Geysers don't have to be big to be important!

"Thumping Hole" appears as a inconspicuous opening in the sinter gravel a few feet from Spasmodic Geyser, but it's eruptions are a good indicator for where energy and water is flowing in the group. Sometimes leading to rare eruptions of others.

Did you know geysers cycle together? One of the most dynamic and interconnected group of features in Yellowstone is the Sawmill Complex between Grand and Castle Geysers in the Upper Geyser Basin. In September, 2024 I Spent 8 hours logging water levels of several features. Here's the chart! 1/?

Walls of Coconino Sandstone mark the last step of the Grand Staircase before the chaos of the Transition Zone takes over in Central Arizona.

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The "Teepees" representing a rootless hydrothermal system formed when the Towel Creek Tuff careened into the Ancestral Verde River Valley 8 Million years ago. Truly one of the most unique and spectacular geological sites in Arizona.

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Columnar basalt of the Mormon Volcanic Field, Arizona. Subaru Forester for scale.

I'm getting more and more fascinated with the Tertiary volcanism of the state and it's relation with regional tectonics.

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One of my favorite outcrops in the Lake Mary road corridor.

Roadcut in a Dacite Flow from 3.1 Ma Mormon Mountain. Mormon Volcanic Field, Arizona.
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#geology #naturalist #arizona

Went out after work on Thanksgiving and hung out with some local outcrop of Precambrian Granite. Some of the oldest rocks in Arizona.

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Me ranting to my boss today about how our new stormwater pond has potential to be incredible habitat for the Park's wildlife.

One of the best parts of where I work is we are one of the best locations in Arizona to view White-nosed Coatis! They have been very active for the past week, such fascinating critters.

Arizona isn't all Desert. Fall colors below the Mogollon Rim today.