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Journal Article
Journal: GSA Bulletin
Published: 16 February 2022
GSA Bulletin (2022)
.... Radiocarbon ages derived from burn horizons (laterally continuous concentrations of charcoal) within basal colluvial wedge 2 Geological Society of America Bulletin, v. 130, no. XX/XX 114.0°W Predecessors to the 1983 Borah Peak earthquake 113.5°W 44.5°N Beaverhead fault zone Lemhi RC lt S2C5K AG PS DP Borah...
Journal Article
Published: 01 December 2021
South African Journal of Geology (2021) 124 (4): 1047–1054.
...M.K. Bamford Abstract Although the lack of Late Quaternary pollen, phytolith and charcoal records for southern Africa has been bemoaned by many, there are a surprising number of publications by a relatively small group of researchers. Previous comprehensive reviews covered the research up to 2016...
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Journal Article
Published: 03 November 2021
Bulletin de la Société Géologique de France (2021) 192 (1): 53.
... organisation and colour. When present, fragments of charcoal were also hand-picked, for the purpose of dating. The survey covered the whole study area. Four sites were selected in the local catchment, distributed from upstream to downstream ( Fig. 4 ). At the scale of the survey area, May Weini b (MWb...
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Series: GSA Special Papers
Published: 12 August 2021
DOI: 10.1130/2018.2536(02)
EISBN: 9780813795362
... TABLE 1. UNCALIBRATED 14C DATES AND CALIBRATED AGES FOR LITTLE LAKE TABLE 2. KOLOMOGOROV-SMIRNOV D VALUES OF BETWEEN-ZONE FIRE INTERVAL COMPARISONS* WITH ONE MEAN FIRE INTERVAL (MFI) ± ONE STANDARD DEVIATION (SD) Figure 5. Charcoal accumulation rates (CHAR) from 35,000...
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Series: GSA Special Papers
Published: 12 August 2021
DOI: 10.1130/2018.2536(03)
EISBN: 9780813795362
..., organic matter content, C:N ratio, biogenic silica abundance, and grain-size distribution. Depth-age models were developed using optically stimulated luminescence (OSL) dating, along with accelerator mass spectrometry (AMS) 14 C dating of terrestrial macrofossils (wood and conifer needles), charcoal...
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Series: GSA Special Papers
Published: 12 August 2021
DOI: 10.1130/2018.2536(13)
EISBN: 9780813795362
...) to low (right) elevation. Figure 5. Summary of pollen ratios, plant macrofossils, and sediment characteristics. (A) Summer insolation curve for 65°N ( Laskar et al., 2004) . (B) δ 18 O values (‰) of San Luis Lake sediments ( Yuan et al., 2013) . (C) CHAR (charcoal influx, particles cm –2 yr –1...
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Journal Article
Published: 09 March 2021
Bulletin de la Société Géologique de France (2021) 192 (1): 4.
... – + – – – Increase of Si and Ti – 80% of ash content The Poznan Radiocarbon Laboratory and Beta Analytic Laboratory performed AMS radiocarbon dating (acid-alkali-acid pre-treatment) on eight samples (isolated plant remains, leaf, seed, charcoal or total sediment) ( Tab. 1 ). An age-depth model...
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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 10 February 2021
Lithosphere (2021) 2021 (1): 7866379.
... 606 ± 34 Organic sediment BETA TC1 Beta-482199 FMP-C-6 720 ± 30 668 ± 26 Organic sediment Beta-482200 FMP-C-9 680 ± 30 629 ± 41 Organic sediment Beta-482201 FMP-C-12 1750 ± 30 1658 ± 43 Charcoal Beta-482202 FMP-C-14...
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Journal Article
Journal: Geology
Published: 29 May 2020
Geology (2020) 48 (9): 867–871.
... carbon, and gravel-sized charcoal particles are common on the outwash plain in front of the crater. The organic matter is depleted in the thermally sensitive, labile bio-macromolecule proto-hydrocarbons. Pebble-sized lumps of lignite collected close to the sand sample consist largely of fragments...
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Journal Article
Journal: Palynology
Published: 02 April 2020
Palynology (2020) 44 (2): 355–368.
..., loss on ignition, and microscopic charcoal analyses were applied to a profile collected from the deposits of the rich fen which developed in the landslide depression. The results reveal that during the period between ca. 4800 ± 70 and 4160 ± 60 cal. BP, Picea abies dominated in the local forests...
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Journal Article
Published: 30 March 2020
Canadian Journal of Earth Sciences (2020) 57 (10): 1238–1253.
... are, as of yet, unresolved. New radiocarbon dating of wood charcoal from immediately beneath vent-proximal tephra deposits and complementary age information suggest an eruption in 1675–1778 CE (95.4% probability) was responsible for the formation of the tephra cone. New paleomagnetic and geochemical data from...
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Journal Article
Journal: PALAIOS
Published: 13 January 2020
PALAIOS (2020) 35 (1): 22–36.
... mechanisms are conducive to their accumulation. Throughout the coal seams the conversion of plant material into charcoal (fusain) and its accumulation in a subaqueous setting provides one means of near-perfect preservation. A second and more uncommon example occurs in the form of a 20 cm thick leaf-litter...
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Journal Article
Journal: Geology
Published: 03 January 2020
Geology (2020) 48 (3): 288–292.
... sediments also record increased abundance of fossil charcoal coincident with the onset of a negative carbon isotope excursion and the loss of tropical rainforest vegetation, both of which occurred immediately before the peak of Hg concentrations. The organic carbon isotope data show an ∼5‰–6‰ negative...
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Journal Article
Published: 09 December 2019
Scottish Journal of Geology (2020) 56 (1): 30–46.
... and the sensitivity of palaeoenvironmental proxies to abrupt change. We present a high-resolution palynological and charcoal study of Quoyloo Meadow, Orkney and use the Principal Curve statistical method to assist in revealing biostratigraphic change. The LGIT vegetation succession on Orkney is presented as open...
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Journal Article
Journal: Palynology
Published: 03 July 2019
Palynology (2019) 43 (3): 517–522.
... to plot pollen and microscopic charcoal by age for the entirety of the record, and more accurately represents site history. Plotting pollen and charcoal assemblages by age using our new chronology highlights the long intervals of time that are missing from the postglacial record at Anderson Pond, while...
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Journal Article
Journal: GSA Bulletin
Published: 13 June 2019
GSA Bulletin (2020) 132 (1-2): 321–333.
... time scales, the likelihood and behavior of fire are also controlled by other factors such as climate, implying that CO 2 -driven climate changes should also be observable in the fossil charcoal record. We tested this hypothesis and present a high-resolution study of fire history through the use...
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Journal Article
Journal: GSA Bulletin
Published: 09 April 2019
GSA Bulletin (2019) 131 (11-12): 1783–1793.
... spectrometry for radiocarbon dating of charcoal material found at site WM4 was undertaken at Australia’s Nuclear Science and Technology Organisation facilities in Lucas Heights, Australia (OZV378, OZW236). Results were calibrated using Bayesian statistics in OxCal ( Bronk Ramsey, 1995 ) using the Southern...
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Journal Article
Journal: Geology
Published: 26 February 2019
Geology (2019) 47 (4): 303–307.
... records have been obtained worldwide. Here, two independent micro-charcoal–based fire records from the northern Tibetan Plateau were analyzed; both show similar trends in micro-charcoal concentrations through time, with low abundances in the warmer Middle Miocene Climate Optimum (18–14 Ma) followed...
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Journal Article
Published: 05 June 2018
Journal of Sedimentary Research (2018) 88 (6): 696–716.
...Emese M. Bordy; Devon A. Bowen; John Moore; Mark H. Garnett; Harilaos Tsikos Abstract Wildfires and flooding events are common and are forceful intrinsic controls over landscape evolution, biodiversity, and preserved sediment architecture in dryland environments. Charcoal-bearing Holocene flood...
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Journal Article
Journal: Geology
Published: 15 February 2018
Geology (2018) 46 (4): 363–366.
...; 2—EPICA (European Project for Ice Coring in Antarctica) Dome C, Antarctica; 3—Lago Cipreses, Chile; 4—sediment core GeoB3313-1, Chile (see text). Here we present multiproxy lake sediment data (organic and inorganic geochemistry, pollen, charcoal, and near-visible light reflectance) spanning...
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