Credit: PETER MATULAVICH/SCIENCE PHOTO LIBRARY

Caption: Marram grass (Ammophila breviligulata) blows in the wind at Sleeping Bear Dunes in Michigan. This grass is able to withstand the arid conditions found in dune sand and helps stablize the dunes. The dunes are formed by sand that is blown atop glacial moraines, and are referred to as perched sand dunes. Much of the sand is composed of uniform quartz particles that are blown from the adjacent lakeshore and highlands.

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Keywords: ammophila breviligulata, beach, blown sand, dune, flora, geologic, geology, great lakes, lake, lake michigan, landscape, marram grass, michigan, perched, plant, shore, sleeping bear dunes, stabilize, usa, wind

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Sleeping Bear Dunes

K002/2079 Rights Managed

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Duration: 00:00:09.16

Frame size: 640x480

Frame rate: 29.97

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 117.5M

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Capture format: Betacam SP

Frame size: 720x486

Codec: Uncompressed 8-bit 4:2:2

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