黄河中游水系形成史初探

涉及黄河中游河道发育史的意见, 概括起来有两种观点:(1)认为从早第三纪开始孕育(1), 或在上新世晋陕间的黄河已具雏形, 并开始发育它的支流。笔者称这类意见为“早成说”;(2)张伯声认为本区唐县期侵蚀面是东南高西北低。“婴年黄河”在形成“红色黄土”(早、中更新世)沉积后才得以形成而进人华北平原。

PRELIMINARY STUDY ON THE FORMATION OF HYDROGRAPHIC NET ALONG THE MIDDLE REACHES OF THE HUANGHE (YELLOW) RIVER

Some block on rift system with NE of EW direction developed around the Ordos rhombic fault-the loess plateau in the Cenozoic. A number of individual lakes formed control of grabens in the rift systems developed, becoming confluence centres at under thethe places. From the Tertiary to Middle Plleistocene, garland-shaped water system was formed in the periphery of the block. Obviously, there was no river passing through the whole area in this geological time。