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Journal Article
Journal: Geology
Published: 29 June 2017
Geology (2017) 45 (9): 783-786.
... the serendipitous discovery of subfossil trees on Iceland, this study encourages the search for more such material buried under tephra beds and jökulhlaup sediments. More relict wood will contribute to the precise calendar dating of additional Icelandic eruptions, as well as archaeological sites ( Dee and Pope...
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Journal Article
Journal: Geology
Published: 01 June 2017
Geology (2017) 45 (6): 499-502.
...S.L Rathburn; G.L. Bennett; E.E. Wohl; C. Briles; B. McElroy; N. Sutfin Abstract Identifying and quantifying the dominant processes of erosion and tracking the fate of sediment, wood, and carbon eroded during floods is important for understanding channel response to floods, downstream sediment...
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Journal Article
Journal: Geology
Published: 01 May 2017
Geology (2017) 45 (5): 447-450.
... intraring δ 13 C analyses on fossil wood collected from the late Miocene Khapchansky sediments of northeastern Siberia (∼69°N). From these data we quantified the ratio of summer to winter precipitation (P s /P w ) and compared it to current values for the region determined from modern wood samples...
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Journal Article
Journal: Geosphere
Published: 01 October 2016
Geosphere (2016) 12 (5): 1594-1605.
... utility of carbon-isotope stratigraphies. Isotopic analysis of fossil wood fragments (from the Rurikfjellet, Helvetiafjellet, and Carolinefjellet formations, Festningen, Spitsbergen) record a distinctive pattern including a negative isotope excursion preceding a positive event, correlatable...
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Journal Article
Published: 02 September 2016
Canadian Journal of Earth Sciences (2016) 54 (1): 76-87.
... contiguous wood mats deposited on paleosols. Dendroglaciological and radiocarbon dating of these wood remains show that Frank Mackie Glacier expanded into standing forests at 3710–3300, 2700–2200, 1700–1290, 900–500, and 250–100 cal. years BP. These advances coincide closely in time with the previously...
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Journal Article
Published: 01 March 2016
Vadose Zone Journal (2016) 15 (3): vzj2015.04.0061.
... the volumetric water content (e.g., Topp et al., 1980 ). All types of dielectric moisture sensors output an electrical signal that varies depending on the apparent dielectric permittivity of the sensing volume of porous materials. Because wood is also a porous material, dielectric moisture sensors have...
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Journal Article
Journal: Palynology
Published: 01 November 2015
Palynology (2015) 39 (3): 410-433.
... scheme to apply when counting these fragments can be confusing, and application of these schemes can yield inconclusive results, especially when sedimentation and energy are in constant flux. A scheme of five categories, including brown wood (palynomaceral 1–2), leaf cuticle (palynomaceral 3), black...
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Journal Article
Published: 01 January 2014
Journal of Sedimentary Research (2014) 84 (1): 19-25.
.... Alternatively, the anomalously large amount of undecomposed wood in the Beaufort Formation may reflect a genuine peak in preserved polar woody debris in the Pliocene, potentially reflecting a marked contrast in decomposition when compared to polar forests from exceptionally warm intervals (e.g., of the Eocene...
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Journal Article
Published: 05 December 2012
Canadian Journal of Earth Sciences (2012) 50 (4): 483-493.
..., the logs touching and piled upon each other, we interpret this to indicate that these trees were toppled simultaneously. Supporting evidence includes the prone position of the logs, most of which occur in one layer, as well as the lack of wood and logs in the overlying sediment (except for wood at 36 cm...
Journal Article
Published: 12 April 2012
Canadian Journal of Earth Sciences (2012) 49 (5): 671-680.
..., New York, USA. The fossils included substantial wood fragments, associated plant remains, and pollen, which indicate a forest of white spruce ( Picea glauca ), balsam fir ( Abies balsamea ), and tamarack ( Larix laricina ). The presence of white, rather than black ( P. mariana ) or red ( P. rubens...
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Journal Article
Published: 20 July 2011
Canadian Journal of Earth Sciences (2011) 48 (7): 1185-1198.
... Management 2003 ). In the study area, there are only episodic accounts of major events, such as the grounding of the fully loaded log barge “Forest Prince” on Wickaninnish Beach in 1968. The barge was eventually removed by tugboat and the amount of wood that remained on the beach, although never recorded...
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Journal Article
Journal: Geology
Published: 01 June 2011
Geology (2011) 39 (6): 587-590.
...Ellen Wohl Abstract The geomorphic complexity of streams influences the residence time of carbon by creating storage sites for organic matter. Instream wood increases complexity, particularly where logjams initiate multithread channels, as documented previously for lowland alluvial channels...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 2011
GSA Bulletin (2011) 123 (5-6): 958-978.
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Journal Article
Journal: Geology
Published: 01 June 2010
Geology (2010) 38 (6): 523-526.
... radiocarbon dates on terrestrial wood and charcoal fragments. Our results indicate that in the absence of large human populations and extensive farming activities, Petén forests recovered under humid climate conditions within a span of 80–260 yr. Soil stabilization postdates pollen evidence of forest regrowth...
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Journal Article
Journal: Lithosphere
Published: 01 June 2010
Lithosphere (2010) 2 (3): 139-152.
... superseded by I-2b drainage. A wood sample from the outside of stump B3 yielded an age of 332 ± 25 yr B.P. (302–447 cal. yr B.P. at 2σ) ( Table 1 ). On aerial photographs, surface I-2c is characterized by a smooth geomorphic texture lacking in distinct channels. This texture is typical of surfaces covered...
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Journal Article
Published: 01 December 2009
Journal of the Geological Society (2009) 166 (6): 989-997.
... seasons. Healing resins then flowed through the carbonized tracheids and into broader fissures within the carbonized wood. These coniferous resins also exuded into the outer spaces of tree bark and even tree root systems, where they were able to entrap silk webs formed by spiders. The resins likewise...
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Journal Article
Journal: GSA Bulletin
Published: 01 January 2009
GSA Bulletin (2009) 121 (1-2): 294-320.
... remains, pollen, tree-ring characteristics, and δ 13 C values of spruce wood, demonstrate that the boreal forest represented by the Dawson Cut Forest Bed was similar to the modern boreal forest of central Alaska. Warming conditions during the early part of the Dawson Cut Interglaciation initiated thawing...
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Journal Article
Journal: Paleobiology
Published: 01 August 2008
Paleobiology (2008) 34 (3): 389-402.
...Natalia Rybczynski Abstract An early Pliocene fossil locality in the Canadian High Arctic preserves the remains of the extinct beaver Dipoides sp. (Castoridae, Rodentia) in association with an assemblage of fossil beaver-cut wood. The wood assemblage presents a first opportunity to investigate...
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Journal Article
Published: 01 April 2008
European Journal of Mineralogy (2008) 20 (2): 217-231.
.... Figures 4G and H show a part of Dadoxylon wood (#14) with an interesting, irregularly spaced colour contrast in PPL and CL. Two kinds of pigmentation have been recognized among former secondary xylem: yellowish brown under the optical microscope, Fe 3+ pigmented areas with obvious accumulations...
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Journal Article
Published: 08 February 2008
Canadian Journal of Earth Sciences (2008) 45 (1): 83-98.
... core samples from living trees ( Abies lasiocarpa, Tsuga mertensiana ) and samples of subfossil wood collected in the Todd Icefield area, Boundary Ranges, British Columbia Coast Mountains, provide the basis for a dendroglaciological and radiocarbon-based reconstruction of late Holocene glacier activity...
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