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13 de jun. de 2024 · The Ordovician is divided into three epochs: Early Ordovician (485.4 million to 470 million years ago), Middle Ordovician (470 million to 458.4 million years ago), and Late Ordovician (458.4 million to 443.8 million years ago).
Hace 6 días · Large and frequent fluctuations in sea level associated with the glacial cycles may strongly affect the expansion and contraction of epicontinental seas and consequently the size of shallow-marine ...
15 de jun. de 2024 · Large Igneous Provinces (LIPs) are associated with global warming and carbon cycle perturbations during Oceanic Anoxic Event 2 (OAE2, ~94 Ma) and the Mid-Cenomanian Event (MCE, ~96.5 Ma).
Hace 4 días · Startlingly, of the four terrestrial planets, only Earth shows evidence of long-term, pervasive plate tectonics. Both Venus and Mars exhibit geology dominated by basaltic volcanism on a largely immovable crust, with only faint hints of possibly limited episodes of horizontal plate motion.
12 de jun. de 2024 · During the Campanian, a broad, shallow epicontinental sea inundated southern Tethyan platforms, creating ideal habitat conditions for oyster communities to thrive. The warm, clear waters and ...
12 de jun. de 2024 · During the Pennsylvanian period, an epicontinental sea significantly influenced the paleogeography of Western Gondwana, as evidenced by the Pennsylvanian units of the Tapajós Group (Monte Alegre, Itaituba, and Nova Olinda formations) in the Amazonas Basin, Brazil.
21 de jun. de 2024 · Extending from 201.3 million to 145 million years ago, the Jurassic was a time of global change in the continents, oceanographic patterns, and biological systems. On land, dinosaurs and flying pterosaurs dominated, and birds made their first appearance.
