Browse Map

Explore away

Explore Map Collection

Check out our basemaps

Print a Map Plus

Generate a high-quality PDF

Field Guide

Discover local flora, fauna, geology, and more

Local Flora & Fauna

Learn the ecology of your area

Local Geology

Learn the geologic formation at your feet

Get Started or Sign In

Welcome

Continue with Apple

Already have an account? Sign In

MAP

Topo

Measure

Topo

Ecoregions

Public Lands

...

BASEMAPS

Default Weather

Temperature

Smoke

...

WEATHER

Rattlesnake-Blackfoot-South Swan-Northern Garnet-Sapphire Mountains

Ecoregion in Rocky Mountains, MT

Print Map

Generate High-Quality PDF

The Rattlesnake-Blackfoot-South Swan-Northern Garnet-Sapphire Mountains ecoregion is forested and lies west of the Continental Divide. Ecoregion 17x is underlain primarily by a heterogeneous mixture of Precambrian Belt formations but Tertiary-Cretaceous igneous rocks also occur. Overall, it is lithologically distinct from the Eastern Pioneer Sedimentary Mountains (17ah), Southern Garnet Sedimentary-Volcanic Mountains (17al), and the mixed rock of the neighboring Flint Creek-Anaconda Mountains (17am). The climax vegetation is mapped as subalpine fir, Douglas-fir, and ponderosa pine forests and is distinct from Ecoregions 15a, 17aj, 17am, 17p, and 41. The forests of Ecoregion 17x tend to be drier than the ecoregions to the northwest and west but are wetter than those to the east of the Continental Divide. They are used for logging and recreation.

— EPA

Taxonomy

Classified As

Ecoregion