All articles tagged with #kimberlite
Originally Published 1 month ago — by Indian Defence Review
A study published in Geology reveals that at least 8.2% carbon dioxide is essential for kimberlite magma to rise from the Earth's mantle and carry diamonds to the surface, improving understanding of diamond formation and exploration strategies.
Originally Published 3 months ago — by Earth.com
VR Resources discovered microdiamonds in two zones within a kimberlite drill hole on its Northway property in Ontario, indicating a potentially significant diamond-bearing system that warrants further exploration and sampling.
Originally Published 1 year ago — by IFLScience
A new discovery has made finding diamonds easier by linking the composition of olivine, a less sought-after gem, to the presence of diamonds. Olivine with higher magnesium concentrations indicates the likelihood of diamonds nearby, while high iron concentrations suggest the absence of diamonds due to geological processes. This method, supported by De Beers, simplifies the search for diamonds and provides insight into why previous methods worked.
Originally Published 2 years ago — by Business Insider
Scientists have discovered that the violent eruptions of diamonds to the Earth's surface are more likely to occur after continents break up, according to a new study. These eruptions, which have long puzzled researchers, are believed to be triggered by the breakup of supercontinents. The findings could aid miners in locating new diamond deposits. The eruptions are caused by a "domino effect" that pushes the diamond-rich magma closer to the center of continents as the Earth's crust is stretched and thinned during continental breakup. Understanding this process could also shed light on the interaction between the Earth's interior and its surface, including its impact on the environment and climate.
Originally Published 2 years ago — by SciTechDaily
Scientists from the University of Southampton have discovered that the breakup of tectonic plates is the main cause of diamond-rich magmas erupting from deep within the Earth. This breakthrough could revolutionize the diamond exploration industry by guiding efforts to locations where diamonds are most likely to be found. The research found that most kimberlite volcanic eruptions occurred 20 to 30 million years after the tectonic breakup of Earth's continents. The study also sheds light on how geological processes deep within the Earth can impact the surface environment and climate.
Originally Published 2 years ago — by The Guardian
Scientists have discovered the processes that cause powerful volcanic eruptions to propel diamonds high into the sky and scatter them across the Earth's surface. By analyzing historical data on continental plates and diamond-bearing rocks called kimberlites, researchers found that most kimberlite eruptions occurred about 25 million years after continental plates tore apart. The process starts when continental plates are stretched during rifting, causing disruptions in the mantle and breaking off chunks of rock. Over millions of years, carbon deposits in these rocks can transform into diamonds. The chunks of rock sink into the mantle, triggering disruptive flows that strip layers of rock from the bottom of the plate, leading to the formation of diamond-bearing kimberlite magma. Understanding these processes can help identify areas with the most potential for diamond deposits.