Oceanic crust Oceanic crust Oceanic crust is the uppermost layer of the oceanic portion of a tectonic plate. It is composed of the upper oceanic crust, with pillow lavas and a dike complex, and the lower oceanic crust, composed of troctolite, gabbro and ultramafic cumulates. The crust overlies the solidified and uppermost layer of the mantle. The crust and the solid mantle layer together constitute oceanic lithosphere. Oceanic crust is primarily composed of mafic rocks, or sima, which is rich in iron and magnesium. It is thinner than continental crust, or sial, generally less than 10 kilometers thick; however it is denser,
And What Will We Do Tomorrow? sometime after the events in the story "Burning". In this story it is learned that Mother's real name is Rachel Crove and that she is the granddaughter of Jerry Crove the main character in the story "A Thousand Deaths". And What Will We Do Tomorrow? "And What Will We Do Tomorrow" is a short story by Orson Scott Card. It first appeared in his short story collection "Capitol" and then later in "The Worthing Saga". This story is about Mother the empress of Capitol. In it she wakes up from suspended animation for her one waking day every five years