Lightning Induced (Remanent) Magnetism, LI(R)M also possible find using GOOGLE, for instance on www.archaeophysics.com (and many other)
Kidlat sapilitan (Remanent) pang-akit, li (R) M din posibleng makita gamit ang GOOGLE, halimbawa siya www.archaeophysics.com (at marami pang ibang)