The Eastport Formation (Lower Devonian) in the northern Passamaquoddy Bay area, southwest New Brunswick

1976 ◽  
Vol 13 (2) ◽  
pp. 266-270 ◽  
Author(s):  
R. K. Pickerill ◽  
G. E. Pajari Jr.
Keyword(s):  
New Brunswick ◽  
Lower Devonian ◽  
Northern Coast ◽  
The West ◽  
Bay Area ◽  
Passamaquoddy Bay ◽  
Stratigraphic Position

Previous interpretations of the stratigraphic position of a series of volcanic and sedimentary strata along the northern coast of Passamaquoddy Bay, New Brunswick, are somewhat enigmatic. Recent fieldwork has indicated that the sequence is a lithostratigraphic, biostratigraphic, and most probably a chronostratigraphic equivalent to the Eastport Formation (Gedinnian) of Maine, located a few kilometres to the west. It is proposed that henceforth, the succession be termed the Eastport Formation.

scholarly journals Seafloor pockmarks and gas seepages, northwestern Bay of Fundy, New Brunswick, Canada

2018 ◽  
pp. 001-020 ◽  
Author(s):  
Bruce E. Broster ◽  
Christine L. Legere
Keyword(s):  
New Brunswick ◽  
Seismic Reflection ◽  
Bay Of Fundy ◽  
Northern Coast ◽  
Terrestrial Vegetation ◽  
Seismic Profiles ◽  
Eastern Canada ◽  
Biogenic Methane ◽  
Glacier Recession ◽  
Passamaquoddy Bay

Bathymetric images of linear and circular pockmark depressions on the Bay of Fundy seafloor, offshore eastern Canada, are interpreted to have been caused by escaping gas from underlying sediment or bedrock. Shallow interstitial gas within marine sediments restricts seismic reflection imaging (acoustic masking) of sub-bottom units resulting in obscured reflections within seismic profiles, confirming that interstitial gas is present in the underlying units. Pockmark fields are frequent in several bays and shallow coastal areas along the northern coast of the Bay of Fundy. The largest field containing over 10 000 pockmarks occurs in Passamaquoddy Bay, an estuary underlain by igneous and metamorphic bedrock. These features are interpreted to be caused by generation of biogenic methane from the microbial breakdown of organic matter buried within Holocene-age sediments and along the underlying Pleistocene/Holocene unconformity. The unconformity is recorded as a distinctive horizon that represents a time when glacier recession resulted in exposure of parts of the bay to sub-aerial erosion and growth of terrestrial vegetation at locations subsequently submerged by post-glacial transgression. Three areas of potential thermogenic gas occurrence were identified in seismic profiles collected south and east of The Wolves islands, New Brunswick. The underlying bedrock has not yet been precisely mapped, although outliers of Carboniferous-age bedrock that is the major petroleum source in New Brunswick may extend into this area of the Bay of Fundy.

IV.—Note on the Correlation of Some Cornish Beds With The Gedinnian of Continental Europe

1904 ◽  
Vol 1 (8) ◽  
pp. 403-407
Author(s):  
Upfield Green
Keyword(s):  
Lower Devonian ◽  
The West ◽  
The North ◽  
Full Development

The group of beds which I propose to identify and correlate with those known in France, Germany, and Belgium by the name of ‘Gedinnien,’ forming the lowest member of the Devonian system, extends in its full development from the Lizard peninsula in the west to Gorran and St. Austell on the east, and thence to near Newquay on the north. The upper beds, at least, may be traced through Fowey and Looe along the coast, and across the Start peninsula as far as Babbacombe, south of Dartmouth in Devonshire. They are referred to by Ussher as ‘Dartmouth Slates.’ They exist also on the north of the Devonian basin, and are mentioned by Etheridge as underlying the Lower Devonian.

Herring Fishery in Southern New Brunswick

1960 ◽  
Vol 17 (2) ◽  
pp. 133-168
Author(s):  
R. A. McKenzie ◽  
S. N. Tibbo
Keyword(s):  
New Brunswick ◽  
Tidal Power ◽  
Annual Variations ◽  
Significant Relationships ◽  
Passamaquoddy Bay

Most of the herring taken in the Passamaquoddy area of southern New Brunswick are caught in stationary weirs built close to shore. Analyses of weir catches show no significant relationships between average catches inside Passamaquoddy Bay and catches in outside areas for the same year. Weirs inside Passamaquoddy Bay are more efficient and catch about twice as many herring per weir as those outside the Bay.Seasonal and annual variations both in individual weir catches and in total catches in the various statistical districts of Charlotte County are far greater now than any changes that can be forecast as resulting from the installation of the proposed Passamaquoddy tidal power dams.

BIOCONTROL OF THE WEED CANADA THISTLE (CIRSIUM ARVENSE): RELEASES AND DEVELOPMENT OF THE GALL FLY UROPHORA CARDUI (DIPTERA: TEPHRITIDAE) IN CANADA

1982 ◽  
Vol 114 (4) ◽  
pp. 349-357 ◽  
Author(s):  
D. P. Peschken ◽  
D. B. Finnamore ◽  
A. K. Watson
Keyword(s):  
New Brunswick ◽  
Cirsium Arvense ◽  
Winter Mortality ◽  
Western Canada ◽  
Canada Thistle ◽  
Main Shoot ◽  
The West ◽  
The Impact

AbstractThe gall fly Urophora cardui (L.) (Diptera: Tephritidae), native to Europe, was released at 24 locations across Canada beginning in 1974. It became established in Ontario, Quebec, and New Brunswick but died out in all but one location in western Canada. Evidence for winter mortality in the west does not explain the failure of these colonies. Although galls, in particular those on the main shoot, reduce the height of Canada thistle, so far the impact on the host weed, Canada thistle (Cirsium arvense) (L.) Scop., is slight.

Lower Cambrian (Branchian) trilobites and biostratigraphy of the Hanford Brook Formation, southern New Brunswick

2000 ◽  
Vol 74 (5) ◽  
pp. 858-878 ◽  
Author(s):  
Stephen R. Westrop ◽  
Ed Landing
Keyword(s):  
New Species ◽  
Nova Scotia ◽  
North America ◽  
New Brunswick ◽  
Lower Cambrian ◽  
Early Cambrian ◽  
The West ◽  
Middle Cambrian ◽  
Sequence Stratigraphic ◽  
Two New Species

The Hanford Brook Formation, one of the classic Cambrian units of Avalonian North America, contains at least eight species of endemic trilobites, including Berabichia milleri Westrop n. sp., that are assigned to seven genera. The vertical succession of faunas is far more complex than has been recognized previously, with each member containing a lithofacies-specific assemblage. These are, in ascending order: a bradoriid-linguloid Association without trilobites in the nearshore St. Martin's Member, a Protolenus Association in dysaerobic siltstones and sandstones of the Somerset Street Member, and a Kingaspidoides-Berabichia Association in hummocky cross-stratified sandstones of the Long Island Member that overlie a parasequence boundary at Hanford Brook. Due to the breakdown of biogeographic barriers in the late Early Cambrian, two new species-based zones, the Protolenus elegans and Kingaspidoides cf. obliquoculatus zones, share trilobite genera with the Tissafinian Stage of Morocco. This generic similarity has been the basis for correlation of this upper Lower Cambrian interval on the Avalon continent with the West Gondwanan lowest Middle Cambrian. However, the clear facies control on the occurrence of genera in the Hanford Brook Formation and the presence of an abrupt faunal break and unconformity at the base of the Tissafinian in Morocco makes this correlation questionable. The Hanford Brook Formation may represent a late Early Cambrian interval unknown in Gondwana. Sequence-stratigraphic criteria even raise the possibility that the Protolenus Association is the biofacies equivalent of Callavia broeggeri Zone faunas of the Brigus Formation of Newfoundland, Nova Scotia and Massachusetts.

Sign in / Sign up

Export Citation Format

Share Document