂mm
• Sorting
• Stages of Textural Maturity
• Conglomerates
  • oligomictic - all clasts of the same composition
  • polymictic - variety of clast compositions
  • in provenance studies - Poway clasts (chemical comparison) & Gualala Basin
• Gualala, CA Region Turbidites
  • Basin Strat Column
  • Seacliffs Overview
  • Same outcrop as a Gigapan
  • Bouma Sequence 1
  • Bouma Sequence 2
  • Turbidites
  • Large Boulder
  • Conglomerates with Starfish
• Other Conglomerates
  • Point Lobos, CA
  • Point Lobos, CA Gigapan
  • Point Lobos, CA Gigapan - a different view
  • Fluvial Conglomerate, Kings Canyon, CA
  • Interlayered with Basalt flows, Keeweenawan Rift, Ontario
  • Another view, Keeweenawan Rift, Ontario
  • Sedimentary Breccia (anthropogenic?)
  • Alluvial fan/Fluvial conglomerates, Eastern California
  • Quaternary fanglomerate near Bisbee, AZ
  • Conglomerate, Southern Henry Mountains
  • Imbricated clasts, Death Valley NP
  • Sedimentary Breccia, Mosaic Canyon, Death Valley NP
  • Volcanic Breccia, Montezuma Pass, Arizona
  • Auriferous Gravels, I-80, California
  • Gardiner River Conglomerates (Absarokan), Yellowstone NP
  • Obsidian-bearing Lahar Deposits, Yellowstone NP