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河南夏馆-高丘盆地夏馆组无脊椎动物化石的新发现及地层划分对比 被引量:2

Discovery of Invertebrate Zoolite in the Xiaguan Formation of Xiaguan-Gaoqiu Basin,Henan,China,and its Importance for Stratigraphic Subdivision Comparison
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摘要 河南夏馆-高丘盆地出露一套富含恐龙蛋和恐龙骨骼化石的红色陆源碎屑岩系。20世纪70年代末,赵资奎(1979)将含蛋"红层"时代归为"白垩纪"。此后,该套"红层"曾称"高沟组"和"马家村组"、"桑坪组"、"夏馆组",但均没有测制正式地层剖面,无专门论文发表,原因是除恐龙(诸葛南阳龙)和恐龙蛋化石外,基本没有发现可资确定地层时代的无脊椎动物和植物化石。近年来,除新发现"河南宝天曼龙"外,2011年作者测制了系统剖面,并寻找到介形类、双壳类、腹足类、轮藻和植物大化石,有条件正式建立"夏馆组"组级地层单位并进行地层划分和对比。"夏馆组"的时代应为土伦(Turonian)中—晚期至坎潘(Campanian)中期。 d The red strata of a suite ofterrigenous clastic rock series of bearing-dinosaur egg and dinosaur skeleton fossils are exposed in the Xiaguan-Gaoqiu Basin of Henan Province. In the late 1970s, the chronologic age of the red strata containing dinosaur eggs was classified as the Cretaceous period by Prof. Zhao Zikui (1979). After this, it has been called Gaogou Formation and Majiacun Formation, Sangping Formation, Xiaguan Formation, but no survey has been conducted on theses stratigraphic sections. The reason is that there are no invertebrate and plant fossils that have been found to determine stratigraphic epoch except the dinosaur skeleton (Nanyangosaurus zhugeii) and dinosaur egg fossils. In recent years, in addition to the discovery of dinosaur skeleton fossil identified and named as Baotianmansaurus, the author chose the systematic stratigraphic sections in 2011 and the invertebrate fossils such as ostracods, bivalves and gastropods, charophyte and megafossils plant were found. On the basis of the above works, a stratigraphic unit "the Xiaguan Formation" of the formation level was established and used to carry out the stratigraphic subdivision and correlation. This discovery indicates the geologic age of the Xiaguan Formation may be the early-middle Late Cretaceous, and most possibly to be the middle-late Turonian to the middle Campanian.
出处 《地质学报》 EI CAS CSCD 北大核心 2013年第8期1049-1058,共10页 Acta Geologica Sinica
基金 河南省2009年度中央财政资助地质遗迹保护项目的成果
关键词 河南 夏馆-高丘盆地 夏馆组 白垩系 地层划分对比 Henan Xiaguan-Gaoqiu Basin Xiaguan Formation Cretaceous stratigraphyicsubdivision and correlation
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