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97 results for “fossil wood”
Text-fig. 14. Schema of transversal section of Manilkaroxylon sp. (sample DR2). ap – axial parenchyma, grb – growth ring boundaries, r – rays, v – vessels. in New Fossil Woods From The Paleogene Of Doupovské Hory And České Středohoří Mts. (Bohemian Massif, Czech Republic)
Text-fig. 14. Schema of transversal section of Manilkaroxylon sp. (sample DR2). ap – axial parenchyma, grb – growth ring boundaries, r – rays, v – vessels.
Text-fig. 7. Schema of radial section of T. gypsaceum (sample 98/04). t – tracheid, r – ray, bp – bordered pit, tp – taxodioid pit, cp – cupressoid pit. in New Fossil Woods From The Paleogene Of Doupovské Hory And České Středohoří Mts. (Bohemian Massif, Czech Republic)
Text-fig. 7. Schema of radial section of T. gypsaceum (sample 98/04). t – tracheid, r – ray, bp – bordered pit, tp – taxodioid pit, cp – cupressoid pit.
Text-fig. 10. Schema of transversal section of A. tschemrylica (sample 97/04). v – vessel, r – ray, ar – aggregate ray, grb – growth-ring boundary. in New Fossil Woods From The Paleogene Of Doupovské Hory And České Středohoří Mts. (Bohemian Massif, Czech Republic)
Text-fig. 10. Schema of transversal section of A. tschemrylica (sample 97/04). v – vessel, r – ray, ar – aggregate ray, grb – growth-ring boundary.
Text-fig. 2: Microscopic photo of the wood from Kučlín (specimen No. G 4723, NM, transverse section) shoving growth ring boundary with markedly rounded tracheids and abundant axial parenchyma (dark cells) present both in late- and earlywood (scale bar = 100 µm). in Silicified Stem From The Late Eocene Fossil Locality Of Kučlín (Czech Republic): Overview And New Remarks
Text-fig. 2: Microscopic photo of the wood from Kučlín (specimen No. G 4723, NM, transverse section) shoving growth ring boundary with markedly rounded tracheids and abundant axial parenchyma (dark cells) present both in late- and earlywood (scale bar = 100 µm).
Fig. 2 in The oldest record of Juniperoxylon, a cupressaceous fossil wood from the Middle Triassic of Argentina
Fig. 2. Cupressaceous wood Juniperoxylon zamunerae (Bodnar, Ruiz, Artabe, Morel, and Ganuza, 2015) comb. nov. (holotype PBSJ 828, A; PBSJ 829, B), Cortaderita Formation, Middle Triassic of Argentina. A1, growth rings (white arrowheads) and axial parenchyma (black arrowheads), TS; A2, torus (arrowheads), TS; A3, A4, uniseriate or rarely biseriate radial pitting on tracheid walls (arrowheads), RLS; A5, cupressoid cross-field pits (black arrowheads) and nodular end walls of ray parenchyma (white arrowheads), RLS; A6, A7, detail of cross-field pits, RLS; A8, general view of ray parenchyma cells walls distinctly pitted (arrowheads), RLS; A9, A10, different ray parenchyma cells (arrowheads), RLS; A11, occasional biseriation on part of a ray (white arrowhead) and axial parenchyma (black arrowhead), TLS; A12, radial pits with torus (arrowheads), TLS; A13, cross-field with cupressoid pits, RLS. B1, B2, ray parenchyma walls distinctly pitted (arrowheads), RLS.
Fig. 1. A in The oldest record of Juniperoxylon, a cupressaceous fossil wood from the Middle Triassic of Argentina
Fig. 1. A. Geographic location of study area at San Juan Province, Argentina. C. Geologic map showing the sampled locality (asterisk) at Cortaderita and La Tinta creeks, near Barreal town. Taken from Bodnar et al. (2018).
Figure 8 in Neutron imaging investigation of fossil woods: non-destructive characterization of microstructure and detection of in situ changes as occurring in museum cabinets
Figure 8. Evolution of I(q) vs. q upon drying for (a) Rivecourt and (b) Angeac. The inset is a close-up of the area between 0.01 and 0.07 µm−1.
Figure 5 in Neutron imaging investigation of fossil woods: non-destructive characterization of microstructure and detection of in situ changes as occurring in museum cabinets
Figure 5. Evolution of I(q) vs. q upon wetting for (a) Rivecourt and (b) Angeac. The inset is a close-up of the area between 0.01 and 0.07 µm−1.
Figure 3 in Neutron imaging investigation of fossil woods: non-destructive characterization of microstructure and detection of in situ changes as occurring in museum cabinets
Figure 3. Evolution with time of average grey levels in the wetting experiment for (a) Rivecourt and (b) Angeac. (c) Evolution with time of normalized grey levels. Blue: Rivecourt sample. Red: Angeac sample (see text for details).
Figure 2 in Neutron imaging investigation of fossil woods: non-destructive characterization of microstructure and detection of in situ changes as occurring in museum cabinets
Figure 2. Radiographic images of sample upon sorption experiments. The three pictures on the top are from the Angeac sample, while the four on the bottom are that of Rivecourt. The scale represents 1 cm. The marked areas correspond to the zones used for measuring average grey levels.
Figure 1 in Neutron imaging investigation of fossil woods: non-destructive characterization of microstructure and detection of in situ changes as occurring in museum cabinets
Figure 1. (a) Picture of neutron guide through experimental chamber. (b) Sorption experiment setup and radiographic image obtained. Wood samples were placed in an aluminum cup filled with water. Water appears dark, while aluminum is transparent to neutrons. (c) Desorption experiment setup and radiographic image obtained. Wood samples were wrapped in aluminum foils and placed in a tube, with direct air input (plastic tube, on top).
Figure 7 in Neutron imaging investigation of fossil woods: non-destructive characterization of microstructure and detection of in situ changes as occurring in museum cabinets
Figure 7. Evolution with time of average grey levels in the drying experiment for (a) Rivecourt and (b) Angeac. (c) Evolution with time of normalized grey levels. Blue: Rivecourt sample. Red: Angeac sample (see text for details). (d) Evolution of average grey levels in the drying experiments plotted as a function of the square root of time. Blue: Rivecourt sample. Red: Angeac sample.
Figure 6 in Neutron imaging investigation of fossil woods: non-destructive characterization of microstructure and detection of in situ changes as occurring in museum cabinets
Figure 6. Radiographic images of sample upon desorption experiments. The Angeac sample is on the top, while the Rivecourt sample is on the bottom. The scale represents 1 cm. The marked areas correspond to the zones used for measuring average grey levels. (For Rivecourt, it was done on another sample due to implosion of the sample.)
Figure 4 in Neutron imaging investigation of fossil woods: non-destructive characterization of microstructure and detection of in situ changes as occurring in museum cabinets
Figure 4. Evolution of average grey levels in the wetting experiments plotted as a function of the square root of time. (a) Rivecourt and (b) Angeac.
FIG. 5. — A in Silicified angiosperm wood from the Dangu locality (Ypresian of the Gisors region, Eure, France) - final part: the problem of palaeoclimate reconstruction based on fossil wood
FIG. 5. — A, Dichrostachyoxylon cf. zirkelii (SY7), cross-section; B, Anogeissus sp. (W4), cross-section; C, Dichrostachyoxylon cf. zirkelii (SY7), tangential section; D, Anogeissus sp. (W4), tangential section, detail of a septate fibre (septum indicated by the arrow); E, Anogeissus sp. (W4), tangential section, general view. Scale bars: A, B, 500 µm; C, 100 µm; D, 50 µm; E, 200 µm.
FIG. 2. — A-E in Silicified angiosperm wood from the Dangu locality (Ypresian of the Gisors region, Eure, France) - final part: the problem of palaeoclimate reconstruction based on fossil wood
FIG. 2. — A-E, Grangeonixylon danguense (W1, W2); A, cross-section of the stem form (W2); B, cross-section of the root form (W1); C, stem form in tangential view (W2); D, stem form in tangential view, rays detail (W2); E, root form in tangential view (W1); F-H, cf. Liquidambaroxylon sp. (Wtourbe); F, cross-section (same part, vertically reversed, described in detail in Sakala et al. 1999: fig. 2a); G, tangential section; H, tangential section, detail of scalariform pitting. Scale bars: A, B, 500 µm; C, E, G, 200 µm; D, 150 µm; F, 100 µm; H, 50 µm.
FIG. 4 in Silicified angiosperm wood from the Dangu locality (Ypresian of the Gisors region, Eure, France) - final part: the problem of palaeoclimate reconstruction based on fossil wood
FIG. 4. — Anogeissus sp. (W4), cross-section. Abbreviations: F, fibres; PBT, parenchyma in tangential band; PT, terminal parenchyma; R, rays; V, vessels. Scale bar: 200 µm.
FIG. 3 in Silicified angiosperm wood from the Dangu locality (Ypresian of the Gisors region, Eure, France) - final part: the problem of palaeoclimate reconstruction based on fossil wood
FIG. 3. — Dichrostachyoxylon cf. zirkelii (SY7), cross-section. Abbreviations: F, fibres; PCM, circummedullar parenchym; PV, vasicentric parenchyma; R, rays; V, vessels. Scale bar: 200 µm.
FIG. 1 in Silicified angiosperm wood from the Dangu locality (Ypresian of the Gisors region, Eure, France) - final part: the problem of palaeoclimate reconstruction based on fossil wood
FIG. 1. — Location and overview of the Dangu locality; A, gymnosperm and angiosperm wood; B, palm wood; C, silicified peat, after Koeniguer (1981), modified.
FIG. 6 in Silicified angiosperm wood from the Dangu locality (Ypresian of the Gisors region, Eure, France) - final part: the problem of palaeoclimate reconstruction based on fossil wood
FIG. 6. — Reconstitution of the Dangu locality in the time of the sedimentation of the fossil peat (lower Ypresian, sparnacian facies); A, lagoon environment; B, fluvial environment; C, lagoon-fluvial environment; D, sandy-clay reliefs; E, environment of the peat deposition; F, Taxodioxylon; G, Palmoxylon; H, Dichrostachyoxylon; I, Liquidambaroxylon; J, Grangeonixylon; K, Anogeissus.
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International Brain Laboratory public data
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OpenNeuro
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