Lightnews — Scholar-powered news

Northern California Geological Society @norcalgeolsoc.bsky.social · 4h

Applications are being accepted now for the NCGS 2025-26 Richard Chambers Memorial Scholarship. These $2000 awards go to graduate students to support geological research projects in/near Northern California. More info and application form on the Scholarships page. ncgeolsoc.org/scholarships/

Scholarships

NCGS Richard Chambers Memorial Scholarships Recipients of the Richard Chambers Memorial Scholarship are chosen from graduate-level applicants who submit an application that describes their proposed…

ncgeolsoc.org

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Reposted by Northern California Geological Society

Tim Demko @timdemko.xyz · 6d

After liking this post and reading the linked paper, I was keen to see if I'm missing these features in outcrops. Tooling around some basalt flows along Kona Coast in Hawaii today (Shoreline Park, just west of Kealakekua)...well, yep! Will be keeping my eye peeled for these in older flows in AZ!

$Photo of the an outcrop of dark gray vesicular basalt, exhibiting fracture patterns of two natural explosion structures. The structures look like cavities surrounded by radially-oriented fractures. My sandaled foot is also shown, for scale.$

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Northern California Geological Society @norcalgeolsoc.bsky.social · 15d

Was a lively talk Wednesday by UC Berkeley's Lung Chan on his "natural explosion structures" -- see the paper in J. Struc. Geol. at www.sciencedirect.com/science/arti...

Explosion structure in Cretaceous hydrothermal breccia, Hong Kong, from Chan and Alvarez (2023) https://www.sciencedirect.com/science/article/pii/S0191814123001505

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Northern California Geological Society @norcalgeolsoc.bsky.social · Sep 3

Pioneering engineering geologist J. David Rogers has died. When he lived in the Bay area he contributed to NCGS events.

Dr. J. David Rogers

Dr. J. David Rogers passed away on August 23, 2025, surrounded by his family and prepared to meet his Savior and Lord Jesus Christ. A popular retired Missouri University of

www.phelpscountyfocus.com

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Northern California Geological Society @norcalgeolsoc.bsky.social · Sep 2

September! Our first meeting of the 2025-26 season comes up on the 24th. Why not join us?

Our meeting room in Orinda. Our May meeting, shown here, is traditionally a dinner meeting.

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Reposted by Northern California Geological Society

Christina Toms @christinatoms.bsky.social · Aug 20

THE PLANE THAT’S COLLECTING ALL NEW LOW TIDE LIDAR FOR THE SAN FRANCISCO ESTUARY WETLANDS REGIONAL MONITORING PROGRAM IS IN THE AIR!!!

screenshot from FlightAware showing the NV5 Geospatial plane in the air over the southern Delta

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Northern California Geological Society @norcalgeolsoc.bsky.social · Aug 20

David Shiffman, Ph.D. 🦈 @whysharksmatter.bsky.social · Aug 19

Hey everybody! @drjuliawester.bsky.social and I have a new paper!

We surveyed over 800 scientists, science communicators, and science educators who use social media.

Conclusion: Scientists no longer find Twitter useful or pleasant, and many have switched to Bluesky! 🧪🌎🦑

doi.org/10.1093/icb/...

Scientists no Longer Find Twitter Professionally Useful, and have Switched to Bluesky

Synopsis. Social media has become widely used by the scientific community for a variety of professional uses, including networking and public outreach. For

doi.org

Reposted by Northern California Geological Society

Meade Krosby @meadekrosby.bsky.social · Jul 19

This is horrifying and yet another reminder of why we can't abandon fossil fuels quickly enough.

The Elwha River is a triumph of restoration, with salmon returning after over a century's absence since major dam removals 12 years ago. The spill is on a tributary 1.5 miles from the river's main stem.

Conrad Swanson @conradswanson.bsky.social · Jul 19

A fuel tanker crashed off Highway 101 on Friday and began leaking fuel into a major tributary for salmon, trout and the water supply for Port Angeles. It's a pretty devastating spill.

From @isabellabreda.bsky.social and me: www.seattletimes.com/seattle-news...

Tanker crashes, spills fuel into Elwha tributary near Port Angeles

A fuel tanker truck went off Highway 101 into Indian Creek, a tributary of the Elwha River, on Friday morning.

www.seattletimes.com

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Northern California Geological Society @norcalgeolsoc.bsky.social · Jul 8

NCGS member Gary Prost has a book coming out!

Book cover and blurb from @geology: "To fans of geology, California is a golden state. Follow a trial of buggets across it with Gary Prost's treasure map."

QR code to pre-order the book, discount code TIMEANDPRESSURE gets you %20 off the cover price.

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Northern California Geological Society @norcalgeolsoc.bsky.social · Jul 7

NCGS member and webmaster

Andrew Alden @geology.bsky.social · Jul 7

New blog post: The Concord fault isn't where we thought.

Concord fault update 2025

When I wrote about the Concord fault last year, I showed places where the fault is easy to see by the way it pulls apart street curbs and makes cracks in paved areas. I stayed in the northern part …

oaklandgeology.com

Reposted by Northern California Geological Society

Dr. Wendy Bohon @drwendyrocks.bsky.social · Jul 7

Great new open access paper - “Newly Identified Creeping Strand of the Concord Fault, San Francisco Bay Area”.

I was able to go check out the area with the authors last summer. Super neat!

Link - pubs.geoscienceworld.org/ssa/srl/arti...

A different curb shows the same amount and direction of displacement.

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Northern California Geological Society @norcalgeolsoc.bsky.social · Jun 24

In Harpers, a well-sourced (Lyell and Darwin) meditation on geological deep time vs human time. archive.ph/lpruL

archive.ph

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Northern California Geological Society @norcalgeolsoc.bsky.social · Jun 19

Our 2009 Gold Country field trip passed the rock shop west of Mariposa, where the field trip leader said he'd found a small gold nugget in the roadcut to the east. A recent visitor found no gold but lots of beautiful rocks. ncgeolsoc.org/past-field-t...

Slate of the Mariposa Formation features relict sedimentary structures plus crosscutting quartz veins, neither visible at this spot along Hwy 140.

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Northern California Geological Society @norcalgeolsoc.bsky.social · Jun 12

Our June speaker, from the FORGE geothermal project in Utah, will give us lots of background on the exciting developments in this thread.

Jay Turner @jayturner.bsky.social · Jun 11

What does the future of enhanced geothermal power generation look like?

Fervo offered an update to partners and investors at its #capeconnect event today, showcasing progress on its 100MW Cape Station project in UT.

I tagged along and I learned a lot. Some highlights based on my notes follow… 🔌💡

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Reposted by Northern California Geological Society

Data Pointed @datapointed.bsky.social · Jun 11

www.youtube.com/watch?v=Bqmp...

[V3cam] Kīlauea volcano, Hawaii (south Halemaʻumaʻu crater)

YouTube video by USGS

www.youtube.com

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Northern California Geological Society @norcalgeolsoc.bsky.social · Jun 12

See our fall lineup of speakers at ncgeolsoc.org

From Sept to Nov we'll learn about a new kind of explosion structure, what sea-level rise means for groundwater, and what an odd quake in 1954 looks like from today's science.

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Northern California Geological Society @norcalgeolsoc.bsky.social · Jun 11

Just added to our Past Field Trips page is David Howell's handout for our 2016 trip to two premium wine destinations in the Napa Valley with notable geology. ncgeolsoc.org/past-field-t...

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Northern California Geological Society @norcalgeolsoc.bsky.social · May 29

Our May Speaker, Walter Alvarez, gave a lucid personal picture of his wild surmise that a Pliocene inland sea once occupied the middle of the Sahara. He published a drier version <2 years ago in this open-access paper.

An enormous Pliocene or Quaternary Megalake Sudd on the River Nile in the Sudan Basin? A review of the dilemma, and a possible solution

It was first suggested in 1864 that a very large post-Miocene lake once occupied the Sudan Basin, centered on the Sudd — a nearly impenetrable papyrus…

www.sciencedirect.com

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Northern California Geological Society @norcalgeolsoc.bsky.social · May 29

NCGS member Gary Prost‘s new book, Rocks and Riches, introducing selected California geology sites everyone should visit, will be released by Heyday Books on July 22nd. Pre-order it here.

Rocks and Riches: Exploring California’s Stunning Geology

Take a road trip through deep time and California history, with a friendly expert geologist at the wheel.

www.heydaybooks.com

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Northern California Geological Society @norcalgeolsoc.bsky.social · May 28

Mining geologist wanted for a big Zn-Au-Ag-Cu project near Mariposa! details in the alt text.

Blue Moon Metals seeks a Senior Exploration Geologist for its Blue Moon Project in Mariposa, California.

Experience: Minimum 7 years as an exploration geoscientist

Responsibilities:
- Oversee exploration activities including geologic mapping, geochemical sampling programs, QA/QC procedures and diamond drilling
- Promote and enforce Blue Moon Metals' Cultural, Safety, and Environmental policies and guidelines
- Plan, supervise, execute, interpret, and model underground and surface near-mine, district, and regional exploration targets
- Interpret geophysics and propose additional surveys (considered a merit)
- Participate in and manage geological, technical, and digital resources for the exploration team
- Implement sample and assay quality control measures
- Lead the daily management functions of exploration and junior geologists to achieve best practices and provide direct reporting to the VP Exploration
- Train and develop staff to ensure consistent and accurate mineral exploration techniques, practices, and procedures
- Act as a technical specialist in geological interpretation, 3D modelling, GIS, and mineralization visualization.
- Experience in V(H)MS exploration models is required

Minimum Qualifications

- Bachelor's degree in Geology.
- Master's degree in Ore Geology considered a merit
- Proficient in Leapfrog Geo, QGIS, ioGAS, and MS Office
- Ability to work openly and positively with others, fostering a collaborative environment
- Ability to build trust through honesty, transparency, and a selfless approach to teamwork
- Demonstrated ability to operate with a high degree of autonomy, stay organized, and effectively manage data in a dynamic work environment
- Demonstrated ability to supervise drilling, assay laboratories, down-hole surveys, geophysical and geochemical surveys, mapping, logging, and other contractors
- Practical application of QA/QC for drilling, sampling, assay, resource modelling, and estimation

Contact theo@bluemoonmetals.com

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Northern California Geological Society @norcalgeolsoc.bsky.social · May 13

Yes you did. Exposures down by the river are excellent.

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Northern California Geological Society @norcalgeolsoc.bsky.social · May 13

Don't miss this video of the M 7.8 Myanmar earthquake as it moved the ground several meters at once.

First fault rupture ever filmed: M7.9 surface rupture filmed near Thazi, Myanmar

YouTube video by 2025 Sagaing Earthquake Archive

www.youtube.com

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Northern California Geological Society @norcalgeolsoc.bsky.social · May 10

ncgs.regfox.com/ncgs-dinner-...

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Northern California Geological Society @norcalgeolsoc.bsky.social · Apr 22

We're taking reservations for our May 28 dinner meeting featuring UC Berkeley's Walter Alvarez, who will recount an excellent story of discovering (or rediscovering) an ancient giant lake where the Sahara Desert lies today, its traces still visible in the landscape. ncgs.regfox.com/ncgs-dinner-...

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Northern California Geological Society @norcalgeolsoc.bsky.social · Apr 11

Our website has pictures now in the home page News section. This is one of our latest scholarship winners, whose poster presented last week at the GSA Cordilleran Section meeting acknowledged NCGS.

UC Davis grad student Ryan Lynch stands by his poster "Active Faulting in the Klamath Mountains Revealed by Lidar Data," a research project NCGS supported with a $2000 Richard Chambers Memorial Scholarship this year to underwrite more fieldwork and sample collecting.

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