Home
Map
Browse Map
Explore away
Explore Map Collection
Check out our basemaps
Print a Map
Plus
Generate a high-quality PDF
Field Guide
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
Start Free Trial to View Full Rhyolite Map
Waterfalls
Rock Formations
Campgrounds
Trails
Boat Launches
National Parks
State Parks
Scenic Spots
Measure
You must upgrade to measure routes
Start Free Trial
0 ft
Max
0 ft
Copyright
© Natural Atlas
| Roads, Buildings
© OSM Contributors
|
Data Sources
Topo
Ecoregions
Public Lands
...
BASEMAPS
Default Weather
Temperature
Smoke
...
WEATHER
View All Photos
Rhyolite
On the Web
On Wikipedia
Rhyolite ( RY-ə-lyte) is the most silica-rich of volcanic rocks. It is generally glassy or fine-grained (aphanitic) in texture, but may be porphyritic, containing larger mineral crystals (phenocrysts) in an otherwise fine-grained rock. The mineral assemblage is predominantly quartz, sanidine and plagioclase. It is the extrusive equivalent to granite. Magma with the composition of rhyolite is extremely viscous, due to its high silica content. This favors explosive eruptions over effusive eruptions, so rhyolitic magma is more often erupted as pyroclastic rock than as lava flows. Rhyolitic ash-flow tuffs are among the most voluminous of continental igneous rock formations. Rhyolitic tuff has been extensively used for construction. Obsidian, which is rhyolitic volcanic glass, has been used for…
Read More on Wikipedia
Your Checklist
You have noted
0
Rhyolite
Learn How to Take A Field Note
Range Map
Range Maps show
field notes recorded by Natural Atlas contributors
and other datasets via
GBIF.org
Your Notes
Join Natural Atlas to keep track of the
Rhyolite
you see on your outings.
Join Natural Atlas
Already have an account?
Sign In
Top Observers
Rhyolite
Rhyolite
Rhyolite
Search
Search the outdoors
Map
Plans
Field Guide
Community
My Profile
My Trips
0
My Field Notes
0
Notifications
More