無妃您
：第5期
2010年10月
现代地质 GEOSCIENCE
VoL 24Ne.5
Ort 2010
五台山南缘中元古界的层序地层特征及其古地理
意义：以山西五台陈家庄剖面为例
梅冥相
（中国地质大学地球科学与资源学院，北京100083）
摘要：中元古代时期的五台山南缘是华北克拉通北部的燕辽裂隙楠与南部的晋豫陕裂隙楷之间的交接地带。在该地区中元古界由常州沟组潮坪沉积体系碎屑岩地层和高于庄组潮坪沉积体系碳酸盐岩地层组成，常州沟组与下伏的早元古界津沱群为角度不整合接触，高于庄组与上覆的寒武系之间为地层间断时间超过1000Ma的平行不连续面；残留不全的元古界不但成为前寒武纪层序地层学划分的典型代表，而且成为窥视早期来自南部裂陷楷向北海侵以及晚期来自燕辽裂陷向南海侵的宝贵的物质记录，并且成为重新审视晋豫陕裂陷横与燕迁裂陷槽的争议较大的地层对比的关键地层记录。对山西五台沉积状剖面中元古界沉积序列及其所表征的层序地层学特征的观察和描述，为今后的进一步研究提供了有用的线索，因而具有重要意义。
关键调：层序地层；中元古界；陈家庄剖面；山西省五台县
中图分类号：P534.3
文献标志码：A
文章编号：1000-8527(2010)05088812
Sequence-Stratigraphic Features and Their Paleogeographical Implications for theMesoproterozoicof theSouthernMargin ofWutaiMountain:ACase
Studyof theChenjiazhuangSectioninWutaiCountyof
ShanxiProvince，NorthChina
MEI Ming-xiang
(School gf Earth Saiemoes and Resouroes, China Urnienay of Geoxciences, Bejing10083, China)
Abstract: The study area, i. e. the southem margin region of the Wutai Mountain, is a conjoining region be-tween the Jin-Yu-Shan in the southem part and the Yanliao Rift Troughs in the northem part of the Mesoproterozo-ic in the North-China Craton. A set of clastic rocks of the tidal-flat deposition system makes up the Changzhougou Formation, and a set of tidal-flat carbonate rocks does the Gaoyuzhuang Formation, both of which constitute the Mesoproterozoic of the study area. Its botom boundary is an angular unconformity covering the Paleoproterozoic Hutuo Group, and top boundary is a leurodiscontinuity with a stratigraphic hiatus more than 1,o0o Ma underly-ing the Cambrian system, Thus, the incomplete strata of the Mesoproterozoic become a true example for the study of sequence stratigraphy in the Precambrian, which is the key to peek the trangressive process from the Jin-Yu-Shan in the southem part in the early period and that from the Yanliao Rift Troughs in the northem part during the Mesoproterozoic in the study area, and provides a valuable stratigraphic record to correlate strata that remain uncertain. Further, the research and introduction on sequence-sequence features that are marked by depositional successions for the Mesoproterozoic at the Chenjiazhuang section in Wutai County of Shanxi Prov-ince will provide a useful clue for further study on the Precambrian sequence stratigraphy in the North-China
收稿日期：2010-03-15；改回日期：2010-06-08；贵任编辑：楼亚儿。
基金项目：国家自然科学基金项日（40472065）；中国石油化工股份有限公司海相前确性项日（C0800-07-ZS-164）。作者简介：梅相，男，教授，博士生导师，1965年出生，地层学专业，主要从事沉积学与地层学的研和教学工作。
Emsil; meimingiang@ 263, set