Early Carboniferous) Examensarbete Vid Institutionen För Geovetenskaper

The Tournaisian (Early Carboniferous) Examensarbete vid Institutionen för geovetenskaper

Foraminifers From the Kuznetsk Basin ISSN 1650-6553 Nr 303 (South-West Siberia, Russia): Taxonomy, Biometry, Biostratigraphy

Clémentine Colpaert The Tournaisian (Early Carboniferous)

Foraminifers From the Kuznetsk Basin Revised Tournaisian foraminiferal assemblages of Kuznetsk Basin (Siberia, Russia) provide new accurate stratigraphic correlations for the Taidon and (South-West Siberia, Russia): Fominskoe formations, and palaeobiogeographic hypotheses for western Siberia. Microfacies analyses of Old Belovo Quarry, Artyshta village Section as well as Taxonomy, Biometry, Biostratigraphy Starobachaty village Section reveal four main types of wackestone or packstone with different skeletal grains, some foraminifers and very rare incertae sedis algae. The environments of deposit may be reconstructed as located in distal parts of inner ramps and proximal parts of mid ramp. If the unilocular foraminifer are relatively abundant in all the microfacies, the plurilocular ones occur only in bioclastic neomicrosparitized wackestone deposited in the shallower parts of the carbonate ramp. As the Tournaisian inner ramp is narrow, and only preserved in the Old Belovo Quarry, the Taidon and Fominskoe formations yield quite rare plurilocular Clémentine Colpaert foraminifers. They belong mainly to the superfamily Septabrunsiinoidea, and more precisely to the genera Septabrunsiina and Pseudoplanoendothyra. Rarer Granuliferella and Endothyra are sporadically present. The presence of Granuliferella and some “Devonian” Lazarus-genera allow to correlate the Taidon Formation with the MFZ3 to MFZ5 biozones defined in the Belgian stratotypes, and its top, with Endothyra, to the biozones MFZ5 and/or MFZ6. The Fominskoe Formation, overlain by series previously dated as earliest Viséan, corresponds to the whole late Tournaisian (MFZ6-MFZ8). The previously obtained data and our new analyses of foraminiferal faunas presented herein support the hypothesis that two migrations occur between Siberia and Palaeotethys ocean from latest Famennian to late Tournaisian. The first radiation event, during the Hastarian (= early Tournaisian) might be responsible for migration of Septabrunsiina species which are probably opportunistic and endofaunal organisms. The second radiation event occurs during the early Ivorian (= earliest Tournaisian). It should be responsible of the dispersion of more diversified forminifers such as Granuliferella, Pseudoplanoendothyra and Endothyra. The presence of many similarities between the Chinese and Siberian foraminiferal assemblages suggest that the migration occurred probably through the Chinese islands due to the global transgression of the sea level at the end of the Tournaisian as well as the occurrence of several tropical carbonate platforms. As the Lower Carboniferous is characterised by the occurrence of freely interconnected tropical and equatorial seas favourable for the development of foraminifers, the different sea level changes have mainly controlled the evolution of foraminiferal populations, their scattering following by isolation of population, endemism and finally, gathering. They have influenced the relations between Siberia and other terranes such as those of the Palaeotethys ocean or North-America areas.

Uppsala universitet, Institutionen för geovetenskaper Examensarbete E1, 30 hp i Paleobiologi ISSN 1650-6553 Nr 303 Tryckt hos Institutionen för geovetenskaper, Geotryckeriet, Uppsala universitet, Uppsala, 2014. Examensarbete vid Institutionen för geovetenskaper ISSN 1650-6553 Nr 303

The Tournaisian (Early Carboniferous) Foraminifers From the Kuznetsk Basin (South-West Siberia, Russia): Taxonomy, Biometry, Biostratigraphy

Clémentine Colpaert

Supervisors: Daniel Vachard, Irina Timokhina, Olga Obut, Claude Monnet

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-2,4 -1,6 -0,8 0,0 0,8 1,6 2,4 3,2 4,0 F B Component Component 1 Figure 11 : Principal components analyses of A) Old Belovo Quarry. B) Artyshta village Section. C) Starobachaty village Section, performed with PAST software (http://folk.uio.no/ohammer/past/). 1. Principal components analysis biplot 2. PCA loadings 3. Scree plots. ( F. Facies; C. Crinoid; F.u. Unilocular foraminifer; Bi. Bivalve; O. Ostracod; G. Gastropod; S. Spirorbid; Br. Brachiopod; F.p. Plurilocular foraminifer; Bri. Bryozoan; A. Microproblematical algae).

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22 Tidigare utgivna publikationer i serien ISSN 1650-6553

Nr 1 Geomorphological mapping and hazard assessment of alpine areas in Vorarlberg, Austria, Marcus Gustavsson

Nr 2 Verification of the Turbulence Index used at SMHI, Stefan Bergman

Nr 3 Forecasting the next day’s maximum and minimum temperature in Vancouver, Canada by using artificial neural network models, Magnus Nilsson

Nr 4 The tectonic history of the Skyttorp-Vattholma fault zone, south-central Sweden, Anna Victoria Engström

Nr 5 Investigation on Surface energy fluxes and their relationship to synoptic weather patterns on Storglaciären, northern Sweden, Yvonne Kramer Nr 293 Kan den hydrologiska modellen S-HYPE användas för att beräkna grundvattennivåer med tillräcklig noggrannhet?,Hanna Lagergren, September 2014

Nr 294 One- and Three-dimensional P- and S-wave Velocity Models of Central and Southern Sweden Based on SNSN Data ,Ne Xun Chan, September 2014

Nr 295 Tooth Replacement of Euhelopus zdanskyi (Dinosauria: Sauropoda) and the Evolution of Titanosaurian Tooth Morphology,Seela Salakka, September 2014

Nr 296 Processing and Modeling of Gravity, Magnetic and Electromagnetic Data in the Falkenberg Area, Sweden,Soroor Mohammadi, September 2014

Nr 297 Calving Front Dynamics: External Forces that Lead to Specific Sized Calving Events,Daniel Wainwright, September 2014

Nr 298 Atmospheric Mercury Deposition in Alpine Snow, Northern British Columbia and Southwestern Yukon, Canada,Pia Karlsson, September 2014

Nr 299 Mobilization and Transport of Different Types of Carbon-based Engineered and Natural Nanoparticles through Saturated Porous Media,Maryeh Hedayati, Oktober 2014

Nr 300 Surface Climatology of the Icefield Ranges, St. Elias Mountains, Yukon Territory, Canada,Justinas Baltrenas, Oktober 2014

Nr 301 Fish/tetrapod Communities in the Upper Devonian,Maxime Delgehier, Oktober 2014

Nr 302 Characterising the magma supply system of Agung and Batur Volcanoes on Bali, Indonesia,Harri Geiger, Oktober 2014