【摘 要】
：
Guanling biota has been found at the bottom of Wayao Formation of Upper Triassic (Carnic stage) near Xinpu town, Guanling County, Guizhou Province, China. There
【机 构】
：
The State Key Laboratory of Environmental Geochemistry,Guizhou Geological Survey
【基金项目】
：
Wang Kuancheng’s postdoctoral reward fund
论文部分内容阅读
Guanling biota has been found at the bottom of Wayao Formation of Upper Triassic (Carnic stage) near Xinpu town, Guanling County, Guizhou Province, China. There are a lot of crinoids and marine reptiles, which is a characteristic of Guanling biota, including ammonites, bivalve, brachiopod, fish, conodont and plant. These fossils are featured not only with the large quantity, but also with their extraordinary perfect forms. This paper explores the meaning, geological background, present situation of study and scientific significance of Guanling biota.
其他文献
对中太平洋莱恩海山富钴结壳MP5D17的各壳层样品进行了系统的锇同位素组成测定.研究表明,结壳中187Os/188Os比值变化较大,变化范围在0.4262～1.0155之间.从底部到顶部,结壳剖面
采用2000年8月在美国加州棉花地两个高度上应用超声三分量仪、快速响应温度和湿度仪进行的EBEX-2000 (International Energy Balance Experiment, 2000) 风速三分量、温度和
人类的生存状况与地质环境密切相关.文章以张宣地区为例,阐述了由于该区强烈的幔壳隆升,导致区域性岩(矿)石、土壤的元素背景值异常,使得某些农作物、林果"优质高产" 或"劣质
柴达木盆地北缘晚白垩世构造活动控制了现今中生代残余层序的分布.在分析中生代地层分布特征的基础上,通过对红山凹陷下白垩统的地层尖灭关系讨论、马海凸起中生代地层的剥蚀
川西前陆盆地具有丰富的天然气资源,发育上三叠统巨厚的煤系烃源岩,以生气为主,并发育多套储盖组合.天然气成因类型主要是煤成气,目前的气田分布主要受古隆起、沟通下部烃源
祁连山北缘冲断带是中国较早发现油田的地区之一,近几年来该区油气勘探又获得进一步突破.文中根据近几年得到的地震、钻井、地面露头资料,结合前人研究成果,分析了祁连山北缘
逆断层在活动期时易形成断层空腔,该空腔为天然气的穿层运移提供了畅通的通道,天然气在其中运移具涌流特征.如果断层空腔连通地表,天然气则大部分沿其逸出地表,仅有少量的天
Zircon U-Pb ages have been determined for basement gneisses in the Bayan Obo REE-Fe-Nb deposit. On the U-Pb concordia diagram data of three samples yield upper
Eclogites have been recently discovered in the Xitieshan area in the middle segment of the northern marginof the Qaidam basin. These eclogites, together with th
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7