Palaeoenvironmental Reconstruction Of The Holocene Cheniers In The West Coast Of Bohai Bay

There are several cheniers formed in the West Coast plain of Bohai Bay since the mid to thelate Holocene, the chenier is a class of important geological in the West Coast plain of Bohai Bay,the characteristics of the Holocene geological evolution in the region are the formation of thechenier、disappear and its alternating with muddy sediments. Accurate record of the interactionbetween changes in the region-based environmental based environment to the marineinfluence and impact to land-based since the mid to the late Holocene. That the localenvironment has experienced number of changes.The auther with research Tianjin Geological Survey coastal of Quaternary Geology fornearly20years and the other researchers for nearly40years the consolidation of the chenier dataand a survey of the field existing chenier (Eijkelkamp gouge groove sampler for taking all theheart of total station surveys and height measurement),sampling and experiments (geochronology,particle size analysis and microfossils identification) to explore the West Coast chenier Holocenechenier material composition, shape, structure, causes distribution and age characteristics.The paper re-Textual research team has mastered more than100AMS14C dating data andadds the author’s own37AMS14C dating data, samples were sent to BeiJing University AMS14Cdating laboratory and Bate laboratory measurements. Predecessors dating chenier data with eachother, board for the new embankment has not been studied, to obtain first-hand chronology data.Thesis correction the spatial and temporal distribution of the chenier, certainly the chenierII-2support embankment (II-1and II-2) and the Sui Tang chenier(S-T) the presence and thechenier I embankment two possible (I-1and I-2), reveals the reason the middle of the old dike Ire-handling caused due to storm surge in the lower part-the age of the bottom of the inverted.Reveal the reason that the age of inverted storm surge handling again caused by the chenier I.According to the author measure the chenier floor morphological data, re-Textual the chenierbottom seaward tilt of the form. Trailing edge of the vertical range in the average spring tide tidalrange in many chenier floor standard of measurement, statistical chenier floor before theposterior margin of the average height difference of about1m, reveal shell dike formation beforeits backplane. Determine the chenier floor as a sign points to mark the sea change.Exploring the chenier in the West Coast of Bohai Bay,reveal the recorded ancientenvironmental change, it is very important to understand the formation mechanism of themuddy coastal zone in Bohai Bay,sea level and ancient climate change. Through the chenierscientists explore the sea and land into each other, analysis of the marine influence nearly fourdecades. Make the public aware of the chenier rare characteristics and the important role inscientific research, called for more attention to the chenier, actively involved in theprotection of the rare marine geological heritage.