【摘 要】
：
Rare earth elements (REEs) are good geological indicators. In order to understand REEs stratigraphic significance, REEs m Late Permian coal measure from Bijie C
【机 构】
：
Key Laboratory of Isotope Geochronology and Geochemistry,Graduate University of Chinese Academy of S
论文部分内容阅读
Rare earth elements (REEs) are good geological indicators. In order to understand REEs stratigraphic significance, REEs m Late Permian coal measure from Bijie City, western Guizhou Province, China were studied. The results showed that the contents of both light rare earth element (LREE) and ∑ REE were sharply increased in the boundary between Longtan Formation and Changxing Formation, which resulted from the gyration and discontinuity eruption of Emeishan basalt (REEs source) and frequent transgression-regression during forming coal. The coal measure and strata could be subdivided and correlate, and the sea-level change could be under stood by studying REEs content variation in coal measure.
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