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Geology



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4Vote!

Venus Of Shadows 1 - Pamela Sargent

"Venus's first settlements had been the Islands, constructed to float in the planet's upper atmosphere slightly to the north of the equator. Platforms built on rows of large metal cells filled with helium were covered with dirt and then enclosed in impermeable domes. On the surface, construction equipment guided by engineers on these Islands had erected three metallic pyramids housing gravitational...

5Vote!

New Study Cites Lower Rate Of Quakes Along Some Subduction Zones

Most earthquakes occur along fault lines, which form boundaries between two tectonic plates.

5Vote!

New study cites lower rate of quakes along some subduction zones

Most earthquakes occur along fault lines, which form boundaries between two tectonic plates. As the relative speed of the plates around a fault increases, is there a corresponding increase in the number of earthquakes produced along the fault? According to this study published in the December issue of BSSA, the answer depends upon the type of tectonic boundary. On certain types of boundary, the efficiency...

5Vote!

December 2009 Geology and GSA Today highlights

Hot topics from this month's Geology include the nature of Martian sediments and minerals, microorganisms that thrive and survive for thousands of years in extremely salty environments, river flood dynamics, relative sea-level change in the UK, volcanism, geothermal systems, atmospheric carbon dioxide and extinction, anthropogenic atmospheric carbon dioxide and ocean acidification, Chicxulub impact...

3Vote!

[LINK] "Are Super Earths more habitable?"

The Dragon's Tales Will Baird comes up with the best links . And he a father of two! Astronomers have discovered hundreds of Jupiter-like planets in our galaxy. However, a handful of the planets found orbiting distant stars are more Earth-sized. This gives hope to astrobiologists, who think we are more likely to find life on rocky planets with liquid water. The rocky planets found so far are actually...

3Vote!

Fjordman: A History of Geology and Planetary Science Part 3

The third and final part of Fjordman’s history of geology and planetary science has been posted at Atlas Shrugs . Part one can be read here and part two here . Large sunspots may under certain conditions be seen by the unaided eye, but the modern study of them began around 1610 with the introduction of the telescope. Sunspots are strongly magnetic and appear darker because they are slightly cooler...

10Vote!

Fjordman Essay: A History of Geology and Planetary Science

Another Atlas exclusive essay written by the indefatigable historian Fjordman. This the third and final part of his history of geology and planetary science. Part one can be read here and part two here. A History of Geology and Planetary Science Fjordman Auroras in the Northern Hemisphere are called northern lights; in the Southern Hemisphere southern lights. They appear as arcs, clouds and streaks...

5Vote!

Geology: Impact ironed out

Geology37, 1011–1014 (2009) 10.1130/G30259A.1A huge meteorite or comet that smashed into North America 1.85 billion years ago was responsible for the abrupt end of certain iron deposits in the rocks around Lake Superior, say John Slack and

5Vote!

The Buzz: As the World Turns

As the Earth's tectonic plates shift and grind miles below our feet, we feel the effects on the surface in the form of earthquakes and volcanic activity. As Ed Yong of Not Exactly Rocket Science and Chris Rowan of Highly Allochthonous explain, earthquakes far from tectonic plate boundaries may be aftershocks of more violent seismic events along mid-continental faults that occurred hundreds of years...

4Vote!

Earth Surface Crack ‘Happened in Days’

According to research undertaken by Atalay Ayele of Addis Ababa University in Ethiopia, a 500 metre long, 60 metre deep crack in the Earth’s surface in Afar, Ethiopia, opened in several days. The eruption of the Dabbahu volcano is believed to have widened a rift in the African and Arabian tectonic plates; as volcanic magma spilled [...]

5Vote!

Earth science: Lasting earthquake legacy

Earthquakes occur within continental tectonic plates as well as at plate boundaries. Do clusters of such mid-plate events constitute zones of continuing hazard, or are they aftershocks of long-past earthquakes?

5Vote!

November 2009 Geology and GSA Today highlights

GEOLOGY covers a range of topics, including tsunami geomorphology, sag pond deposits, ooids and seawater chemistry, hillslope weathering, volcanoes and the nature of volcanic eruptions, minerals, marine sediments, paleoseismic faults, oxygen isotope records, bolide impact and banded iron formations, trace metal pollution from mining and metallurgy, tidal cycles, and Barchan dunes. The GSA TODAY science...

4Vote!

Edward Burtynsky's Devestating "Oil" (A Slideshow)

A landscape photograph by Edward Burynsky can be as frozen as it is arresting. But stare at his portraits of China's Three Gorges Dam or the Alberta tar sands , and you can almost make out Earth in motion. In his massive prints, the built and natural environments slam into each other like tectonic plates, driven by a global economy hurtling forward at full steam. Even if there's little actual oil...

5Vote!

Bedrock Of A Holy City: The Historical Importance Of Jerusalem's Geology

Jerusalem's geology has been crucial in molding it into one of the most religiously important cities on the planet, according to a new study.It started in the year 1000 BCE, when the Jebusite city's water system proved to be its undoing.

5Vote!

Carbon: Passive rider on the Earth/Space Machine

FROM- American Thinker By James R. Fencil Earth operates a network of molten upwellings from deep seams in the planet's crust which act to shove tectonic plates across the seafloors where these plates bump into continental land outcroppings. There the spreading plates subduct beneath the continental rims and simultaneously thrust mountains upward from sea level. Such crustal movements continue to alter...

The 2 latest articles published by users on Geology :

4Vote!

Oilfield Job: A Mudlogger's Career Advancement To Data Engineer ...

Oilfield Job: A Mudlogger’s Career Advancement To Data Engineer And Beyond The oil and gas industry is desperately looking for workers at all levels. They would prefer experienced workers, but beggars can’t be choosers - many of...

5Vote!

Rain Water Harvesting in Mumbai, India: Application of GIS::: Prakash M Apte

Rain Water Harvesting in Mumbai, India: Application of GIS Prakash M Apte Abstract: Surface water is inadequate to meet demands of our urban centres. While infiltration of rain water into the sub-soil has decreased, pressure of population growth and industrialization has accelerated the rate of drawing underground water in excess of the rate at which the water table gets recharged by natural means....