Pure N2 inclusions have been observed only in fresh coesite-bearing eclogites, whereas highly brine inclusions exist almost throughout the ultrahigh pressure (UHP) metamorphic rocks.

• N2包裹体仅见于含柯石英榴辉岩,而高盐度流体包裹体则几乎存在于所有的榴辉岩和硬玉石英岩中。