Seams in the anorthosite series are only intermittently exposed .

斜长岩组中的矿层仅断续出露。

The study authors propose another , more radical , explanation : the crustal rock they analyzed , called ferroan anorthosite , is not linked to magma dynamics at all .

这项研究的作者提出了一个更大胆的解释：他们分析了这种被称为铁斜长岩的月球地壳岩石，发现其并不与岩浆的运动相联系。