共 57 条
[11]
CASASOPRA S, 1948, SCHWEIZ MINER PETROG, V28, P127
[12]
ZIRCON AGES IN SOUTHWESTERN MINNESOTA
[J].
JOURNAL OF GEOPHYSICAL RESEARCH,
1963, 68 (07)
:2045-+
[15]
DAMON PE, 1968, RADIOMETRIC DATING G
[16]
GRAUERT B, 1966, EARTH PLANET SC LETT, V1, P139
[17]
Grauert B., 1968, Contributions to Mineralogy and Petrology, v, V20, P34
[18]
GRUENENFELDER M, 1966, GEOL SOC AM BULL, V77, P1202
[19]
GRUENENFELDER M, IN PRESS
[20]
GUNTHERT A, 1954, SCHWEIZ MINER PETROG, V34, P1