This kind of channel evolution is affected mainly by the basement tectonic activity in Hebei Plain.
造成河道这种演化特点的主要原因是河北平原基底活动构造等因素的影响。
The wide range of ages of older zircon reflects the complex tectonic evolution of the basement in the area and multi-source material.
锆石年龄多组性表明了本区基底演化和源区物质的复杂性。
The tectonic evolution involved basement forming, volcanic basin forming and late erosion.
构造演化经历了基底和火山盆地形成及剥蚀三个阶段。
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