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1-20 OF 45 RESULTS FOR
Giraffe Pipe
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Journal Article
History of the Giraffe Pipe locality inferred from microfossil remains: a thriving freshwater ecosystem near the Arctic Circle during the warm Eocene Open Access
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 01 March 2023
Journal of Paleontology (2023) 97 (2): 271–291.
... warming on arctic environments. A core from the Giraffe Pipe fossil locality located in the Northwest Territories of Canada offers a window into the life of a thriving Arctic freshwater ecosystem in the Eocene during greenhouse conditions. The remains of an extensive deposit of microfossils, including...
Image
FIGURE 3 —Valves of Actinella morphotype Giraffe 1 from Giraffe Pipe sedi... Available to Purchase
in TROPICAL OCHROPHYTE ALGAE FROM THE EOCENE OF NORTHERN CANADA: A BIOGEOGRAPHIC RESPONSE TO PAST GLOBAL WARMING
> PALAIOS
Published: 01 March 2009
FIGURE 3 —Valves of Actinella morphotype Giraffe 1 from Giraffe Pipe sediments (A–D, G–H) and the modern species, A. parva , from Lake Judd, Tasmania (E–F). A– B) Internal (A) and external (B) views of whole valves. Note the varying lengths of the raphe slits and their position along the ventral
Image
(A) Map of the Wombat and Giraffe pipe localities and locations of other ki... Available to Purchase
in Tephra zircon U-Pb geochronology of kimberlite maar sedimentary fills in subarctic Canada: Implications for Eocene paleoclimate and Late Cretaceous paleogeography
> GSA Bulletin
Published: 01 March 2024
Figure 1. (A) Map of the Wombat and Giraffe pipe localities and locations of other kimberlites in the Lac de Gras area, Northwest Territories (NWT), Canada (adapted from Stasiuk et al., 2002 ). (B) Stratigraphic log summaries of Giraffe drill core BHP99-01 and Wombat drill cores DDH00-5 and CH93
Image
Stratigraphic diagram of the 163 m Giraffe Pipe core, detailing the distrib... Open Access
in History of the Giraffe Pipe locality inferred from microfossil remains: a thriving freshwater ecosystem near the Arctic Circle during the warm Eocene
> Journal of Paleontology
Published: 01 March 2023
Figure 1. Stratigraphic diagram of the 163 m Giraffe Pipe core, detailing the distribution of lacustrine shales and mudstones, terrestrial plant remains, and overlying Quaternary glacial sediments. Numbers indicate the transition points between the ( 1 ) Botryococcus and Aulacoseira zones
Image
Distribution and abundance of 15 taxa in the Giraffe Pipe core deemed signi... Open Access
in History of the Giraffe Pipe locality inferred from microfossil remains: a thriving freshwater ecosystem near the Arctic Circle during the warm Eocene
> Journal of Paleontology
Published: 01 March 2023
Figure 4. Distribution and abundance of 15 taxa in the Giraffe Pipe core deemed significant for characterizing and distinguishing among the major aquatic zones over the history of the waterbody. ( 1 ) Chrysophyte cysts; ( 2 ) testate euglyphid plates; ( 3 ) Botryococcus colonies; ( 4
Image
Representative images of the Giraffe Pipe core relative to the major shifts... Open Access
in History of the Giraffe Pipe locality inferred from microfossil remains: a thriving freshwater ecosystem near the Arctic Circle during the warm Eocene
> Journal of Paleontology
Published: 01 March 2023
Figure 10. Representative images of the Giraffe Pipe core relative to the major shifts in community structure. Images are arranged from ( 1 ) near the onset of the lacustrine phase at the bottom of the core to ( 13 ) close to the termination of the lake phase and just before the transition
Image
FIGURE 1 —Location map and the Giraffe Pipe core. A) Location. B) Schematic... Available to Purchase
in TROPICAL OCHROPHYTE ALGAE FROM THE EOCENE OF NORTHERN CANADA: A BIOGEOGRAPHIC RESPONSE TO PAST GLOBAL WARMING
> PALAIOS
Published: 01 March 2009
FIGURE 1 —Location map and the Giraffe Pipe core. A) Location. B) Schematic stratigraphy. C) Lithostratigraphy and location of observations.
Image
FIGURE 2 —Fossil Mallomonas bangladeshica scales from Giraffe Pipe sedime... Available to Purchase
in TROPICAL OCHROPHYTE ALGAE FROM THE EOCENE OF NORTHERN CANADA: A BIOGEOGRAPHIC RESPONSE TO PAST GLOBAL WARMING
> PALAIOS
Published: 01 March 2009
FIGURE 2 —Fossil Mallomonas bangladeshica scales from Giraffe Pipe sediments (A, C, E–F) and modern forms from the Paraná River delta, Argentina (B, D). A–B) Whole scales, each with a posterior upturned rim, anterior thickened margin, large anterior depression, surface papillae, and a well
Image
FIGURE 2 —SEM micrographs of Aulacoseira from Giraffe Pipe sediments. (A)... Available to Purchase
in A First Account of Organelle Preservation in Eocene Nonmarine Diatoms: Observations and Paleobiological Implications
> PALAIOS
Published: 01 June 2006
FIGURE 2 —SEM micrographs of Aulacoseira from Giraffe Pipe sediments. (A) Diatoms embedded in the matrix of an untreated fractured mudstone surface. (B) A complete cell with concave face and linking spines (top) and spineless terminal valve (bottom). (C–E) Various morphologies of balled
Journal Article
Tephra zircon U-Pb geochronology of kimberlite maar sedimentary fills in subarctic Canada: Implications for Eocene paleoclimate and Late Cretaceous paleogeography Available to Purchase
Serhiy D. Buryak, Alberto V. Reyes, Christopher K. West, Britta J.L. Jensen, S. Andrew DuFrane, Joshua H.F.L. Davies, Yan Luo, Jennifer M. Galloway, Peter A. Siver, John A. Westgate, Jesse R. Reimink, D. Graham Pearson, Alexander P. Wolfe
Journal: GSA Bulletin
Publisher: Geological Society of America
Published: 01 March 2024
GSA Bulletin (2024) 136 (9-10): 3921–3938.
...Figure 1. (A) Map of the Wombat and Giraffe pipe localities and locations of other kimberlites in the Lac de Gras area, Northwest Territories (NWT), Canada (adapted from Stasiuk et al., 2002 ). (B) Stratigraphic log summaries of Giraffe drill core BHP99-01 and Wombat drill cores DDH00-5 and CH93...
Image
Results of ( 1 ) the percentage of microfossils representing heterotrophic ... Open Access
in History of the Giraffe Pipe locality inferred from microfossil remains: a thriving freshwater ecosystem near the Arctic Circle during the warm Eocene
> Journal of Paleontology
Published: 01 March 2023
Figure 5. Results of ( 1 ) the percentage of microfossils representing heterotrophic organisms, and ( 2 ) the ratio of chrysophyte cysts to diatom valves in the Giraffe Pipe core. The solid line represents a running average. T = Terminal Lake Zone, H = Heterotrophic Zone, E = Eunotioid Zone
Image
Results of non-metric multidimensional scaled ordination (nMDS) analyses of... Open Access
in History of the Giraffe Pipe locality inferred from microfossil remains: a thriving freshwater ecosystem near the Arctic Circle during the warm Eocene
> Journal of Paleontology
Published: 01 March 2023
Figure 7. Results of non-metric multidimensional scaled ordination (nMDS) analyses of 175 samples distributed in 16 core boxes (11–26) within the lacustrine phase of the Giraffe Pipe core based on abundances of 58 taxa. Samples within a given core box, with the exception of those in box 13
Image
Results of a SIMPER analysis identifying the organisms that contribute the ... Open Access
in History of the Giraffe Pipe locality inferred from microfossil remains: a thriving freshwater ecosystem near the Arctic Circle during the warm Eocene
> Journal of Paleontology
Published: 01 March 2023
Table 4. Results of a SIMPER analysis identifying the organisms that contribute the most to the transition between the Eunotioid and Heterotrophic zones in the Eocene waterbody from the Giraffe Pipe locality. Abundance numbers represent mean log e (X + 1) values. The number in parentheses under
Image
Results of a SIMPER analysis identifying the organisms that contribute the ... Open Access
in History of the Giraffe Pipe locality inferred from microfossil remains: a thriving freshwater ecosystem near the Arctic Circle during the warm Eocene
> Journal of Paleontology
Published: 01 March 2023
Table 2. Results of a SIMPER analysis identifying the organisms that contribute the most to the transition between the Botryococcus and Aulacoseira Zones in the Eocene waterbody from the Giraffe Pipe locality. Abundance numbers represent mean log e (X + 1) values. The number in parentheses
Image
Results of a SIMPER analysis identifying the organisms that contribute the ... Open Access
in History of the Giraffe Pipe locality inferred from microfossil remains: a thriving freshwater ecosystem near the Arctic Circle during the warm Eocene
> Journal of Paleontology
Published: 01 March 2023
Table 5. Results of a SIMPER analysis identifying the organisms that contribute the most to the transition between the Heterotrophic and Terminal Lake zones in the Eocene waterbody from the Giraffe Pipe locality. Abundance numbers represent mean log e (X + 1) values. The number in parentheses
Image
FIGURE 1 —Color LM micrographs of diatoms from thin sections of Giraffe Pip... Available to Purchase
in A First Account of Organelle Preservation in Eocene Nonmarine Diatoms: Observations and Paleobiological Implications
> PALAIOS
Published: 01 June 2006
FIGURE 1 —Color LM micrographs of diatoms from thin sections of Giraffe Pipe lacustrine mudstone. Arrows indicate protoplasmic remnants encased within intact frustules. Scale bars=10 μm. Discrete green masses occur at the junction between valve face and mantle (A), clustered near the central lumen
Image
Scanning electron micrographs of untreated rock fragments from four represe... Open Access
in History of the Giraffe Pipe locality inferred from microfossil remains: a thriving freshwater ecosystem near the Arctic Circle during the warm Eocene
> Journal of Paleontology
Published: 01 March 2023
Figure 2. Scanning electron micrographs of untreated rock fragments from four representative stratigraphic intervals of the Giraffe Pipe core dominated by ( 1 ) chrysophyte cysts; ( 2 ) scales of Mallomonas insignis Penard, 1919 ; ( 3 ) the diatom Aulacoseira giraffensis Siver, Wolfe
Image
Results of a SIMPER analysis identifying the organisms that contribute the ... Open Access
in History of the Giraffe Pipe locality inferred from microfossil remains: a thriving freshwater ecosystem near the Arctic Circle during the warm Eocene
> Journal of Paleontology
Published: 01 March 2023
Table 3. Results of a SIMPER analysis identifying the organisms that contribute the most to the transition between the Aulacoseira and Eunotia Zones in the Eocene waterbody from the Giraffe Pipe locality. Abundance numbers represent mean log e (X + 1) values. The number in parentheses under
Image
FIGURE 4 —Examples of mummified Metasequoia glyptostroboides remains from... Available to Purchase
in TROPICAL OCHROPHYTE ALGAE FROM THE EOCENE OF NORTHERN CANADA: A BIOGEOGRAPHIC RESPONSE TO PAST GLOBAL WARMING
> PALAIOS
Published: 01 March 2009
FIGURE 4 —Examples of mummified Metasequoia glyptostroboides remains from Giraffe Pipe terrestrial sediments immediately overlying the lacustrine sequence. A) Litter dominated by M. glyptostroboides from a depth of 85 m in the core (62 m equivalent vertical depth; cf. Fig. 1 ). B) Higher
Journal Article
TROPICAL OCHROPHYTE ALGAE FROM THE EOCENE OF NORTHERN CANADA: A BIOGEOGRAPHIC RESPONSE TO PAST GLOBAL WARMING Available to Purchase
Journal: PALAIOS
Publisher: SEPM Society for Sedimentary Geology
Published: 01 March 2009
PALAIOS (2009) 24 (3): 192–198.
...FIGURE 3 —Valves of Actinella morphotype Giraffe 1 from Giraffe Pipe sediments (A–D, G–H) and the modern species, A. parva , from Lake Judd, Tasmania (E–F). A– B) Internal (A) and external (B) views of whole valves. Note the varying lengths of the raphe slits and their position along the ventral...
1