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
What We Do in the Shadows What We Do in the Shadows A documentary crew (who are wearing crucifixes) follows four vampire roommates—Viago, Vladislav, Deacon, and Petyr—who share a flat in the Wellington suburb of Te Aro. Although Viago, Vladislav and Deacon are all several centuries old, they have retained normal human appearances, but the 8,000-year-old Petyr resembles Count Orlok and acts more savagely than the younger vampires. Each night, Viago, Vladislav, and Deacon prowl the streets of Wellington searching for people to kill, but they must stay in the flat during the day to avoid sunlight—which is lethal to vampires—and thus have not adapted to