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The APXS analyses, however, produced some unanticipated results. Far from being similar in its chemical composition to the many martian igneous rocks analyzed by the Spirit and Opportunity rovers ...

Igneous rock is easier to date and could give researchers a more accurate way to estimate when Mars had water. The rock analysis was done by SuperCam, a Los Alamos National Laboratory-designed ...

However, suites of volcanic rocks erupted from individual volcanic centres rarely exhibit a compositional continuum between basalt and rhyolite. Instead, some rock suites exhibit marked ...

DAI’s team compared the composition of molybdenum isotopes in the Mesozoic-Cenozoic mafic igneous rock in the eastern North China craton and discovered a systematic difference, indicating a ...

“This rock is a close match in chemical composition to an unusual but well-known type of igneous rock found in many volcanic provinces on Earth,” said Edward Stolper of the California ...

Basalt is what’s known as an extrusive igneous rock - it is volcanic, formed from molten magma that extruded onto the Earth’s surface and hardened. It is dark in color and heavy and dense.

Although Jake_M is very different from known Martian rocks, Stolper and colleagues realized that it is very similar in its chemical composition to a relatively rare type of terrestrial igneous ...