Crust (geology) enriched compared to the underlying mantle. Although the continental crust comprises only about 0.6 weight percent of the silicate on Earth, it contains 20% to 70% of the incompatible elements. All the other constituents except water occur only in very small quantities and total less than 1%. Estimates of average density for the upper crust range between 2.69 and 2.74 g/cm and for lower crust between 3.0 and 3.25 g/cm. Earth formed approximately 4.6 billion years ago from a disk of dust and gas orbiting the newly formed Sun. It formed via accretion, where planetesimals and other smaller rocky bodies
The Tide and Its Takers The Tide and Its Takers The Tide and Its Takers is the fourth studio album by Alaskan metalcore band 36 Crazyfists. It was released on . The band filmed a music video for the album's first single, "We Gave It Hell", with director Soren, who has previously worked with the likes of Behemoth and Unearth. The video was released on YouTube on . The album reached number 155 on the "Billboard" 200 in its first week as well as number four on the Top Heatseekers, number 23 on the Hard Rock Albums, and number 11 on the Independent Albums chart.