DOI: 10.1007/s00531-012-0860-6
Scopus记录号: 2-s2.0-84878896982
论文题名: The rotations opening the Central and Northern Atlantic Ocean: Compilation, drift lines, and flow lines
作者: Greiner B. ; Neugebauer J.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2013
卷: 102, 期: 5 起始页码: 1357
结束页码: 1376
语种: 英语
英文关键词: Atlantic
; Finite rotations
; Paleogeographic reconstruction
; Pangea
Scopus关键词: African plate
; continental drift
; displacement
; magnetic anomaly
; paleogeography
; Pangaea
; rifting
; seafloor spreading
; tectonic evolution
; tectonic reconstruction
; Arctic
; Atlantic Ocean
; Atlantic Ocean (Central)
; Atlantic Ocean (North)
; Bay of Biscay
; Canada
; Ellesmere Island
; Greenland
; Nunavut
; Queen Elizabeth Islands
; Svalbard
; Svalbard and Jan Mayen
英文摘要: We provide an up-to-date compilation of Euler rotations that model the evolution of the Central and Northern Atlantic Ocean (Table 1). The data basis forms seafloor spreading magnetic anomalies of the Atlantic. We checked the published rotations and selected those that form a consistent model. The increments of the Euler rotations going back in time from magnetic anomaly to magnetic anomaly can be illustrated by chains of points on "drift lines" that are paths of motions from continent to continent. Along these paths, the continents bordering the Atlantic Ocean can be moved back to their Mesozoic position within Pangea. Other figures exhibit the early rifting of the North Atlantic, the drift of Iberia, and the evolution of the Greenland-Ellesmere region. The points on the drift lines do not correspond directly to the lines of magnetic anomalies or their "picks" displayed today symmetrically in the Atlantic Ocean. To acquire correspondence, symmetric "flow lines" are constructed analogous to the spreading procedure. But points on the flow lines constructed by half of the increments partially also deviate from the expected symmetric position and in this way quantify displacements or jumps of the axis of rifting or spreading. Most of the selected rotations are from the excellent analyses of previous work. Essential deviations from published rotations are the M 0 rotations of Eurasia and of the Porcupine unit with respect to North America (EUR-NAM and POR-NAM). They lead to a better coincidence between the back-rotated M 0 magnetic anomalies in the Bay of Biscay on the one side and a change of the first transform motions between Greenland and Svalbard on the other side. Through this explanation, an overlap in Pangea SW of Svalbard is avoided and transform motions instead of strong extension are predicted. Some additional data are needed to complete the model: the earliest part of the path of Iberia to North America (IBA-NAM) up to M 4 is calculated assuming that Iberia moved parallel to the African plate, though with slower spreading rates. The evolution of the Central and North Atlantic Ocean system is described in short. This model of the Central and North Atlantic was produced with the primary intention of clearing and fixing the positions of Africa, Iberia, and Eurasia as a framework for an improved reconstruction of the Western Tethys evolution. © 2013 Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878896982&doi=10.1007%2fs00531-012-0860-6&partnerID=40&md5=63db8df1a7550c003625d3edc740eddf
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70530
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Institut für Geowissenschaften, Sigwartstraße 10, 72076 Tübingen, Germany
Recommended Citation:
Greiner B.,Neugebauer J.. The rotations opening the Central and Northern Atlantic Ocean: Compilation, drift lines, and flow lines[J]. International Journal of Earth Sciences,2013-01-01,102(5)