Abstract
The high-grade gneisses of the Archean Nain Province were formed through Early and Late Archean orogenic cycles. Late Archean structural development consisted of pre-thermal-peak isoclinal folding and thrusting in allochthonous Upernavik supra-crustal rocks, followed by regional, recumbent, isoclinal folding and upright refolding of the Upernavik suite and reworked Early Archean gneisses under amphibolite- to granulite-facies conditions. Style and sequence of the Late Archean structures closely resemble those described by previous workers from the Early Archean gneiss complex of the North Alantic craton, from Precambrian greenstone belts, and from Phanerozoic orogenic belts, suggesting that no principal differences exist in the structural evolution of these types of terrain. -Authors
| Original language | English |
|---|---|
| Pages (from-to) | 231-237 |
| Number of pages | 7 |
| Journal | Geoscience Canada |
| Volume | 17 |
| Issue number | 4 |
| Publication status | Published - Jan 1 1990 |
| Externally published | Yes |
Fingerprint
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
Cite this
Late Archean geologic history of the Nain Province, North River- Nutak map area, Labrador, and its tectonic significance. / Van Kranendonk, Martin; Helmstaedt, H.
In: Geoscience Canada, Vol. 17, No. 4, 01.01.1990, p. 231-237.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Late Archean geologic history of the Nain Province, North River- Nutak map area, Labrador, and its tectonic significance
AU - Van Kranendonk, Martin
AU - Helmstaedt, H.
PY - 1990/1/1
Y1 - 1990/1/1
N2 - The high-grade gneisses of the Archean Nain Province were formed through Early and Late Archean orogenic cycles. Late Archean structural development consisted of pre-thermal-peak isoclinal folding and thrusting in allochthonous Upernavik supra-crustal rocks, followed by regional, recumbent, isoclinal folding and upright refolding of the Upernavik suite and reworked Early Archean gneisses under amphibolite- to granulite-facies conditions. Style and sequence of the Late Archean structures closely resemble those described by previous workers from the Early Archean gneiss complex of the North Alantic craton, from Precambrian greenstone belts, and from Phanerozoic orogenic belts, suggesting that no principal differences exist in the structural evolution of these types of terrain. -Authors
AB - The high-grade gneisses of the Archean Nain Province were formed through Early and Late Archean orogenic cycles. Late Archean structural development consisted of pre-thermal-peak isoclinal folding and thrusting in allochthonous Upernavik supra-crustal rocks, followed by regional, recumbent, isoclinal folding and upright refolding of the Upernavik suite and reworked Early Archean gneisses under amphibolite- to granulite-facies conditions. Style and sequence of the Late Archean structures closely resemble those described by previous workers from the Early Archean gneiss complex of the North Alantic craton, from Precambrian greenstone belts, and from Phanerozoic orogenic belts, suggesting that no principal differences exist in the structural evolution of these types of terrain. -Authors
UR - http://www.scopus.com/inward/record.url?scp=0025638065&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0025638065&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0025638065
VL - 17
SP - 231
EP - 237
JO - Geoscience Canada
JF - Geoscience Canada
SN - 0315-0941
IS - 4
ER -