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Read the rocks around you.
Hold up your phone and Outcrop draws the geologic map onto the land in front of you, each rock unit named.
It works offline too.
Free, for iPhone and Android. Geologic maps worldwide from Macrostrat. Earth’s history Each unit’s page in Outcrop shows where its age falls in Earth’s 4.5 billion years. Cenozoic 66–0 Ma Mesozoic 252–66 Ma Paleozoic 539–252 Ma Precambrian 4540–539 Ma Hover over or tap the line to read a period or an event.
Geologic maps in augmented reality Hold your phone up to a canyon wall, a road cut or a far ridge.
Live draws the geologic map onto the land through your camera in augmented reality, names the unit under the reticle and labels the peaks and lakes in view.
Open a unit’s page and the land keeps it in color, the rest gone grey. Know what’s under your feet.
The map opens on the rock where you’re standing: its name, its age, what it’s made of and how it formed. Tap anywhere else to read that spot instead. Read the rock below.
Pull the page up for the column of rock under the spot, from the surface down, each unit with its age and each gap with the time it leaves out.
Then the fossils found in it.
Tap a unit to read it. See where it formed.
Turn the map into a globe at the rock’s age, drawn from Christopher Scotese’s PALEOMAP maps: where it lay, how far it has come and how fast.
Press play to ride its plate to today.
Find any rock.
Search for a unit, an age, a rock or a fault.
The map lights every place it’s found and tells you how far the nearest is, even when it’s off the screen.
From bedrock to topsoil.
Read the bedrock and its faults anywhere on Earth from Macrostrat’s geologic maps.
Switch to Quaternary geology for the glacial and river deposits on top and the faults that have moved recently. Then the soil and the plants that grow in it.
On the map and in Live. Bedrock and faults worldwide Quaternary, active faults and soil in the US Save it before you go.
Outline the ground you’re headed for.
Its geologic maps and soils are saved on your phone with the terrain Live draws on, its labels and the basemap.
Add satellite imagery if you want it. The map and Live then work with no signal.
Fossil finds and Live’s active faults still need a connection.