Furthermore, many of the relic roots of the Maevarano Formation are encrusted with calcium carbonate or interspersed with irregular clumps of this mineral that are called carbonate nodules.

• 不只如此，梅法拉诺层有许多根部遗迹具有碳酸钙硬壳，不然就散布著碳酸钙的不规则团块，这些称为碳酸盐结核。