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Latest Plate tectonics Stories

Scientists Look At Supervolcano Life Cycle In Whole New Way
2013-10-11 14:49:13

Lee Rannals for redOrbit.com - Your Universe Online Scientists say they've discovered a new way to look at the life cycle of a supervolcano at a Yellowstone hotspot. University of Oregon researchers said that crystals of zircon from the Snake River Plain helped to solidify evidence of "recycled" super-volcanic magma chambers. This Yellowstone hotspot creates a conveyor belt style of volcanism because of the southwest migration of the North American plate at about 0.8 to 1.6 inches...

Wilson Cycle To Impact The Atlantic Ocean
2013-10-10 05:06:34

Lee Rannals for redOrbit.com - Your Universe Online Scientists believe they have uncovered evidence that a new subduction zone may one day close the Atlantic Ocean, according to an article in EARTH Magazine. Over a period of 300 million to 500 million years, supercontinents have formed and ocean basins have opened and closed. The latest high-resolution surveys of the seafloor is the first direct evidence of the in-between phase. “Every first-year geology student learns about the...

Iceland's Basalt Pillars Formed By Slow Lava And Water
2013-10-09 15:55:39

Brett Smith for redOrbit.com - Your Universe Online Icelandic folk legend has it that the rocky pillars in the country’s Skaelingar Valley were projectiles fired into the ground by armies of warring trolls. However, a new study in Journal of Volcanology and Geothermal Research indicates that these hollow pillars of basalt were formed by a very slow lava flow oozing from Iceland's volcanoes and interacting with water. The researchers’ conclusion is unusual because the mixing of water...

Study Shows Extrusive Volcanism Formed Hawaiian Islands
2013-10-07 09:17:25

University of Hawaii ‑ SOEST A recent study by researchers at the University of Hawaii – Manoa (UHM) School of Ocean and Earth Science and Technology (SOEST) and the University of Rhode Island (URI) changes the understanding of how the Hawaiian Islands formed. Scientists have determined that it is the eruptions of lava on the surface, extrusion, which grow Hawaiian volcanoes, rather than internal emplacement of magma, as was previously thought. Before this work, most scientists...

Volcano Experts Identify Source Of Largest Eruption In Past 3,700 Years
2013-10-01 16:24:02

Brett Smith for redOrbit.com - Your Universe Online Vulcanologist have identified the source of the largest volcanic eruption in the last 3,700 years, which was said to have created a ‘Pompeii of the East,’ according to a newly published report in Proceedings of the National Academy of Sciences. Using a wide range of scientific techniques, the study researchers were able to identify the Samalas volcano in Indonesia as the source of a 1257 AD eruption that sent volcanic ash around...

Scientists Document Scavenging For Oxygen In Seawater Circulating Through Deep Oceanic Crust
2013-09-27 11:16:26

Bigelow Laboratory for Ocean Sciences Although long thought to be devoid of life, the bottom of the deep ocean is now known to harbor entire ecosystems teeming with microbes. Scientists have recently documented that oxygen is disappearing from seawater circulating through deep oceanic crust, a significant first step in understanding the way life in the "deep biosphere" beneath the sea floor is able to survive and thrive. The new research findings were published in the journal Nature...

Earthquake Deep Below Sea Of Okhotsk Has Scientists Puzzled
2013-09-20 04:06:10

redOrbit Staff & Wire Reports - Your Universe Online Scientists know that on May 24, 2013, a magnitude 8.3 earthquake occurred beneath the Sea of Okhotsk off the coast of Russia. What they don’t know is how or why it happened. The earthquake occurred at a depth of approximately 378 miles (609 kilometers). However, according to Thorne Lay, professor of Earth and planetary sciences at the University of California, Santa Cruz (UCSC), and his colleagues, the intense pressure on the...

Scientists Reveal New Insight Into Formation Of Earth’s Continents
2013-09-16 17:42:14

Lee Rannals for redOrbit.com – Your Universe Online Scientists writing in the journal Nature Geoscience say they've unveiled more clues about how continents formed early in the Earth's history. The latest research provides strong evidence against continent formation above a hot mantle plume. Instead, the analysis indicates that the nuclei of Earth's continents formed as a byproduct of the mountain-building processes, by stacking up slabs of relatively cold oceanic crust....

Newly Discovered Seismic Waves Reveal Earth's Volcanic Hotspots
2013-09-06 08:40:14

April Flowers for redOrbit.com - Your Universe Online A previously unknown channel of slow-moving seismic waves in the Earth’s mantle has been discovered by a team of scientists from the University of California, Berkeley and the University of Maryland. These waves help to explain "hotspot volcanoes" that give birth to island chains such as Hawaii and Tahiti. The findings of this study have been published in Science Express. Hotspot volcanoes form in the middle of tectonic plates,...

Biggest Volcano On Earth At Bottom Of Pacific Ocean
2013-09-05 16:59:25

[ Watch the Video: Pacific Ocean Home To World's Largest Volcano ] Brett Smith for redOrbit.com – Your Universe Online Researchers, led by University of Houston professor William Sager, have been able to confirm the existence of the world’s largest single volcano at the bottom of the Pacific Ocean, according to an upcoming report in Nature Geoscience. Called Tamu Massif, the volcano covers an area about the size of the British Isles. Without a similar volcano here on Earth,...


Latest Plate tectonics Reference Libraries

Hualālai
2014-04-10 12:06:55

Hualālai is a dormant shield volcano that is located on the island of Hawaii and is one of five volcanoes that form the island. It reaches an elevation of 8,271 feet and is thought to have emerged from the sea about 300,000 years ago, making it the third youngest volcano on the island. Its shape is rough compared to younger volcanoes and it holds three rift zones that are covered with over one hundred cinder cones and spatter cones. Although it does not hold a caldera at its summit, it does...

Zubair Group
2014-04-10 10:08:46

Zubair Group, also known as Zubayr Group or Al Zubair Group, is a chain of volcanic islands belonging to Yemen that are located on top of a shield volcano in the Red Sea. Zubair Group The largest island, known as Zubair, is among the youngest islands, which also include Saba, Saddle, and Haycock. The shield volcano underneath the islands began a period of eruptions and eventually quieted down, followed by a period of explosive and effusive eruptions that formed the islands that are present...

Kohala
2014-04-10 10:03:58

Kohala is an extinct shield volcano that is located on the island of Hawaii and reaches an elevation of 5,480 feet. It is one of five volcanoes that comprise the island of Hawaii and is thought to be about one million years old, although it only emerged from the sea about 500,000 years ago. Because its last eruption is thought to have occurred about 120,000 years ago, based on studies conducted on hardened lava flows, this volcano is not thought to pose a threat to inhabitants on the island....

Santa María Volcano
2014-04-09 10:58:40

Santa María Volcano is an active stratovolcano that is located in Guatemala and is part of the Sierra Madre, a string of volcanoes that stretches across the western side of Guatemala. The volcanoes in this string were formed by subduction activity, when the Cocos Plate moved under the Caribbean Plate. An eruption in 1902 produced a crater that now holds a lava dome known as Santiaguito, which was created during another eruption in 1922. These domes hold active vents and in 1929, part of the...

Pacaya
2014-04-09 10:53:58

Pacaya is an active complex volcano that is located in Guatemala and is part of the Central American Volcanic Arc. It reaches and elevation of 8,373 feet and is located on a volcanic caldera, along with Lago de Amatitlán, that has been the cause of at least nine large explosive eruptions in the past 300,000 years. Its edifice collapsed about 1,100 years ago, producing a landslide that traveled sixteen miles and left a crater where the current cone is still forming. The active magma chamber...

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