Palaeontological Material From the Devonian and Lower Carboniferous of New Brunswick

1909 ◽  
Author(s):  
W J Wilson
Keyword(s):  
New Brunswick ◽  
Lower Carboniferous

A spectrum of alluvial deposits in the Lower Carboniferous Bonaventure Formation of western Chaleur Bay area, Gaspé and New Brunswick, Canada

1983 ◽  
Vol 20 (7) ◽  
pp. 1098-1110 ◽  
Author(s):  
Brian A. Zaitlin ◽  
Brian R. Rust
Keyword(s):  
New Brunswick ◽  
Alluvial Fan ◽  
Alluvial Fans ◽  
Alluvial Deposits ◽  
Lower Carboniferous ◽  
Bay Area ◽  
Internal Structures ◽  
Sandstone Facies ◽  
Fault Scarps ◽  
Steep Slopes

The Lower Carboniferous Bonaventure Formation of western Chaleur Bay, Gaspé and New Brunswick, is a terrestrial redbed succession with abundant calcretes, deposited in a semi-arid paleoclimate. Facies can be grouped into three associations, conglomeratic, sandstone, and mud-dominated, within two 100–150 m upward-fining megasequences. The megasequences are attributed to alluvial fan progradation due to tectonic rejuvenation.Vertical facies relationships and internal structures indicate that varied alluvial environments are represented. Alluvial fans formed on steep slopes adjacent to fault scarps and are dominated by deposits of the conglomeratic association. Lateral and downslope coalescence of fans into a braid plain is represented by transition from the conglomeratic to the sandstone facies association. Distally, the braid plain is transitional into deposits of the mud-dominated association.Paleocurrents and clast compositions show that sediment in the Gaspé outcrops was derived from the northwest, and that in New Brunswick from the southwest. This indicates that Chaleur Bay is an exhumed Carboniferous paleovalley, with axial drainage to the east.

Deformation history in part of the Lubec–Belleisle zone of southern New Brunswick

1970 ◽  
Vol 7 (3) ◽  
pp. 748-767 ◽  
Author(s):  
R. L. Brown ◽  
H. Helmstaedt
Keyword(s):  
New Brunswick ◽  
Middle Devonian ◽  
Maximum Principal Stress ◽  
Upper Devonian ◽  
Second Phase ◽  
Lower Carboniferous ◽  
The North ◽  
Principal Compressive Stress ◽  
Two Phases ◽  
Paleozoic Rocks

Rocks of the Proterozoic Coldbrook Group on the north shore of the Bay of Fundy, New Brunswick, are bounded to the north by a major northeast trending fault (Lubec–Belleisle). North of the fault Paleozoic rocks of the Mascarene Group are overlain unconformably by Upper Devonian and Lower Carboniferous strata.Both the Coldbrook and Mascarene Groups have been deformed by three phases of deformation. Deformation of the two Groups was coeval; penetrative fabrics first developed during the Acadian (Middle Devonian) orogeny.Pre-Acadian Paleozoic movements were limited to local or regional uplift with possible attendant warping and/or gentle tilting.Mylonitic fabrics formed in Coldbrook rocks during the first two phases of the Acadian polyphase deformation. These northeast trending s- surfaces lie normal to the direction of maximum finite shortening. Also from the orientation of synmylonization quartz deformation lamellae of the second phase, it is apparent that the local trajectory of the maximum principal stress was normal to the s-surfaces of the mylonites.No evidence for major northeast–southwest strike slip faulting has been found. Fracture analyses in Upper Devonian and Lower Carboniferous rocks in the northeast trending fault zone, point to a northwest trending principal compressive stress.It is contended that the bulk of the ductile strain (first two phases) occurred In response to northwest principal compressive stress during the Middle Devonian, and these stresses were re-established in post-Devonian times, resulting in the development of high angle oblique to dip slip movements on the northeast trending faults.

The distribution of Schramocaris (Eumalacostraca, Crustacea) along the northwestern coast of the Rheic Ocean during the Lower Carboniferous

2016 ◽  
Vol 107 (2-3) ◽  
pp. 91-98 ◽  
Author(s):  
Neil D. L. Clark ◽  
Randall F. Miller ◽  
Andrew J. Ross
Keyword(s):  
New Species ◽  
New Brunswick ◽  
Relative Position ◽  
Eastern Canada ◽  
Lower Carboniferous ◽  
Shallow Marine ◽  
Rheic Ocean ◽  
Two New Species ◽  
Northwestern Coast

ABSTRACTTwo new species of Schramocaris from the Viséan, Lower Carboniferous of Scotland and eastern Canada extend the range and distribution of this crustacean along the northwestern coast of the Rheic Ocean. New species from Glencartholm, southern Scotland and Upperton, New Brunswick, Canada represents the first recognised occurrence of this genus in Scotland and Canada. The Scottish species is here named S. clarksoni; it lacks the rugosity of the carinae of Schramocaris gilljonesorum, but has the same relative position of the carinae, as well as similar characteristics of the pleon, such as the relative lengths of the somites and the shape of the telson. The Canadian species is named Schramocaris matthewi on the basis of the papillations on the cuticle and robust second carinae of the carapace. The deposits at both these localities are that of a shallow marine argillaceous environment, although the Glencartholm deposit contains more lime. Schramocaris has previously only been known from the Avon Group (Hastarian) of the Forest of Dean, England.

scholarly journals The lower actinopterygian fauna from the Lower Carboniferous Albert shale formation of New Brunswick, Canada – a review of previously described taxa and a description of a new genus and species

Fossil Record ◽  
2017 ◽  
Vol 20 (1) ◽  
pp. 47-67 ◽  
Author(s):  
Kathryn E. Mickle
Keyword(s):  
New Brunswick ◽  
New Genus ◽  
New Genus And Species ◽  
Type Specimens ◽  
Lower Carboniferous ◽  
Taxonomic History ◽  
Dorsal Ridge ◽  
History Of ◽  
Shale Formation ◽  
Being Moved

Abstract. The Lower Carboniferous Albert shale formation of New Brunswick, Canada, is well-known for the preservation of countless articulated lower actinopterygian palaeoniscoid fishes. This site is at the boundary between the Devonian and the Lower Carboniferous, making the lower actinopterygians preserved at this site important. The taxonomic history of previously described Albert shale formation actinopterygians is reviewed here. Many of the earliest described actinopterygian taxa from the Albert Formation are represented by poorly preserved type specimens and have the distinction of being moved from one paraphyletic genus to another paraphyletic genus. While these taxa are in need of major redescriptions, such work is premature until the large paraphyletic or polyphyletic genera they have been placed in, Palaeonicus[m], †Rhadinichthys, and †Elonichthys, are redescribed. But there is new diversity within the Albert shale formation. Here, a new lower actinopterygian species, †Lambeia pectinatus, is described from one well-preserved specimen. This new species is characterized by dorsal ridge scales with pectinated posterior margins, body scales inserted between adjacent dorsal ridge scales, body scales with pectinated posterior and ventral margins, the presence of a ventral rostro-premaxilla and a median rostral bone, a separate and distinct antorbital bone, and a single supraorbital bone. This newly described species is distinct from previously described fishes from the Albert Formation, and the morphology of this newly described species is more similar to later Carboniferous fishes rather than Devonian fishes. This suggests that morphological features commonly seen in Carboniferous fishes and rarely seen in Devonian fishes were present early in the Carboniferous.

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