气候变化领域集成服务门户(CCPortal): Review of the late Quaternary stratigraphy of the northern Gulf of Cadiz continental margin: New insights into controlling factors and global implications

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DOI	10.1016/j.earscirev.2019.102944
	Review of the late Quaternary stratigraphy of the northern Gulf of Cadiz continental margin: New insights into controlling factors and global implications
	Mestdagh T.; Lobo F.J.; Llave E.; Hernández-Molina F.J.; Van Rooij D.
发表日期	2019
ISSN	00128252
卷号	198
英文摘要	Over the past decades, the northern Gulf of Cadiz has been the focus of a wide range of late Quaternary seismic and sequence stratigraphic studies, either addressing the slope contourite depositional system (CDS), or the development of the continental shelf. Yet, high-resolution seismic data bridging between these domains and age information have remained sparse. This study, based on new high-resolution reflection seismic profiles calibrated to IODP Expedition 339 sites U1386/U1387, now presents an updated stratigraphic framework, that integrates (for the first time) the late Quaternary records of the northern Gulf of Cadiz middle slope to shelf off the Guadiana River. Seismic stratigraphic analysis of the stacking, depocenter distribution, stratal architecture and facies of the seismic (sub-)units reveals the influence of ~100 kyr sea-level variations paced by Milankovitch (eccentricity) cycles, tectonics (manifesting as two pulses of uplift and margin progradation), sediment supply and bottom current activity. This work furthermore contributes to the application and understanding of high-resolution, late Quaternary sequence stratigraphy. Firstly, the proposed sequence stratigraphic interpretation shows that adaptations to the basic models are required to integrate the shelf and slope record, and to account for the presence of a significant alongslope (bottom current-controlled) component. Secondly, the results confirm that the sequences are dominantly composed of regressive deposits, whereas the preservation of transgressive to highstand deposits is more irregular. Significantly, the common assumption that successive major glacial lowstands are consistently recorded as well-marked, shelf-wide erosional unconformities, is demonstrated to be occasionally invalid, as tectonics can obliterate this one-to-one relationship. © 2019 Elsevier B.V.
关键词	Gulf of Cadiz Late Quaternary Oceanography Sea level Stratigraphy Tectonics
英文关键词	continental margin; depositional environment; literature review; oceanography; Quaternary; sea level change; sequence stratigraphy; tectonic evolution; Atlantic Ocean; Gulf of Cadiz
语种	英语
来源期刊	Earth Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203507
作者单位	Renard Centre of Marine Geology, Department of Geology, Ghent University, Krijgslaan 281 (S8), Gent, 9000, Belgium; Instituto Andaluz de Ciencias de la Tierra, CSIC-Universidad de Granada, Av. de las Palmeras 4, Armilla, 18100, Spain; Instituto Geológico y Minero de España (IGME), Ríos Rosas 23, Madrid, 28003, Spain; Department of Earth Sciences, Royal Holloway University of London, Egham, Surrey, TW20 0EX, United Kingdom
推荐引用方式 GB/T 7714	Mestdagh T.,Lobo F.J.,Llave E.,et al. Review of the late Quaternary stratigraphy of the northern Gulf of Cadiz continental margin: New insights into controlling factors and global implications[J],2019,198.
APA	Mestdagh T.,Lobo F.J.,Llave E.,Hernández-Molina F.J.,&Van Rooij D..(2019).Review of the late Quaternary stratigraphy of the northern Gulf of Cadiz continental margin: New insights into controlling factors and global implications.Earth Science Reviews,198.
MLA	Mestdagh T.,et al."Review of the late Quaternary stratigraphy of the northern Gulf of Cadiz continental margin: New insights into controlling factors and global implications".Earth Science Reviews 198(2019).