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作为从出山口至入海河口直线距离仅约20 km的短途河流,小凌河下游地区及相邻潮间带表层发育了砾石质冲洪积扇、曲流河道滞留相-点状砂坝-泛滥平原与洼地、贝壳砾石海滩、盐沼、开放潮坪下部与中上部等一系列沉积环境。通过沉积地层学、年代地层学及新构造等方面的综合研究,1)将中、晚全新世地层划分为7个年代地层单元,2)发现了夏-西周、元末-明初两道年龄分别约为2 050～650 BC和1 350 AD的古海岸线,3)确立了春秋、中唐-北宋初、“小冰期”结束以来3次小凌河沉积期,最有可能发育的时间进一步限定在约650～400 BC(第1期)、约700～1 000 A(D第2期)和1 850 AD以来(第3期),4)提出了NW向与NE向构造加剧小凌河下游曲流发育的假说。
As a short-distance river with a straight-line distance of only about 20 km from the outlet to the estuary, the alluvial fan of gravel alluvial-graded alluvial fan, Plains and depressions, seashells and gravel beaches, salt marshes, the lower part of the open tidal flat and the upper part of a series of sedimentary environment. Through the integrated study of sedimentary stratigraphy, age stratigraphy and neotectonics, 1) the middle and late Holocene strata are divided into 7 stratigraphic units; 2) The ancient coastline of about 2050 ~ 650 BC and 1 350 AD respectively, and 3) the most likely developmental time of the three Xiaolinghe sediments from the end of the “Little Ice Age” in the Spring and Mid-Tang Dynasty to the Northern Song Dynasty Further defined at about 650-400 BC (Phase 1), about 700-1000 A (Phase D 2) and at 1 850 AD (Phase 3), 4) proposed that the NW and NE configurations exacerbate the small Hypothesis of Meander Development in the Lower Reaches of the River.