中南大学学报（自然科学版）Issue(1)：149-158,10.DOI:10.11817/j.issn.1672-7207.2016.01.022
基性熔岩火山地层单元类型、特征及其储层意义
Types, characteristics and reservoir significance of basic lava flow units
摘要
Abstract
Based on profile measurements, the observation of the core samples, the interpretation of detection logging and seismic profiles, three typical fields and wells in Songliao Basin were chosen, and the types, the characteristics and the stacking patterns of the volcanic units were studied. The results show that the basic lava volcanic units can be formed by the diagenesis of solidification with cooling, and can be divided into four types according to their external morphology:the braid lava flow units, the fan-like lava flow units, the tabular lava flow units, and the tube lava flow units. The first three of these lava flow units are formed by the lava effusion on the ground, and the tube lava flow units are formed by the lava flowing along the buried tube underground. The internal structure of the lava flow units can be characterized by the vesicular zones. The braid lava flow units are divided into three parts:the rich vesicular zone on the tope, the spare vesicular zone in the middle, and the base vesicular zone at the base. The fan-like lava flow units have an autoclastic breccia zone on the rich vesicular zone, and a thin dense zone under the spare vesicular zone. The tabular lava flow units have a thick dense zone under the spare vesicular zone. The tube lava flow consists of a loop columnar zone in the outer ring and an autoclastic breccia core. The volcanostratigraphy is built by the stacking of volcanic units, and the spatial and temporal distribution of the lithology, and facies and reservoir are directly controlled by the shape and stacking patterns of lava flow units, and make up three distribution modes of reservoirs: the layered, the quasi layered and the mixed-lenticular. Thus this study may provide theoretic foundation for the final target attempt to define the fine characterization of the volcanostratigraphy using outcrop, well and seismic data.关键词
火山地层/火山地层界面/火山地层单元/叠置关系/火山岩储层Key words
volcanostratigraphy/volcanic boundary/volcanic unit/stacking type/volcanic reservoir分类
天文与地球科学引用本文复制引用
衣健,唐华风,王璞珺,高有峰,赵然磊..基性熔岩火山地层单元类型、特征及其储层意义[J].中南大学学报（自然科学版）,2016,(1):149-158,10.基金项目
国家自然科学基金资助项目(41472304)；国家重点基础研究发展规划(973计划)项目(2012CB822002，2009CB219303)(Project(41472304) supported by the National Natural Science Foundation of China （41472304）
Projects(2012CB822002,2009CB219303) supported by the National Basic Research Development Program (973 Program) of China) （2012CB822002,2009CB219303）
