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Photo ID: h0wn0fSubject: GlaciersDescription
Bedding Plane Irregularities; Erosion; Glacial Features; Glacier National Park; Grooves; Sperry Glacier; StriationsGlacial striations on bedrock. Rocks embedded in the bottom of the glacier served as "tools" that scratched the bedrock over which the glacier moved. These features are useful indicators both of the former presence of glaciers and of the direction in which the glacier moved.
PhotographerLocation
USGS

Credit Line: Courtesy United States Geological Survey		North America; United States; Montana; Glacier National Park
Photo Quality | Large 

Photo ID: h0x53pSubject: GlaciersDescription
Bedding Plane Irregularity; Erosion; Glacial Features; Glacial Geology; Glaciation; Grooves; Precambrian; Sedimentary Structures; Slickenlines; StriationsPrecambrian glacially striated rocks in Duluth Minnesota.

View Geological Time Scale for this image.

PhotographerLocation
Bruce Molnia

Credit Line: Copyright © Bruce Molnia, Terra Photographics		North America; United States; Minnesota
Photo Quality | LargeAvailable for Commercial Use

Photo ID: h2a7qzSubject: StructureDescription
Bedding Plane Irregularities; Cleavage; Fissures; Fractures; Glacial Features; Glacial Geology; Grooves; Jointing; Joints; Slickenlines; Striations; Structural Analysis; Structural GeologyJoints and glacial straitions in igneous rock.
PhotographerLocation
Bruce Molnia

Credit Line: Copyright © Bruce Molnia, Terra Photographics		North America; United States; California; Yosemite National Park
Photo Quality | LargeAvailable for Commercial Use

Photo ID: hdedngSubject: GlaciersDescription
Bedding Plane Irregularities; Cryology; Geomorphology; Glacial Erosion; Glacial Geology; Grooves; Hydrology; Ice Movement; Lineation; Polish; Slickenlines; Slickensides; Snow; Striations; Surface ProcessesGlacial striations seen on a rock in the Cascades.
PhotographerLocation
Marli Miller

Credit Line: Copyright © Marli Miller, University of Oregon		North America; United States; Washington; Cascade Mountains
Photo Quality | LargeAvailable for Commercial Use

Photo ID: hdedzsSubject: GlaciersDescription
Bedding Plane Irregularities; Cryology; Geomorphology; Glacial Erosion; Glacial Geology; Grooves; Hydrology; Ice Movement; Lineation; Polish; Slickenlines; Slickensides; Snow; Striations; Surface ProcessesGlacial polish and striations.
PhotographerLocation
Marli Miller

Credit Line: Copyright © Marli Miller, University of Oregon		North America; United States; California; Yosemite National Park
Photo Quality | LargeAvailable for Commercial Use

Photo ID: hdee9aSubject: GlaciersDescription
Bedding Plane Irregularities; Cryology; Geomorphology; Glacial Erosion; Glacial Geology; Grooves; Hydrology; Ice Movement; Lineation; Polish; Slickenlines; Slickensides; Snow; Striations; Surface ProcessesGlacial striations and glacier in Switzerland.
PhotographerLocation
Marli Miller

Credit Line: Copyright © Marli Miller, University of Oregon		Europe; Switzerland; Grindelwald
Photo Quality | LargeAvailable for Commercial Use

Photo ID: hdeetoSubject: GlaciersDescription
Bedding Plane Irregularities; Cryology; Geomorphology; Glacial Erosion; Glacial Geology; Grooves; Ice Movement; Lineation; Polish; Slickenlines; Slickensides; Striations; Surface ProcessesGlacial striations on a rock.
PhotographerLocation
Marli Miller

Credit Line: Copyright © Marli Miller, University of Oregon		North America
Photo Quality | LargeAvailable for Commercial Use

Photo ID: hdenieSubject: StructureDescription
Faults; Grooves; Lineation; Slickenlines; Striations; Structural AnalysisSlickenside on a rock.
PhotographerLocation
John Ballard

Credit Line: Copyright © John Ballard		North America; United States; Pennsylvania
Photo Quality | LargeAvailable for Commercial Use

Photo ID: hfltsfSubject: GlaciersDescription
Basalts; Glacial Features; Glacial Geology; Grooves; Precambrian; StriationsThe passing of a glacier has left these "chatter marks" in the Precambrian basalt bedrock at Duluth, Minnesota.

View Geological Time Scale for this image.

PhotographerLocation
Bruce Molnia

Credit Line: Copyright © Bruce Molnia, Terra Photographics		North America; United States; Minnesota
Photo Quality | LargeAvailable for Commercial Use

Photo ID: hfyw5tSubject: StructureDescription
Bedding Plane Irregularities; Bedding Plane Irregularities; Calcite; Calcite; Elongate Minerals; Elongate Minerals; Fault Planes; Fault Planes; Faults; Faults; Grooves; Grooves; Lineaments; Lineaments; Lineations; Lineations; Minerals; Minerals; Orientation; Orientation; Plate Tectonics; Plate Tectonics; Polishing; Polishing; Preferred Orientation; Preferred Orientation; Slickensides; Slickensides; Striations; Striations; Structural Analysis; Structural Analysis; Structural Geology; Structural Geology; Tectonics; TectonicsCalcite slickenlines on a fault surface. Slickensides are a polished and striated surface that forms along a rock surface as a result of friction along a fault plane.
PhotographerLocation
Marli Miller

Credit Line: Copyright © Marli Miller, University of Oregon		North America
Photo Quality | LargeAvailable for Commercial Use

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