Selected dissolution of plagioclase is the important origin to form intragranular solution pore, casting pore and super solution pore in feldspar or detritus grain.

• 斜长石固溶体的选择性溶解和溶蚀是长石或岩屑骨架颗粒中粒内溶孔、铸模孔及超大型溶孔发育的重要来源。