Gzhelian Stage — ▪ geology Gzhelian also spelled Gzelian last of four internationally defined stages of the Pennsylvanian Subsystem (Pennsylvanian Subperiod), Carboniferous System (Carboniferous Period), encompassing all rocks deposited during the… … Universalium
Pennsylvanian — This article is about the geologic subperiod. For passenger train, see Pennsylvanian (Amtrak). System Subsystem/ Series Stage Age (Ma) Permian Cisuralian Asselian younger … Wikipedia
Carboniferous — For the album by Zu see Carboniferous (album). Carboniferous Period 359.2–299 million years ago … Wikipedia
Geologic time scale — This clock representation shows some of the major units of geological time and definitive events of Earth history. The Hadean eon represents the time before fossil record of life on Earth; its upper boundary is now regarded as 4.0 Ga.[1] Other… … Wikipedia
Mississippian — For other uses, see Mississippian (disambiguation). Not to be confused with the Mississippian period describing the dominance of the Mississippian culture. System Subsystem/ Series Stage Age (Ma) Permian Cisuralian Asselian … Wikipedia
Carboniferous Period — Interval of geologic time 354–290 million years ago, marked by great changes in world geography. All the landmasses drew closer together as a result of tectonic plate movements. The supercontinent Gondwana occupied much of the Southern Hemisphere … Universalium
Changhsingian — System Series Stage Age (Ma) Triassic Lower Induan younger Permian Lopingian … Wikipedia
Moscovian (Carboniferous) — System Subsystem/ Series Stage Age (Ma) Permian Cisuralian Asselian younger Carboniferous Pennsylvanian … Wikipedia
Geology of the North Sea — Contents 1 Tectonic structure 2 Precambrian 3 Finnmarkian, Athollian, Caledonian Orogenies … Wikipedia
Cambrian — For other uses, see Cambrian (disambiguation). Cambrian Period 542–488.3 million years ago … Wikipedia
