IN the middle of the last century much interest was shown in the problem of the genesis of igneous rocks, and especially in the manner of origin of diverse rock-types from a common stock or from a ...

It shows a curious fracture surface due to a heavy gelignite detonation in finely crystalline “trap” rock. So far as I can remember I had seen other examples of this phenomenon, but ...

With our ideas of volcanoes we always associate the grand and the terrible ; and a volcanic eruption—a huge piece of artillery, with a mouth perhaps miles in circumference, shooting up rocks and ...

The rock was excavated from the Bushveld Igneous Complex in South Africa, an area known for its rich ore deposits. This is the oldest example of living microbes being found within ancient rock so ...

Extensive examples are given throughout to thoroughly elucidate complex topics and mathematical ... He studies fluid flow, chemical reactions, mass transfer, and heat transfer in Earth's lithosphere, ...

Igneous rocks — which form as magma solidifies either deep within Earth or at the surface after a volcanic eruption, for example — contain a limited number of minerals that crystallize ...

Scientists found living microbes in a 2-billion-year-old rock in South Africa, providing insights into early life on Earth ...

Microbes have been able to find a home in some truly incredible places, even inside of ancient rocks.... | Microbiology ...

Having been around for eons, these are the oldest examples of living microbes ... a sealed fracture in the ancient rock, ...

Discover the 2-billion-year-old microbes found trapped in a South African rock, revealing insights into early Earth and the ...

is supplied from igneous rock from Russia, South Africa, Brazil, and Finland. These igneous phosphate deposits are mostly from the Khibiny Alkalic Igneous Complex (Notholt, 1979) and the Kovdor ...