东阿尔卑斯原-古特提斯构造演化  

Tectonic evolution of Proto-and Paleo-Tethyan in the East Alps

作　　者：袁四化 刘永江 NEUBAUER Franz 常瑞虹 GENSER Johann 关庆彬 黄倩雯 YUAN SiHua;LIU YongJiang;NEUBAUER Franz;CHANG RuiHong;GENSER Johann;GUAN QingBin;HUANG QianWen(College of Earth Sciences,Institute of Disaster Prevention,Sanhe 065201,China;Key Lab of Submarine Geoscience and Prospecting Techniques,Frontiers Science Center for Deep Ocean Multispheres and Earth System,MOE,College of Marine Geosciences,Ocean University of China,Qingdao 266100,China;Laboratory for Marine Mineral Resources,Qingdao National Laboratory for Marine Science and Technology,Qingdao 266237,China;Department Geography and Geology,University of Salzburg,Salzburg A-5020,Austr)

机构地区：[1]防灾科技学院地球科学学院,三河065201 [2]中国海洋大学海底科学与探测技术教育部重点实验室,海洋高等研究院,中国海洋大学海洋地球科学学院,青岛266100 [3]青岛海洋科学与技术国家实验室,海洋矿产资源评价与探测技术功能实验室,青岛266237 [4]Department Geography and Geology,University of Salzburg,Salzburg A-5020

出　　处：《岩石学报》2020年第8期2357-2382,共26页Acta Petrologica Sinica

基　　金：国家自然科学基金项目(91755212、41772200);中央高校教师基金(ZY20110202);泰山学者(ts20190918);青岛市创新领军人才计划(19-3-2-19-zhc)联合资助。

摘　　要：新生代阿尔卑斯是非洲和欧洲之间的陆陆碰撞造山带。强烈的造山作用使大量前中生代基底出露地表,尽管这些基底被强烈逆冲推覆和走滑叠置,但是仍保留较丰富的前中生代基底演化信息。结合近几年对东阿尔卑斯原-古特提斯的研究,本文梳理和重建了阿尔卑斯前中生代基底的构造格局,认为前阿尔卑斯基底受原特提斯、南华力西洋、古特提斯洋构造体系影响而经历了多期造山过程。新元古代-早古生代的原阿尔卑斯作为环冈瓦纳地块群的组成部分,受原特提斯洋俯冲的制约,是新元古-早古生代环冈瓦纳活动陆缘的组成部分,其中,海尔微-彭尼内基底组成外缘增生系统,包括卡多米期地壳碎片在内的陆缘弧/岛弧以及大量增生楔组成内缘增生系统。早奥陶世瑞亚克洋打开,随后原阿尔卑斯从冈瓦纳陆缘裂离,在泥盆纪-石炭纪受南华力西洋控制,海尔微-彭尼内-中、下奥地利阿尔卑斯从冈瓦纳分离。在早石炭世(维宪期)南阿尔卑斯(或与之相当的冈瓦纳源地块)与北部阿莫里卡地块群拼贴增生于古欧洲大陆南缘,共同组成华力西造山带(广义),华力西期缝合带保留在绍山-科尔山南侧。晚石炭世-早二叠世,阿尔卑斯受古特提斯洋的俯冲影响,在华力西造山带南侧形成安第斯山型活动大陆边缘,古特提斯洋在阿尔卑斯的演化至少持续到早三叠世,消亡遗迹保留在中奥地利阿尔卑斯基底的Plankogel杂岩中。The Cenozoic Alps was stemmed from continent-continent collision between the Africa and the Europe plates.A large number of pre-Mesozoic basements are exposed because of the strong deformation of the Cenozoic orogeny.Although these basements were strongly thrust and/or sliced,the geological history of the pre-Mesozoic basement is well preserved in them.Together with our recent studies for Proto-and Paleo-Tethys in the East Alps,this paper reconstructs a brief tectonic frame of the pre-Mesozoic basements in the Alps.The pre-Alpine basements underwent multiple orogenic processes under the influences of tectonic system of the ProtoTethys,southern Rheic Ocean and Paleo-Tethys.The Proto-Alps in the Neoproterozoic-Early Paleozoic,as a part of the peri-Gondwana terrane group making up the active continental margin of the mother landmass,was controlled by the subduction of the Proto-Tethys.The Helvetic-Penninic basement,constructing the outmost accretionary system in front of the Proto-Alps,is composed of a series of Cadomian fragments including epicontinental/island arc and abundant accrentionary complexes.The Rheic Ocean opened in the Early Ordovician,then the Proto-Alps was separated and rifted from the Gondwana.From the Devonian to the Carboniferous,the Proto-Alps was controlled by the southern Variscan Ocean,which separated the Helvetic-Penninic-Middle/Lower Austroalpine from the Gondwana.In the Early Carboniferous(Visean),the South Alps(or the equivalent splitted from the Gondwana)and the northern Amorica terrane group docked together on the southern Paleo-Europe,from which the Variscan orogenic belt(senso lato)was built,i.e.,the Variscan suture in the Alps is located on the south of Sauaple-Koralpe.In the Late Carboniferous-Early Permian,the Alps was affected by the subduction of the Paleo-Tethys,forming the Andean-type active continental margin on the south wing of the Variscan orogenic belt.The Paleo-Tethys Ocean in the Alps lasted at least to the Early Triassic,and its relics remain in the Plankogel complex of

关 键 词：阿尔卑斯 原特提斯洋 古特提斯洋 冈瓦纳 卡多米 加里东 华力西 造山作用 

分 类 号：P541[天文地球—构造地质学]