【摘 要】
：
The Sichuan Basin,also known as the \'Red Basin\',is famous for its abundance of Mesozoic dinosaur fossils,especially in the Zigong area during the Jurassic era;the Middle Jurassic Shunosaurus and the Late Jurassic Mamenchisaurus faunal assemblages ar
【机 构】
：
Institute of Deep Time Terrestrial Ecology,Yunnan University,Kunming 650091,China;Research Center of
论文部分内容阅读
The Sichuan Basin,also known as the \'Red Basin\',is famous for its abundance of Mesozoic dinosaur fossils,especially in the Zigong area during the Jurassic era;the Middle Jurassic Shunosaurus and the Late Jurassic Mamenchisaurus faunal assemblages are the most representative.The Qinglongshan dinosaur fossil site is located in Fuxing,to the northwest of Rong County,Zigong City.This new site is situated within the Middle Jurassic Xiashaximiao Formation,and geologically is roughly equivalent to the well-known Dashanpu dinosaur fossil site.More than 600 dinosaur fossils were found concentrated in the excavation area,including teeth;cervical,dorsal and caudal vertebrae;and various parts of appendicular skeletons.This fossil site is also most significant as it provides new information on non-avian dinosaur life during the poorly understood Middle Jurassic.
其他文献
一个长得像外星生物的物体,竟然是棉花纤维;看似是植物种子的颗粒,居然是铝合金微粒;在显微镜下,人的死皮细胞看上去就像一团团被捏皱的纸……看过这些显微图片的人,无一不因灰尘中的奇怪物体而好奇.和我们同在一个屋檐下的灰尘中,还藏着哪些不为人知的秘密?
2021年6月,由15头亚洲象组成的“旅行团”在跋涉500多千米路程后,到达了昆明市晋宁区.野象路过的田埂上一棵棵芭蕉腰断肢残,玉米地里齐腰深的玉米东倒西歪,水稻也被破坏得一团糟.野象白天睡觉,晚上徒步,进入村庄后便开始觅食,渴了就用鼻子拧开水龙头暴风式吸水,半夜饿了就去村民田里吃玉米,其中一头小象竞因为吃了200斤的酒糟后“醉倒”而“掉队”.得知野象要来,村民们都不敢点灯,整个村庄悄无声息.
常见的波速比计算软件使用和达法.和达法利用时间域信息,存在一定局限性.本文采用波谱分析法得到震源谱参数,利用纵横波拐角频率比值和纵横波位移谱零频极限比值求波速比.在MATLAB平台下,编写软件将计算过程流程化,实现地震序列波速比批量自动计算.同时,将波速比计算结果以图像显示,取得了较好的效果.
The year 2022 marks the 100th anniversary for the founding of the Geological Society of China (GSC),one of the oldest scientific societies in China.The GSC was established to address a pressing need for like-minded people to exchange and disseminate ideas
化肥的使用给人类带来了创历史纪录的高产农作物.大多数化肥的主要成分是氮(N)、磷(P)和钾(K),它们可使植物生长得更快、更大.与此同时,大量使用杀虫剂也可击退危害植物的天敌,从而有利于农作物的增产.从1960年到2000年,世界人口翻了一番,但全球粮食产量增长更快,翻了三倍,这是农业生产取得的空前伟大的成就.
数千年来,有83具遗骸一直被埋在叙利亚北部迪加德·阿尔穆格哈拉的一座名为“死亡之屋”的院落土地下.这些人的死亡原因完全出乎考古学家的意料——其中5具遗骸有曾患肺结核的迹象,这说明结核病的出现时间比考古学界之前认定的人类首次患结核病的时间早了约2000年,这究竟是怎么一回事?rn古老结核病至今仍嚣张rn结核病(通常累及肺部)是折磨人类的最致命的传染病之一,目前每年至少有170万人死于结核病.而在迪加德·阿尔穆格哈拉的这一发现——大约1万年前死亡的人患过结核病,很可能帮助科学家揭示结核病源自哪里、如何使人类患
The northern margin of the North China Craton (NCC) contains widespread Permian magmatic rocks,but the origin of these rocks remains controversial.This uncertainty hampers us from better understanding of tectonic framework and evolution of the eastern Pal
Tourmaline geochemical and boron (B) isotopic compositions in two-mica granites (TMG),tourmaline-bearing leucogranites (Tou-LG),tourmalites and metapelites from the Gyirong-Malashan areas of the Himalayan orogen provide evidence for country rock assimilat
有人说,天堂般的香格里拉是中华大地上最令人向往的地方之一.但深入滇西北,你会发现一片与香格里拉同样接近天空的净土——维西.这里地处世界自然遗产“三江并流”腹地,素有“横断山脉中的绿宝石”的美称.这里屹立着积雪终年不化的白马雪山,有仙境一般的原始森林.维西人烟稀少,自古只有一条人马驿道通向外界.维西是陶渊明笔下的“世外桃源”,也是滇西北野生动物的生命之舟.生活在这里的人们,世世代代齐心守护着滇金丝猴.
Shallow carbonate deposits (Tarbur Formation) were formed in the Zagros foreland basin with dynamic tectonics during the Maastrichtian age.From the viewpoint of reconstruction of depositional conditions in these deposits,studies of biostratigraphy,microfa