Analysis of the correlation method of inter-borehole strata for the construction of a Quaternary 3D geological configuration model of Hangzhou City

Abstract：The construction of a 3D geological configuration model is one of the main contents of urban geological investigations that are being carried out in Hangzhou City. The construction of an accurate model mainly depends on the accurate inter-borehole stratigraphic correlation；so it is a very important subject to determine an appropriate stratigraphic correlation method suitable to local areas. In this paper, an analysis is made on the traditional correlation method and the method of high-resolution stratigraphic correlation of the Quaternary used in the 1:250000 regional geological mapping of the Hangzhou City Sheet. According to the theory of high-resolution sequence stratigraphy and criteria of correlation, combined with the sedimentary characteristics of the estuary area where the Hangzhou-Jiaxing-Huzhou plain is located, a new inter-borehole Quaternary stratigraphic (rock) correlation method suitable to this area is put forward.