Santorini
ShiprockDiscover
A featured volcano every day, unusual places, stories in the rock, and browsing by region or by age of the last eruption.
Volcano atlas for iPhone & iPad
SilentMantle
The hidden history of Earth's sleeping fires. Thirty illustrated volcano records, a cross section you can tap apart, and a ribbon that runs back to the Carboniferous.
Download on theApp Store
Free · iPhone & iPad
- 30Volcano records
- 9World regions
- 12Geology articles
- 8Rock & mineral specimens
- OfflineAtlas map needs no signal
Geology
Tap a volcano apart.
The app's anatomy board is a real cross section: plume, crater, layered cone, conduit, dike, sill, chamber and host rock. Tap a number to read what each part does, and drag the magma up from the chamber to the vent.
PART 7 OF 8
The catalog
Thirty sleeping giants.
Search, sort and filter the same records the app ships with, from Fuji's silent cone to Shiprock's bare volcanic neck. Open any card for the story, the landscape and how its status was set.
Deep time
Ride the ribbon back.
The Archive's time ribbon runs from the Holocene to the Carboniferous. Pick an epoch to see which volcanoes in the atlas last erupted then, and which vast lava provinces belong to it.
◀ Today359 million years ago ▶
What's inside
One atlas, five rooms.
Everything is written for curious people, not specialists, and the whole archive travels with you on the device.
Volcanoes
Search by country, name, type or status. Sort by height or longest quiet, switch metres to feet, and open a full record with its eruption history.
Compare bench
Put up to four volcanoes side by side and see how height, age, type and last activity stack up.
Earth Map
Pins and filters on an offline Atlas of coastlines, or on Apple's satellite imagery when you have a connection.
Geology
The interactive cross section, a cabinet of eight rocks and minerals, and twelve short articles from plate tectonics to reading ash layers.
Your archive
Favourites, notes, places you care about and your reading history, all kept on your device. Export notes as text or erase everything in one tap.
Specimen cabinet
Hold the rock in your head.
Basalt, obsidian, pumice, tuff and more, each with a short note on where to find it.
Quiet is not safe.
A dormant volcano can erupt again. SilentMantle is made for learning. It is not a hazard map or a safety notice, and its Active, Dormant and Extinct labels are working labels explained on every record.
For safety and travel decisions, follow local authorities and the national monitoring agency.
Contact
Found a fault line?
Spotted a wrong height, want a volcano added, or just have a question? Write to us.
mail@jokerslide.click
Wake the mantle.
Thirty volcanoes, one cross section and 360 million years of fire. Free on the App Store.