what are the major geologic events that occurred during the mesozoic era?
139752
Three of the five largest mass extinctions in Earth history are associated with the Mesozoic: a mass extinction occurred at the boundary between the Mesozoic and the preceding Paleozoic; another occurred within the Mesozoic at the end of the Triassic Period; and a third occurred at the boundary between the Mesozoic and ...
1151827
During the Mesozoic, or "Middle Life" Era, life diversified rapidly and giant reptiles, dinosaurs and other monstrous beasts roamed the Earth. The period, which spans from about 252 million years ago to about 66 million years ago, was also known as the age of reptiles or the age of dinosaurs.
636834
The start of the Triassic period (and the Mesozoic era) was a desolate time in Earth's history. Something—a bout of violent volcanic eruptions, climate change, or perhaps a fatal run-in with a comet or asteroid—had triggered the extinction of more than 90 percent of Earth's species.
193822
['Pyroclastic Density Currents (pyroclastic flows and surges)', 'Lahars.', 'Structural Collapse: Debris flow-Avalanches.', 'Dome Collapse and the formation of pyroclastic flows and surges.', 'Lava flows.', 'Tephra fall and ballistic projectiles.', 'Volcanic gas.', 'Tsunamis.']
1050143
['The geologic time scale (GTS) is a system of chronological dating that relates geological strata (stratigraphy) to time. ... ', 'The primary defined divisions of time are periods called eons. ... ', 'Eons are divided into eras, which are in turn divided into periods, epochs and ages.']
133416
The three major eras are the Paleozoic, the Mesozoic, and the Cenozoic. The Cenozoic era is the one we are in today.
1309941
Some 180 million years ago, in the Jurassic Period, the western half of Gondwana (Africa and South America) separated from the eastern half (Madagascar, India, Australia, and Antarctica). The South Atlantic Ocean opened about 140 million years ago as Africa separated from South America.
315441
VMS deposits typically form during periods of rifting, within volcanic arcs, fore arcs, and in extensional back arc basins. Rifting causes extension and thinning of the crust, allowing hot, subvolcanic magmas to rise and form metal-bearing hydrothermal cells that ultimately produce the VMS mineralization.
1364432
The Cretaceous period 145-66 million years ago was a period for active kimberlite volcanism in the Western Canadian Sedimentary Basin of Alberta and Saskatchewan. The Fort à la Corne kimberlite field in central Saskatchewan formed 104 to 95 million years ago during the Early Cretaceous.
1192388
['Formation of Earth - 4600 MY.', 'Oldest rocks yet discovered - 3950 MY.', 'Significant oxygen in atmosphere - 1500 MY.', 'Start of formation of Appalachian Mountains - 450 MY.', 'Start of supercontinent Pangaea (all continents pushed together) - 360 MY.', 'Abundant coal-forming swamps - 320 MY.']
1325830
The Phanerozoic Eon is divided into three eras, the Paleozoic, Mesozoic and Cenozoic eras.
142138
Currently, we're in the Phanerozoic eon, Cenozoic era, Quaternary period, Holocene epoch and (as mentioned) the Meghalayan age.
909125
['(i) Undersed earthquakes:', '(ii) Landslides:', '(iii) Volcanic Eruptions:', '(iv) Meteorites and Asteroids:']
542291
Mass extinctions happen because of climate change, asteroid impacts, massive volcanic eruptions or a combination of these causes. One famous mass extinction event is the one that lead to the extinction of dinosaurs, 65 million years ago.
322743
The story of the Fundy Basin begins about 200 million years ago in the early Jurassic, when all land on earth was part of a supercontinent called Pangaea.
1034826
The Appalachians, a heavily forested mountain range stretching more than 1500 kilometers from Georgia to Maine, were not always so tranquil. In fact, about 460 million years ago during the Ordovician period, they were the site of one of the most violent volcanic events in Earth's history.
1003708
Geology. The Glass House Mountains are intrusive plugs—remnants of volcanic activity that occurred approximately 25–27 million years ago. Molten rock filled small vents or intruded as bodies beneath the surface and solidified into hard rocks—trachyte and rhyolite.