Table of Contents |
EXECUTIVE SUMMARY 1. INTRODUCTION 2. GEOLOGICAL OVERVIEW 3. REGIONAL LITHOSTRATIGRAPHY 3.1. Carboniferous of Pai-Khoi, Novaya Zemlya, Cape Zhelaniya, and Taimyr 3.2. Permian of Pai-Khoi, Novaya Zemlya, Cape Zhelaniya, and Taimyr 3.3. Mesozoic of Pai-Khoi, Yamal and Taimyr 3.4. Cenozoic of Yamal and Taimyr 4. OVERVIEW OF PREVIOUS PROVENANCE STUDIES 4.1. Novaya Zemlya Archipelago 4.2. Severnaya Zemlya Archipelago 4.3. Taimyr Peninsula 5. SAMPLING STRATEGY 6. LOW-TEMPERATURE GEOCHRONOLOGY STUDY 7. U-PB GEOCHRONOLOGY OF DETRITAL ZIRCON STUDY 7.1. Early Paleozoic samples 7.2. Middle-Late Paleozoic samples 7.3. Summary of U-Pb data for Paleozoic sedimentary rocks 7.4. Mesozoic-Cenozoic samples 7.5. Summary of U-Pb data for Mesozoic-Cenozoic sedimentary rocks 8. PROVENANCE HISTORY AND PALEOGEOGRAPHY OF THE GREATER KARA REGION 8.1. Triassic 8.2. Jurassic 8.3. Cretaceous 8.4. Cenozoic 9. CONCLUSION 10. REFERENCE LIST |
Attachments |
ATTACHMENT 1. Legend for key stratigraphic sections. ATTACHMENT 2. Composite panel of Carboniferous and Permian stratigraphic key sections. ATTACHMENT 3. Composite panel of Mesozoic stratigraphic key sections. ATTACHMENT 4. Composite panel of Cenozoic stratigraphic key sections SUPPLIMENTARY FILES (MS Excel Format): U-Pb Detrital Zircon data Apatite Fission Track data AFT-HeFTy-models Zircon Fission Track data |
List of Illustrations |
FIGURE 1.1. Index map of and location of the study area in the Siberian Arctic. FIGURE 2.1. Geological map of the Greater Kara region. FIGURE 2.2. Tectono-stratigraphic chart of the Greater Kara Sea region. FIGURE 2.3. Depth-to-basement map of the Barents–Kara Shelf based on seismic reflection and refraction data and satellite altimeter gravity data. FIGURE 2.4. Regional transect 2-AR showing structure and main sedimentary successions of the Kara Shelf. FIGURE 2.5. Fragment of a MCS reflection profile showing syn-rift Ordovician (?) siliciclastic succession overlain by Ordovician (?) salt. FIGURE 2.6. Geological map and cross-section of northwestern part of the Akhmatov Bay (Bol’shevik Island) showing occurrence of post-Permian compressional deformations. FIGURE 3.1. Stratigraphic correlation chart of the Carboniferous successions of the study area. FIGURE 3.2. Stratigraphic correlation chart of the Permian successions of the study area. FIGURE 3.3. Stratigraphic correlation chart of the Mesozoic successions of the study area. FIGURE 3.4. Stratigraphic correlation chart of the Cenozoic successions of the study area. FIGURE 4.1. Simplified geological map of the Novaya Zemlya Archipelago showing location of the sampling sites. FIGURE 4.2. Relative age probability distribution plots for detrital zircon grains from Cambrian to Ordovician sandstones of Southern Island of the Novaya Zemlya Archipelago. FIGURE 4.3. Relative age probability distribution plots for detrital zircon grains from the Paleozoic successions of northern Novaya Zemlya Archipelago. FIGURE 4.4. Tectonic structure map of the Taymyr Fold Belt showing location of sampling sites. FIGURE 4.5. Relative age probability distribution plots for detrital zircon grains from Neoproterozoic to Devonian sedimentary successions of Severnaya Zemlya Archipelago. FIGURE 4.6. Relative age probability distribution plots for detrital zircon grains from Cambrian samples of the Taimyr Peninsula. FIGURE 4.7. Relative age probability distribution plots for detrital zircon grains from Permian-Carboniferous and Cretaceous sandstones of the Taimyr Peninsula. FIGURE 5.1. Geological map of the Greater Kara region showing location of sampling sites for the U-Pb detrital zircon geochronology study. FIGURE 5.2. Geological map of the Greater Kara region showing location of sampling sites for the Apatite and Zircon fission track studies (AFT and ZFT). FIGURE 6.1. AFT-based thermal evolution (HeFTy models) for samples from Novaya Zemlya Archipelago. FIGURE 6.2. AFT-based thermal evolution (HeFTy models) of samples from Kara Shelf. FIGURE 6.3. AFT-based thermal evolution (HeFTy models) of samples from the Taimyr Fold Belt. FIGURE 6.4. Distribution of the AFT ages within the study area. FIGURE 6.5. Distribution of ZFT ages within the study area. FIGURE 7.1. Cumulative probability diagram for early Paleozoic samples. FIGURE 7.2. Geological map of the Greater Kara region showing location and relative age probability distribution plots for detrital zircons from early Paleozoic samples. FIGURE 7.3. Geological map of the Greater Kara region showing location and relative age probability distribution plots for detrital zircons from the middle-late Paleozoic samples. FIGURE 7.4. Cumulative probability diagram for all studied Mesozoic-Cenozoic samples. FIGURE 7.5. Geological map of the Greater Kara region showing location and relative age probability distribution plots for detrital zircons from the Triassic-Middle Jurassic samples. FIGURE 7.6. Geological map of the Greater Kara region showing location and relative age probability distribution plots for detrital zircons from the Upper Jurassic-Cenozoic samples. FIGURE 7.7. Inferred direction of the clastic supply based on the detrital zircon ages. FIGURE 8.1. Paleogeographic map of the Greater Kara region for Induan time. FIGURE 8.2. Paleogeographic map of the Greater Kara region for Hettangian-Sinemurian time. FIGURE 8.3. Paleogeographic map of the Greater Kara region for Bajocian – Bathonian time. FIGURE 8.4. Paleogeographic map of the Greater Kara region for Kimmeridgian – Volgian time. FIGURE 8.5. Paleogeographic map of the Greater Kara region for Valanginian-Hauterivian time. FIGURE 8.6. Paleogeographic map of the Greater Kara region for Albian time. FIGURE 8.7. The north-south seaway system between Tethys and Arctic in Paleogene. FIGURE 8.8. Bartonian-Priabonian semi-closed marine basin in West-Siberia |