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Disasters

Aftermath of the 2011 Tohoku earthquake, the largest ever recorded in Japan. Find information about catastrophic natural and human-caused disasters. The following lists are not all-inclusive. Only…

lava

(Encyclopedia) lavalavaläˈvə [key], molten rock that erupts on the earth's surface, either on land or under the ocean, by a volcano or through a fissure. It solidifies into igneous rock that is also…

island

(Encyclopedia) island, relatively small body of land surrounded entirely by water. (As the oceans form a continuous mass of water on the earth's surface, all continents are islands in the strict…

Oligocene epoch

(Encyclopedia) Oligocene epochOligocene epochŏlˈəgōsēnˌ [key], third epoch of the Tertiary period in the Cenozoic era of geologic time, lasting from 38 to 24 million years ago. More of North America…

Deep Sea Drilling Project

(Encyclopedia) Deep Sea Drilling Project, U.S. program designed to investigate the evolution of ocean basins by core drilling of ocean sediments and underlying oceanic crust. Funded by the National…

Galápagos Islands

(Encyclopedia) Galápagos Islands Galápagos Islands gəlăpˈəgōs [key] [Span.,=tortoises], archipelago and province, 3,…

fault

(Encyclopedia) CE5 Types of faults fault, in geology, fracture in the earth's crust in which the rock on one side of the fracture has measurable movement in relation to the rock on the other side…

sea level

(Encyclopedia) sea level, the level of the sea, which serves as the datum used for measurement of land elevations and ocean depths. Theoretically, one would expect sea level to be a fixed and…

fold

(Encyclopedia) fold, in geology, bent or deformed arrangement of stratified rocks. These rocks may be of sedimentary or volcanic origin. Although stratified rocks are normally deposited on the earth'…

Earthquakes

Earthquakes can wreak havoc on infrastructure. Earthquakes are some of the most devastating natural disasters in the world, causing millions in damages and claiming thousands of lives. Seismic…