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Journal Article
Journal: AAPG Bulletin
Published: 01 June 2018
AAPG Bulletin (2018) 102 (6): 1141-1168.
... chronostratigraphic framework reveals inaccuracies in picking lithostratigraphic units based on lithology and wire-line log characteristics and shows coal-bearing facies of the Walloon Coal Measures to be two episodes of coal (peat) accumulation separated by an unconformity. The study also demonstrates...
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Journal Article
Journal: Geology
Published: 02 October 2017
Geology (2017) 45 (11): 1031-1034.
... a fundamental gap in our understanding of Asian climate. Here we reconstruct continental air temperatures for northeast China across the last deglaciation (past 16 k.y.), based on the distribution of bacterial branched glycerol dialkyl glycerol tetraethers in a sequence of the Hani peat (Jilin Province...
FIGURES
Series: Geological Society, London, Special Publications
Published: 01 January 2016
DOI: 10.1144/SP434.4
EISBN: 9781862391581
... Abstract A siliceous permineralized peat block recovered from Hopen in the Svalbard archipelago hosts a low-diversity Late Triassic flora dominated by autochthonous roots and stems of bennettitaleans and lycophytes, and parautochthonous leaves, sporangia, spores and pollen from a small range...
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Series: SEPM Special Publication
Published: 01 January 2016
DOI: 10.2110/sepmsp.106.08
EISBN: 9781565763432
... the fluvial architecture of two IVFs in the lower Blackhawk Formation (Upper Cretaceous) of the Western Interior Seaway, Utah. Contrary to conventional interpretation, our analyses demonstrate that an autogenic signal linked to differential compaction of coal-precursor peats underlying IVFs likely exerted...
Series: GSA Reviews in Engineering Geology
Published: 01 January 2008
DOI: 10.1130/2008.4020(09)
EISBN: 9780813758206
... of Seattle datum. The Mercer Slough channel (MS) and Lake Washington Boulevard (LWB) are also shown. Figure 7. Plan view showing observed peat deformation east of Mercer Slough channel. Arrows depict direction and magnitude of displacement of representative inclinometers summarized in Table 1...
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Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2426(10)
... cores were taken along the western coast of the Puck Lagoon. Ordinates of the collected cores were geodetically determined to ± 1 cm relative to the mean sea level. Peat, plant remains, and marine shells (64 samples) were dated using the classic 14 C and AMS (accelerator mass spectrometry) methods...
Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2416(10)
... A, (Lower? to Middle Pleistocene) the slightly saline wetland developed under a relatively arid climate that favored slow flow movement of the fluvial system and the disconnection of the ponded areas. In the intermediate stage, unit B, (Middle to Upper Pleistocene) extensive peat developed during wetter...
Journal Article
Journal: Geology
Published: 01 January 2002
Geology (2002) 30 (1): 55-58.
.... Following dune stabilization, peat began to accumulate in interdune areas ca. 4.4 ka. 12 09 2001 19 04 2001 27 08 2001 Geological Society of America 2002 dunes Holocene climate optically stimulated luminescence (OSL) dating lake levels peat Dune fields are common...
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Journal Article
Journal: GSA Bulletin
Published: 01 December 2000
GSA Bulletin (2000) 112 (12): 1834-1849.
... cones within high-level cirque basins demonstrates evidence of episodic phases of late Holocene surface aggradation and incision. Radiocarbon dates from peat horizons above and below inorganic units show that phases of aggradation cluster into two distinct periods, the first after 230–790 calibrated...
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Journal Article
Published: 01 September 2000
Journal of Sedimentary Research (2000) 70 (5): 1026-1035.
... of this unit is an unconformity and represents the antecedent topography over which Holocene transgression occurs ( Kraft 1971 ). In places, this unit extends above the marsh surface, forming the upland "islands" such as Horse Island. Peat. —The peat consists of finely disseminated, reddish-brown organic...
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Journal Article
Journal: Geology
Published: 01 July 2000
Geology (2000) 28 (7): 663-666.
...Richard D. Pancost; Bas van Geel; Marianne Baas; Jaap S. Sinninghe Damsté Abstract This paper describes the first application of compound-specific stable carbon isotope and radiocarbon isotope analyses to the investigation of microbial processes in peat deposits. Carbon recycling in both modern...
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Journal Article
Published: 01 May 2000
Canadian Journal of Earth Sciences (2000) 37 (5): 661-681.
... or aquatic pollen records throughout this area. Sediment analysis indicates changes in peat type and variation in the accumulation of aquatic pollen, which suggest lowered water levels at some but not all sites. The results of the peatland model were validated by visually comparing the map generated...
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Journal Article
Published: 01 May 2000
Canadian Journal of Earth Sciences (2000) 37 (5): 683-693.
... inventories, and biophysical reports (list available from authors) and was divided into five types following those established by the Canadian Soil Survey Committee ( 1978 ) for surface expression. These include (1) level, with 98% of the maximum volume occupied by peat (1–3% slope); (2) undulating, with 93.5...
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Journal Article
Journal: PALAIOS
Published: 01 December 1999
PALAIOS (1999) 14 (6): 530-544.
...Evelyn S. Krull Abstract Palsas are peat mounds with permafrost cores that occur in regions of discontinuous permafrost. The distribution and stratigraphic context of clastic dikes in a mid-Permian coal seam in Antarctica, together with geochemical, paleobotanical, and carbon isotopic data...
Journal Article
Journal: Geology
Published: 01 September 1999
Geology (1999) 27 (9): 807-810.
...-wedge growth, peat accumulation, and eolian and fluvial deposition characterized the past ∼40 k.y. and do not support coverage of Yamal Peninsula by an ice sheet or proximity to a glacier margin. Thus, the late Weichselian Eurasian ice sheet was largely confined to Barents Sea and its global sea-level...
Journal Article
Journal: Geology
Published: 01 June 1999
Geology (1999) 27 (6): 539-542.
...Dan J. Charman; Ramon Aravena; Charlotte L. Bryant; Doug D. Harkness Abstract Carbon gases with younger 14 C ages than those of the surrounding peat have been reported from continental boreal peatlands, a fact which suggests that significant movement of CO 2 , CH 4 , or DOC (dissolved organic...
Journal Article
Published: 01 April 1999
Journal of the Geological Society (1999) 156 (2): 369-380.
... interpretation of changes in the more distant past. 16 5 1997 5 11 1997 © Geological Society of London 1999 1999 Geological Society of London Holocene climate palaeolimnology peat proxy records References Appleby P.G. Nolan P.J. Gifford D.W. Godfrey M.J...
Journal Article
Journal: AAPG Bulletin
Published: 11 November 1998
AAPG Bulletin (1998) 82 (11): 2075-2109.
... mass spectrometer 14 C dates of sediment core samples (marine gastropods, marine mollusks, barnacles, worm tubes, peat, and oysters) indicate all the sediment cored (1–4 m) in this study is Holocene in age (between 4740 ±60 and 11,230 ±90 14 C age). This radiocarbon dating consistently links...
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Journal Article
Journal: Palynology
Published: 01 October 1998
Palynology (1998) 22 (1): 67-82.
...Mirta E. Quattrocchio; Ana M. Borromei Abstract Pollen analysis from a sedimentary section in the valley of the Sauce Grande River (southwestern Buenos Aires Province) and a peat core from the Andorra Valley (southern Tierra del Fuego) provides evidence for the apparent large-scale synchroneity...
Journal Article
Published: 01 May 1998
Bulletin de la Société Géologique de France (1998) 169 (3): 381-393.
...), petrologically (maceral and microlithotype analysis) and geochemically (Rock-Eval pyrolysis). The vertical distribution of lithotypes and microlithotypes point to water table oscillations during the period of peat accumulation. The site of peat accumulation, however, was permanently covered with water. Maceral...