Now showing items 1-2 of 2

    • Deep in the Heart of Texas...Volcanoes. 

      Contreras, Edgar (2017)
      The Gulf of Mexico formed during a period of seafloor spreading and continental rifting during which there was a period of magmatism in central Texas, now known as the Balcones igneous province. Knippa basalt is a volcanic ...
    • Lower Crust from Beneath the Arctic Ice 

      Aqil, Diana (2017)
      Three major layers compose the oceanic crust: sediment, basalt, and gabbro, a total thickness normally between 5-10 km. The deepest, least accessible, and least understood of these is gabbro, an crystalline magmatic rock ...