Tag Archives: plate tectonics

Hot springs played a major role in the discovery of continental plate collision

Continental plate collisions usually result in the formation of mountains and mountain ranges due to the impact caused by the collision. (Photo: MARK RALSTON/AFP via Getty Images) How Hot Springs Helps Discover the Collision Point A previous crash recorded in the Converging Borders led to the formation of the Himalayan …

Read More »

Seismic Study Reveals Main Reason Patagonia Is Rising With Melting Glaciers

The ice fields that stretch for hundreds of kilometers atop the Andes Mountains in Chile and Argentina are melting at some of the fastest rates on the planet. The ground that was under this ice also shifts and rises as these glaciers disappear. Geologists have discovered a link between recent …

Read More »

Plate tectonics could be the source of all life on Earth (and on alien planets too)

Plate tectonic activity has been blamed for major earthquakes and tsunamis since the idea, first put forward in 1912 by meteorologist Alfred Wegener, has existed. Subduction forces obliterated entire continents during the 3.2 billion years that plate tectonics occurred on our 4.5 billion year old Earth. The planet’s crust is …

Read More »

Scientists use satellites to observe the Earth

Interior structure of the Earth. Getty By combining data on gravity, chemistry and how seismic waves are reflected and scattered deep within the Earth, an international group of scientists affiliated with the European Space Agency (ESA) have created a model of Earth’s lithosphere , showing how cold and hot rock …

Read More »

The attraction of the Sun and the Moon could move the tectonic plates

What causes lava to spurt from volcanoes in plumes of liquid fire or cause the ground to shake as if the world were ending? Tectonic plates. What causes plate tectonics? Not so fast. Until now, the answer was thought to be unrest in the Earth’s mantle. Under intense heat and …

Read More »

When two plates slide on top of each other

Through Robert Hazen, Ph.D., George Mason University Tectonic plates are large chunks of the lithosphere – about 50 or 100 kilometers thick, but thousands of kilometers in diameter – and lithospheric plates are displaced when they straddle the asthenosphere, which is mobile and moving. Transformation boundaries are a kind of …

Read More »

USGS raises volcanic alert level

View of the Davidof volcano captured in 2005. Image: CA Neal / AVO / USGS Due to the possibility of volcanic unrest, the United States Geological Survey (USGS) and its Alaska Volcano Observatory (AVO) have increased the warning level and color code to YELLOW / ADVISORY at Davidof Volcano in …

Read More »

Strange ‘eggshell’ exoplanets could have ultra-smooth surfaces

Weird, newly theorized “eggshell planets” may possess ultra-thin outer layers with ultra-smooth surfaces unlike those seen in any world to date, a new study reports. Astronomers may have already detected at least three eggshell planets, the scientists noted. In the past 25 years or so, astronomers have confirmed the existence …

Read More »

How astronomers reconstruct the surfaces of invisible alien worlds

The Universe is filled with planets. Astronomers have so far confirmed more than 4,500 worlds, of which more than 1,500 are rocky terrestrial planets. Within our solar system, the rocky planets – Mercury, Venus, Earth, and Mars – are very different from each other. But once you start looking at …

Read More »

A UoH professor selected for the SGAT 2021 award of excellence

Hyderabad: The Society of Geoscientists and Allied Technologists (SGAT) selected Dr KS Krishna, professor of geophysics and director of the Center for Earth, Ocean and Atmospheric Sciences at the School of Physics, University of Hyderabad for the prize of excellence SGAT 2021. SGAT is based in Bhubaneswar and is dedicated …

Read More »

Here is – the foldability of tectonic plates

A new study presents a new way for tectonic plates – massive plates of rock that jostle to position themselves in the earth’s crust and upper mantle – to bend and sink. It’s a bit of planetary Pilates that could solve the long-standing mystery of “subduction,” the process by which …

Read More »

Eggshell exoplanets: rocky worlds with ultra-thin brittle lithospheres could theoretically exist

The thickness of the fragile lithosphere – the outer part of a planetary body that fails by fracturing – plays a key role in the geological processes of that body. The properties of a planet and its host star can influence this thickness, and the potential range of these properties …

Read More »

Earth factories creating elements from nuclear transmutation

Cross section of the Earth’s interior: crust, upper and lower mantle, and outer and inner nuclei. Credit: Mikio Fukuhara, Alexander Yoshino and Nobuhisa Fujima Rather than being created only during supernova explosions, chemical elements could also be produced deep within the Earth’s lower mantle. It has long been theorized that …

Read More »

Challenging the Big Bang puzzle of the heavy comp

image: Cross section of the Earth’s interior: crust, upper and lower mantle, and outer and inner nuclei. seen Following Credit: Mikio Fukuhara, Alexander Yoshino and Nobuhisa Fujima WASHINGTON, October 12, 2021 – It has long been theorized that hydrogen, helium, and lithium were the only chemical elements that existed during …

Read More »

Rather than being created only in supernova explosions, chemical elements could also be produced deep within the Earth’s lower mantle – ScienceDaily

It has long been theorized that hydrogen, helium, and lithium were the only chemical elements existing during the Big Bang when the universe formed, and that supernova explosions, stars exploding at the end of their life. life, are responsible for transmuting these elements into heavier ones. and distribute them throughout …

Read More »

Mercury’s mantle goes with the flow

As the smallest of the terrestrial planets in our solar system, Mercury has much to teach us about the evolution of small rocky planets. Unlike Earth, whose tough outer layer, the lithosphere, is divided into a mosaic of plates that move relative to each other, Mercury is a single-plate planet. …

Read More »

The slow carbon cycle, sink and waste | Clubs And Organizations

Dive into the slow carbon cycle! Fluxes include: respiration and photosynthesis (between the biosphere, hydrosphere and atmosphere), sedimentation and metamorphosis (between the biosphere and lithosphere), weathering, erosion, volcanism and combustion of fossil fuels (between the lithosphere and the atmosphere), dissolution and degassing (between the hydrosphere and the atmosphere), and precipitation, …

Read More »

Earthquakes reveal the planetary core | SETI Institute

It has been an exciting week in the world of space science, with the publication of some groundbreaking stories. Let’s look at the results of three separate articles published this week in the journal. Science on the structure of Mars. The teams involved analyzed the data from NASA InSight lander. …

Read More »

Venus’s cracked surface behaves like sea ice

The Magellan spacecraft captured this radar view of Venus, showing the largest dark red tectonic block in the center, which is roughly the size of Alaska. The lighter colors around the block are warps and ridges. Image via NASA-JPL / Paul Byrne / NCSU. Cracked surface of Venus Venus is …

Read More »

The surface of Venus could be shattered into pieces

No other solid body in the solar system has an Earth-like crust. From Mercury to Mars, passing through many moons, most worlds have a one-piece crust. Rather, our planet has tectonics, large plates moving across the molten upper mantle. Another exception to the one-piece surface could be Venus, new evidence …

Read More »

USGS issued a yellow advisory for 6 U.S. volcanoes today

The Gareloi stratovolcano is the westernmost volcano in the United States. Image: USGS / McGimsey RG The USGS has issued a code yellow and advisory alert for six volcanoes they are tracking across the country; The USGS says these volcanoes “are showing signs of elevated unrest above known background level.” …

Read More »

The active surface of Venus examined

Credit: NC State University, based on original NASA / JPL images Despite their close similarities in terms of mass and composition, Earth and Venus have evolved differently, at least for the past 0.5 to 1 billion years. On the one hand, an uncontrollable greenhouse effect on Venus produced an average …

Read More »

Tectonic movements over Venus suggest hell planet may still be geologically alive | The Weather Channel – Articles de The Weather Channel

This image is a composite of data from NASA’s Magellan spacecraft and Pioneer Venus Orbiter. (NASA / JPL-Caltech) Venus, the “lost habitable” world of our solar system, is now considered a dead planet surrounded by a highly toxic environment. But in 2020, Venus hit the headlines after the detection of …

Read More »

Alarm over unprecedented accumulation of mercury in Pacific Ocean trenches – Eurasia Review

A scientific article recently published in Nature Publishing’s Scientific reports The newspaper found unprecedented amounts of highly toxic mercury being deposited in the deepest trenches in the Pacific Ocean. The study, a multinational effort involving scientists from Denmark, Canada, Germany and Japan, reports the first-ever direct measurements of mercury deposition …

Read More »

What is plate tectonics? | Tectonic plates

From the deepest ocean trench to the highest mountain, plate tectonics explains the characteristics and movement of the Earth’s surface in the present and the past. Developed from the 1950s to the 1970s, the theory of plate tectonics is the modern update of continental drift, an idea first proposed by …

Read More »

Small volcanoes are a big deal on Mars

Life may be at the center of exploration of Mars today, but our planetary neighbor is home to the largest volcanoes in the solar system. Olympus Mons towers 23 kilometers (75,000 feet) above the surrounding landscape, and its neighbors, the Tharsis Montes (Arsia Mons, Pavonis Mons and Ascraeus Mons), stand …

Read More »

Planet Earth – WorldAtlas

The Earth is a celestial object and one of the components of the solar system. It is the third planet from the Sun, and the only celestial object capable of supporting life. Earth is the 6th largest object in the solar system, with an average radius of 6,371 kilometers, and …

Read More »

Meteorite impacts may have triggered an ancient subduction

Meteorite impacts may have triggered an ancient subduction by Sarah Derouin Thursday February 15th, 2018 The frequent impacts of large meteorites during the Hadean Aeon may have caused temporary episodes of subduction and active plate tectonics on Earth. Credit: Conceptual Imagery Lab at NASA’s Goddard Space Flight Center. The Earth …

Read More »

Meteorites may have created Earth’s first continents

Meteorites may have created Earth’s first continents by Timothy Oleson Wednesday December 23rd, 2015 Earth and Venus were probably much more tectonically similar billions of years ago, when massive impact meteorites could have triggered the creation of an early continental crust, according to a new study. Credit: VL Hansen, Lithosphere, …

Read More »

5.1 Quake Rattles Atlantic; No threat of tsunami

The strong earthquake was located near the equator in the Atlantic Ocean. Image: USGS A magnitude 5.1 earthquake struck a few moments ago under the central Atlantic Ocean; fortunately, there is no threat of a tsunami. The strong earthquake took place at an epicenter about 6 miles deep, located at …

Read More »

Semi-brittle seismic deformation in the high temperature mantle mylonite shear zone along the Romanche transform fault

Abstract Ocean transformation faults, a key component of plate tectonics, represent first-order discontinuities along mid-ocean ridges, host large earthquakes, and induce extreme thermal gradients in the lithosphere. However, the thermal structure along transformation faults and its effects on generating earthquakes are poorly understood. We report here the presence of a …

Read More »

Aging satellite reveals Earth’s inner structure

The European Space Agency’s GOCE mission ended more than seven years ago, but scientists are still discovering substantial discoveries from gravity data from the retired satellite – allowing us to dive deep into the interior of the Earth and learn what makes him tick. Scientists have combined GOCE data with …

Read More »

What subduction teaches about smart design

Photo credit: USGS via Unsplash. My doctoral research focused on the tectonic history of early plates on Earth. Plate tectonics involves the movement of plates on the earth’s surface. It is believed to be driven by subduction, where one plate plunges into the mantle under another plate. Typically, this involves …

Read More »