อ้างอิง

                           https://geonoi.wordpress.com/2015/10/30/%E0%B8%A7%E0%B8%B1%E0%B8%8F%E0%B8%88%E0%B8%B1%E0%B8%81%E0%B8%A3%E0%B8%82%E0%B8%AD%E0%B8%87%E0%B8%AB%E0%B8%B4%E0%B8%99-rock-cycle/#jp-carousel-549

http://www.lesa.biz/earth/lithosphere/rocks/rock-cycle

https://www.youtube.com/watch?v=QgLUz7AbcRE

http://www.dmr.go.th/ewtadmin/ewt/dmr_web/main.php?filename=rocks