甘肃北山北部红石山地区泥盆纪雀儿山群及古孢子化石组合基本特征
Features of the Strata for Devonian Queershan Group in Hongshishan Area of Beishan’s Northern Belt, Gansu
-
摘要: 在1:25万红宝石幅(K47C002001)图幅中,雀儿山群分布于哈萨克斯坦板块南缘,红石山蛇绿混杂岩带以北地带的双沟山—雀儿山一带,为一套宏观色调为灰绿色中基性、中酸性火山岩及其火山碎屑岩夹碎屑岩和灰岩的岩石组合.碎屑岩及灰岩中含腕足、珊瑚、三叶虫、海百合茎等生物化石.其中:Latonotoechia cf.latana(Barrande)原产于波希来亚地区布拉格期.Acrospirifer cobed anus varius Kaplun见于哈萨克斯坦地区下泥盆统中上部和新疆的和布克赛尔组.Eoschuchertella guangxiensis Wanget Rong原于广西郁江组上部六景段.该群形成于与岛弧有关的滨浅海环境,在区域上可与新疆大南湖组、头苏泉组及和布克赛尔组对比.该群形成时代为早—中泥盆世,年代地层为下—中泥盆统.Abstract: Through 1:250000 geological mapping in Hongbaoshi area,Queershan Group is distributed in Shuanggoushan-Queershan area to the northern ophiolitic melange accumulation in Hongshishan in the southern margin of Kazakstan Plate.It consists of a set of celadon intermediate-basic,intermediate-acidic volcanic rocks and volcanic-clastic rocks intercalated clastic rocks.There are Brachiopoda,Anchozoa,Trilobita,Crinoidea et al.fossils in the clastic rocks and limestone.Latontechia cf.latana(Barrande) early formed in Barrandeehoch in Bo xilaiya region.A crospivifer cobedanus varius Kaplun have been discovered in Lower Devonian in Kazakstan region and Hebukeser Formatino of Xinjiang.Eoschuchertella guangxiensis Wang et Rong early formed in Yujiang Formation of Guang xi.This group formed in the litto ral-shallow marine facies which related to the island arc.It can compare with Dananhu Formation,Tousuquan Formation and Hebukeser Formation of Xinjiang.It formed in Early-Middle Devonian.
-
Key words:
- Beishan /
- Hongshishan /
- Devonian /
- Queershan Group /
- feature of strata
-
-
甘肃省地矿局,甘肃省岩石地层[M],武汉:中国地质大学出版社,1997.34-35.
甘肃地质局第二区测队.1:20万明水幅区调报告[R].1969.
甘肃省地层编写组.西北地区区域地层表·甘肃省分册[M].北京:地质出版社,1980:11-12.
甘肃省地矿局.甘肃省区域地质志[M].北京:地质出版社,1989:144-146.
新疆维吾尔族自治区地矿局.新疆维吾尔族自治区岩石地层[M].武汉:中国地质大学出版社,1999.
内蒙古地矿局.内蒙古岩石地层[M].武汉:中国地质大学出版社,1996.
左国朝,李茂松.甘肃北山地区早古生代岩石圈形成与演化[M].兰州:甘肃科学技术出版社,1996:69-70.
张二朋.西北区区域地层[M].武汉:中国地质大学出版社,1998.
魏志军,黄增保,金霞,等.甘肃红石山地区蛇绿混杂岩地质特征[J].西北地质,2004,37(2):13-17.
刘明强,等.1:5万红岭(K47E009001)等三幅联测区报告[R].兰州:甘肃省地质调查院,2004.
全国地层委员会.中国地层指南及中国地层指南说明书[M].北京:地质出版社,2001.
Bureau of geology and mineral resources of Gansu Province.Stratigraphy(Lithostratic)of Gansu province[M].Wuhan:China university of geosciences press,1997:34-35.
Bureau of geology and mineral resources of Gansu Province.Regional geology of Gansu Province[M].Beijing:Geological publishing house,1989:144-146.
Wei Zhijun,Huang Zengbao,Jin Xia,et al.Geological characteristics of ophiolite migmatitic complex of Hongshishan region,Gansu[J].Northwestern Geology,2004,37(2):13-17.
Zuo Guochao,Li Maosong.Formation and evolution of the early Paleozoic Lithosphere in the beishan area,Gansu-inner Mongolia,China[M].Lanzhou:Gansu science and technology press,1996:69-70.
-
计量
- 文章访问数: 2628
- PDF下载数: 3222
- 施引文献: 0
下载: