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B-Roll w/narration - Within the tunnel, the ice wedges are no longer actively growing. These ice wedges are syngenetic ice wedges and are truncated in many places, with an occasional new ice wedge growing right out of the top of the truncated ice wedge. There is also evidence of two distinct sets of ice wedges, with the first and lower set ranging in age of about 25,000 to 33,000 years. The second and upper set ranges in age of 10,000 to 14,000 years. In between the two sets is thought to be a climate change event. One of the ice wedges is dated from viable living bacteria that was collected and dated to be 25,000 years old.
| Date Taken: | 11.02.2017 |
| Date Posted: | 02.14.2018 08:36 |
| Category: | B-Roll |
| Video ID: | 584575 |
| VIRIN: | 171002-A-ND890-003 |
| Filename: | DOD_105315400 |
| Length: | 00:01:15 |
| Location: | FOX, ALASKA, US |
| Downloads: | 9 |
| High-Res. Downloads: | 9 |
This work, Ice Wedges - Permafrost Tunnel Research Facility, by David Gray, identified by DVIDS, must comply with the restrictions shown on https://www.dvidshub.net/about/copyright.
