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前人对白云鄂博矿床赋矿白云岩的成因主要有4种认识:①正常沉积;②岩浆侵入;③海底火山喷溢沉积;④与深源热卤水有关。笔者综合评述了这些认识的主要论据,阐述了笔者等的新发现——赋矿白云岩为大型微晶丘——它可以较好地解释这些看起来极为矛盾的地质事实。
There are four main types of genesis of dolomite ore-forming dolomite in the Bayan Obo deposit: ① normal sedimentation; ② magmatic intrusion; ③ submarine volcanic spill deposition; ④ related to deep-source hot brine. The author summarizes the main arguments of these understandings and elaborates the new findings of the author - ore-bearing dolomites as large microcrystal mounds - which can better explain these seemingly contradictory geological facts.