Mesozoic and Cenozoic History of the Grand Banks of Newfoundland: Discussion

1971 ◽  
Vol 8 (12) ◽  
pp. 1606-1607
Author(s):  
C. J. Yorath ◽  
Eric R. Parker
Keyword(s):  
Grand Banks ◽  
History Of

Mesozoic and Cenozoic History of the Grand Banks of Newfoundland: Reply

1971 ◽  
Vol 8 (12) ◽  
pp. 1608-1610
Author(s):  
Grant A. Bartlett ◽  
Leigh Smith
Keyword(s):  
Grand Banks ◽  
History Of

Relict iceberg furrows on the Laurentian Channel and western Grand Banks

1976 ◽  
Vol 13 (8) ◽  
pp. 1082-1092 ◽  
Author(s):  
Lewis H. King
Keyword(s):  
Sea Level ◽  
Late Pleistocene ◽  
Northwest Atlantic ◽  
Offshore Area ◽  
Side Scan Sonar ◽  
Grand Banks ◽  
Level Curves ◽  
History Of

A side-scan sonar survey along the western bank of the Laurentian Channel and on the western Grand Banks revealed the occurrence of iceberg furrows that are probably of Late Pleistocene age. The occurrence of furrows in the Gulf of St. Lawrence is significant in that it helps to date iceberg furrows along the northeast Newfoundland–Labrador margin of the northwest Atlantic, provides data on the history of deglaciation of the offshore area of the Atlantic Provinces, provides a means of evaluating sea level curves, and provides additional evidence for the broad regional extent of the Late Pleistocene shoreline at 115 to 120 m.

Mesozoic and Cenozoic History of the Grand Banks of Newfoundland

1971 ◽  
Vol 8 (1) ◽  
pp. 65-84 ◽  
Author(s):  
Grant A. Bartlett ◽  
Leigh Smith
Keyword(s):  
Upper Cretaceous ◽  
Fine Sand ◽  
Upper Jurassic ◽  
Oceanic Circulation ◽  
Silty Mudstone ◽  
Grand Banks ◽  
History Of ◽  
Depositional Age ◽  
Sea Floor Spreading ◽  
Lime Muds

Two wells drilled by Pan American in the Grand Banks of Newfoundland gave the first stratigraphic section of Cretaceous and Cenozoic age northeast of Long Island and the only Jurassic and possible Permian sections in the Atlantic Continental Margin of North America.Integrated analysis of lithic and faunal data showed a minimum of seven sequences present. These are Pleistocene, Middle and Upper Miocene, Intra-Eocene, Paleocene and lowest Eocene, Upper Cretaceous, Middle Cretaceous, and Neocomian in age.The rocks range from halite and anhydrite, of possible Permian depositional age, to limestones, in the Upper Jurassic, lower Upper Cretaceous, mid-Eocene and mid-Miocene, and sandstones, which dominate the Neocomian, Upper Eocene, and Middle Miocene. Variable proportions of shale and silty mudstone occur throughout.The microfaunas contain both Tethyan and Boreal elements, and suggest oceanic circulation changes, sea-floor spreading, or both.Depositional environments ranged from subaerial, for the quartz arenites, through very low-land, for stream and swamp deposits, to estuarine, lagoonal, bank and open-shelf warm-marine environments, in which were deposited fine sand to clay-size terrigenous sediment, or, in its absence, skeletal carbonates or lime muds. The first dominant cooling trend appeared in the Late Miocene.All erosional environments of the hiatal episodes appear to have been subaerial and humid.A salt dome intruded the Tors Cove well section, its last movement being in mid-Early Eocene.Periodic interregional tectonic oscillations produced the erosional and depositional episodes of the major baselevel transit cycles. Their total effect is a sedimentary wedge, thickening by preservation toward the continent's edge, and representing one-half or less of Upper Mesozoic and Cenozoic time.

On the nature of the crust in the vicinity of the southeast Newfoundland Ridge

1978 ◽  
Vol 15 (9) ◽  
pp. 1462-1471 ◽  
Author(s):  
K. D. Sullivan ◽  
C. E. Keen
Keyword(s):  
Focal Point ◽  
Magnetic Data ◽  
Seismic Structure ◽  
Grand Banks ◽  
The North ◽  
Tectonic History ◽  
History Of ◽  
Continental Origin ◽  
Magnetic Lineations ◽  
Gravity And Magnetic Data

This paper presents new seismic reflection, refraction, gravity, and magnetic data bearing on the nature of the crust in the vicinity of the Newfoundland Ridge and the J-anomaly Ridge, immediately south of the Grand Banks. This area experienced a complicated plate tectonic history being the focal point for interactions of the North American, African, and Iberian plates. New data have recently been published for this region and conflicting interpretations have been offered in relation to the oceanic or continental origin of the crust there. The data presented here show that the seismic structure and the most reasonable models for the magnetic anomalies are more consistent with an oceanic origin. The trends and offsets in the magnetic lineations and possible differences in subsidence, north and south of the Newfoundland Ridge, are discussed in relation to possible modes of formation of this feature. It is proposed that similar subsidence histories since mid-Cretaceous time on the Grand Banks and J-anomaly Ridge are related to a similarity in the thermal history of the lithosphere beneath these areas, as the ridge crest migrated eastwards, and do not require the same type of crust to underlie both areas.

The Exploited Seas

2001 ◽  
Keyword(s):  
Environmental History ◽  
Life Forms ◽  
Marine Animal ◽  
Ecological Data ◽  
Historical Sources ◽  
Grand Banks ◽  
Animal Populations ◽  
History Of ◽  
And Function ◽  
Ecological Science

The book combines the approaches of maritime history and ecological science to explore the evolution of life-forms and eco-systems in the ocean from a historical perspective, in order to establish and develop the sub-discipline of marine environmental history. Documentary records relating to the human activity, such as fishing, plus naturally occurring paleo-ecological data are analysed in order to determine the structure and function of exploited ecosystems. The book is divided into four chapter groups, the first concerned with Newfoundland and Grand Banks’ fisheries, the second with the potential of historical sources to provide a history of marine animal populations, the third explores the development of fisheries in the southern hemisphere during the twentieth century, and the final section explores the limitations of data and existing analysis of whale populations. The epilogue reiterates the suggestion that collaboration between historians and biologists is the key to furthering the sub-discipline.

scholarly journals Burial and exhumation history of the Labrador- Newfoundland margin: first observations

1969 ◽  
Vol 35 ◽  
pp. 91-94
Author(s):  
Peter Japsen ◽  
Paul F. Green ◽  
Johan M. Bonow ◽  
Alana M. Hinchey ◽  
Derek H.C. Wilton
Keyword(s):  
Continental Shelf ◽  
Oil Production ◽  
Hydrocarbon Exploration ◽  
Labrador Sea ◽  
Grand Banks ◽  
History Of ◽  
Exhumation History ◽  
Offshore Petroleum

The continental shelf of Labrador and Newfoundland has a long history of hydrocarbon exploration, and the accumulated oil production from the northern Grand Banks exceeds one billion barrels (Fig.1). The Canada-Newfoundland & Labrador Offshore Petroleum Board (www.cnlopb.ca) awarded several new licenses on the northern Grand Banks in 2015 and announced licensing rounds for the Labrador Sea region in the coming years.

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