Glacial dispersal train of Paleozoic erratics, central Baffin Island, N.W.T., Canada

1985 ◽  
Vol 22 (12) ◽  
pp. 1818-1826 ◽  
Author(s):  
Clinton R. Tippett
Keyword(s):  
Baffin Island ◽  
The West ◽  
Quaternary Sediment ◽  
Foxe Basin

A glacial dispersal train of erratics derived from Paleozoic bedrock has been delineated stretching east-northeast–west-southwest across central Baffin Island. The lithologies of these erratics suggest a derivation from strata of member B of the Ordovician Ship Point Formation to the west, which are presently either submerged or covered by Quaternary sediment in the eastern part of Foxe Basin. These Paleozoic erratics were carried from Foxe Basin onto the Baffin Upland and the western edge of the Davis Highlands. They can be inferred to have reached at least Ekalugad Fiord and the eastern part of Home Bay.

Evidence for reversal of basin polarity during carbonate ramp development in the Mesoproterozoic Borden Basin, Baffin Island

2002 ◽  
Vol 39 (4) ◽  
pp. 519-538 ◽  
Author(s):  
Anne G Sherman ◽  
Noel P James ◽  
Guy M Narbonne
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Deep Water ◽  
Foreland Basin ◽  
Baffin Island ◽  
The West ◽  
Marked Contrast ◽  
Accommodation Space ◽  
Basement Faults ◽  
Coppermine River

Distribution of facies in the lower half of the Bylot Supergroup suggests overall westward deepening of the Mesoproterozoic Borden Basin. In marked contrast, the upper half of the succession records a reversal in the overall bathymetric trend, such that the eastern portion underwent relative deepening as the west experienced relative shallowing. Strata deposited during this reversal belong to the Victor Bay Formation, a ramp composed predominantly of limestone. Karsting of carbonate strata and development of an angular unconformity in the west contrast with back-stepping and drowning of the ramp in the east, followed by mantling by deep-water limestone, carbonaceous carbonate, and turbidites. Increased accommodation space during this time, via both tectonic subsidence and eustatic sea-level rise, led to a profusion of stromatolite pinnacle reefs and large biostromes. The reversal of basin polarity is best reconciled with development of a distal foreland basin superimposed on the Borden aulacogen. Crustal rethickening and uplift occurred along reactivated basement faults during an eastward-directed compressional event and could be related to thrusting of similar age and vergence in the Coppermine River Group of northwestern Canada.

The Foxe Basin Coasts of Baffin Island

1943 ◽  
Vol 101 (5/6) ◽  
pp. 225 ◽  
Author(s):  
T. H. Manning
Keyword(s):  
Baffin Island ◽  
Foxe Basin

Bernhard Hantzsch: the probable cause of his death in Baffin Island in 1911

Polar Record ◽  
1977 ◽  
Vol 18 (117) ◽  
pp. 593-596 ◽  
Author(s):  
Graham Rowley
Keyword(s):  
Baffin Island ◽  
Foxe Basin ◽  
The North ◽  
Cumberland Sound

Bernhard Hantzsch was a German zoologist and explorer, born in 1875, whose first work in Canada was in northernmost Labrador in 1906. He returned to the north in 1909 with the object of exploring the then unknown Foxe Basin coast of Baffin Island. His plan was to set off from Cumberland Sound and travel with Eskimos across Baffin Island by way of Nettilling Lake and the Koukdjuak River, follow the coast north and west to Fury and Hecla Strait, and then make his way to Pond Inlet. Unfortunately, the ship that was taking him to Kerketen sank in Cumberland Sound; although all aboard made their way safely to Blacklead Island, most of his supplies were lost. Nevertheless he set off, ill-equipped, in the spring of 1910 with a group of Eskimos. By the end of the year he had established winter quarters at the mouth of what is now 245 Sylvan called the Hantzsch River, with two families, Aggakdjuk, his wife Arnga and their children, and Ittusakdjuak and his wife Sirkinirk.

The seismicity of northern Canada

1977 ◽  
Vol 14 (7) ◽  
pp. 1646-1667 ◽  
Author(s):  
P. W. Basham ◽  
D. A. Forsyth ◽  
R. J. Wetmiller
Keyword(s):  
Spatial Clustering ◽  
Data File ◽  
The Arctic ◽  
Baffin Island ◽  
Foxe Basin ◽  
Nares Strait ◽  
Free Air ◽  
History Of ◽  
Basement Structures ◽  
Tectonic Forces

The addition of over 1000 earthquakes to the northern Canadian data file during the past 3 years provides sufficient data to delineate distinctive patterns of seismicity, although the short history of low level earthquake monitoring and the temporal and spatial clustering of earthquakes suggests that not all potentially active areas may yet have been identified. The data indicate areas of activity near the larger earthquakes located teleseismically prior to the post-1960 northern expansion of the Canadian Seismograph Network and additional clusters and trends that were not previously apparent. Correlations to seismicity with major deformational trends in the Yukon – Mackenzie Valley, the northern continental margin, the Arctic archipelago and encircling much of the Baffin Island – Foxe Basin area show that structures formed or reactivated by Palaeozoic and later orogenic phases are continuing activity in response to the contemporary stress field.Possible zones of Cenozoic movement show pockets of high seismic activity but important gaps in the trends remain off Banks Island, along Nares Strait, and in Davis Strait. Tectonic forces characteristic of plate margins do not appear to be acting in the Canadian Arctic, and contemporary movement of Greenland with respect to Baffin Island does not need to be invoked to explain the seismicity in the Baffin region.Epicentre clusters in the Beaufort Sea and offshore of Ellef Ringnes Island are distributed mainly over the seaward gradient of elliptically shaped free air anomalies, indicating seismic adjustment in basement structures to uncompensated wedges of Recent–Tertiary sediments. Seismicity around much of the Baffin Island – Foxe Basin block shows a significant correlation with the interval of isostatic equilibrium between broad areas of current postglacial uplift. If northeastern Baffin Island is a hinge zone in the rebound process, and the zone from Hudson Strait to northeastern Keewatin a line of inflection in the rate of uplift contours, the reactivation of structures is occurring along zones of high differential stress.

scholarly journals Volume, Freshwater, and Heat Fluxes through Davis Strait, 2004–05*

2011 ◽  
Vol 41 (3) ◽  
pp. 429-436 ◽  
Author(s):  
B. Curry ◽  
C. M. Lee ◽  
B. Petrie
Keyword(s):  
Heat Fluxes ◽  
First Year ◽  
Baffin Island ◽  
Fram Strait ◽  
The West ◽  
Baffin Bay ◽  
Freshwater Fluxes ◽  
Davis Strait ◽  
Island Shelf ◽  
Southward Transport

Abstract Davis Strait volume [−2.3 ± 0.7 Sv (1 Sv ≡ 106 m3 s−1); negative sign indicates southward transport], freshwater (−116 ± 41 mSv), and heat (20 ± 9 TW) fluxes estimated from objectively mapped 2004–05 moored array data do not differ significantly from values based on a 1987–90 array but are distributed differently across the strait. The 2004–05 array provided the first year-long measurements in the upper 100 m and over the shelves. The upper 100 m accounts for 39% (−0.9 Sv) of the net volume and 59% (−69 mSv) of the net freshwater fluxes. Shelf contributions are small: 0.4 Sv (volume), 15 mSv (freshwater), and 3 TW (heat) from the West Greenland shelf and −0.1 Sv, −7 mSv, and 1 TW from the Baffin Island shelf. Contemporaneous measurements of the Baffin Bay inflows and outflows indicate that volume and freshwater budgets balance to within 26% and 4%, respectively, of the net Davis Strait outflow. Davis Strait volume and freshwater fluxes nearly equal those from Fram Strait, indicating that both are significant Arctic freshwater pathways.

scholarly journals KARAKTER ENDAPAN KUARTER DI LEPAS PANTAI TEPIAN CEKUNGAN SUMATERA TENGAH - P. KUNDUR

2016 ◽  
Vol 6 (2) ◽  
Author(s):  
Suyatman Hidayat ◽  
Indyo Pratomo
Keyword(s):  
Sea Level ◽  
Climatic Changes ◽  
River Channel ◽  
Depositional Environments ◽  
Sea Level Changes ◽  
Quaternary Sediments ◽  
The West ◽  
Quaternary Sediment ◽  
Vertical Variation ◽  
Deposition Processes

Studi yang dilakukan pada karakter endapan Kuarter di lepas pantai tepian cekungan Sumatera Tengah-P. Kundur mencakup analisis sedimentologi dan stratigrafi terhadap lima belas hasil pemboran yang dilakukan di sepanjang lintasan yang berarah barat - timur di baratlaut P. Kundur. Kedalaman pemboran berkisar antara 8,00 hingga 27,00 m. Studi ini, menunjukkan terdapatnya enam lingkungan pengendapan. Keenam lingkungan pengendapan itu ialah: endapan-endapan material rombakan (Mr), alur sungai (F), limpah banjir (Fp), cekungan banjir (Fb), pantai (Br), dan dekat pantai sampai lepas pantai. Berdasarkan korelasi perubahan lingkungan pengendapan secara lateral dan vertikal, diketahui pula bahwa runtunan stratigrafi tersebut dicirikan oleh berubahnya lingkungan pengendapan yang dikendalikan oleh perubahan iklim dan muka laut, dan mungkin juga oleh tektonik. Selama proses pengendapan, aktifitas perubahan iklim terekam dalam 4 fasa kejadian ialah: (1) minimum, (2)minimum menuju maksimum, (3)maksimum menuju minimum, dan (4)minimum. Kata kunci: Endapan Kuarter, iklim, muka-laut, tektonik The study of the Quaternary sediment characters on offshore of the Central Sumatera basin margin-Kundur Island was based on the analyses of sedimentology of fiveteen boreholes information obtained along the West to East at the northwest of Kundur Island. The penetration of the bore head varied from 8.00 to 27.00 m. This study revealed six deposition environments. These are: mass flow (Mr), river channel (F), floodplain (Fp), floodbasin (Fb), beach (Br), and nearshore to offshore (M) deposits . Based on the correlation of the lateral and vertical variation of the depositional environments, the stratigraphy successions/characterized by the variation of the depositional environments which is controlled by climatic and sea level changes, and also probably by tectonic. During the deposition processes, the activity of climatic changes were recorded in four stages episodes: (1)minimum, (2)minimum to optimum, (3)optimum to minimum, and (4)minimum. Keywords: Quaternary sediments, climate, sea-level, tectonic

Sign in / Sign up

Export Citation Format

Share Document