| 华北东北部晚中生代陆相地层、生物群及其年代学研究 |
| 点此下载全文 |
| 引用本文：柳永清,季强,姬书安,尤海鲁,吕君昌,旷红伟,江小均,彭楠,许欢,袁崇喜,王旭日.2010.华北东北部晚中生代陆相地层、生物群及其年代学研究[J].地球学报,31(S1):42-45. |
| DOI：10.3975/cagsb.2010.s1.23 |
| 摘要点击次数: 4020 |
| 全文下载次数: 5427 |
|
|
| 中文摘要:华北东北部晚中生代陆相地层十分发育，从下至上为九龙山组、髫髻山组、土城子组、张家口组、大北沟组、义县组和九佛堂组。它们主要的岩石组合为陆相火山岩熔岩、火山碎屑岩和间夹的河流-湖泊相沉积岩。九龙山组、髫髻山组（165-154 Ma）火山沉积岩系中发育以带毛恐龙（近鸟龙）、哺乳动物、翼龙和昆虫类等为代表的燕辽生物群（J2-J3），晚侏罗世末期土城子组时期(154-139Ma)该生物群大多数生物属种消亡，并在早白垩世早期（张家口组、大北沟组、义县组和九佛堂组）(144-120Ma)萌生新的生物群-热河生物群（K1），以恐龙、哺乳类、被子植物、鱼类和昆虫等为特征。中侏罗世-早白垩世燕辽生物群和热河生物群表现了明显的演化关系，响应着古环境变化与重大地质事件发生的复杂地球表层圈层作用。 |
| |
| Late Mesozoic Terrestrial Stratigraphy, Biotas and Geochronology in North-east China |
|
|
| Abstract:Late Mesozoic terrestrial strata are widely distributed across north-east China in western Liaoning, northern Hebei and southern Inner Mongolia. Due to the discovery of the famous Yanliao Biota ( J2-J3) (Ji et al., 2004), the Jehol Biota (K1) (Chen et al., 1999) and geological relationships with the destruction of the North Craton (Gao et al., 2004), Late Mesozoic strata and volcanic rocks in these areas have attracted the attention of paleontologists and geologists worldwide. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
|
|
