Caption: Spotted knapweed (Centaurea biebersteinii) blowing in the wind at Sleeping Bear Dunes overlooking Lake Michigan. 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. While plants like this help stabilize the dunes, this one is an invasive weed that threatens to crowd out native plants. Filmed in Michigan, USA.

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Keywords: american, beach, blown sand, centaurea biebersteinii, dune, flora, geologic, geology, glacial moraine, great lakes, invasive, lake, lake michigan, landscape, michigan, perched, plant, quartz, shore, sleeping bear dunes, spotted knapweed, united states, usa, weed, wind

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Sleeping Bear Dunes

K002/1893 Rights Managed

Downloadable master

Duration: 00:00:11.26

Frame size: 640x480

Frame rate: 29.97

Audio: No

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

File size: 135.0M


Capture format: Betacam SP

Frame size: 720x486

Codec: Uncompressed 8-bit 4:2:2

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