New tectonic divisions of the Grenville Province, Southeast Canadian Shield
Abstract
On the basis of geological, geophysical, and geochronological data, the Grenville Province has been divided into three first‐order longitudinal belts, the Parautochthonous Belt (PB), Allochthonous Polycyclic Belt (APB), and Allochthonous Monocyclic Belt (AMB). These are set apart by three first‐order tectonic boundaries, the Grenville Front (GF), Allochthon Boundary Thrust (ABT), and Monocyclic Belt Boundary Zone (MBBZ). The belts are subdivided into terranes based on internal lithological character. The GF separates the Archean to Proterozoic foreland northwest of the orogen from reworked equivalents to the southeast. Continuous at the scale of the orogen, its main characteristic is that of a crustal‐scale contraction fault. The PB, although less clearly identified along the length of the orogen, in most places represents upgraded and tectonically reworked rocks of the adjacent foreland. The boundary between the PB and the APB to the southeast, the ABT, is most clearly delineated in the eastern half of the province. It is the locus of major crustal delamination along which high‐grade, mostly middle Proterozoic, polycyclic terranes were tectonically transported northwest toward and onto the PB. The AMB comprises two separate areas underlain by the Wakeham Supergroup and what is currently known as the Grenville Supergroup, respectively; its basal contact, the MBBZ, is a décollement zone of variable kinematic significance between older polycyclic rocks and tectonically overlying monocyclic rocks. This first‐order zonation implies a tectonic polarity to the Grenville Province, superimposed on which are second‐order features evident from contrasting tectonic styles and radiometric ages. These characteristics are consistent with a diachronous or oblique collisional model for the Grenville orogen.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Rivers et al. (1989) originally distinguished two allochthonous belts on the basis of the presence or absence of a pre-Elzevirian and (or) Grenvillian metamorphic history.
“Rivers et al. (1989) originally distinguished two allochthonous belts on the basis of the presence or absence of a pre-Elzevirian and (or) Grenvillian metamorphic history.”
From The High Pressure belt in the Grenville Province: architecture, timing, and exhumation (2002) · cites this paper as Rivers et al. (1989)
All three belts were defined on the basis of their Grenvillian tectonometamorphic signatures.
“All three belts were defined on the basis of their Grenvillian tectonometamorphic signatures (Rivers et al. 1989; Ludden and Hynes 2000).”
From The High Pressure belt in the Grenville Province: architecture, timing, and exhumation (2002) · cites this paper as Rivers et al. 1989
Carr et al. (2000) subdivided the Allochthonous Monocyclic belt of Rivers et al. (1989) into the 'Composite Arc belt' and the 'Frontenac-Adirondack belt.'
“Carr et al. (2000) subdivided the Allochthonous Monocyclic belt of Rivers et al. (1989) into the 'Composite Arc belt' and the 'Frontenac-Adirondack belt.'”
From The High Pressure belt in the Grenville Province: architecture, timing, and exhumation (2002) · cites this paper as Rivers et al. (1989)
The lower boundary of the HP belt is the Allochthon Boundary thrust.
“The lower boundary, known as the Allochthon Boundary thrust, was originally defined by Rivers et al. (1989), although its precise location has been revised slightly in Fig. 1 (see figure caption for details).”
From The High Pressure belt in the Grenville Province: architecture, timing, and exhumation (2002) · cites this paper as Rivers et al. (1989)
Molson Lake terrane is now considered part of the HP belt on the basis of its metamorphic signature.
“Molson Lake terrane, formerly included in the Parautochthonous belt by Rivers et al. (1989), is now considered part of the HP belt on the basis of its metamorphic signature (see caption, Fig. 1).”
From The High Pressure belt in the Grenville Province: architecture, timing, and exhumation (2002) · cites this paper as Rivers et al. 1989
The Grenville Front is the trace of a series of southeast-dipping thrust or reverse faults that place higher grade rocks of the Parautochthonous belt on lower grade equivalents in the foreland to the northwest.
“The Grenville Front , the northwestern boundary of the Grenville Province, is the trace of a series of southeast-dipping thrust or reverse faults that place higher grade rocks of the Parautochthonous belt on lower grade equivalents in the foreland to the northwest (Rivers et al. 1989).”
From The High Pressure belt in the Grenville Province: architecture, timing, and exhumation (2002) · cites this paper as Rivers et al. 1989
There is no such gravity anomaly in the western Grenville Province.
“whereas there is no such gravity anomaly in the western Grenville Province (e.g., Rivers et al. 1989; Hynes 1994).”
From The High Pressure belt in the Grenville Province: architecture, timing, and exhumation (2002) · cites this paper as Rivers et al. 1989
There is a negative gravity anomaly, the Grenville Front gravity low, under the Parautochthonous belt in the central Grenville Province.
“(9) There is a negative gravity anomaly, the Grenville Front gravity low, under the Parautochthonous belt in the central Grenville Province”
From The High Pressure belt in the Grenville Province: architecture, timing, and exhumation (2002) · cites this paper as Rivers et al. 1989
Cites
Hanmer, S. K., & Ciesielski, A. (1984) · doi:10.4095/119568 · Cited by 38 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Mahapatro, S. N., Pant, N. C., Bhowmik, S. K., Tripathy, A. K., & Nanda, J. K. (2012) · Geological Journal · doi:10.1002/gj.1311 · Cited by 57 · see citing works
Duesterhoeft, E., Raase, P., Duguet, M., & Easton, R. M. (2021) · Canadian Journal of Earth Sciences · doi:10.1139/cjes-2019-0238 · Cited by 4 · see citing works
The High Pressure belt in the Grenville Province: architecture, timing, and exhumation
Rivers, T., Ketchum, J., Indares, A., & Hynes, A. (2002) · Canadian Journal of Earth Sciences · doi:10.1139/e02-025 · Cited by 124 · see citing works
Self-citation
- Authors
- Rivers, T., Martignole, J., Gower, C. F., & Davidson, A.
- ORCID
- Rivers, T.
- Venue
- Tectonics
- Publisher
- American Geophysical Union (AGU)
- Published
- 1989-02
- Volume
- 8
- Issue
- 1
- Pages
- 63-84
- ISSN
- 0278-7407 (ISSN-L)
- 1944-9194
- OpenAlex
- W2026387367
- Cited by
- 383
- References
- 1
- Citations by year
- 2026: 3 · 2025: 10 · 2024: 10 · 2023: 5 · 2022: 11 · 2021: 5 · 2020: 11 · 2019: 6 · 2018: 10 · 2017: 9 · 2016: 4 · 2015: 10 · 2014: 13 · 2013: 8 · 2012: 8
- FWCI
- 11.42
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Tectonics (publishedVersion)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Geochemical Analysis
- Physical Sciences › Earth and Planetary Sciences › Geology › Geological Studies and Exploration
- Physical Sciences › Earth and Planetary Sciences › Geology › Geological and Geophysical Studies
- Keywords
- Grenville Province, Grenville Front, crustal delamination, décollement, oblique collision, terranes
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
