Li H, Luo X, Liu LP et al (2008) A discussion on depositional environment in Late Permian and distribution of reef-bank in Sichuan Basin. Handford CR, Loucks RG (1993) Carbonate depositional sequence and systems tracts responses of carbonate platform to relative sea-level changes. Geological Society of America Special Publications, pp 1–45įeng CJ, Zhang JQ, Guan JM (1988) The Upper Permian sedimentary facies in Sichuan Basin and their tectonic controls. Acta Pet Sin 37:1): 1–1):16įaulds JE, Varga RJ (1998) The role of accommondation zones and transfer zones in the regional segmentation of extended terrane, vol 323. Petroleum Industry Press, Beijingĭu JH, Wang ZC, Zou CN et al (2016) Discovery of intra-cratonic rift in the Upper Yangtze and its control effect on the formation of Anyue giant gas field. Petroleum Industry Press, Beijingĭu JH, Xu CC, Wang ZC et al (2010b) Nature gas exploration of Permian-Triassic reef & oolite in Sichuan Basin. Geoscience 25(4):617–625ĭu JH, Wang ZM, Li QM et al (2010a) Oil and gas exploration of Cambrian-Ordovician carbonate in Tarim Basin. AAPG Mem 81:309–328Ĭhen FJ, Wang XW, Chen ZN (2011) Analysis of transform structures in extensional fault depressions. Sea level and environmental changes also affected the time-space migration and internal sedimentary texture of the organic reefs as well as the vertical superposition pattern of the reefs in the Changxing Formation.īachtel SL, Kissling RD, Martono D et al (2004) Seismic stratigraphic evolution of the Miocene-Pliocene Segitiga Platform, East Natuna Sea, Indonesia: the origin, growth, and demise of an isolated carbonate platform, in Seismic imaging of carbonate reservoirs and systems. The structural segmentation effect caused by the transfer structures that developed on both sides of the rifts caused progradation in the margin of the platform. The synsedimentary activities of the basement rifts controlled the variations in growing spaces and thicknesses of the organic reefs. The differential tectonic subsidence, the uplifting and subsidence of the sea level, and environmental impacts (monsoon and ocean currents) were major factors controlling the evolution, external morphology, and internal structure of the organic reefs on the periphery areas of the rifts. The superimposed degree of the fault systems in the equidirectional transitional zones and the equidirectional accommodation zones had important impacts on the topography and structural relief of the rift. Studies suggest that transfer structures were developed on both sides of the rifts in the Changxing period. In addition, the organic reef genesis sites in the periphery areas of the rifts in the Changxing period are analyzed for both the tectonic aspects and depositional background. The external morphology and internal structure of the organic reefs are described. The organic reefs in the periphery areas of the rifts can be divided into two categories: accretionary platform margin reefs and progradational platform margin reefs. Outcrops, drilling, and 2D and 3D seismic data covering the entire basin were used to study the structure of the periphery areas of the intracratonic rift formed in the Late Permian Changxing Period, and seismic responses for the organic reefs were also used. A total of 3 intracratonic rifts were developed during the Changxing period in the Sichuan Basin, and organic reefs developed in the periphery areas of the rifts.

Oolite growth rate diagram