Geology
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Marine extinction intensity through time. The blue graph shows the apparent percentage (not the absolute number) of marine animal genera becoming extinct during any given time interval. It does not represent all marine species, just those that are readily fossilized. The labels of the "Big Five" extinction events are clickable hyperlinks; see Extinction event for more details. ( source and image info )
Extinction event - Wikipedia, the free encyclopedia
The following is a list of the world's 100+ highest mountains per height above sea level (>7,200 metres / 23,622 feet), all of which are located in central and southern Asia . Only those summits are included that, by an objective measure, may be considered individual mountains as opposed to subsidiary peaks . One of figures of topographic prominence : The prominence of a peak is the height of the peak’s summit above the lowest contour line encircling it and no higher summit. For example, vertical arrows show the topographic prominence of three peaks on an island. A dotted horizontal line links each peak (except the highest) to its key col. The dividing line between a mountain with multiple peaks and separate mountains is not always clear (see also Highest unclimbed mountain ).
List of highest mountains - Wikipedia, the free encyclopedia
List of mountains by elevation - Wikipedia, the free encyclopedia
This is an incomplete list of mountains on Earth arranged by elevation in metres above sea level .
Geology of the Alps - Wikipedia, the free encyclopedia
The Alps form part of a Tertiary orogenic belt of mountain chains , called the Alpide belt , that stretches through southern Europe and Asia from the Atlantic all the way to the Himalayas . This belt of mountain chains was formed during the Alpine orogeny . A gap in these mountain chains in central Europe separates the Alps from the Carpathians to the east.
Austroalpine nappes - Wikipedia, the free encyclopedia
The Austroalpine nappes are a geological nappe stack in the European Alps . The Alps contain three such stacks, of which the Austroalpine nappes are structurally on top of the other two (meaning they were thrusted over the other two).
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 subdivisions reflect the evolution of life; the Archean and Proterozoic are both eons, the Palaeozoic, Mesozoic and Cenozoic are eras of the Phanerozoic eon. The two million year Quaternary period, the time of recognizable humans, is too small to be visible at this scale. The geologic time scale is a system of chronological measurement that relates stratigraphy to time, and is used by geologists , paleontologists , and other earth scientists to describe the timing and relationships between events that have occurred throughout Earth's history .
Geologic time scale - Wikipedia, the free encyclopedia
The time scale printed in April/May 2009 GSA Today contained a spelling error (under ORDOVICIAN: HIMANTIAN should be HIRNANTIAN).
Geological Society of America - Geologic Time Scale
The Gates of Hell , Turkmenistan
While drilling in 1971, geologists tapped into a cavern filled with natural gas. The ground beneath the drilling rig collapsed, leaving a large hole with a diameter of 70 metres (The Gates of Hell). To avoid poisonous gas discharge, it was decided to burn it off.Scientists are sounding the alarm: the mysterious cracks appear across the planet
Scientists do not know what to think about: South America is bursting at the seams. In southern Peru, suddenly appeared a huge crack length of 3 km and a width of about 100 meters. Anomaly occurred in the district Huakullani Chukuito province near the famous Lake Titicaca. A crack has appeared almost immediately: the earth like a burst at the site of a large tension, the far scattered huge chunks of soil. Interestingly, the crack did not appear in the earthquake.
India - Cracks in Uttar Pradesh plains need monitoring, warns scientist -- Earth Changes -- Sott.net
© Unknown Long widespread cracks observed in several places in the Indo-Gangetic plains could be due to motion of a massive granitic body underneath, an Indian scientist in the United States has cautioned. "It is my sincere appeal to the government of India to monitor seismic activities in the area before any major disaster takes place," Ramesh Singh, who had extensively studied the seismology in that region, said in a statement as concern mounted over cracks being formed in several districts of Uttar Pradesh. "If the orientations of such long cracks are in the east-west direction, then the cracks could be due to stress on the surface of the earth due to motion of this massive craton (granitic body) which is exposed near Jhansi," Singh said.Hundred-foot sink hole opens up on Rainbow Beach | Courier Mail
Camper Shane Hillhouse said four-wheel-drives had been travelling along the popular stretch of sand, near Inskip Peninsula , shortly before the hole appeared. Gympie police duty officer Sergeant Vic Tipman said sink holes – which swallowed portions of beach as big as houses – were common at Inskip.Enlarge Brian Mann / NCPR Pam Machold's home on Little Porter Mountain has been so badly twisted by the Keene Valley landslide that local officials condemned the structure. In northern New York and Vermont, the disaster has developed slowly.
Slow-Motion Landslide Threatens Homes In New York : NPR
Volcanoes
Earthquakes