The main part of the Holocene stratigraphic section at Biaokou Village, Ninghe County, Tianjin Municipality is composed of oyster reef and 6 silt interbeds. This sedimentary sequence was thought to be products of sea level fluctuation in the period of 6500-3000 a B.P. by some scientists. The present mollusks Ostrea gigas and O. virularis, which compose the oyster reef, live in the environment from low tidal level to 10 m sea water depth and more with salinity of 10‰-30‰. Ostrea gigas and O. virularis are not ideal water depth indicators, although can give some information. Growing up and disappearance of the oysters in the section was controlled by the changes of depositional rate but not sea level fluctuation. The Holocene stratigraphic section at Biaokou Village can not indicate existences of high sea level during 6500-5000 a B.P. and sea level fluctuation during 5000-3000 a B.P.
XUE Chun-Ting
. Discussion on Relationship between Holocene Sea Level Fluctuation and Biaokou Section, Ninghe, Tianjin, China[J]. SCIENTIA GEOGRAPHICA SINICA, 2003
, 23(1)
: 49
-51
.
DOI: 10.13249/j.cnki.sgs.2003.01.49
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