Tectonostratigraphic terrane analysis of New Brunswick

Fyffe, L. R.; Fricker, A.

doi:10.4138/1626

Cited by 58 publications

(61 citation statements)

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“…Contemporaneous extension along the Gondwanan margin and Kerr 1997). The adjacent Brookville and New River terranes are considered by some workers to also be part of an Avalon Composite terrane in the sense that it is defined to include basement rocks once thought to have a continuous overlapping platformal sequence represented by the Saint John Group (Currie 1986(Currie , 1988Nance 1986, Nance et al 1991aFyffe and Fricker 1987;Landing 1996a, b;Currie and McNicoll 1999;Westrop and Landing 2000;Landing and MacGabhann 2010). Others exclude the Brookville and New River terranes from Avalonia.…”

Section: Geological Overview Of New Brunswick Terranesmentioning

confidence: 99%

“…3) (McKerrow and Zeigler 1971;Fyffe and Miller 1992;Han and Pickerill 1994a;Fyffe 1995). These Silurian strata were referred to as the Fredericton Cover Sequence by Fyffe and Fricker (1987). Medium-to thick-bedded, feldspathic wacke beds of the Digdeguash Formation, exposed at the base of the Kingsclear Group, display well-developed Bouma sequences.…”

Section: Fredericton Troughmentioning

confidence: 99%

“…It was previously referred to as the Mascarene terrane by Fyffe and Fricker (1987), because the nature of the basement rocks beneath the Silurian Mascarene cover was poorly known at the time (Hay 1968;Rast and Currie 1976). Basement rocks of the New River terrane trend toward coastal Maine, where they may underlie Penobscot volcanic rocks of the Ellsworth terrane (Stewart et al 1995;Fyffe et al 2009).…”

Section: New River Terranementioning

confidence: 99%

“…These terranes, following the concept of Williams (1978Williams ( , 1979, were distinguished on the basis of their distinctive Lower Paleozoic lithotectonic sequences as compared with adjacent fault blocks. The gathering of much new information since the publication of Fyffe and Fricker (1987) has resulted in the recognition of additional terranes in New Brunswick, those being the Popelogan terrane of northern New Brunswick; and the Caledonia, Brookville, New River, and Annidale terranes of southern New Brunswick (Figs. 2, 3).…”

Section: Introductionmentioning

confidence: 99%

“…Subsequently, Fyffe and Fricker (1987) applied the terrane concept of Coney et al (1980) to better constrain the timing of tectonic events in the various zones by introducing the terms Avalonian, Mascarene, St. Croix, Miramichi, and Elmtree terranes (Figs. 2, 3).…”

Section: Introductionmentioning

confidence: 99%

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A Review of Proterozoic to Early Paleozoic Lithotectonic Terranes in New Brunswick, Canada and their Tectonic Evolution during Penobscot, Taconic, Salinic and Acadian Orogenesis

Fyffe

Johnson²,

Staal

2012

atgeol

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Geological relationships preserved in the New Brunswick segment of the Appalachian orogen are key to deciphering the complex tectonic events that occurred during the closing of the Paleozoic Iapetus Ocean. These events can be explained in terms of geodynamic interactions between eight lithotectonic terranes. The first, the Caledonia terrane, comprises Neoproterozoic volcanic arc sequences and comagmatic plutons considered to form part of the microcontinent of Avalonia. The seven other terranes are associated with the microcontinent of Ganderia and consist of (1) Brookville terrane-Mesoproterozoic to Neoproterozoic platformal carbonates and Neoproterozoic to Early Cambrian plutonic rocks, (2) New River terrane-Neoproterozoic volcanic arc sequences and comagmatic plutons overlain by a Cambrian Penobscot volcanic arc sequence, In New Brunswick, closure of the Iapetus Ocean is attributed to four major tectonic episodes: (1) the Penobscot orogeny, which accreted the Miramichi, Annidale, and St. Croix terranes to the New River terrane on the trailing edge of Ganderia by closing a Penobscot backarc basin in the Early Ordovician, (2) the Taconic orogeny, which accreted the Popelogan terrane on the leading edge of Ganderia to the Laurentian margin in the Late Ordovician and effectively closed the main tract of the Iapetus Ocean, (3) the Salinic orogeny, which accreted the Elmtree and Miramichi terranes to the Laurentian margin by closing the Tetagouche backarc basin in the Silurian, and (4) the Acadian orogeny, which accreted the Caledonia terrane (Avalonia) to the Brookville and New River terranes on the trailing edge of Ganderia in the latest Silurian to earliest Devonian and in the process closed the last remaining oceanic tract in the northeastern Appalachians. RÉSUMÉLes corrélations géologiques préservées dans la partie du Nouveau-Brunswick de l'orogène des Appalaches sont essentielles pour bien comprendre le déroulement des événements tectoniques complexes survenus au moment de la fermeture de l'océan Iapetus, pendant le Paléozoïque. Il est possible d'expliquer ces événements par des interactions géodynamiques entre huit terranes lithotectoniques. Le premier, soit le terrane calédonien, comprend des séquences d'arc volcanique et des plutons comagmatiques du Néoprotérozoïque dont on estime qu'ils faisaient partie du microcontinent Avalonia. Les sept autres terranes sont associés au microcontinent Ganderia et comprenaient les terranes que voici : (1)

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Section: Geological Overview Of New Brunswick Terranesmentioning

confidence: 99%

Section: Fredericton Troughmentioning

confidence: 99%

Section: New River Terranementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Review of Proterozoic to Early Paleozoic Lithotectonic Terranes in New Brunswick, Canada and their Tectonic Evolution during Penobscot, Taconic, Salinic and Acadian Orogenesis

Fyffe

Johnson²,

Staal

2012

atgeol

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Avalonian proximity of the Ordovician Miramichi Terrane, northern New Brunswick, northern Appalachians: Paleomagnetic evidence for rifting and back-arc basin formation at the southern margin of Iapetus

1993

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A paleomagnetic investigation of the Middle Ordovician Tetagouche Group in northern New Brunswick was undertaken to determine the paleogeo~aphi~ position of the Miramichi Terrane. Stepwise thermal demagnetization of pillow basahs reveals a high-temperature characteristic ~gnet~tion with a mean direction of B = W, Z = +69", k = 22, aas = 13" (tih-corrected, N= 7 sites; 73 samples). A positive fold test and the presence of antipodal normal and reversed polarity directions indicate that this ancient direction is Ordovician in age, with a paleopole position of 52"N, 352"E. The corresponding pateolatitude of 535 places these vokanic rocks near the southern margin of the Iapetus Ocean, at paleolatitudes similar to those revealed by Avalon for the Middle to Late Ordovician. The mafic and felsic volcanic rocks and marine sedimentary rocks of the Tetagouche and Fournier groups have been interpreted to be remnants of a rifted continental margin and a Middle Ordovician back-arc basin. Our results show that the process of rifting and back-arc basin formation occurred at the Avalonian margin of Iapetus, which implies that Ordovician subduction was not restricted to the Laurentian margin, but also marks the southern margin of Japetus.

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Comparison of humus and till as prospecting material in areas of thick overburden and multiple ice-flow events: An example from northeastern New Brunswick

Broster

Dickson

Parkhill³

2009

Journal of Geochemical Exploration

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Tectonostratigraphic terrane analysis of New Brunswick

Cited by 58 publications

References 0 publications

A Review of Proterozoic to Early Paleozoic Lithotectonic Terranes in New Brunswick, Canada and their Tectonic Evolution during Penobscot, Taconic, Salinic and Acadian Orogenesis

A Review of Proterozoic to Early Paleozoic Lithotectonic Terranes in New Brunswick, Canada and their Tectonic Evolution during Penobscot, Taconic, Salinic and Acadian Orogenesis

Avalonian proximity of the Ordovician Miramichi Terrane, northern New Brunswick, northern Appalachians: Paleomagnetic evidence for rifting and back-arc basin formation at the southern margin of Iapetus

Comparison of humus and till as prospecting material in areas of thick overburden and multiple ice-flow events: An example from northeastern New Brunswick

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