【摘要】 东海盆地西湖凹陷古近系花港组主要为一套河流-三角洲-湖泊沉积,关于该区物源方向前人的研究表明主要来自凹陷西部的海礁-虎皮礁隆起带。从碎屑矿物成分成熟度、重矿物稳定系数、砂岩百分含量和地震相特征分析等方面,对该区花港组物源方向进行了分析。综合研究表明,西湖凹陷花港组物源来自凹陷的西部和东部两个方向,其中以西部物源为主。更多还原

【Abstract】 Huagang Formation in Xihu Sag was mainly consisted of fluvial,delta and lacustrine deposits.Based on predecessors’investigation,the sedimentary provenance in the area was mainly derived from western Haijiao-Hupijiao uplift zone.Based on the analysis of detrital mineral compositional maturity,heavy mineral stability coefficient,sandstone percentage content and seismic facies characters,the sediment provenance of Huagang Formation was analyzed.The results show that the provenance comes from two directions in Huagang Formation,one is the western source area and the other is eastern one.The western source is the main provenance.更多还原