thickness of oceanic crust

See Fig. Mar Geophys Res 41, 14 (2020). Earth Planet Phys 2:1–15. J Geophys Res: Solid Earth 99:3081–3095. In: Eiler J (ed) Geophysical monograph series, vol 138. Estimations of composition are based on analyses of ophiolites (sections of oceanic crust that are thrust onto and preserved on the continents), comparisons of the seismic structure of the oceanic crust with laboratory determinations of seismic velocities in known rock types, and samples recovered from the ocean floor by submersibles, dredging (especially fr…, Niu Y, O’Hara MJ (2008) Global correlations of ocean ridge basalt chemistry with axial depth: a new perspective. Blue and red dotted lines with corresponding circles are simulated volumes with different Tlab. 8a) and ridge depth (from 3 to 3.7 km, Fig. The space discretization of Eq. We use cookies to help provide and enhance our service and tailor content and ads. Comput Geosci 31:513–520. Treatise on geochemistry., Dalton CA, Langmuir CH, Gale A (2014) Geophysical and geochemical evidence for deep temperature variations beneath mid-ocean ridges. 7) due to low melt production (< 100 km3/Ma/km, Fig. Science 323:1045–1048., Oldenburg DW (1974) Inversion and interpretation of the gravity anomalies. The red and green solid lines are linear regressions of mean values of H for 10 < Sr < 95 mm/year and Sr > 95 mm/year, respectively. Note that the temperature fields in Fig., Klein EM, Langmuir CH (1987) Global correlations of ocean ridge basalt chemistry with axial depth and crustal thickness. The simplest model shows an oceanic-like crust, slightly thickened to 9 km. Institute of Marine Geology and Resources, Zhejiang University, Zhoushan, China, Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China, Laboratori de Calcul Numèric, Escola Tècnica Superior d’Enginyers de Camins, Universitat Politècnica de Catalunya, Barcelona, Spain, National Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing, China, You can also search for this author in Nat Geosci 10:58–61. The initial temperatures are 0 °C at the surface and 1607 °C at the bottom (660 km depth) based on a potential temperature of 1277 ºC and an adiabatic gradient of 0.5 °C/km. 8a, b). J Petrol 51:1913–1940. Pure Appl Geophys 136:87–101, Tucholke BE, Behn MD, Buck WR, Lin J (2008) Role of melt supply in oceanic detachment faulting and formation of megamullions. © 2016 Elsevier B.V. All rights reserved. The dashed blue lines with arrows display hydrothermal circulations beneath ridges. The authors declare that they have no conflict of interest. Thus, the unit of melt volume is km3/km/Ma. J Petrol 53:1637–1671., Li C-F, Wang J (2016) Variations in Moho and Curie depths and heat flow in Eastern and Southeastern Asia. Paper presented at the General Assembly of the European Geosciences Union, Vienna, Austria, Perfit MR Jr, Chadwick WW (1998) Magmatism at mid-ocean ridges' constraints from volcanological and geochemical investigations. Earth Planet Sci Lett 311:386–395. ZDJ2019-09). Can you treat poison ivy with econazole nitrate cream? Oceanic crust is about 6 km (4 miles) thick. Temperatures are computed from Eq., Nicolas A, Mainprice D, Fo B (2003) High-temperature seawater circulation throughout crust of oceanic ridges: a model derived from the Oman ophiolites., Edmonds HN et al (2003) Discovery of abundant hydrothermal venting on the ultraslow-spreading Gakkel ridge in the Arctic Ocean.

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