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DOI	10.1016/j.earscirev.2019.102956
	Reykjanes Ridge evolution: Effects of plate kinematics, small-scale upper mantle convection and a regional mantle gradient
	Martinez F.; Hey R.; Höskuldsson Á.
发表日期	2020
ISSN	00128252
卷号	206
英文摘要	The Reykjanes Ridge is a key setting to study plate boundary processes overlaid on a regional mantle melting anomaly. The ridge originated as one arm of a ridge-ridge-ridge triple junction that separated Greenland, Eurasia, and North America. It initially formed a linear axis, spreading orthogonally at slow rates without transform faults or orthogonal crustal segmentation. Stable spreading continued in this configuration for ∼18 Myr until Labrador Sea spreading ceased, terminating the triple junction by joining Greenland to North America and causing a rapid ∼30° change in opening direction across the ridge. The ridge abruptly became segmented and offset by a series of transform faults that appear to decrease in length and spacing toward Iceland. Without further changes in opening direction, the ridge promptly began to reassemble its original linear configuration systematically and diachronously from north to south, even though this required the ridge to spread obliquely as it became linear again. Prominent V-shaped crustal ridges spread outward from the axis as the ridge became linear. This reconfiguration is presently nearly complete from Iceland to the Bight transform fault, a distance of nearly 1000 km. Both mantle plume and plate boundary processes have been proposed to control the tectonic reconfigurations and crustal accretion characteristics of the Reykjanes Ridge. Here we review the ridge characteristics and tectonic evolution and various models proposed to influence them. © 2019 Elsevier B.V.
关键词	Mantle gradient Mantle melting anomaly Ridge segmentation Ridge-hot spot interaction Slow-spreading ridges Small-scale mantle convection Transform faults
英文关键词	mantle convection; mantle process; melting; plate boundary; plate motion; plate tectonics; spreading center; tectonic evolution; tectonic setting; triple junction; upper mantle; Atlantic Ocean; Reykjanes Ridge
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/203808
作者单位	Hawaii Institute of Geophysics and Planetology, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI 96822, United States; Nordic Volcanological Center, Institute of Earth Sciences, University of Iceland, Sturlugata 7, Reykjavik, 101, Iceland
推荐引用方式 GB/T 7714	Martinez F.,Hey R.,Höskuldsson Á.. Reykjanes Ridge evolution: Effects of plate kinematics, small-scale upper mantle convection and a regional mantle gradient[J],2020,206.
APA	Martinez F.,Hey R.,&Höskuldsson Á..(2020).Reykjanes Ridge evolution: Effects of plate kinematics, small-scale upper mantle convection and a regional mantle gradient.Earth Science Reviews,206.
MLA	Martinez F.,et al."Reykjanes Ridge evolution: Effects of plate kinematics, small-scale upper mantle convection and a regional mantle gradient".Earth Science Reviews 206(2020).