Proterozoic dikes intruding Archean gneiss, Greenland

basaltic igneous intrusion

Proterozoic dikes intruding Archean gneiss, Greenland

basaltic igneous intrusion

Mt. Baker stratovolcano, Washington

Crater Lake caldera, Oregon

Cascades

Mount St. Helens, Washington

Cascade Range stratovolcanoes

Andesitic dike, New Zealand

dyke, intrusion

Columnar-jointed basalt, Oregon

lava, dwshed, columns, columnar, colonnade

Pegmatite dike in schist (vertical)

Graphic granite

Pegmatite dike cutting schist, Montana

intrusion, intrusive, metamorphic, Archean, precambrian

Purcell sill, Glacier National Park, Montana.

Sill intruding Dolomite of the Helena Formation, Glacier National Park, Montana

igneous, intrusive, intrusion, Precambrian

Garnet Peridotite hand sample

specimen, igneous, intrusive

Granite sill intruding gneiss, Colorado.

igneous, intrusive