Moho and uppermost mantle

Beneath the seafloor

The Mohorovičić discontinuity, or Moho, is a seismic boundary between crust and mantle. Beneath typical gabbroic ocean crust lies peridotite, rich in olivine and pyroxene. This uppermost mantle is predominantly solid rock.

html,body{position:static!important;height:auto!important;overflow:auto!important}body{color:#e8f1ff}body>:not(noscript){display:none!important}#static-seo-content img{display:block;max-width:100%;height:auto}#static-seo-content{max-width:800px;margin:40px auto;padding:24px;font:16px/1.7 Arial,sans-serif}#static-seo-content a{color:#a8d5ef}#static-seo-content nav{display:flex;flex-wrap:wrap;gap:12px} Folded sedimentary rock beneath the seafloor, with labels for natural gas, oil, formation water, seal rock and source rock.

Folded sedimentary rock beneath the seafloor, with labels for natural gas, oil, formation water, seal rock and source rock.

Moho and uppermost mantle

The Mohorovičić discontinuity, or Moho, is a seismic boundary between crust and mantle. Beneath typical gabbroic ocean crust lies peridotite, rich in olivine and pyroxene. This uppermost mantle is predominantly solid rock.

Ocean trench Earth’s interior Moho and uppermost mantle · Wikipedia