Alongside his team, he carried out a battery of computer simulations analyzing these movements, in order to understand how the event impacted the heat flows throughout the Moon’s interior and, ultimately, the distribution of KREEP materials throughout its body. Given this link between certain chemical elements and thermal energy - a link that holds true on Earth as well - Jones set out to understand how a significant asteroid impact would shift the internal chemistry of the Moon. Among the minerals that make up the name, KREEP also includes elements like thorium which are produced through atomic decay, a process that releases heat. PKT - with KREEP being short for potassium (K), rare earth elements (REE), phosphorus (P) - seems to be concentrated in and around Oceanus Procellarum, the largest of the nearside volcanic plains but is quite rare elsewhere on the Moon. Later missions would delve into the geochemical differences between these two faces as well, revealing that the nearside is defined by a chemical anomaly known as the Procellarum KREEP terrane (PKT). Apollo program finally put the Moon within our reach, giving humanity our first glance at the far side of the Moon. The difference between the two became apparent after the Soviet Luna missions and the U.S. On the other hand, the far side is littered with craters but lacks such lava flows almost entirely.Įxactly why the two are so different has long been an interesting but puzzling question. A vast surface of the nearside is dominated by the lunar mare, the dark-colored traces of ancient volcanism. The two faces of the Moon, one locked towards Earth, the other looking perpetually away, are two very different places. We expect that this contributed to the mantle melting that produced the lava flows we see on the surface.” “What we show is that under any plausible conditions at the time that SPA formed, it ends up concentrating heat-producing elements on the nearside. “The question is how that heat affects the Moon’s interior dynamics.”
candidate at Brown University and the study’s lead author. Not intended for children under 12.“We know that big impacts like the one that formed the SPA would create a lot of heat,” said Matt Jones, a Ph.D.
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