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十位中外科学家近日赶赴黑龙江中下游的黑龙江省嘉荫县进行野外探察,选定地层剖面,采集化石样本,寻找能够完整展现6500万年前生物灭绝与复苏事件的地层记录。领导这项研究计划的吉林大学孙革教授说:“我们将寻找一部能详细记录恐龙灭绝前后生物演变发展的‘不缺页史书’。”他说,这部“史书”应完整记录恐龙和其他大量古生物物种灭绝的原因,其后一些生物物种复苏的过程,以及这些事件发生时的地球环境。科学家们还将在200多米厚的地层剖面中寻找只有几厘米厚的白垩纪与第三纪分水岭即 K/T 界线,这条线是约6500万年前地球发生生物物种突然大灭绝的时间“点”。如能找到,他们期望
Ten Chinese and foreign scientists rushed to Jiayin County, Heilongjiang Province, in the middle and lower reaches of Heilongjiang Province to conduct field surveys and selected stratigraphic sections to collect fossil samples and search for stratigraphic records that fully demonstrated the biological extinction and resuscitation events 65 million years ago. Professor Sun Ge, from Jilin University, who led the research project, said: “We will look for a ’not missing page history book’ that records in detail the evolution of the dinosaurs before and after their extinction. ’” He said that this “history book” should The complete documentation of the causes of the extinction of dinosaurs and other large numbers of paleontological species, the subsequent resurgence of biological species, and the Earth’s environment at the time these events took place. Scientists will also look for a Cretaceous and Tertiary watershed that is only a few centimeters thick in the stratal section more than 200 meters thick, the K / T boundary, which is the date when the Earth’s biological species suddenly mass extinct about 65 million years ago. “point”. If can find, they expect