泥盆纪末期生物大灭绝事件及在新疆西准噶尔的体现  

The Latest Devonian Mass Extinction Event and its Representations in West Junggar,Xinjiang

作　　者：宗普[1] Zong Pu(Institute of Geology,Chinese Academy of Geological Sciences,Beijing,100037,China)

机构地区：[1]中国地质科学院地质研究所,北京100037

出　　处：《新疆地质》2017年第2期122-126,共5页Xinjiang Geology

基　　金：国家自然科学基金(41502015;41290260);中国地质调查局项目(121201102000150010)联合资助

摘　　要：新疆西准噶尔泥盆—石炭系之交地层发育良好,是研究泥盆纪末期生物大灭绝事件(Hangenberg事件)的重要地区。以往对Hangenberg事件的研究主要依据世界其他地区资料,对西准噶尔资料关注不多。基于对沙尔布尔提山地区3个代表性剖面地层学分析,表明西准噶尔缺乏其他地区普遍发育的Hangenberg黑色页岩事件层。作为Hangenberg事件的响应,西准噶尔的弓石燕类(Austrospirifer?sp.)动物群更替为管孔石燕-石燕贝(Syringothyris-Spirifer)动物群;Hangenberg事件中,海神石类Cymaclymenia、若干棱菊石类分子及极少数镜眼虫科三叶虫分子在西准噶尔残存。该事件后,至杜内期早期,新类型棱菊石类Acutimitoceras出现于西准噶尔。The strata across the Devonian-Carboniferous boundary are well developed in West Junggar,and thus this area is of importance in studying the latest Devonian mass extinction event(Hangenberg event).Previous studies of this event have been mainly based on the data from other areas,while have paid less attention on the data from West Junggar.The stratigraphic analyses of three representative sections of the Shaerbuerti Mountains reveal that,in West Junggar,there is no lithological record similar to typical Hangenberg black shale as found in many other areas around the world.As a response to the Hangenberg event,the cyrtospiriferid brachiopod fauna was replaced in West Junggar by the Syringothyris-Spirifer fauna.The clymeniid Cymaclymenia,along with several goniatites and few Phacopidae trilobites,survived in West Junggar during the Hangenberg event.After this event,West Junggar saw the appearance of the new type goniatite Acutimitoceras in early Tournaisian.

关 键 词：大灭绝 西准噶尔 Hangenberg事件 管孔石燕-石燕贝动物群 海神石 

分 类 号：Q111.7[生物学—普通生物学]