“岩组—层序”填图方法探讨与实践

本文介绍了宣风图组 1:5万区调为将层序地层研究成果用于填图而形成的以岩石、年代、层序为主的多重地层划分研究及“岩组—层序”填图方法。实践证明这种方法比单纯的岩石地层单位填图具有一定的优越性 ,表现在研究程度和制图水平显著提高 ,地质图具有岩石、层序双重含义 ,为海平面升降、全球对比、盆地充填等重大地质基础问题及地质找矿和成矿预测提供了更多更广的地质信息

The discussion and practice of mapping method of “petrofabrics-sequence”

In this paper, the authors describe the multiple stratigraphy classification st udy on petrology, chronostratigrapny and sequencestratigraphy and mapping methad of“petrofabrics-sequence”used in geological survey (1:50000) of Xuanfeng area . Through the practice, this method is better than that of mapping by petrostrat igraphy unit to get both petrology and sequencestratigraphy geological map showi ng more informations about sea level change, globe constrast, basin filling and geological prospecting.