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  1. www.researchgate.net › publication › 313795379_Earth's_Oceanic_Crust(PDF) Earth’s Oceanic Crust - ResearchGate

    Oceanic crust is created as magma rises to fill the gap between diverging tectonic plates and is consumed in subduction zones. It is geologically young, with a mean age of 60. Ma, and is thin...

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  2. link.springer.com › referenceworkentry › 10Earth’s Oceanic Crust - SpringerLink

    1 Ιαν 2018 · Download reference work entry PDF. Definition. Oceanic crust is the outermost solid layer of the lithospheric tectonic plates under the oceans that covers much of the Earth’s surface.

  3. opentextbc.ca › geology › chapter18.2 The Geology of the Oceanic Crust – Physical Geology

    As we discussed in Chapter 10, oceanic crust is formed at sea-floor spreading ridges from magma generated by decompression melting of hot upward-moving mantle rock (Figure 10.18). About 10% of the mantle rock melts under these conditions, producing mafic magma.

  4. www.britannica.com › science › oceanic-crustOceanic crust | Geology, Formation & Structure | Britannica

    Oceanic crust, the outermost layer of Earth’s lithosphere that is found under the oceans and formed at spreading centres on oceanic ridges, which occur at divergent plate boundaries. Oceanic crust is about 6 km (4 miles) thick. It is composed of several layers, not including the overlying sediment.

  5. opentextbc.ca › physicalgeology2ed › wp-contentChapter 18 Geology of the Oceans - BCcampus Open Publishing

    • Describe the various components of oceanic crust: pillow basalts, sheeted dykes, gabbro bodies, layered gabbro, and layered ultramafic rock. • Describe the age distribution of oceanic crust, and explain why all of it is relatively young. • Summarize the types of sediments and sedimentary rocks that accumulate on the sea floor, and

  6. opentextbc.ca › physicalgeology2ed › chapter18.2 The Geology of the Oceanic Crust – Physical Geology – 2nd...

    As we discussed in Chapter 10, oceanic crust is formed at sea-floor spreading ridges from magma generated by decompression melting of hot upward-moving mantle rock (Figure 10.4.3). About 10% of the mantle rock melts under these conditions, producing mafic magma.

  7. link.springer.com › referenceworkentry › 10Oceanic Crust - SpringerLink

    13 Δεκ 2020 · Download reference work entry PDF. Definition. Oceanic crust is the outer layer of the solid Earth beneath the oceans.