Explore Map Collection

Check out our basemaps

Print a Map Plus

Generate a high-quality PDF

Discover local flora, fauna, geology, and more

Local Flora & Fauna

Learn the ecology of your area

Learn the geologic formation at your feet

Get Started or Sign In

Welcome

Sign up to start exploring the one-of-a-kind Natural Atlas Topo map

Continue with Apple

Or

Already have an account? Sign In

Rock Formations

Measure

Copyright © Natural Atlas | Roads, Buildings © OSM Contributors | Data Sources

Topo

Ecoregions

Public Lands

...

BASEMAPS

Default Weather

Temperature

Smoke

...

WEATHER

Ultramafic rocks, chiefly Mesozoic, unit 3 (Coast Ranges and Western Klamath Mountains) (CAum3;0)

Geologic Formation in CA, OR

Generate High-Quality PDF

Lithology

Geologic Age

Middle Jurassic – Late Jurassic (175.1 Ma – 145 Ma ago)

Geologic Unit Label

Um3

Ultramafic rocks, mostly serpentine. Minor peridotite, gabbro, and diabase. Chiefly Mesozoic unit 3

— USGS

Aster Fossil Asteraceae (family), “Compositae”

Mustard Fossil Brassicaceae (family), “Crucifers”, “Mustards”, “Mustard Family”, “Cruciferae”, “The Cabbage Family”, “Cabbage Family”

Exiteloceras GENUS

Asterales ORDER

Taxonomy

Geographic Places

Geological Feature

Geologic Formation

Classified As

Geologic Formation

Ultramafic rocks, chiefly Mesozoic, unit 3 (Coast Ranges and Western Klamath Mountains) (CAum3;0)

Ultramafic rocks, chiefly Mesozoic, unit 3 (Coast Ranges and Western Klamath Mountains) (CAum3;0)

Ultramafic rocks, chiefly Mesozoic, unit 3 (Coast Ranges and Western Klamath Mountains) (CAum3;0)