Lithosphere for silicate rocks, and formula_4 is the age of the given part of the lithosphere. The age is often equal to L/V, where L is the distance from the spreading centre of mid-oceanic ridge, and V is velocity of the lithospheric plate. Oceanic lithosphere is less dense than asthenosphere for a few tens of millions of years but after this becomes increasingly denser than asthenosphere. This is because the chemically differentiated oceanic crust is lighter than asthenosphere, but thermal contraction of the mantle lithosphere makes it more dense than the asthenosphere. The gravitational instability of mature oceanic lithosphere has the
This Is What the Truth Feels Like few weeks before its release. The seventh track, "Send Me a Picture", has dancehall elements, and was described as a sexting ode by several publications; furthermore, Mapes stated the song has a "Bieber-hits-the-islands vibe", while Annie Zaleski of "The A.V. Club" summarized its meaning as "captur[ing] the delicious anticipation of a crush potentially texting a snap". "Red Flag" begins with "an intro that sounds like a melting violin", followed by Stefani scorning her ex: "This is what happens when you don't listen to what your mother say." Amanda Dykan of AltWire found it reminiscent of 2000's "Ex-Girlfriend" and compared Stefani's