Open AccessCorrelations Between Erosions and Relative Uplifts From the Central Inversion Zone of the Xihu Depression, East China Sea Basin
Author(s) -
ChunFeng Li,
Zhengchao Zhou,
Haiwen Ge,
Yunxin Mao
Publication year - 2007
Publication title -
terrestrial, atmospheric and oceanic sciences/terrestrial, atmospheric, and oceanic sciences
Language(s) - English
Resource type - Journals
eISSN - 2223-8964
pISSN - 1017-0839
DOI - 10.3319/tao.2007.18.4.757(tt
Subject(s) - china sea , geology , structural basin , inversion (geology) , china , oceanography , paleontology , geography , archaeology
Late Pliocene - early Pleistocene erosions and relative uplifts in the central inversion zone of the Xihu Depression, East China Sea Basin, are independently determined from reflection seismic data and sonic well-logging data, respectively. Relative uplifts estimated from linear least-square models of 26 sonic wells range from 0.0 to 501.3 m, while absolute erosions estimated on their respective well localities are generally larger, in the range of ~50.0 to 1147.5 m measured directly from seismic data, and ~70.0 to 1700.4 m after decompaction. Although discrepancies exist for several of the wells, a strong positive correlation can be found between erosions and relative uplifts. This good correlation verifies on the one hand that sonic well-logging data can give reasonably good estimates of relative uplifts, and on the other hand that erosions incurred during the basin inversion are strongly tectonically driven. Erosions and relative uplifts appear to be more exponentially than linearly interrelated