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Morphological characteristics and relationship with spreading rates in Mid-Ocean ridges
- 1 China University of Mining & Technology
* Author to whom correspondence should be addressed.
Abstract
Mid-ocean Ridges is where plate spreads, serving as a window to explore the interior earth and its dynamics. This research investigates the morphological characteristics of mid-ocean ridges and their relationship with spreading rates, magma activity, and magma supply. The study reveals that the morphology of mid-ocean ridges is closely related to the stability and adequacy of magma supply. Mid-ocean ridges with rapid spreading exhibit relatively stable and uniform crustal thickness, thus developing axial high and smoother morphology. While those with slow and ultra-slow spreading have a cold thermal structure and thick brittle/plastic layers where fluctuations between segments are obvious and deeper axial valley shapes within segment. Additionally, the slope variation of mid-ocean ridges is associated with fluctuations in magma activity, with regions of higher magma activity often having steeper slopes. The study also finds a positive correlation between slope and axial depth, with faster spreading rates corresponding to greater axial depth.
Keywords
Mid-ocean Ridge, segment, morphology, axial depth
[1]. Buck, W.R., Lavier, L.L., Poliakov, A.N., 2005. Modes of faulting at mid-ocean ridges. Nature 434, 719–723.
[2]. Maya Tolstoy, Alistair J. Harding, and John A. Orcutt, 1993. Crustal Thickness on the Mid-Atlantic Ridge: Bull’s Eye Gravity Anomalies and Focused Accretion. 29 October 1993, Volume 262, pp. 726-729.
[3]. Carbotte S M, Smith D K, Cannat M, et al. Tectonic and magmatic segmentation of the Global Ocean Ridge System: A synthesis of observations. February 2015 Geological Society London Special Publications 420(1)
[4]. Carbotte S M, Rift topography linked to magmatism at the intermediate spreading Juan de Fuca Ridge. Geology (2006) 34 (3): 209–212.
[5]. Macdonald K C, Fox P J. 1988. A new view of the mid-ocean ridge from the behavior of ridge axis discontinuities. Nature, 335: 217–225.
[6]. Macdonald, K.C. , Mid-oceanic ridge, in Parker, S.P., ed., McGraw-Hill Yearbook of Science & Technology, McGraw-Hill, Inc., New York, 259-262, 1992.
[7]. John Lin, G. M. Purdy, H. Schouten, J.-C. Sempere and C. Zervas. Evidence from gravity data for focusedmagmatic accretionalong the Mid-Atlantic Ridge. Nature volume 344, pages 627–632 (1990)
[8]. Henry J. B. Dick, Jian Lin & Hans Schouten. An ultraslow-spreading class of ocean ridge. December 2003Nature 426(6965):405-12
[9]. Taras Gerya, Origin and models of oceanic transform faults. February 2012Tectonophysics 522
[10]. Douglas W. Oldenburg, James N. Brune. An explanation for the orthogonality of ocean ridges and transform faults. Volume80, Issue17 Solid Earth and Planets 10 June 1975 Pages 2575-2585
[11]. Olivier Dauteuil. Lithosphere strength controls oceanic transform zone structure: Insights from analogue models. September 2002Geophysical Journal International 150(3):706-714
[12]. Brian E. Tucholke, Ross Parnell-Turner, Deborah K. Smith. The Global Spectrum of Seafloor Morphology on Mid-Ocean Ridge Flanks Related to Magma Supply. Volume128, Issue12 December 2023 e2023JB027367
[13]. Jean-Arthur Olive. Controls on the magmatic fraction of extension at mid-ocean ridges. Earth and Planetary Science Letters Volume 549, 1 November 2020, 116541
[14]. J. R. Cann, D. K. Blackman, D. K. Smith, E. McAllister, B. Janssen, S. Mello, E. Avgerinos, A. R. Pascoe and J. Escartin. Corrugated slip surfaces formed at ridge–transform intersections on the Mid-Atlantic Ridge. Nature volume 385, pages 329–332 (1997)
[15]. Garrett Ito, Mark D. Behn. Magmatic and tectonic extension at mid-ocean ridges: 2. Origin of axial morphology. Geochemistry, Geophysics,Geosystems Volume9, Issue9 September 2008
[16]. Perfit, Michael R. ; Chadwick, William W., Jr. Magmatism at mid-ocean ridges: Constraints from volcanological and geochemical investigations. Faulting and Magmatism at Mid-Ocean Ridges. (1998), Geophys. Monogr. Ser., vol. 106, edited by W. Roger Buck et al., pp. 59-115, AGU, Washington, D. C.
[17]. R. S. Detrick, A. J. Harding, G. M. Kent, J. A. Orcutt, J. C. Mutter, AND P. Buhl. Seismic Structure of the Southern East Pacific Rise. SCIENCE 22 Jan 1993 Vol 259, Issue 5094 pp. 499-503
[18]. D. A. Navin, C. Peirce, M.C. Sinha. The RAMESSES experiment—II. Evidence for accumulated melt beneath a slow spreading ridge from wide-angle refraction and multichannel reflection seismic profiles. Geophysical Journal International, Volume 135, Issue 3, December 1998, Pages 746–772
[19]. John R. Smallwood, Robert S. White. Crustal accretion at the Reykjanes Ridge, 61°–62°N. Volume103, IssueB3 10 March 1998 Pages 5185-5201
[20]. Zhonglan Liu, W. Roger Buck, 2018. Magmatic controls on axial relief and faulting at mid-ocean ridges. Earth and Planetary Science Letters 491 (2018) 226–237.
[21]. Yi Luo, W. Roger Buck, 2021. Magma source region size controls along axis variations in crustal thickness, axial depth and relief at plate spreading centers. Earth and Planetary Science Letters Volume 575, 1 December 2021, 117192.
[22]. James R. Cochran, Gregory J. Kurras, Margo H. Edwards, Bernard J. Coakley. The Gakkel Ridge: Bathymetry, gravity anomalies, and crustal accretion at extremely slow spreading rates. Volume108, IssueB2 February 2003
[23]. G. M. Purdy, L. S. L. Kong, G. L. Christeson & S. C. Solomon. Relationship between spreading rate and the seismic structure of mid-ocean ridges. Nature volume 355, pages 815–817 (1992)
[24]. Mingqi Liu, Taras Gerya. Forced Subduction Initiation Near Spreading Centers: Effects of Brittle-Ductile Damage. JGR Solid Earth Volume128, Issue2 February 2023 e2022JB024701
Cite this article
Peng,J. (2024). Morphological characteristics and relationship with spreading rates in Mid-Ocean ridges. Theoretical and Natural Science,37,248-257.
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The datasets used and/or analyzed during the current study will be available from the authors upon reasonable request.
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