the National Natural Science Foundation of China(No.40072055,40232025); the Research Fund for the Doctoral Program of Higher Education(No.20040290005).
Fullerenes (C 60 /C 70 ), clays and rocks near the Permian-Triassic (P/T) boundary in the Meishan section of South China are explored by means of comprehensive analytical techniques, including ultrasonic extraction wi...