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You are browsing the archive for California Geology Archives - AGU Blogosphere.

20 September 2019

This is an ex-eruption!

Recently, as chronicled in Scientific American, I was involved with amending the eruptive record at California’s Mount Shasta to remove an eruption that was supposedly seen by a French mapping expedition in 1786. USGS researchers had already been puzzling over it for years – evidence was slim, since the area was already prone to forest fires and there was nothing in the geologic record to suggest that it happened. William …

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2 February 2018

Rehearsing for eruptions

In the past few weeks, I’ve had the opportunity to help run several “tabletop” exercises with the USGS and our partners where we walk through a timeline of what might happen during a volcanic eruption, and ask participants to make decisions about how they would need to respond and work together. I find them both fascinating and exhausting.

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24 February 2017

(Geo)science Matters: Snow surveys aren’t just for TV

Everyone (in California, at least) has seen those clips that get run every winter of the snow surveys: people walking out into a white-blanketed meadow to shove a pole into the snow and record the depth. Or, in the case of the 2015 broadcast, walking out onto muddy grass and gesturing sadly at a lack of snow in which to do this. It’s a good photo op, but the broadcasts rarely follow up with much of the science behind the survey.

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27 January 2017

(Geo)science matters: Landslide research in California

Right now it’s incredibly important for scientists to hammer home why science is essential, important and needs to be practiced rigorously, transparently and without censorship. It’s clear that we can no longer limit ourselves to broader impact statements in our next grant applications. I thought I’d do my part by starting a new blog series and highlighting United States geoscientists and their work in action.

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15 January 2016

Hunting blueschist (with bonus newt)

My first hike of the new year was to the Lexington Reservoir near Los Gatos. Fellow USGS postdoc Kayla Iacovino (@kalyai) came along to help search for blueschist-facies rocks in what’s locally known as Franciscan Complex melange. Now, I’m getting pretty good at spotting serpentinite – not that it isn’t fairly distinctive – but I’ve been hoping to see some blueschist as well. I found this USGS publication which shows a sample of blueschist from a spot “near” Lexington Reservoir in Santa Clara county, so that was where we headed.

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31 December 2015

2015 through a geologist’s eyes

It’s the last day of my eighth year of blogging. I’ve had a pretty amazing year, and though I haven’t gotten to writing about every bit of it, I’ve amassed some great photos of my travels. So here are a few things you’ve already seen, and a preview of a few things yet to come!

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