Tectonostratigraphic evolution of the Labrador margin, Atlantic Canada

doi:10.1016/j.marpetgeo.2011.05.009

	Tectonostratigraphic evolution of the Labrador margin, Atlantic Canada
	Dickie, Kate; Keen, Charlotte E.; Williams, Graham L.; Dehler, Sonya A.
刊名	MARINE AND PETROLEUM GEOLOGY
	2011-09
卷号	28 期号:9 页码:1663-1675
关键词	Labrador margin Hopedale basin Tectonics Non-volcanic Magma-poor Stratigraphy Unconformity Inversion
ISSN号	0264-8172
DOI	10.1016/j.marpetgeo.2011.05.009
英文摘要	The Labrador continental margin provides a rich source of data with which to study the relationships between stratigraphy, tectonics and paleoenvironment We have completed a regional seismic interpretation and integrated this with new biostratigraphic data, based on analyses of palynomorphs from wells in the Hopedale and Saglek Basins which occur on this margin. Our results are summarized in a tectonostratigraphic chart, which displays new and consistent age control for the major lithostratigraphic units and provides more precise evaluation of their depositional and paleoenvironmental history. We have identified and dated six regional unconformities in the wells and we can recognize several others on the seismic data. The older unconformities (Cretaceous) are related to the tectonics of rifting and seafloor spreading, and may delineate the onset of different stages of the rift process. In the Paleocene-Early Eocene, unconformity development was influenced by episodic volcanism due to the passage of the proto-Iceland hotspot to the north and to a major change in spreading direction in the Labrador Sea. Many of these unconformities are also identified in offshore southwest Greenland and the Grand Banks, suggesting widespread controlling mechanisms. During the post-seafloor spreading stage the effects of mass wasting and slumping, and of paleoenvironmental controls on the stratigraphy, were more pronounced. We discuss the petroleum potential of the Hopedale Basin in terms of the structures we see on the seismic data, and highlight the Bjarni Formation, which likely contains the most prospective source and reservoir rocks in this Basin. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.
WOS关键词	JEANNE-DARC-BASIN ; WEST GREENLAND ; CONTINENTAL-MARGIN ; NEOGENE UPLIFT ; NORTH-ATLANTIC ; RIFTED MARGINS ; SEISMIC-REFLECTION ; CONJUGATE MARGINS ; OCEANIC-CRUST ; ARCTIC-OCEAN
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000295345900006
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26414]
专题	自然资源部第一海洋研究所
通讯作者	Dickie, Kate
作者单位	Geol Survey Canada Atlantic, Bedford Inst Oceanog, Dartmouth, NS B2Y 4A2, Canada
推荐引用方式 GB/T 7714	Dickie, Kate,Keen, Charlotte E.,Williams, Graham L.,et al. Tectonostratigraphic evolution of the Labrador margin, Atlantic Canada[J]. MARINE AND PETROLEUM GEOLOGY,2011,28(9):1663-1675.
APA	Dickie, Kate,Keen, Charlotte E.,Williams, Graham L.,&Dehler, Sonya A..(2011).Tectonostratigraphic evolution of the Labrador margin, Atlantic Canada.MARINE AND PETROLEUM GEOLOGY,28(9),1663-1675.
MLA	Dickie, Kate,et al."Tectonostratigraphic evolution of the Labrador margin, Atlantic Canada".MARINE AND PETROLEUM GEOLOGY 28.9(2011):1663-1675.