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Astartekloft

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Journal Article
Published: 01 January 2013
Journal of the Geological Society (2013) 170 (1): 37–46.
...Luke Mander; Wolfram M. Kürschner; Jennifer C. McElwain Abstract We present a palynological study of a terrestrial Triassic–Jurassic (Tr–J; c . 200 Ma) boundary section at Astartekløft, East Greenland. We have generated a new palynostratigraphic scheme and vegetation history for this locality...
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Journal Article
Published: 01 September 2011
Journal of Micropalaeontology (2011) 30 (2): 107–118.
... vegetation across the Triassic–Jurassic transition (Tr–J) at Astartekløft, East Greenland. Results indicate that reconstructions of Tr–J vegetation at Astartekløft based on sporomorphs are hampered by considerable taxonomic imprecision. Something is known of the botanical affinity of almost all sporomorphs...
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Journal Article
Journal: Paleobiology
Published: 01 November 2007
Paleobiology (2007) 33 (4): 547–573.
... beds at Astartekløft, Jameson Land, East Greenland ( Table 1 , Fig. 3 ). Most these fossil plant beds were originally discovered by Harris and were relocated by measuring distance in meters below a pecten-rich carbonate-cemented sandstone (Jamesoni Horizon) of the Neill Klinter Group ( Fig. 3...
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Journal Article
Journal: PALAIOS
Published: 01 August 2011
PALAIOS (2011) 26 (8): 461–469.
... known heights in nine plant beds spanning the Rhaetian–Hettangian (Upper Triassic–Lower Jurassic) at Astartekløft, East Greenland. We have constructed taxon-specific stable carbon-isotope curves for Ginkgoales and Bennettitales and compared these to an existing δ 13 C curve based on fossil wood from...
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Published: 01 November 2007
Figure 1. Stable carbon isotopic (δ 13 C) record from fossil wood ( Hesselbo et al. 2002 ) (A), cuticle ( McElwain et al. 1999 ) (B), and a paleoatmospheric carbon dioxide record ( McElwain et al. 1999 ) (C), plotted against height of the section at Astartekløft (cf. Fig. 3 ) across the Triassic
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Published: 01 November 2007
Figure 9. Scatter plot results of detrended correspondence analysis (DCA) of fossil plant occurrence data from Astartekløft compared with preliminary occurrence data collected from South Tancrediakløft (Tan.). Triassic fossil plants beds are in italics and Jurassic fossil plant beds are underlined
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Published: 01 August 2015
Fig. 1.— Schematic map of Greenland, showing the location of the fossil locality at Astartekløft, in Jameson Land, and a lithological log of the sedimentary section, indicating the position of plant beds 1–8. The Triassic–Jurassic boundary is indicated with a black arrow in bed 5, and the Tr–J
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Published: 01 January 2013
Fig. 6. Correlation of Tr–J boundary sections at Astartekløft, St Audrie’s Bay and Hochalplgraben. Carbon isotope data and stratigraphy at Astartekløft and St Audrie’s Bay are as for Figure 5 . Hochalplgraben carbon isotope data are from Ruhl et al . (2009) and stratigraphy is from Bonis et
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Published: 01 January 2013
Fig. 2. Pollen diagram showing the percentage of selected sporomorphs in each of the plant beds at Astartekløft analysed here. Data from plant beds shown at 3× vertical exaggeration. CONISS stratigraphically constrained cluster analysis ( Grimm 1987 ) was used to delineate each local sporomorph
Image
Published: 01 August 2011
FIGURE 1. Schematic log of the Astartekløft section compared to plant wood and cuticle δ 13 C signal. A) Simplified schematic log of Astartekløft showing the position of plant beds within the section, the depositional setting of each bed, and plant macrofossil zonation ( Hesselbo et al., 2002 ); B
Journal Article
Journal: Geology
Published: 01 September 2012
Geology (2012) 40 (9): 815–818.
... loss via the hydrological cycle. Figure 1. Development of stomatal density, stomatal length, and transpiration of Ginkoaleans and Bennettitaleans across Triassic–Jurassic boundary transition (Tr–J) at Astartekløft in Jameson Land, East Greenland, in relation to sedimentological log showing...
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Published: 01 November 2007
Appendix 2.  Range through species data for Astartekløft from Harris (1937: Table 1 )
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Published: 01 November 2007
Table 3.  Precentage representation of leaf genera at Astartekløft from generic abundance matrix ( Table 2 )
Journal Article
Journal: PALAIOS
Published: 01 August 2015
PALAIOS (2015) 30 (8): 597–607.
...Fig. 1.— Schematic map of Greenland, showing the location of the fossil locality at Astartekløft, in Jameson Land, and a lithological log of the sedimentary section, indicating the position of plant beds 1–8. The Triassic–Jurassic boundary is indicated with a black arrow in bed 5, and the Tr–J...
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Published: 01 November 2007
Appendix 1A.  Comparison of different counting methods on standard measures of diversity of fossil leaf taxa in Bed 1, Astartekløft
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Published: 01 September 2012
TABLE 1. MEAN STOMATAL AND CANOPY TRANSPIRATION FOR GINKGOALEANS AND BENNETTITALEANS ACROSS THE TRIASSIC–JURASSIC BOUNDARY TRANSITION AT ASTARTEKLØFT, EAST GREENLAND
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Published: 01 September 2011
Fig. 1 Map showing the location of the Astartekløft section in Jameson Land, East Greenland (after McElwain et al ., 2007 ).
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Published: 01 November 2007
Appendix 1.  Comparison of different methods of fossil leaf counting on generic relative and rank order abundance in Bed 1, Astartekløft
Journal Article
Journal: Geology
Published: 01 March 2002
Geology (2002) 30 (3): 251–254.
... data from Astartekløft, East Greenland. Biostratigraphy and lithostratigraphy from Harris (1937) , Pedersen and Lund (1980) , and Dam and Surlyk (1993) . Plant beds are from Harris (1937) , and beds A–D were relocated through collection and identification of leaf fossils; 2L, “two lowest”; T-P...
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Published: 01 August 2011
TABLE 1. Raw data table for all hand-picked cuticle fragments from the 2002 Astartekløft collection housed in the Field Museum of Natural History, Chicago.