Search results
17 hours ago · The Cretaceous–Paleogene (K–Pg) extinction event, [ a ] also known as the Cretaceous–Tertiary(K–T)extinction, [ b ] was the mass extinction of three-quarters of the plant and animal species on Earth [ 2 ][ 3 ] approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs.
People also ask
Are crater-like topographic features associated with Cretaceous–Paleogene extinction?
What happened to subfossil on the North Island?
Is Mercury a proxy for volcanic activity during extreme environmental turnover?
How did marine regression affect epeiric seas?
17 hours ago · Oceania is a geographical region in the Pacific Ocean comprising Australasia, Melanesia, Micronesia, and Polynesia. [2][3] Numerous species across Oceania became extinct as humans moved across the Pacific. Australia-New Guinea, New Zealand, and Hawaii have particularly large numbers of extinct species, so they listed in separate articles.
17 hours ago · The North Island giant moa (Dinornis novaezealandiae) is among dozens of bird species that became extinct after the human settlement of New Zealand. This is a list of New Zealand species extinct in the Holocene that covers extinctions from the Holocene epoch, a geologic epoch that began about 11,650 years Before Present (about 9700 BCE) [a] and ...
17 hours ago · Obsidian is a common volcanic glass with high silica (SiO 2) content formed when felsic lava extruded from a volcano cools rapidly. [16] Impactite is a form of glass formed by the impact of a meteorite , where Moldavite (found in central and eastern Europe), and Libyan desert glass (found in areas in the eastern Sahara , the deserts of eastern Libya and western Egypt ) are notable examples. [ 17 ]
17 hours ago · The movement proceeds in jerks which cause earthquakes, heat is produced and magma is forced up creating underwater mountains, some of which may form chains of volcanic islands near to deep trenches. Near some of the boundaries between the land and sea, the slightly denser oceanic plates slide beneath the continental plates and more subduction trenches are formed.
17 hours ago · For example, the 2004 Indian Ocean earthquake and tsunami, with a death toll of around 230,000 people, cost a 'mere' $15 billion, [1] whereas in the Deepwater Horizon oil spill, in which 11 people died, the damage was six times higher. The most expensive disaster in human history is the Chernobyl disaster, costing an estimated $700 billion. [2]
17 hours ago · Russia has nine major mountain ranges, and they are found along the southernmost regions, which share a significant portion of the Caucasus Mountains (containing Mount Elbrus, which at 5,642 m (18,510 ft) is the highest peak in Russia and Europe); [9] the Altai and Sayan Mountains in Siberia; and in the East Siberian Mountains and the Kamchatka Peninsula in the Russian Far East (containing Klyuchevskaya Sopka, which at 4,750 m (15,584 ft) is the highest active volcano in Eurasia).
