globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2017.07.015
论文题名:
Relative sea-level changes and glacio-isostatic adjustment on the Magdalen Islands archipelago (Atlantic Canada) from MIS 5 to the late Holocene
作者: Rémillard A.M.; St-Onge G.; Bernatchez P.; Hétu B.; Buylaert J.-P.; Murray A.S.; Lajeunesse P.
刊名: Quaternary Science Reviews
出版年: 2017
卷: 171
起始页码: 216
结束页码: 233
语种: 英语
英文关键词: Atlantic Canada ; Glaciation ; Glacio-isostatic adjustment ; Holocene ; Last Glacial Maximum ; Luminescence dating ; MIS 3 ; MIS 5 ; Sea-level changes ; Sedimentology
Scopus关键词: Glacial geology ; Luminescence ; Sea level ; Sedimentology ; Stratigraphy ; Atlantic Canada ; Glaciation ; Glacio-isostatic adjustment ; Holocenes ; Last Glacial Maximum ; Luminescence dating ; Sealevel change ; Tectonics
英文摘要: The Magdalen Islands (Québec, Canada) in the centre of the Gulf of St. Lawrence are located in a strategic position for providing an overview of the relative sea-level (RSL) history of the Maritime Provinces of eastern Canada. Although data are available for the coastal terrestrial areas of the Maritimes, data from the Gulf are very scarce and both the RSL and glacio-isostatic adjustment (GIA) models extrapolate for this central region. This study provides new stratigraphic and chronological data from four outcrops and two coring sites on the Magdalen Islands. In addition to the five samples used mainly for age control purposes, nine new luminescence ages are presented. With these new data added to the available literature, a new RSL curve is reconstructed for the LGM to the late Holocene period and a partial curve is proposed for the interval between the late MIS 4 to the MIS 3. Data also indicate a few insights for the MIS 5 period. Results reveal that for the LGM to the late Holocene, the curve corresponds to the J-shaped curve scenario recognized in the literature. The RSL changes during this period are the result of glacio-isostatic rebound, migration and collapse of the peripheral forebulge, and eustatic sea-level changes. For the LGM to the early Holocene, glacio-isostatic depression curves displaying a few local differences are also proposed. For the late Holocene, the data constrain the curve between two types of indicators, i.e. marine and terrestrial, and indicate that the RSL has risen at least 3 m during the last two millennia. Sediments dated to the MIS 5 and the interval between the late MIS 4 and the MIS 3 illustrate that the GIA following the LGM also occurred for the MIS 5 interglacial and the MIS 3 interstadial. Finally, recent GIA models are discussed in light of the results of this paper. © 2017 Elsevier Ltd
资助项目: Rémillard, A.M. ; Institut des sciences de la mer de Rimouski (ISMER) & GEOTOP, Université du Québec à Rimouski, 310 allée des Ursulines, Canada ; 电子邮件: audrey.mercierremillard@uqar.ca
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59130
Appears in Collections:过去全球变化的重建

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作者单位: Institut des sciences de la mer de Rimouski (ISMER) & GEOTOP, Université du Québec à Rimouski, 310 allée des Ursulines, Rimouski, Québec, Canada; Département de biologie, chimie et géographie & Centre for Northern Studies (CEN), Université du Québec à Rimouski, 300 allée des Ursulines, Rimouski, Québec, Canada; Nordic Laboratory for Luminescence Dating, Department of Geoscience, Aarhus University, Technical University of Denmark, Centre for Nuclear Technologies, Risø Campus, Roskilde, Denmark; Nordic Laboratory for Luminescence Dating, Department of Geoscience, Aarhus University, Risø Campus, Roskilde, Denmark; Département de géographie & Centre for Northern Studies (CEN), Université Laval, 2405 rue de la Terrasse, Québec, Québec, Canada

Recommended Citation:
Rémillard A.M.,St-Onge G.,Bernatchez P.,et al. Relative sea-level changes and glacio-isostatic adjustment on the Magdalen Islands archipelago (Atlantic Canada) from MIS 5 to the late Holocene[J]. Quaternary Science Reviews,2017-01-01,171
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