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,
What Do You See? What Do You See? "What Do You See?" (就在这里 in Mandarin) is a song by Singaporean band Electrico. It was commissioned as the official theme song for the 2009 National Day Parade. The song is one of the few National Day Parade theme songs that does not mention the word ""Singapore"" in its lyrics. Its lyrics were cited by Prime Minister Lee Hsien Loong in his 2018 National Day Message. Directed by Bertrand Lee, the music video opens with a bokeh and later sharpens to reveal band member David Tan. The camera then traces him around the downtown core of