Articles tagged with Mountain Ranges
A new study reveals that interactions between landslides and erosion, caused by rivers, explains why some mountain ranges exceed their expected lifespan. The study found that large landslides can overwhelm river transport capacity, while landslides also deliver abrasive agents to streams, accelerating erosion.
Researchers found that a region in western North Carolina experienced a geological 'facelift' around 8 million years ago, with gentle hills and abundant waterfalls forming where steeper terrain existed previously. This uplift is attributed to the earth's mantle, which can well up and push the crust upward.
A new study links forest greenness in the western United States to fluctuating year-to-year snowpack extent, with mid-elevation mountain ecosystems found to be most sensitive to rising temperatures and changes in precipitation and snowmelt. The research provides important insights into the tipping point between water-limited forests an...
A new method developed by Tel Aviv University's Prof. Lev Eppelbaum successfully uncovered a previously unknown polymetallic reserve in the Caucasus mountainside, containing over 500,000 tons of copper, zinc, lead, aluminium, and gold-silver mixtures.
A team of researchers studied the Cantabrian Arc, a curved mountain range in Spain and northern Africa. They found that the curvy pattern was produced by the bending of an originally straight mountain range, supported by patterns of rotation of ancient geomagnetic field directions and analysis of faults and joints.
Researchers have detected high concentrations of arsenic, silver, lead, antimony, zinc, and uranium in the hydrothermal deposits of La Selva geothermal system. The groundwater in some areas has arsenic levels of up to 0.069 mg/l, far exceeding the recommended WHO limit of 0.01 mg/l.
Researchers have found that the Gamburtsev Subglacial Mountains were formed by multiple tectonic events over a billion years, rather than a single event. The mountains' youthful appearance is thought to be due to the preservation of ancient crustal roots and uplift caused by rifting.
Researchers reveal the geological history behind the formation of the Gamburtsev Subglacial Mountains, which took place over the last billion years. The discovery sheds light on mountain building and ice sheet evolution within continental interiors.
Research reveals that seamounts have comparable levels of diversity and endemism to continental margins, but their ecological communities are distinct in structure and higher in biomass. Seamount ecosystems are highly vulnerable to disturbance by bottom trawling and require decades for recovery.
Researchers have identified zones in the Iberian Peninsula with potential for moderate earthquakes, including parts of the Cordillera Cantábrica and Pyrenees regions. The study uses morphostructural zoning method to analyze topographic, geological, and geophysical data.
Scientists discover that smaller tectonic structures near larger faults in southeast Spain partially offset the risk of earthquakes, reducing seismic activity. By studying fossils and geological data, researchers found that these small faults help relax energy associated with plate convergence.
Drilled at 17,598ft above sea level in the Cordillera Blanca mountain range, the ice cores contain a number of insects and plant materials that may have originated from the Amazon Basin. The cores provide an annually resolvable record of climate conditions, allowing researchers to determine past temperatures and precipitation rates.
A new theory derived from information theory provides more accurate estimates of species richness in habitats of all sizes, from deserts to tropical rainforests. The method scales up from small plots to biomes and predicts that the number of new species found approaches zero as the area increases.
A U.S.-led team of scientists will use advanced radar and seismic tools to explore the Gamburtsev Mountain range in Antarctica. They hope to determine how this massive mountain range formed, defying geological understanding, and whether it played a role in shaping the East Antarctic Ice Sheet.
Most Alaskan glaciers are retreating and thinning, especially at lower elevations, while some are advancing, according to a comprehensive USGS study. The report uses satellite images and aerial photographs to document glacier behavior and distribution.
Researchers used topographic analysis to identify active faults in the Sichuan earthquake, which can help refine existing maps of earthquake risk. This approach can shed light on blind and hidden faults in remote mountainous areas.
A new study suggests mountain ranges like the Andes can rise rapidly, doubling their heights in a short period. The traditional theory of plate tectonics will need to be revised to include the process of delamination, which proposes that the 'root' beneath the crust heats up and breaks free, allowing mountains to quickly rise.
Geologists found that the central Sierra Nevada attained its present elevation 12 million years ago, 8-9 million years earlier than previously thought. This discovery has implications for understanding ancient global climates and modeling past weather patterns.
Geologists have developed a new theory explaining how and when the Appalachian Mountain range was created. The study reveals that the complex was originally attached to Gondwana before colliding with North America, closing the Rheic Ocean and forming Pangea.
Researchers found evidence that the Sierra Nevada range has stood tall for at least 40 million years, contradicting a recent uplift scenario. The study used chemical analysis of ancient raindrops to determine the mountain's elevation, which was similar in ancient and modern times.
A recent survey of Tanzania's Eastern Arc Mountain range has revealed over 160 animal species, including 11 previously undiscovered ones. The discovery highlights the urgent need for conservation efforts to protect the region's unique wildlife and forests.
Scientists have re-evaluated mountain building processes after discovering ancient mountain elevation data reveals a rapid uplift of the Andes between 10-7 million years ago. This suggests that 'deblobbing' - the detachment of dense mantle roots beneath the Earth's crust - may be responsible for mountain range formation.
Researchers reconstructed the Indus River's discharge over 30 million years and found a significant change in sediment source five million years ago. The study suggests that rivers were diverted from their original southeasterly flow by uplifted mountain ranges in modern-day Pakistan.
A team of University of Arizona geoscientists found that movement along faults created huge blocks of rock, lifting them 9,000 feet into the air to form Tucson's skyline. This discovery challenges previous theories on mountain formation in the western United States.
Active mountains, despite constant uplift, do not get taller because of erosion forces balancing uplift and sediment transport. Researchers found that river erosion rates closely match the rate at which rocks move up, with abrasion by suspended particles doing most of the down cutting.