Stratigraphic Definition and Correlation of Middle Triassic Volcaniclastic Facies in the External Dinarides： Croatia and Bosnia and Herzegovina  

作　　者：Duje Smircic Tea Kolar-Jurkovsek Dunja Aljinovic Uros Barudzija Bogdan Jurkovsek Hazim Hrvatovic 

机构地区：[1]University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering, Pierottijeva 6, Zagreb 10000, Croatia [2]Geological Survey of Slovenia, Dimiceva Ulica 14, Ljubljana 1000, Slovenia [3]Geological Survey of Federation of Bosnia and Herzegovina, Ilidza, Ustanicka 11, Sarajevo, Bosnia and Herzegovina

出　　处：《Journal of Earth Science》2018年第4期864-878,共15页地球科学学刊（英文版）

基　　金：financed by the Croatian Ministry of Science and Education;University of Zagreb financial support founds

摘　　要：Middle Triassic volcaniclastic depositsin the External Dinarides of Croatia and Bosnia and Herzegovina are related to the rifting of the Tethyan Ocean. Three localities in the External Dinarides： Donje Pazariste, Bosansko Grahovo and Zelovo were biostratigraphically analysed in this study. The Middle Triassic carbonate deposits with volcaniclastic interlayers in Donje Pazariste were defined by means of conodonts. Rare ammonoid specimens were collected.Recovered conodont and ammonoid taxa suggest these sections are of Early Illyrian to Early Fassanian Age. The section studied in Bosansko Grahovo is dominantly composed of volcanic and volcaniclastic rocks. Limestone peperites were collected for conodont analysis. Two conodont zones were defined, suggesting volcanic activity in the same, from Lower Illyrian to Fassanian, time interval. The Zelovo Section was biostratigraphically investigated by several authors. The pietra verde deposits from Zelovo are referred as late Fassanian to Early Longobardian Age. Biostratigraphic correlation from mentioned three localities imply that the magmatic activity in the External Dinarides, and formation of different volcaniclastic facies lasted from Illyrian to Longobardian, similar as in the surrounding western Tethyan territories.Middle Triassic volcaniclastic depositsin the External Dinarides of Croatia and Bosnia and Herzegovina are related to the rifting of the Tethyan Ocean. Three localities in the External Dinarides： Donje Pazariste, Bosansko Grahovo and Zelovo were biostratigraphically analysed in this study. The Middle Triassic carbonate deposits with volcaniclastic interlayers in Donje Pazariste were defined by means of conodonts. Rare ammonoid specimens were collected.Recovered conodont and ammonoid taxa suggest these sections are of Early Illyrian to Early Fassanian Age. The section studied in Bosansko Grahovo is dominantly composed of volcanic and volcaniclastic rocks. Limestone peperites were collected for conodont analysis. Two conodont zones were defined, suggesting volcanic activity in the same, from Lower Illyrian to Fassanian, time interval. The Zelovo Section was biostratigraphically investigated by several authors. The pietra verde deposits from Zelovo are referred as late Fassanian to Early Longobardian Age. Biostratigraphic correlation from mentioned three localities imply that the magmatic activity in the External Dinarides, and formation of different volcaniclastic facies lasted from Illyrian to Longobardian, similar as in the surrounding western Tethyan territories.

关 键 词：External Dinarides BIOSTRATIGRAPHY Middle Triassic volcaniclastic deposits western Tethys. 

分 类 号：P534.51[天文地球—古生物学与地层学] TN927.2[天文地球—地质学]