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地理气候

地质地貌
2022-12-14    【字体:

工(gong)(gong)程地(di)(d꧂i)壳(qiao)地(di)(di)理面貌(mao)在工(gong)(gong)程地(di)(di)壳(qiao)上(shang)(shang),曲周县属海江河域,是中生代到(dao)晚期演变成(cheng)(cheng)(cheng)的(de)有(you)(you)一(yi)位独力的(de)工(gong)(gong)程地(di)(di)壳(qiao)机构單元。在古白(bai)矮(ai)星時期,因(yin)地(di)(di)壳(qiao)的(de)更(geng)变,曲周县区呈拗(ao)陷起伏不定重复阶段,到(dao)三纪(ji)末被(bei)一(yi)大批的(de)陆相沉(chen)淀积累(lei)物填平(ping),成(cheng)(cheng)(cheng)有(you)(you)一(yi)位规范的(de)拗(ao)陷沉(chen)淀积累(lei)冲(chong)积冲(chong)积平(ping)原(yuan),后(hou)期由持续的(de)沉(chen)淀积累(lei),有(you)(you)点是淮(huai)河、漳河、洺河、沙河的(de)冲(chong)积,慢(man)慢(man)地(di)(di)演变成(cheng)(cheng)(cheng)在这里的(de)冲(chong)积冲(chong)积冲(ꩵchong)积平(ping)原(yuan)。地(di)(di)表绝对(dui)标高(黄河)在45.4至32.7米(mi)之间。地(di)(di)势由西南向东北倾斜,地(di)(di)面降坡(po)1/3000左(zuo)右,地(di)(di)势平(ping)坦(tan)。历史上(shang)(shang)因(yin)境内河流经常泛滥(lan),受(shou)其冲(chong)积的(de)影响,境内形(xing)成(cheng)(cheng)(cheng)冲(chong)积堆(dui)、扇形(xing)地(di)(di)、缓(huan)岗缓(huan)坡(po)地(di)(di)等复杂地(di)(di)貌(mao)。


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