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Unfortunately, before that can be done, we need to know the history of the rock.
A portion of this sample was crushed and milled into a fine powder.
During 17 so-called dome-building eruptions, from 18 October 1980 to 26 October 1986, thick pasty lava oozed out of the volcanic vent like toothpaste from a tube.1 Dacite lava is too thick to flow very far, so it simply piled up around the vent, forming the mountain-like dome, which now plugs the volcanic orifice.
Why does the lava dome provide an opportunity to test the accuracy of radioisotope dating? First, radioisotope-dating methods are used on igneous rocks—those formed from molten rock material. Fossil-bearing sedimentary rock cannot be directly dated radioisotopically.
It is the most well-known of our product lines, with a history reaching back to the beginnings of recorded time: Our Mahad Ad Dhahab (‘cradle of gold’) mine was actively mined as early as 3000 years ago.
Gold was the first commodity mined by Ma’aden and provided the foundation of our subsequent growth and diversification.