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1.2. , / ........................................................................................................ 1.3. ................................................................................... 1.4. , ................................................................... 2. - ................. 2.1. - ................... 2.2. - .... 2.3. , ......................... 2.3.1. ................................................... 2.3.2. - .............. 2.3.3. .... 2.4. ................................................. 2.4.1. ............... 2.4.2. ....................................... 2.4.3. ............... 2.4.4. ............... 2.5. (?)- - .................................................................................................................. 2.5.1. - ( )............................................................................................. 2.5.2. (?)- ........... 2.6. ............ 3. -............................................................................... 3.1. .................... 3.1.1. ........ 3.1.2. ............................................. 3.1.3. ......................... 3.1.4. ........................... 3.1.5. - ............... 3.1.6. ............................................................................................

3.2. .............................. 3.2.1. ............................................... 3.2.2. .................................................................. 3.3. ........................................

.............................................. 3.4. ..... 3.4.1. ................................................................. 3.4.2. .......................................................... 3.4.3. ................... 3.4.4. ............................ 3.4.5. ........................................................................................................ 4. -.................................................................................................. 4.1. ............................ 4.2. .............. 4.3. ............... 4.4. .............. 4.5. ............................................................................ 5. ....................................... 5.1. ............................................................... 5.2. ...................................................... 5.3. ........................ 5.4. .......... 5.5. ....................................................... 5.6. .......... 5.7. .......................................................................................

5.8. ........................................................................................................... 6. .......................... 6.1. ......................... 6.2. - ............... 6.3. .................................................. 6.4. .................................................................. 6.5. , ............................. 6.6. ........................................................................................................... 7. - ........... 7.1. , .................................................................................................... 7.2. ............... 7.3. - .............. 7.4. ............ 7.5. ............... 7.6. ........... 7.7. ........... 8. ............. 8.1. - ................. 8.2. - ..................................................................................................................... 8.3. ... 8.4. ............. 8.5. .............. ......................................................................................................................

( ).............................. ................................................................................................................... ....................................................................................................................... CONTENTS Introduction ....... Chapter 1. Development of ideas on the origin of siliceous rocks and formations of folded belts ......................................................................................... 1.1. Hypotheses suggesting sources of dissolved silica as the main reason of chert origin .........................................................................................

1.2. Hypotheses suggesting specific conditions and environments in sedimentation areas as the main reason of siliceous formations origin............. 1.3. Regularities of the siliceous plankton distribution in recent oceans and in bottom sediments............................................................................................... 1.4. Application of silica depositions for regional paleogeography, tectonics and geodynamics ................................................................................................

Chapter 2. Siliceous formations of the Sikhote-Alin folded region.............................. 2.1. Tectonic divisions of the Sikhote-Alin region.................................................

2.2. Distribution of siliceous rocks in the Sikhote-Alin and adjacent areas........... 2.3. Stratigraphic sections of the Triassic deposits, their correlation and age........ 2.3.1. Central and Coastal zones....................................................................... 2.3.2. Amur-Nadankhada zone......................................................................... 2.3.3. Correlation between the sections and boundaries of the Triassic siliceous formation...........................................................................................

2.4. Structure of the Triassic siliceous formation................................................... 2.4.1. Facies distribution................................................................................... 2.4.2. Cyclic structure....................................................................................... 2.4.3. Marker horizons...................................................................................... 2.4.4. Model of the Triassic siliceous formation of the Sikhote-Alin............... 2.5. Middle?- Late Jurassic siliceous formation of the Sikhote-Alin..................... 2.5.1. Stratigraphic sections and ages of siliceous units of the southern Sikhote-Alin (Eastern zone)............................................................................. 2.5.2. Structure of the Middle?- Late Jurassic siliceous formation.................. 2.6. Geological consequences of the siliceous unit sections study........................ Chapter 3. Major lithotypes and rock composition of siliceous formations of the Sikhote-Alin......................................................................................... 3.1. Used classifications and main lithotypes......................................................... 3.1.1. Siliceous rock classification based on mineral admixture composition.... 3.1.2. Biomorphic and abiogenous siliceous rocks.......................................... 3.1.3. Textural types of Triassic and Jurassic siliceous rocks........................... 3.1.4. Structural types of Triassic and Jurassic siliceous rocks........................ 3.1.5. Lithotypes of carbonate and carbonate-siliceous rocks.......................... 3.1.6. Major and minor lithotypes and genotypes of rocks............................... 3.2. Mineral composition of Triassic and Jurassic siliceous rocks......................... 3.2.1. Components and mineral composition................................................... 3.2.2. Clay minerals in the siliceous and associated rocks............................... 3.3. Geochemistry of siliceous rocks..................................................................... 3.4. Triassic carbonaceous chert and its metallogenic significance....................... 3.4.1. Mineral composition of carbonaceous cherts......................................... 3.4.2. Composition of organic matter............................................................... 3.4.3. Geochemistry of minor elements of carbonaceous cherts...................... 3.4.4. Noble metals in carbonaceous cherts...................................................... 3.4.5. Sedimentary environments and metallogenic significance of carbonaceous cherts...................................................................................... Chapter 4. Environmental conditions and origin of Mesozoic siliceous formations of the Sikhote-Alin......................................................................................... 4.1. Olistostromes and tectonic mlange................................................................ 4.2. Palinspastic reconstruction and basin dimensions.......................................... 4.3. Absolute masses of silica and manganese accumulation................................ 4.4. Landscapes and climate on the adjacent areas................................................

4.5. Sea-level changes and their influence on sedimentation and the siliceous formations forming................................................................................................. Chapter 5. Holocene siliceous oozes of the Sea of Okhotsk.......................................... 5.1. Structure of Holocene horizon........................................................................

5.2. Physical properties of siliceous oozes............................................................. 5.3. Component and mineral compositions of Holocene oozes............................. 5.4. Clay mineral of Holocene sediments.............................................................. 5.5. Chemical composition of Holocene oozes......................................................

5.6. Rates of sedimentation and absolute masses of silica accumulation...............

5.7. Submarine slumps........................................................................................... 5.8. Conclusions..................................................................................................... Chapter 6. Quaternary siliceous oozes of the Philippine Sea....................................... 6.1. Distribution and geological setting of siliceous oozes.................................... 6.2. Lithology and petrographic description of cores, age of siliceous oozes........ 6.3. Clay mineral composition............................................................................... 6.4. Pleistocene ooze geochemistry........................................................................ 6.5. Mode of sedimentation, rates and environment condition of siliceous oozes accumulation.......................................................................................................... 6.6. Conclusions.....................................................................................................

Chapter 7. Neogene-Quaternary siliceous deposits of the Sea of Japan...................... 7.1. Earths crust, morphostructures and origin of the Sea of Japan...................... 7.2. Composition of the sedimentary cover of deep depressions........................... 7.3. Neogene-Quaternary siliceous sediments....................................................... 7.4. Carbonaceous rocks units................................................................................

7.5. Diagenesis of the Neogen-Quaternary sediments........................................... 7.6. Climatic influences on deposition and diagenesis of sediments of the Sea of Japan.................................................................................................................. 7.7. Conclusions..................................................................................................... Chapter 8. Siliceous sedimentation in other basins of the Pacific Ocean....................

8.1. Miocene-Quaternary silica accumulation in the Bering Sea...........................

8.2. Miocene-Quaternary silica accumulation in the northern Pacific...................

8.3. Holocene silica accumulation in the equatorial Pacific................................... 8.4. Holocene silica accumulation in the Gulf of California.................................. 8.5. Mesozoic silica accumulation in the Pigafetta basin....................................... Conclusion......................................................................................................................... Appendix (tables of chemical composition of rocks and minerals)................................... Plates and their explanations........................................................................................... References..........................................................................................................................

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