HispaniaSagrada
06-19-2013, 07:35 AM
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Major geological shift for planet: NOAA/NGDC image of the Atlantic crustal age of the ocean floor. Geologists have detected the first evidence that a passive margin in the Atlantic ocean is becoming active. The team mapped the ocean floor and found it was beginning to fracture, indicating tectonic activity around the apparently passive South West Iberia plate margin.
Published in Geology, new research led by Monash University geologists has detected the first evidence that a passive margin in the Atlantic ocean is becoming active. Subduction zones, such as the one beginning near Iberia, are areas where one of the tectonic plates that cover Earth’s surface dives beneath another plate into the mantle — the layer just below the crust.
Lead author Dr João Duarte, from the School of Geosciences said the team mapped the ocean floor and found it was beginning to fracture, indicating tectonic activity around the apparently passive South West Iberia plate margin.
“What we have detected is the very beginnings of an active margin — it’s like an embryonic subduction zone,” Dr Duarte said. “Significant earthquake activity, including the 1755 quake which devastated Lisbon, indicated that there might be convergent tectonic movement in the area.
>>> http://beforeitsnews.com/environment/2013/06/massive-section-of-ocean-floor-off-portugal-coast-beginning-to-fracture-2472438.html <<<
>>> http://www.sciencedaily.com/releases/2013/06/130617104614.htm<<<
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Major geological shift for planet: NOAA/NGDC image of the Atlantic crustal age of the ocean floor. Geologists have detected the first evidence that a passive margin in the Atlantic ocean is becoming active. The team mapped the ocean floor and found it was beginning to fracture, indicating tectonic activity around the apparently passive South West Iberia plate margin.
Published in Geology, new research led by Monash University geologists has detected the first evidence that a passive margin in the Atlantic ocean is becoming active. Subduction zones, such as the one beginning near Iberia, are areas where one of the tectonic plates that cover Earth’s surface dives beneath another plate into the mantle — the layer just below the crust.
Lead author Dr João Duarte, from the School of Geosciences said the team mapped the ocean floor and found it was beginning to fracture, indicating tectonic activity around the apparently passive South West Iberia plate margin.
“What we have detected is the very beginnings of an active margin — it’s like an embryonic subduction zone,” Dr Duarte said. “Significant earthquake activity, including the 1755 quake which devastated Lisbon, indicated that there might be convergent tectonic movement in the area.
>>> http://beforeitsnews.com/environment/2013/06/massive-section-of-ocean-floor-off-portugal-coast-beginning-to-fracture-2472438.html <<<
>>> http://www.sciencedaily.com/releases/2013/06/130617104614.htm<<<
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