Potassium-argon dating
{"Image DocumentName": "Potassium-Argon Dating", "Image ImageDescription": "40K-40Ar\uf0e0 half-life = 1.3 billion years. Crystallization. 40K\uf0e040Ar. 40K. 40K\uf0e040Ar. 40K\uf0e040Ar. K-mineral. Closed system. Magma. Clock is ticking. Open system. Rock clock is reset. Age of crystallization.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}