Correlations between shortening rate, uplift rate, and inversion rate in central inversion zone of Xihu depression, East China Sea basin

Abstract

Late Miocene shortening rate, uplift rate, and inversion rate in the central inversion zone of the Xihu (西湖) depression, East China Sea basin, were independently determined from a large number of 2D reflection seismic data and methods. Shortening rate was estimated from the 2DMOVE balanced cross-section technology, uplift rate was calculated after absolute erosions were determined from seismic data during the uplifting time, and inversion rate was measured using the improved calculation method by Song (1997). The cross correlations among shortening rate, uplift rate, and inversion rate show a good positive relationship, with some differences existing in local areas. This article analyzes the cross correlation between these structural rates and discusses the dynamics of mechanisms for basin inversion and their influence on hydrocarbon accumulation.

Keywords

basin inversion / shortening rate / uplift rate / inversion rate / cross correlation / Xihu depression / East China Sea basin

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