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NDTV
5 days ago
- Science
- NDTV
Mystery Behind Antarctica Mountain Range Hidden For 500 Million Years Solved
Scientists have solved the mystery behind the mountain range buried under ice in East Antarctica for the last 500 million years. The mysterious and ancient Gamburtsev Subglacial Mountains are similar in shape and scale to the Alps, but not visible due to being trapped beneath kilometres of ice. First discovered by a Soviet expedition using seismic techniques in 1958, the Gamburtsev Mountains are buried beneath the highest point of the East Antarctic ice sheet. While most mountain ranges are eventually worn down by erosion or tectonic events, the Gamburtsev Mountains are preserved by a deep layer of ice, making it one of the best-preserved mountain belts on Earth. Mountains are formed by the collision of two tectonic plates and continue to change over time. The Himalayas are the biggest example after the Indian Plate and Eurasian Plate collided 50 million years ago. This range is rising even today, but Antarctica has been stable all this time, prompting the scientists to look for the secret behind it. According to a study published in the journal Earth and Planetary Science Letters, the mountain range first came into existence 500 million years ago when the Gondwana supercontinent formed from colliding tectonic plates. "The collision triggered the flow of hot, partly molten rock deep beneath the mountains," the authors wrote. "As the mountains continued to take shape, the crust thickened and heated, before becoming unstable and collapsing under their own weight." Other forces led the mountains to partially collapse as well. To further ascertain their hypothesis, the researchers turned to zircon, a mineral that acts like a geological stopwatch. These tiny crystals can survive for billions of years and contain uranium, which decays at a known rate, allowing scientists to determine their age with precision. These grains recorded peak mountain-building around 580 million years ago and the start of structural collapse by 500 million years ago. While gathering rock samples from the mountain remains difficult due to the logistics of drilling through the ice, the model developed by scientists offers new predictions about future exploration.
Time of India
23-05-2025
- Science
- Time of India
Earthquake of magnitude 4.3 hits Nepal
Representative Image (AI) KATHMANDU: An earthquake of magnitude 4.3 hit Nepal in the early hours of Friday, as reported by the National Center of Seismology (NCS). The NCS provided the details in a post on X. According to the NCS, the earthquake occurred at 01:33 hours at a depth of 10 kilometres in Nepal. It took place at latitude 29.36 N and longitude 80.44 E. "EQ of M: 4.3, On: 23/05/2025 01:33:53 IST, Lat: 29.36 N, Long: 80.44 E, Depth: 10 Km, Location: Nepal." There were no immediate reports of casualties or major damage. Further details are awaited. Shallow earthquakes are more dangerous than deeper ones due to their greater energy release closer to the Earth's surface, causing stronger ground shaking and increased damage to structures and casualties, compared to deeper earthquakes, which lose energy as they travel to the surface. Nepal is highly earthquake-prone due to its location on a convergent boundary where the Indian and Eurasian tectonic plates collide. This collision generates immense pressure and stress, which is released as earthquakes. Nepal is also situated in a subduction zone where the Indian Plate is sliding beneath the Eurasian Plate, further increasing stress and strain. Nepal lies in the Himalayan region, a zone of intense seismic activity caused by the ongoing collision of the Indian and Eurasian tectonic plates. This collision results in the Indian plate pushing beneath the Eurasian plate in a process called subduction, creating immense pressure and strain on the Earth's crust. The subduction zone further amplifies the stress, making Nepal highly vulnerable to earthquakes. The collision also contributes to the uplift of the Himalayan mountains, adding to the overall seismic activity in the region. Nepal has a long history of earthquakes, including devastating events like the 2015 earthquake. Earlier on April 26, a minute's silence was observed for 8,969 victims who lost their lives on April 25 2015, in the devastating earthquake of 7.8 Richter scale a decade ago. Standing below the replica of Dharahara Tower that fell down during the earthquake a decade ago, killing dozens, Nepali Prime Minister KP Sharma Oli remembered those killed in the natural disaster.
Times of Oman
23-05-2025
- Climate
- Times of Oman
Earthquake of magnitude 4.3 hits Nepal
Kathmandu: An earthquake of magnitude 4.3 hit Nepal in the early hours of Friday, as reported by the National Centre of Seismology (NCS). The NCS provided the details in a post on X. According to the NCS, the earthquake occurred at 01:33 hours at a depth of 10 kilometres in Nepal. It took place at latitude 29.36 N and longitude 80.44 E. "EQ of M: 4.3, On: 23/05/2025 01:33:53 IST, Lat: 29.36 N, Long: 80.44 E, Depth: 10 Km, Location: Nepal." There were no immediate reports of casualties or major damage. Further details are awaited. Shallow earthquakes are more dangerous than deeper ones due to their greater energy release closer to the Earth's surface, causing stronger ground shaking and increased damage to structures and casualties, compared to deeper earthquakes, which lose energy as they travel to the surface. Nepal is highly earthquake-prone due to its location on a convergent boundary where the Indian and Eurasian tectonic plates collide. This collision generates immense pressure and stress, which is released as earthquakes. Nepal is also situated in a subduction zone where the Indian Plate is sliding beneath the Eurasian Plate, further increasing stress and strain. Nepal lies in the Himalayan region, a zone of intense seismic activity caused by the ongoing collision of the Indian and Eurasian tectonic plates. This collision results in the Indian plate pushing beneath the Eurasian plate in a process called subduction, creating immense pressure and strain on the Earth's crust. The subduction zone further amplifies the stress, making Nepal highly vulnerable to earthquakes. The collision also contributes to the uplift of the Himalayan mountains, adding to the overall seismic activity in the region. Nepal has a long history of earthquakes, including devastating events like the 2015 earthquake. Earlier on April 26, a minute's silence was observed for 8,969 victims who lost their lives on April 25 2015, in the devastating earthquake of 7.8 Richter scale a decade ago. Standing below the replica of Dharahara Tower that fell down during the earthquake a decade ago, killing dozens, Nepali Prime Minister KP Sharma Oli remembered those killed in the natural disaster.
Mint
23-05-2025
- Science
- Mint
Earthquake Today: Tremors of magnitude 4.3 hits Nepal, no casualty reported
An earthquake of magnitude 4.3 hit Nepal in the early hours of Friday, as reported by the National Center of Seismology (NCS). The NCS provided the details in a post on X. According to the NCS, the earthquake occurred at 01:33 hours at a depth of 10 kilometres in Nepal. It took place at latitude 29.36 N and longitude 80.44 E. "EQ of M: 4.3, On: 23/05/2025 01:33:53 IST, Lat: 29.36 N, Long: 80.44 E, Depth: 10 Km, Location: Nepal." There were no immediate reports of casualties or major damage. Further details are awaited. Shallow earthquakes are more dangerous than deeper ones due to their greater energy release closer to the Earth's surface, causing stronger ground shaking and increased damage to structures and casualties, compared to deeper earthquakes, which lose energy as they travel to the surface. Nepal is highly earthquake-prone due to its location on a convergent boundary where the Indian and Eurasian tectonic plates collide. This collision generates immense pressure and stress, which is released as earthquakes. Nepal is also situated in a subduction zone where the Indian Plate is sliding beneath the Eurasian Plate, further increasing stress and strain. Nepal lies in the Himalayan region, a zone of intense seismic activity caused by the ongoing collision of the Indian and Eurasian tectonic plates. This collision results in the Indian plate pushing beneath the Eurasian plate in a process called subduction, creating immense pressure and strain on the Earth's crust. The subduction zone further amplifies the stress, making Nepal highly vulnerable to earthquakes. The collision also contributes to the uplift of the Himalayan mountains, adding to the overall seismic activity in the region. Nepal has a long history of earthquakes, including devastating events like the 2015 earthquake. Earlier on April 26, a minute's silence was observed for 8,969 victims who lost their lives on April 25 2015, in the devastating earthquake of 7.8 Richter scale a decade ago. Standing below the replica of Dharahara Tower that fell down during the earthquake a decade ago, killing dozens, Nepali Prime Minister KP Sharma Oli remembered those killed in the natural disaster.
NDTV
22-05-2025
- Climate
- NDTV
4.3 Magnitude Of Earthquake Hits Nepal
Kathmandu: An earthquake of magnitude 4.3 hit Nepal in the early hours of Friday, as reported by the National Center of Seismology (NCS). The NCS provided the details in a post on X. According to the NCS, the earthquake occurred at 01:33 hours at a depth of 10 kilometres in Nepal. It took place at latitude 29.36 N and longitude 80.44 E. "EQ of M: 4.3, On: 23/05/2025 01:33:53 IST, Lat: 29.36 N, Long: 80.44 E, Depth: 10 Km, Location: Nepal." EQ of M: 4.3, On: 23/05/2025 01:33:53 IST, Lat: 29.36 N, Long: 80.44 E, Depth: 10 Km, Location: Nepal. For more information Download the BhooKamp App @DrJitendraSingh @OfficeOfDrJS @Ravi_MoES @Dr_Mishra1966 @ndmaindia — National Center for Seismology (@NCS_Earthquake) May 22, 2025 There were no immediate reports of casualties or major damage. Further details are awaited. Shallow earthquakes are more dangerous than deeper ones due to their greater energy release closer to the Earth's surface, causing stronger ground shaking and increased damage to structures and casualties, compared to deeper earthquakes, which lose energy as they travel to the surface. Nepal is highly earthquake-prone due to its location on a convergent boundary where the Indian and Eurasian tectonic plates collide. This collision generates immense pressure and stress, which is released as earthquakes. Nepal is also situated in a subduction zone where the Indian Plate is sliding beneath the Eurasian Plate, further increasing stress and strain. Nepal lies in the Himalayan region, a zone of intense seismic activity caused by the ongoing collision of the Indian and Eurasian tectonic plates. This collision results in the Indian plate pushing beneath the Eurasian plate in a process called subduction, creating immense pressure and strain on the Earth's crust. The subduction zone further amplifies the stress, making Nepal highly vulnerable to earthquakes. The collision also contributes to the uplift of the Himalayan mountains, adding to the overall seismic activity in the region. Nepal has a long history of earthquakes, including devastating events like the 2015 earthquake. Earlier on April 26, a minute's silence was observed for 8,969 victims who lost their lives on April 25 2015, in the devastating earthquake of 7.8 Richter scale a decade ago. Standing below the replica of Dharahara Tower that fell down during the earthquake a decade ago, killing dozens, Nepali Prime Minister KP Sharma Oli remembered those killed in the natural disaster.
