region of partial melting
31Snow — Snowfall redirects here. For other uses, see Snow (disambiguation) or Snowfall (disambiguation). Snow is a type of precipitation in the form of crystalline water ice, consisting of a multitude of snowflakes that fall from clouds. The process of… …
32Volcanic arc — Mariana Islands, an oceanic island arc A volcanic arc is a chain of volcanoes positioned in an arc shape as seen from above. Offshore volcanoes form islands, resulting in a volcanic island arc. Generally they result from the subduction of an… …
33Baltic Shield — The Baltic Shield (sometimes referred to as the Fennoscandian Shield) is located in Fennoscandia (Norway, Sweden and Finland), northwest Russia and under the Baltic Sea. The Baltic Shield is defined as the exposed Precambrian northwest segment of …
34Convergent boundary — In plate tectonics, a convergent boundary, also known as a destructive plate boundary (because of subduction), is an actively deforming region where two (or more) tectonic plates or fragments of lithosphere move toward one another and collide. As …
35Arabian-Nubian Shield — The Arabian Nubian Shield (ANS) is an exposure of Precambrian crystalline rocks on the flanks of the Red Sea. The crystalline rocks are mostly Neoproterozoic in age. Geographically and from north to south the ANS includes the nations of Israel,… …
36Cadomian Orogeny — The Cadomian Orogeny was a tectonic event or series of events in the late Neoproterozoic, about 650 550 Ma, which probably included the formation of mountains. This occurred on the margin of the Gondwana continent, involving one or more… …
37Moon — This article is about Earth s Moon. For moons in general, see Natural satellite. For other uses, see Moon (disambiguation) …
382004 Indian Ocean earthquake and tsunami — 2004 Indian Ocean earthquake Tsunami strikes Ao Nang, Thailand. Date 00:58:53, December 26 …
39Taconic orogeny — The Taconic orogeny was a great mountain building period that perhaps had the greatest overall effect on the geologic structure of basement rocks within the New York Bight region. The effects of this orogeny are most apparent throughout New… …
40Iapetus Ocean — The Iapetus Ocean was an ocean that existed in the Southern Hemisphere between Laurentia (Scotland and North America) and Baltica (Scandinavia) between 400 and 600 million years ago. As a sort of precursor of the Atlantic Ocean, it was named for… …
