Brian Olson 🥥🌴🗳️

California geologist, earthquake hazard scientist, Christian, frustrated Angels fan, and Oxford comma guy. Peace & Humpty-ness Forever! #SciComm (he/him)

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

Hi, I’m Brian Olson—geologist, earthquake scientist, & SoCal resident. With 25+ years working in engineering geology, I tackle hazards like liquefaction, landslides, & active faults. Expect posts on quakes, geology, travel, Disneyland, & how the Angels break my heart. 🌍🏰⚾

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

@AustinDave_ Those noticable fissures running parallel to the slope contours on the right side of the frame make me wonder if a landslide was involved in this gas leak.

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

@FirePhotoGirl Potato Canyon Road?

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

@AntJKernich Saw that! Did you feel it? Looks like probably the Hayward Fault.

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

Earlier this week, the San Andreas Fault popped off a few M3 quakes. Today the Hayward Fault is trying to get some attention with M3.2 and M3.4 earthquakes. Can we just NOT? #earthquake

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

DAS Bump!

My summary of this morning’s session: “Forecasting Earthquakes with Continuous Data: From Lab to Field”. Sounds like a SCEC German punk band. #scecmeet @SCEC

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

Tom Rockwell (Distinguished Lecture) kicking off the 2025 SCEC meeting! Small offset per event (smaller magnitude) produces narrower damage zone in nearby rocks. Serves as a proxy for avg. magnitude per rupture event. #scecmeet #scec2025 @SCEC

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

Opening presentation of this year’s SCEC annual meeting in Palm Springs! It seems SCEC is a “large Enterprise” working to develop & share cutting-edge earthquake system science to enhance California’s resilience & to educate and inspire future scientists. #scecmeet #SCEC2025

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

@JillianMichaels While slavery was mostly in the South by 1860, the North was not morally separate from it; people can live w/in & uphold unjust systems w/o being individually cruel/violent; After slavery ended, other injustices followed. Slavery began a long pattern of white oppression of Blacks

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

@JillianMichaels This ignores: slavery was legal in ALL 13 original colonies until the early 1800s; “households” owned slaves, only counting male slaveowners is misleading; ignores that the US economic system overwhelmingly provided whites the opportunity to build enough wealth to own slaves.

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

While slavery was mostly in the South by 1860, the North was not morally separate from it; people can live w/in & uphold unjust systems w/o being individually cruel/violent; After slavery ended, other injustices followed. Slavery began a long pattern of white oppression of Blacks

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

The “less than 2%” stat is technically true only under a narrow “national-average” framing that obscures how common slavery was where it existed. Slavery wasn’t the only injustice against Black Americans in US history, and accountability extends far beyond slaveowners.

[Jillian Michaels @JillianMichaels]

I'm denigrating all of humanity by pointing out that 98% of American white people in 1860 didn't perpetrate slavery... and in fact many white Americans died to end it? 🤔

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

This ignores: slavery was legal in ALL 13 original colonies until the early 1800s; “households” owned slaves, only counting male slaveowners is misleading; ignores that the US economic system overwhelmingly provided whites the opportunity to build enough wealth to own slaves.

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

@MarkMittelberg @SoundFaithCo Yet another MANel of apologetics speakers at a conference. Are women not studying apologetics?

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

I was too sleepy last night to check that M3.7 near the San Andreas, but it shows a reverse faulting focal mechanism. Not the SAF, probably associated with the Cleghorn Fault (part of the North Frontal Fault System) that helps squeeze up the San Bernardino Mountains. #earthquake

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

Take it easy now! What is going on here? Two new M3.5s in Ontario (SW of the Rialto sequence) and then a M3.7 to the north near the San Andreas?? Let’s just turn the heat down a little, mkay? #earthquake

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

Good lord...

[Acyn @Acyn]

CNN reporting Trump administration officials are going to meet tomorrow to discuss their handling of the Epstein cases: Sources say that there have been discussions about what Blanche's next step could be, including… doing an interview with someone like Joe Rogan

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

Looking at the @SCEC Community Fault Model, these quakes look like they are along the Lytle Creek strand of the San Jacinto Fault. (I should have checked this map earlier.) #earthquake

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

ANNNNNDDDD we're BACK! The Rialto/Fontana earthquake sequence continues with a M3.5 aftershock this afternoon from Thursday's M4.3 quake. Overall, it still looks like it's on a fault related to the San Jacinto Fault zone (NW-trending). #earthquake

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

@johnhubbs46 Indeed! There's the San Jacinto Fault to the east, the San Andreas a little farther east, the Fontana trend coming in from the southwest, and the Cucamonga Fault to the west at the base of the mountains. A LOT going on in a small space!

[Brian Olson 🥥🌴🗳️ @mrbrianolson]

At first, I thought last week’s M4.3 earthquake near Rialto was linked to the NE-trending Fontana Seismic Lineament. But the aftershocks tell a different story. They outline a NW-trending fault, roughly parallel to the San Jacinto Fault. #earthquake