Geyser Gazing, Spring Spotting, and Waterfall Watching

Day 3 at Yellowstone

Grand Prismatic Spring

• Statistics

• Microbial mats

• Water tint

• Outflow region

• Water vapor tint

Fairy Falls• Sheer, planar cliff

faces

• Artesian well?

• Faulting?

• Rhyolite dome?

Imperial Geyser

• What’s a geyser?

• Mechanics

• Outflow

Octopus Spring

• Hyperthermophilic microbes

• Microbial cooperation

• Taq polymerase

• Rocks with nasal problems

Old Faithful and

The Upper Geyser Basin

Lion Geyser

Beehive Geyser

Grotto Geyser

Morning Glory Pool

Look! A tree!