Andrew Alden

Writer and Blogger, Freelance

Environment, Science

As seen in: Bad Deck Breakdowns, ThoughtCo, KQED, KQED-FM, Bay Nature Magazine, BizTimes Milwaukee, Violent Delights

Geology writer, science omnivore. Feedspot's #1 geology blog. "Deep Oakland" book comes out 2 May 2023. On a round Earth, every place is at the center. He/him

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Montclair spur

Mar 06, 2023 |

By Andrew Alden

| oaklandgeology.com

One of my little geological fetishes is a geographic one: circumambulations. Thanks to the Hayward fault, Oakland has acquired several wineglass valleys, with very narrow mouths and wide headwaters. I’ve pioneered hikes that circle three of them: Claremont Canyon, Temescal Canyon and Shepherd Canyon. These are strenuous outings, and I’m getting less and less young. This year I hope to resume them, but it will take some working up to.

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Lake Chabot Quarry, San Leandro

Feb 20, 2023 |

By Andrew Alden

| oaklandgeology.com

You’ve all seen this quarry, looming over Lake Chabot Road and eating its way into Fairmont Ridge. It has a long history, and like all abandoned quarries it has a long afterlife ahead. Seen from south Dunsmuir RidgeThe ridge was first opened up in 1886 by the Stone brothers, Egbert and Andrew, whose father Lysander made his fortune from the rich soil of the area now known as the Stonehurst neighborhood.

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Lake Chabot Quarry, San Leandro

Feb 19, 2023 |

By Andrew Alden

| oaklandgeology.com

You’ve all seen this quarry, looming over Lake Chabot Road and eating its way into Fairmont Ridge. It has a long history, and like all abandoned quarries it has a long afterlife ahead. Seen from south Dunsmuir RidgeThe ridge was first opened up in 1886 by the Stone brothers, Egbert and Andrew, whose father Lysander made his fortune from the rich soil of the area now known as the Stonehurst neighborhood.

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@aboutgeology — 7,090 followers, 18,672 tweets

Andrew Alden

@aboutgeology

Mar 07, 2023

The '33 Long Beach quake startled California into enacting the Field Act, to strengthen schools, in just four weeks. Scientists were poised and ready to make that push in the legislature. I admire that. https://cal170.library.ca.gov/march-10-1933-the-children-are-spared-the-field-act-is-born/ …

Andrew Alden

@aboutgeology

Mar 07, 2023

". . . the whole presents a machine of a peculiar construction by which it is adapted to a particular end."

Andrew Alden

@aboutgeology

Mar 07, 2023

@phaneritic But the original is still the greatest

Andrew Alden

@aboutgeology

Mar 06, 2023

I do think an AI wrote that

Andrew Alden

@aboutgeology

Mar 06, 2023

RT @GabeFilippelli: The end of the @TheJR era, marked by great discoveries about the Earth and oceans, its structure, its changing clim… https://t.co/jsbpgqzoWh