In one scenario for mineral fractionation between volcanic and plutonic rocks, eruptible felsic melt ... the presence of extreme outliers (for example, several orders of magnitude farther from ...

Keller and colleagues 1 report one of the most compelling examples ... of plutonic rocks (which formed from magmas that slowly cooled within the Earth) with those of volcanic rocks (formed when ...

"This study highlights how changes at Earth's surface, particularly in ocean chemistry, are recorded in the deep Earth ...

"The general assumption was that the moon is such a small body compared to Earth and Mars, for example ... rocks that Chang'e-5 brought back are about 2 billion years old, and they're volcanic.