摘要
本文利用古生物、地球化学、岩石学和构造背景等证据证实该区为内陆湖泊沉积环境。然后，主要依据野外露头剖面和钻井地质剖面，对平邑盆地下第三系官中段湖相含膏碳酸盐岩进行了层序地层学的初步研究。根据准层序和层序界面标志，在平邑盆地官中段中识别出四个层序和十二个准层序。每个层序又包括高水位、湖侵和低水位三个体系域。对每个层序和体系域边界的识别标志和沉积特征进行了详细论述，并且建立了湖相含膏碳酸盐层序地层学模式。最后，讨论了在勘探开发上的意义。
Inland lake enovironment has been proved according to evidences of palaeontology,geochemistry, petrology and teconic setting.Then,baseds on the outcrop section and well core section, the authors studied sequence stratigaply in the area.Directed by sequence stratigqaphic theory,basis on the boundary of sequences and parasequence,the authors distinguished four sequences and twelve para-sequences.Every sequence was comprised by lowstand,transgressive and highstand systen tracts.The authors also discussed distinguished marks and sedimentary characterstics of each sepuence and system tract, aud established sequence stratigraphic model of lake facies gypsum-bearing carbonate rock.At last ,authors discussed the sig nificance in exploration and development.
出处
《沉积学报》
CAS
CSCD
北大核心
1999年第1期71-77,共7页
Acta Sedimentologica Sinica
