• Thumbnail for Oceanic crust
    Oceanic crust is the uppermost layer of the oceanic portion of the tectonic plates. It is composed of the upper oceanic crust, with pillow lavas and a...
    15 KB (1,854 words) - 00:11, 16 March 2024
  • Thumbnail for Earth's crust
    secondary and tertiary crust, which correspond to oceanic and continental crust, respectively. Secondary crust forms at mid-ocean spreading centers, where...
    13 KB (1,615 words) - 08:36, 12 March 2024
  • Thumbnail for Mid-ocean ridge
    low-density mantle supporting the oceanic crust. As the oceanic plate cools, away from the ridge axis, the oceanic mantle lithosphere (the colder, denser...
    36 KB (4,663 words) - 06:09, 17 February 2024
  • Thumbnail for Continental crust
    oceanic crust. Because continental crust is less dense than oceanic crust, when active margins of the two meet in subduction zones, the oceanic crust...
    17 KB (2,006 words) - 01:17, 14 March 2024
  • between an oceanic and an oceanic crust, creating a so-called oceanic trench. It can also take place between an oceanic and a continental crust, forming...
    17 KB (2,194 words) - 00:30, 29 February 2024
  • Thumbnail for Plate tectonics
    oceanic crust and continental crust is based on their modes of formation. Oceanic crust is formed at sea-floor spreading centers. Continental crust is...
    112 KB (13,615 words) - 00:01, 6 February 2024
  • Thumbnail for Convergent boundary
    lithosphere, and deformation. Convergent boundaries occur between oceanic-oceanic lithosphere, oceanic-continental lithosphere, and continental-continental lithosphere...
    20 KB (2,381 words) - 04:32, 18 March 2024
  • Thumbnail for Crust (geology)
    terrestrial planets have fairly uniform crusts. Earth, however, has two distinct types: continental crust and oceanic crust. These two types have different chemical...
    11 KB (1,376 words) - 17:11, 8 December 2023
  • Thumbnail for Seafloor spreading
    spreading, or seafloor spread, is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves...
    28 KB (4,108 words) - 13:08, 15 December 2023
  • Thumbnail for Oceanic plateau
    under a plate carrying an igneous oceanic plateau, the volcanism which erupts on the plateau as the oceanic crust heats up on its descent into the mantle...
    11 KB (1,064 words) - 21:34, 24 March 2024
  • Thumbnail for Dharwar Craton
    melting of subducted oceanic crust and the melting of thickened oceanic arc crust. The continuous melting of oceanic arc crust and mantle upwelling generated...
    39 KB (3,536 words) - 19:29, 21 March 2023
  • Thumbnail for List of tectonic plates
    two principal types of material: oceanic crust (also called sima from silicon and magnesium) and continental crust (sial from silicon and aluminium)...
    19 KB (3,047 words) - 01:44, 11 March 2024
  • Thumbnail for Volcanic arc
    Volcanic arc (redirect from Oceanic arc)
    subducting oceanic tectonic plate, with the belt arranged in an arc shape as seen from above. Volcanic arcs typically parallel an oceanic trench, with...
    19 KB (2,425 words) - 03:58, 8 March 2024
  • Thumbnail for Ophiolite
    of Earth's oceanic crust and the underlying upper mantle that has been uplifted and exposed, and often emplaced onto continental crustal rocks. The Greek...
    32 KB (3,876 words) - 01:55, 27 March 2024
  • Thumbnail for Lithosphere
    lithosphere can be divided into oceanic and continental lithosphere. Oceanic lithosphere is associated with oceanic crust (having a mean density of about...
    16 KB (1,879 words) - 00:04, 31 January 2024
  • The lower oceanic crust is the lower part of the oceanic crust and represents the major part of it (volumetrically biggest part). It is generally located...
    12 KB (1,782 words) - 14:24, 4 November 2023
  • Thumbnail for Continent
    Crustal structure – The landmass should consist of the continental crust, which is thicker and has a lower seismic velocity than the oceanic crust. Limits...
    90 KB (8,792 words) - 21:35, 27 March 2024
  • Thumbnail for Subduction
    which the oceanic lithosphere and some continental lithosphere is recycled into the Earth's mantle at convergent boundaries. Where the oceanic lithosphere...
    67 KB (8,274 words) - 03:13, 28 February 2024
  • Thumbnail for Earth's mantle
    the mantle at mid-ocean ridges produces oceanic crust, and partial melting of the mantle at subduction zones produces continental crust. Earth's mantle...
    27 KB (3,119 words) - 21:43, 19 March 2024
  • Thumbnail for Borders of the oceans
    Geologically, an ocean is an area of oceanic crust covered by water. See also the list of seas article for the seas included in each ocean area. Though generally...
    48 KB (6,523 words) - 03:01, 25 February 2024
  • Thumbnail for Continental margin
    continental crust abutting oceanic crust under coastal waters. It is one of the three major zones of the ocean floor, the other two being deep-ocean basins...
    8 KB (949 words) - 07:59, 15 February 2024
  • Thumbnail for Chemosynthesis
    researchers reported their discovery of bacteria living in the rock of the oceanic crust below the thick layers of sediment, and apart from the hydrothermal...
    12 KB (1,213 words) - 19:41, 5 December 2023
  • Thumbnail for Abyssal plain
    Abyssal plain (category Coastal and oceanic landforms)
    oceanic crust. Magma rises from above the asthenosphere (a layer of the upper mantle), and as this basaltic material reaches the surface at mid-ocean...
    80 KB (9,035 words) - 03:38, 9 March 2024
  • Thumbnail for Basement (geology)
    originally been oceanic crust, but it was highly metamorphosed and converted into continental crust. It is possible for oceanic crust to be subducted...
    12 KB (1,493 words) - 18:13, 25 January 2024
  • Thumbnail for Passive margin
    distinction between active and passive margins refers to whether a crustal boundary between oceanic lithosphere and continental lithosphere is a plate boundary...
    24 KB (2,909 words) - 18:57, 2 September 2023
  • Thumbnail for Earth
    into oceanic and continental crust. Beneath the ocean-floor sediments, the oceanic crust is predominantly basaltic, while the continental crust may include...
    194 KB (17,986 words) - 03:30, 28 March 2024
  • Thumbnail for Continental collision
    bits of continental crust), separated across a tract of ocean (and oceanic crust), approach each other, while the oceanic crust is slowly consumed at...
    11 KB (1,384 words) - 16:46, 24 June 2023
  • denser oceanic crust will be subducted under relatively lighter continental crust. Because of the subduction process, the relatively cooler oceanic crust, along...
    14 KB (1,517 words) - 09:41, 22 December 2023
  • Thumbnail for Igneous rock
    provinces, extended crust and oceanic crust. Igneous and metamorphic rocks make up 90–95% of the top 16 kilometres (9.9 mi) of the Earth's crust by volume. Igneous...
    48 KB (5,606 words) - 04:49, 24 March 2024
  • Thumbnail for Sedimentary basin
    sedimentary basins formed on oceanic crust are likely to be destroyed by subduction. Continental margins formed when new ocean basins like the Atlantic are...
    47 KB (4,615 words) - 16:12, 8 January 2024