Abstract:
The composition of the "Liaohe group" in Northern Liaoning Province is so complex that quite different plans have been put forwards on the division of the strata. In fact, the "Liaohe group" in Northern Liaoning contains not only strata with various ages, but also a little Permain ultrabasic rocks, granitic mylionite and dioritic mylionite. On the basis of field survey and study, the authors disintegrated the "Liaohe group" in Northern Liaoning. On the principle that no new stratigraphic unit is established, the strata are divided and incorporated respectively into Neoproterozoic Hongtoushan rock formation, Mesoproterozoic Sanchazi group, Neoproterozoic Xibaoan rock formation and Ordovician Xiaertai group.
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