一、前言十三陵震旦亚界地层剖面位于北京十三陵附近,西北起德胜口马涟滩水库,东南止龙山山脊,全长八千余米。该剖面由碎屑岩、页岩、碳酸盐岩多次更叠,以碳酸盐岩为主的海相沉积物组成。除马岭组和铁岭组之间有沉积间断外,其余各组之间均呈整合接触。本文试从重矿物角 I. Preface The Sinian sub-stratigraphic section of the Ming Tombs is located near the Ming Tombs in Beijing. From the northwest, it leads to Ma Lansan Reservoir in Deshengkou and to the Longshan Ridges in the southeast, with a total length of 8,000 meters. The section is composed of clastic rocks, shale and carbonate rocks that are superimposed more than once and are mainly marine sediments of carbonate rocks. Except for the sedimentary discontinuities between Maling and Tieling formations, all the other groups showed integrated contact. This article try from heavy mineral angle