scholarly journals The fossil forests of the Buchanan Lake formation [early tertiary], Axel Heiberg Island, Canadian Arctic Archipelago: preliminary floristics and paleoclimate

1991 ◽  
Author(s):  
J F Basinger
Keyword(s):  
Canadian Arctic ◽  
Canadian Arctic Archipelago ◽  
Early Tertiary ◽  
Lake Formation ◽  
Axel Heiberg Island

Stratigraphy and floristics of Eocene swamp forests from Axel Heiberg Island, Canadian Arctic Archipelago

1993 ◽  
Vol 30 (9) ◽  
pp. 1914-1923 ◽  
Author(s):  
David R. Greenwood ◽  
James F. Basinger
Keyword(s):  
Canadian Arctic ◽  
System Structure ◽  
Forest Community ◽  
Forest Composition ◽  
Small Scale ◽  
Canadian Arctic Archipelago ◽  
Lake Formation ◽  
Axel Heiberg Island ◽  
Density And Biomass

A record of polar Eocene forests is preserved as in situ tree-stump fields and leaf-litter mats in Buchanan Lake Formation sediments on Axel Heiberg Island, in the Canadian Arctic Archipelago. Stratigraphic examination at the centimetre to metre scale of peat–coal lithology and macrofossil floristics in two levels of these fossil forests reflects small-scale changes in forest composition and swamp hydrology horizontally and temporal variation vertically. Root system structure and tree base stratigraphy suggest that exposed tree stumps may not include only coeval individuals of a single forest stand, but rather also individuals representing different phases of the forest through one cycle of the hydrological development of this Eocene polar forest community. Earlier calculations of stand density and biomass, based upon the assumption that all stumps represent coeval trees, may therefore be greatly overestimated. A mosaic of Alnus – fern bog, mixed coniferous community, and taxodiaceous (Metasequoia–Glyptostrobus) swamp appears to have produced both the leaf mats and the in situ stumps, with the taxodiaceous swamp the dominant peat-accumulating phase.

Origin of iron-oxide and silicate melt rocks in Paleogene sediments of southern Ellesmere Island, Canadian Arctic Archipelago, Nunavut

2007 ◽  
Vol 44 (7) ◽  
pp. 1005-1013 ◽  
Author(s):  
Karsten Piepjohn ◽  
Solveig Estrada ◽  
Lutz Reinhardt ◽  
Werner von Gosen ◽  
Harald Andruleit
Keyword(s):  
Canadian Arctic ◽  
Ellesmere Island ◽  
Anthropogenic Activity ◽  
Canadian Arctic Archipelago ◽  
X Ray Diffraction ◽  
Coal Seams ◽  
Volcanic Origin ◽  
X Ray ◽  
Early Tertiary ◽  
Unconsolidated Sand

Between Vendom Fiord and Makinson Inlet on southern Ellesmere Island, Canadian Arctic Archipelago, Nunavut, isolated and fault-bounded Early Tertiary basins are exposed. The basin deposits are Paleocene to Eocene in age and overlie unconformably folded Ordovician and Silurian carbonates of the Paleozoic Franklinian Basin that were affected by intense, pre-Paleocene weathering and karstification in places. The Tertiary sediments consist mainly of dark unconsolidated sand and silt and are interbedded with many centimetre- to metre-thick coal seams. In several places, round orange and red "spots" occur within the dark grey Tertiary basin fills and are clustered on top of the dark grey Tertiary occurrences. The "spots" are up to 100 m in diameter and consist of consolidated burnt shards of clay or clinker. In the centre of the reddish "spots," dark, massive, and partly high-magnetic lava- or slag-like rocks are poorly exposed as masses that are a decimetre or less in scale. These rocks were investigated using thin section studies, as well as X-ray diffraction and X-ray flourescence analyses. The melt rocks are composed of glass, cordierite-group minerals, hematite, magnetite, tridymite, mullite, and cristobalite. They represent paralavas resulting from subsurface combustion of the Tertiary coal seams under conditions similar to those in a blast furnace. An origin by anthropogenic activity or a volcanic origin can be ruled out.

scholarly journals Volcanic style in the Strand Fiord Formation (Upper Cretaceous), Axel Heiberg Island, Canadian Arctic Archipelago

1985 ◽  
Vol 3 (1) ◽  
pp. 107-122 ◽  
Author(s):  
B. Ricketts ◽  
K. G. Osadetz ◽  
A. F. Embry
Keyword(s):  
Upper Cretaceous ◽  
Canadian Arctic ◽  
Canadian Arctic Archipelago ◽  
Axel Heiberg Island

HIGH LATITUDE METEORIC OXYGEN ISOTOPE COMPOSITIONS FROM THE CENOMANIAN LOWER KANGUK FORMATION, AXEL HEIBERG ISLAND, CANADIAN ARCTIC ARCHIPELAGO

2018 ◽  
Author(s):  
Jeffrey Bryce Ross ◽  
◽  
Greg A. Ludvigson ◽  
Claudia J. Schroder-Adams
Keyword(s):  
Oxygen Isotope ◽  
High Latitude ◽  
Canadian Arctic ◽  
Canadian Arctic Archipelago ◽  
Axel Heiberg Island

scholarly journals Aptian to Santonian foraminiferal biostratigraphy and paleoenvironmental change in the Sverdrup Basin as revealed at Glacier Fiord, Axel Heiberg Island, Canadian Arctic Archipelago

2014 ◽  
Vol 413 ◽  
pp. 81-100 ◽  
Author(s):  
Claudia J. Schröder-Adams ◽  
Jens O. Herrle ◽  
Ashton F. Embry ◽  
James W. Haggart ◽  
Jennifer M. Galloway ◽  
...  
Keyword(s):  
Canadian Arctic ◽  
Canadian Arctic Archipelago ◽  
Paleoenvironmental Change ◽  
Sverdrup Basin ◽  
Axel Heiberg Island ◽  
Foraminiferal Biostratigraphy

Vascular plants from some localities in the western and northern parts of the Canadian Arctic Archipelago

1970 ◽  
Vol 48 (11) ◽  
pp. 1931-1938 ◽  
Author(s):  
Marian Kuc
Keyword(s):  
Vascular Plants ◽  
Canadian Arctic ◽  
River Valley ◽  
Canadian Arctic Archipelago ◽  
Good Friday ◽  
Banks Island ◽  
Axel Heiberg Island

The paper lists 123 species of vascular plants from several areas hitherto not investigated botanically: Masik River Valley, Banks Island; Eglinton Island; Fitzwilliam Owen Island; and Good Friday Bay, Axel Heiberg Island. Also, collections are listed from Meighen Island and from the vicinity of Eureka, Axel Heiberg Island, both areas where botanical work has been carried out earlier.

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