Late Precambrian Rocks of the North Shore of the St. Lawrence River and of the Mistassini and Otish Mountains Areas, Quebec

1957 ◽  
pp. 124-131 ◽  
Author(s):  
Robert Bergeron
Keyword(s):  
Precambrian Rocks ◽  
Late Precambrian ◽  
North Shore ◽  
The North ◽  
St Lawrence River

Seismicity and faulting in the Charlevoix zone of the St. Lawrence Valley

1984 ◽  
Vol 74 (2) ◽  
pp. 595-603
Author(s):  
F. M. Anglin
Keyword(s):  
Active Zone ◽  
Continuous Monitoring ◽  
North Shore ◽  
The North ◽  
Earthquake Zone ◽  
St Lawrence River

Abstract Continuous monitoring of the seismically active Charlevoix zone since late 1977 has delineated the boundaries of the earthquake zone under the north shore and has enabled an association to be made with surface mapped faults that strike along the St. Lawrence Valley and dip to the southeast. Within the active zone, aseismic volumes are found under parts of the St. Lawrence River and another elongated zone of activity is found to the southeast on unmapped faults dipping under the river. The previous suggestions that the activity is related to old rift faults, which have been later weakened by a meteor impact, would seem to be upheld.

Preliminary interpretation of the first refraction arrivals in Gaspé from shots in Labrador and Quebec

1969 ◽  
Vol 6 (4) ◽  
pp. 771-774 ◽  
Author(s):  
Douglas S. Rankin ◽  
Ravi Ravindra ◽  
David Zwicker
Keyword(s):  
Upper Mantle ◽  
Arrival Time ◽  
The South ◽  
North Shore ◽  
The North ◽  
A Value ◽  
South Shore ◽  
Compressional Velocity ◽  
St Lawrence River

Previous work in the Gulf of St. Lawrence has yielded an unusually high upper-mantle compressional velocity. In the Gaspé area a more recent determination has yielded a value of 8.75 ± 0.20 km/s for an unreversed profile. The arrival time at a station on the north shore of the St. Lawrence River suggests that there is no major difference in velocity and depth relative to the south shore.

A Virus Disease and Introduced Parasites as Factors Controlling the European Spruce Sawfly, Diprion hercyniae (Htg.), in Central New Brunswick

1957 ◽  
Vol 89 (8) ◽  
pp. 371-378 ◽  
Author(s):  
F. T. Bird ◽  
D. E. Elgee
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
New Hampshire ◽  
Virus Disease ◽  
Spruce Forests ◽  
North Shore ◽  
The North ◽  
Gaspe Peninsula ◽  
Gaspé Peninsula ◽  
St Lawrence River

An outbreak of the European spruce sawfly, Diprion hercyniae (Htg.), was discovered in the Gaspé Peninsula in 1930. By 1938, heavy infestations had developed west of the Gaspé Peninsula in Quebec, throughout New Brunswick and northern Maine, and in parts of Vermont and New Hampshire. Moderate to light infestations occurred through all other parts of the spruce forests of this region and extended from Nova Scotia, to the north shore of the St. Lawrence River, and west to Ontario.

Control of Black Fly Larvae (Diptera: Simuliidae) in the Forests of Eastern Canada by Aircraft Spraying

1960 ◽  
Vol 92 (10) ◽  
pp. 745-754 ◽  
Author(s):  
A. S. West ◽  
A. W. A. Brown ◽  
D. G. Peterson
Keyword(s):  
Black Flies ◽  
Eastern Canada ◽  
Black Fly ◽  
North Shore ◽  
The North ◽  
Fly Larvae ◽  
And Control ◽  
St Lawrence River ◽  
Made In

The results reported in this paper are part of a study of the biology and control of black flies in the forests of Eastern Canada conducted on the north shore of the St. Lawrence River, near Baie Comeau, Quebec, during 1954, 1955, and 1956. Reference to this study is made in a review by Peterson and Wolfe (1958). The identification and biology of the black flies of this region has been reported on by Wolfe and Peterson (1959) who also describe the topography of the region. The important feature of this rugged area is an abundance of fast-flowing streams which provide highly suitable environments for the development of black-fly populations.

Control of Adult Black Flies (Diptera: Simuliidae) in the Forests of Eastern Canada by Aircraft Spraying

1960 ◽  
Vol 92 (9) ◽  
pp. 714-719 ◽  
Author(s):  
D. G. Peterson ◽  
A. S. West
Keyword(s):  
Life Histories ◽  
Black Flies ◽  
Eastern Canada ◽  
Black Fly ◽  
North Shore ◽  
The North ◽  
Fly Larvae ◽  
And Control ◽  
St Lawrence River

A study of the biology and control of black flies in the forests of Eastern Canada was conducted on the north shore of the St. Lawrence River, near Baie Comeau, Quebec, from 1954 to 1956. Reference was made to this study by Peterson and Wolfe (1958). Details on the identity of species, and studies on their life histories and habits were reported by Wolfe and Peterson (1959), while the control of black-fly larvae by aircraft spraying was described by West, Brown, and Peterson (in press). Experiments on the control of adult black flies by aircraft spraying are reported in this paper.

Late Precambrian structural evolution of Pigeon Point, Minnesota and relations to the Lake Superior syncline

1976 ◽  
Vol 13 (7) ◽  
pp. 877-888 ◽  
Author(s):  
M. G. Mudrey Jr.
Keyword(s):  
Lake Superior ◽  
Volcanic Rocks ◽  
Structural Evolution ◽  
Cook County ◽  
Tectonic Event ◽  
Late Precambrian ◽  
North Shore ◽  
Volcanic Group ◽  
The North ◽  
Tectonic Events

A sequence of semi-brittle deformational tectonic events in gently dipping middle Precambrian argillite and graywacke, and late Precambrian sandstone and volcanic rocks on the northwest coast of Lake Superior is interpreted from detailed geologic mapping in the Pigeon Point, Cook County, Minnesota area. The earliest tectonic event was broad, open folding in the middle Precambrian Rove Formation along N 35 °E axes and the development of two sets of joints (North and N 70° E). The second event was eastward trending, high-angle faulting in the Rove Formation and the disconformably overlying late Precambrian Puckwunge sandstone and North Shore Volcanic Group; the south sides moved upward relative to the north sides. These faults and associated joints were the loci of emplacement of 'early mafic' dikes of ilmenite-bearing diabase, which probably correlate with the 'Logan intrusions'. Subsequently, east-northeastward trending olivine diabase sills and dikes were emplaced in the Rove Formation and the North Shore Volcanic Group, and they cross-cut the early mafic dikes and sills. The third event occurred after cessation of igneous activity; two sets of regional joints (N 14 °W and N 53 °E) were formed, apparently as a result of fracturing accompanying initial subsidence of the so-called 'Lake Superior syncline' to the southeast. The fourth event was the development of a zone of cataclastic rock trending N 65 °E from the Pigeon Point area northeastward at least 60 km. To the north of this fracture zone, bedding in the Rove Formation dips 15–25 °SE. Copper and silver mineralization was subsequently emplaced within this fracture zone.The first three tectonic events appear to represent reactivation of structures of early Precambrian age, and appear to control the general outcrop pattern. The fourth event is an entirely Keweenawan feature, and marks the beginning of subsidence of the 'Lake Superior syncline'. It may correlate in time with the deposition of the Copper Harbor Conglomerate, and other late middle Keweenawan events.

Distribution of Enteric Bacteria in the Quebec City Section of the St-Lawrence River

1974 ◽  
Vol 9 (1) ◽  
pp. 107-114
Author(s):  
Ronald E. Simard ◽  
John A. Zee
Keyword(s):  
Fecal Coliform ◽  
Enteric Bacteria ◽  
Quebec City ◽  
Klebsiella Pneumonia ◽  
North Shore ◽  
The North ◽  
South Shore ◽  
Total Bacteria ◽  
St Lawrence River ◽  
Made In

Abstract During the summer of 1973, a survey was made in order to establish the level of enteric bacteria in the sediments and water of the St-Lawrence River. In the sediments, the number of total bacteria, yeast and mold fluctuates from station to station and with the tide. Higher counts of total and fecal coliform were encountered on the north shore than on the south shore resulting from Quebec City sewerage. The number of fecal bacteria decreased when approaching the Gulf and their number was higher at rising tide. The main species encountered were Klebsiella pneumonia, Salmonella enteridis and Escherichia spp.

Geodetic observations for the detection of vertical crustal movement

1970 ◽  
Vol 7 (2) ◽  
pp. 602-606 ◽  
Author(s):  
L. A. Gale
Keyword(s):  
Survey Methods ◽  
Geodetic Survey ◽  
Vertical Movement ◽  
Crustal Movement ◽  
Quebec City ◽  
North Shore ◽  
The North ◽  
The Stability ◽  
St Lawrence River

The significant limits within which crustal movement can be determined by geodetic survey methods depend on the quality of the observations, the stability of the markers in the network, and the structure of the network. The paper presents a study of vertical movement in the Lac St. Jean area of Québec. The data used covers the periods 1919–1938 and 1962–1966. With reference to a line of levels from Ste. Anne de la Pérade to La Malbaie along the north shore of the St. Lawrence River, the results show annual uplift as high as 10 mm at Seneterre and subsidence amounting to 4 mm at Stoneham, north of Quebec City. Confidence intervals, at the 95% level, for rates of movement are given as indicators of the quality of the results.

scholarly journals Découverte de la Salamandre à quatre orteils, Hemidactylium scutatum, à Québec, Québec : limite nord-est de l'espèce sur la rive nord du fleuve Saint-Laurent

2005 ◽  
Vol 119 (1) ◽  
pp. 129
Author(s):  
Daniel Pouliot ◽  
Jean-François Desroches
Keyword(s):  
North West ◽  
North Shore ◽  
North East ◽  
The North ◽  
St Lawrence River ◽  
Hemidactylium Scutatum

En 1999 trois spécimens de Salamandre à quatre orteils ont été observés à Québec, sur la rive nord du fleuve Saint-Laurent. Des recherches effectuées au même site en 2001 ont permis de découvrir d’autres spécimens de même que des pontes. Ces mentions élargissent la distribution connue de l’espèce de 90 km vers le nord-est-est et 80 km vers le nord-nord-ouest. Il s’agit vraisemblablement de la limite nord-est de cette salamandre, sur la rive nord du Saint-Laurent.In 1999, three Four-toed Salamanders were observed at Québec, north shore of the St. Lawrence River. Field searches in 2001 allowed the discovery of another specimen as well as egg clutches. These records extend the known range of the species 90 km north-east-east and 80 km north-north-west. This is probably the northeastern limit of this salamander’s range on the north shore of St. Lawrence River.

scholarly journals British-Canada’s Land Purchases, 1783-1788

2019 ◽  
Vol 111 (1) ◽  
pp. 36-72
Author(s):  
Gwen Reimer
Keyword(s):  
Lake Huron ◽  
War Of Independence ◽  
North Shore ◽  
The North ◽  
Indigenous Nations ◽  
Early Colonial ◽  
British Colonial ◽  
Lake Simcoe ◽  
St Lawrence River

This article examines several of the earliest land purchases in Ontario as phases in a single strategic plan by the British Crown to secure settlement lands and safe communication routes in the aftermath of the American War of Independence. Between 1783 and 1788 British colonial authorities executed a series of right-of-way and land cession agreements with Indigenous nations for lands extending from the St. Lawrence River, westward along the north shore of Lake Ontario, and northward along the historic carrying places linking Toronto, Lake Simcoe and Lake Huron. Viewing the Crawford, Gunshot, Toronto and Matchedash purchases as contiguous in time and space offers both clarity and context to a period of colonial treaty-making in Canada from which few records have survived. Archival holdings contain scant records of proceedings, deeds, maps or boundary descriptions for these treaties. For decades, Indian Affairs officials were concerned about the lack of documentation to validate the terms and extent of these land purchases and it was not until 1923 that the Gunshot and Matchedash surrenders were supposedly confirmed and the boundaries of those tracts encompassed within the terms of the Williams Treaties. For historical researchers, the determination of dates, geography and terms of early colonial treaty agreements remains a challenge. This article contributes both a broader context and greater detail about four such transactions between British authorities and Indigenous nations in southern Ontario in the eighteenth century.

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