Provenance of Mesozoic and Cenozoic sediments from the Labrador and western Greenland continental margins
Forty-two Cretaceous and Paleocene sand samples from offshore Labrador and onshore western Greenland were examined petrographically. The sands were found to be mineralogically and texturally immature, reflecting rapid erosion and transportation from local, high-relief source areas. The principal sou...
Published in: | Canadian Journal of Earth Sciences |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
1978
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/e78-192 http://www.nrcresearchpress.com/doi/pdf/10.1139/e78-192 |
id |
crcansciencepubl:10.1139/e78-192 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/e78-192 2023-12-17T10:27:36+01:00 Provenance of Mesozoic and Cenozoic sediments from the Labrador and western Greenland continental margins Higgs, Roger 1978 http://dx.doi.org/10.1139/e78-192 http://www.nrcresearchpress.com/doi/pdf/10.1139/e78-192 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 15, issue 11, page 1850-1860 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1978 crcansciencepubl https://doi.org/10.1139/e78-192 2023-11-19T13:38:50Z Forty-two Cretaceous and Paleocene sand samples from offshore Labrador and onshore western Greenland were examined petrographically. The sands were found to be mineralogically and texturally immature, reflecting rapid erosion and transportation from local, high-relief source areas. The principal source-rock types were acidic plutonics and amphibolite-facies metasediments and metavolcanics. Basic igneous rocks provided minor quantities of detritus, whereas contributions from sedimentary and low-grade-metamorphic sources were negligible. Cretaceous and Paleocene sediment transport was essentially perpendicular to the axis of the 'Labrador–Baffin rift system.In view of the apparent local abundance of amphibolite-facies supracrustal rocks during the Cretaceous and Paleocene, extensive post-Paleocene denudation in Labrador, Baffin Island, and western Greenland is invoked to account for the present scarcity of such rock types. Article in Journal/Newspaper Baffin Island Baffin Greenland Canadian Science Publishing (via Crossref) Baffin Island Greenland Canadian Journal of Earth Sciences 15 11 1850 1860 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Higgs, Roger Provenance of Mesozoic and Cenozoic sediments from the Labrador and western Greenland continental margins |
topic_facet |
General Earth and Planetary Sciences |
description |
Forty-two Cretaceous and Paleocene sand samples from offshore Labrador and onshore western Greenland were examined petrographically. The sands were found to be mineralogically and texturally immature, reflecting rapid erosion and transportation from local, high-relief source areas. The principal source-rock types were acidic plutonics and amphibolite-facies metasediments and metavolcanics. Basic igneous rocks provided minor quantities of detritus, whereas contributions from sedimentary and low-grade-metamorphic sources were negligible. Cretaceous and Paleocene sediment transport was essentially perpendicular to the axis of the 'Labrador–Baffin rift system.In view of the apparent local abundance of amphibolite-facies supracrustal rocks during the Cretaceous and Paleocene, extensive post-Paleocene denudation in Labrador, Baffin Island, and western Greenland is invoked to account for the present scarcity of such rock types. |
format |
Article in Journal/Newspaper |
author |
Higgs, Roger |
author_facet |
Higgs, Roger |
author_sort |
Higgs, Roger |
title |
Provenance of Mesozoic and Cenozoic sediments from the Labrador and western Greenland continental margins |
title_short |
Provenance of Mesozoic and Cenozoic sediments from the Labrador and western Greenland continental margins |
title_full |
Provenance of Mesozoic and Cenozoic sediments from the Labrador and western Greenland continental margins |
title_fullStr |
Provenance of Mesozoic and Cenozoic sediments from the Labrador and western Greenland continental margins |
title_full_unstemmed |
Provenance of Mesozoic and Cenozoic sediments from the Labrador and western Greenland continental margins |
title_sort |
provenance of mesozoic and cenozoic sediments from the labrador and western greenland continental margins |
publisher |
Canadian Science Publishing |
publishDate |
1978 |
url |
http://dx.doi.org/10.1139/e78-192 http://www.nrcresearchpress.com/doi/pdf/10.1139/e78-192 |
geographic |
Baffin Island Greenland |
geographic_facet |
Baffin Island Greenland |
genre |
Baffin Island Baffin Greenland |
genre_facet |
Baffin Island Baffin Greenland |
op_source |
Canadian Journal of Earth Sciences volume 15, issue 11, page 1850-1860 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e78-192 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
15 |
container_issue |
11 |
container_start_page |
1850 |
op_container_end_page |
1860 |
_version_ |
1785579481497337856 |