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Lassics

Lassics, June 23, 2018

2020-02-13
By: isf_admin1
On: February 13, 2020
In: ISF Events
With: 0 Comments

Lassics, June 23, 2018

The distinctive humps of the Lassics peaks can be seen from some distance around Southern Humboldt. They are good representatives of the confused geology of northwest California, where many types of rock have been jumbled together by tectonic forces. Conical Black Lassic is often mistaken for a volcano, but is actually marine sedimentary rock; Mount Lassic was formed from a different mix of sedimetary rock; Red Lassic has material from a deep ocean trench. We looked at a possible glacial basin from the last ice age, and a recent wildfire.

Geologist Tim Bailey discussing serpentinite rock.
Geologist Tim Bailey discussing serpentinite rock.
The Lassics lupine, Lupins constancei
The Lassics lupine, Lupins constancei, known only from the Lassics, a rare plant adapted to difficult soils.
Mount Lassic
On top of Mount Lassic, looking west toward Salmon Creek and the King Range. The monument was built by an early survey team based there.

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