File:Sequoia sempervirens (fossil redwood tree trunk) (Sonoma Volcanics, Upper Pliocene, 3.2 to 3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 45 (49092579528).jpg
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[edit]DescriptionSequoia sempervirens (fossil redwood tree trunk) (Sonoma Volcanics, Upper Pliocene, 3.2 to 3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 45 (49092579528).jpg |
Sequoia sempervirens (Don in Lambert, 1824) - quartz- permineralized coast redwood tree trunk in the Pliocene of California, USA. The trees at this locality have also been identified as Sequoia langsdorfii. The Calistoga Petrified Forest has been called the best-anywhere petrified forest of Pliocene age. The fossil wood here is preserved with the most common permineralization mineral - quartz. The preservation of these trees was the result of burial by a rhyolitic volcanic ash-flow tuff of the Sonoma Volcanics (Upper Pliocene). The volcanic tuff was erupted from a vent near modern-day Mt. St. Helena (= north of this locality). This fossil redwood tree is nicknamed "The Monarch" (also known as the "Tunnel Tree") - it has an exposed length of 105 feet and is 6 feet in diameter. Classification: Plantae, Pinophyta, Pinopsida Pinales, Cupressaceae Stratigraphy: Sonoma Volcanics, Upper Pliocene, 3.2 to 3.4 Ma Locality: The Monarch, Calistoga Petrified Forest, northern side of Petrified Forest Road, west-southwest of the town Calistoga, eastern Sonoma County, Coast Ranges of northwest-central California, USA See info. at: <a href="https://en.wikipedia.org/wiki/Petrified_Forest_(California)" rel="noreferrer nofollow">en.wikipedia.org/wiki/Petrified_Forest_(California)</a> |
Date | |
Source | Sequoia sempervirens (fossil redwood tree trunk) (Sonoma Volcanics, Upper Pliocene, 3.2 to 3.4 Ma; Calistoga Petrified Forest, Calistoga, California, USA) 45 |
Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/49092579528 (archive). It was reviewed on 20 November 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
20 November 2019
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current | 05:39, 20 November 2019 | 3,008 × 2,000 (5.46 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Date and time of data generation | 17:38, 13 July 2010 |
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Bits per component |
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Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop Elements 16.0 (Macintosh) |
File change date and time | 21:02, 19 November 2019 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 17:38, 13 July 2010 |
Meaning of each component |
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APEX shutter speed | 7.965784 |
APEX aperture | 6 |
APEX exposure bias | 0 |
Maximum land aperture | 4.1 APEX (f/4.14) |
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Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
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White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 48 mm |
Scene capture type | Standard |
Scene control | None |
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Subject distance range | Unknown |
Serial number of camera | 200638ad |
Lens used | 18.0-200.0 mm f/3.5-5.6 |
Date metadata was last modified | 16:02, 19 November 2019 |
Unique ID of original document | A67595A8AE7FAC3C2E0318F0A085E855 |