Structure of the Earth obducted onto the continental crust and preserved as ophiolite sequences. Many rocks now making up Earth's crust formed less than 100 million (1) years ago; however, the oldest known mineral grains are about 4.4 billion (4.4) years old, indicating that Earth has had a solid crust for at least 4.4 billion years. Earth's mantle extends to a depth of 2,890 km, making it the thickest layer of Earth. The mantle is divided into upper and lower mantle. The upper and lower mantle are separated by the transition zone. The lowest part of the mantle next to the core-mantle boundary is
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.