Super deep continental drilling and deep geophysical sounding : [selections from a series of reports delivered at the International Seminar "Super-Deep Drilling and Deep Geophysical Research", held in Yaroslawl, Soviet Union, in August 1988, organized joi

The articles in this volume were selected from a series of reports delivered in the So­ viet Union at Yaroslavl during the International Seminar "Super-deep drilling and deep geophysical research", which was organized and held in August 1988 by the Ministry of Geology of the USSR, jointly with the Inter-Union Commission on the Lithosphere. One of the most important problems of modem geology, is the state and prospects of further development of deep continental structure investigations, was discussed at the seminar with the participation of 245 scientists and specialists from 19 countries. At the plenary and sectional meetings of the seminar, 83 reports were delivered, discussions on the most interesting problems were organized, the exchange of ideas between the leading scientists a round table took place in discussion. The distinctive feature of the present collection of articles is the wide scope of the investigation of the Earth's crust. The reports elucidate such subjects of world impor­ tance as (1) achievements in implementation of major scientific programs investi­ gating deep Earth structure and plans for their further materialization; (2) theoretical problems of carrying out geological-geophysical explorations and drilling operations; and (3) new approaches to the study of the Earth's interior. The results of deep inves­ tigations of individual countries and organizations are considered, and concrete tech­ nical elaboration, methods of work execution, etc. are discussed. Front Matter....Pages I-XVI Continental Drilling: A Key Project of the International Lithosphere Program (ILP)....Pages 1-4 Problems of Deep Geology of the USSR....Pages 5-15 The Applicability of Geothermal Drilling Experience to Super-Deep Drilling....Pages 16-32 Deep Studies of the Ore-Forming Systems by Drilling....Pages 33-39 Cajon Pass Scientific Drilling Project: Drilling Overview....Pages 40-56 Scientific Deep Drilling and Geophysical Sounding: A Mutual Scientific Challenge to Understand the Processes Shaping the Earth’s Crust....Pages 57-69 The Role of Continental Scientific Drilling in Studies of Earthquakes, Crustal Deformation, and Lithospheric Dynamics....Pages 70-89 The USSR Integrated Program of Continental Crust Investigations and Studies of the Earth’s Deep Structure Under the “Globus” Project....Pages 90-103 Geodynamic Map of the USSR: A New Scientific Base for Regional and Deep Geological-Geophysical Investigations....Pages 104-110 The Results of Seismic Investigations Along Geotraverses....Pages 111-119 Structure and Tectonics in the Oberpfalz Area and Its Surroundings....Pages 120-133 Geological Structure of the Krivbass Based on Results of Super-Deep Drilling and Regional Geological-Geophysical Studies....Pages 134-140 Results of Siberian Deep Structure Investigation by Geophysical Methods....Pages 141-151 Results and Further Development of Deep Seismic Investigations in the Northern Part of the GDR....Pages 152-162 The Basite Component of Archaean Section of the Kola Super-Deep Well....Pages 163-169 The Technical Challenges and Scientific Results of the Salton Sea Scientific Drilling Project, USA: The Relevance of Geothermal Experience to Ultradeep Drilling....Pages 170-179 KTB Pilot Hole — Results and Experiences of One-Year Operation....Pages 180-190 Gas Exploration Beneath the Bavarian Alps — A Technical Challenge....Pages 191-202 Scientific Drilling Technologies for Hostile Environments....Pages 203-210 Technology of Ultradeep Core Drilling Without Pulling out Drill Pipes....Pages 211-221 Investigations on the Dynamics of Caving when Drilling Crystalline Rocks....Pages 222-230 A New High-Temperature Stable Mud Additive for Deep Drilling Operations....Pages 231-239 Drilling and Grouting Muds for Super-Deep Drilling....Pages 240-248 Long and Heavy Intermediate Casing Strings: Are They Necessary — How to Design Them....Pages 249-261 Engineering and Technological Specific Features of Super-Deep Borehole Casing....Pages 262-268 Drilling Technology of the Super-Deep Borehole Upper Parts in Sedimentary Sequences....Pages 269-272 New Strategies for Ultradeep Coring in Crystalline Bedrock....Pages 273-292 The KTB Drilling Rig — Technical Concept and Rig Layout for a Depth Capacity of 14 000 m....Pages 293-301 Material Selection and Concept for the Drill String of the Continental Deep Drilling Project, KTB....Pages 302-309 Evaluation of Hammerdrill-Potential for KTB....Pages 310-321 Deep-Hole Drilling Using Rock-Breaking Tool Set with Super-Hard Composites....Pages 322-331 Investigation of Endogenous Processes on the Cores of Super-Deep Boreholes....Pages 332-341 Scientific Drilling to Investigate the Physical and Chemical Nature of Fluids in the Earth’s Crust at 400–500 °C....Pages 342-352 A Change in Composition of Rocks, Mineral Phases and Trapped Gases in The Kola Super-Deep Borehole(SD-3) Section of the Archean Complex with Depth....Pages 353-363 Complex Study of Core and Fluid Samples from the Ural Super-Deep Well....Pages 364-371 Situ Stress Measurements in Super-Deep Wells....Pages 372-376 Deep Stress Measurements: A Key to Understanding Crustal Tectonics....Pages 377-387 Vertical Seismic Profiling (VSP) and Ultradeep Borehole Section Prediction....Pages 388-392 The Geological Nature of Seismic Boundaries in the Continental Crust....Pages 393-407 Logging Concept and First Results from the KTB Pilot Borehole....Pages 408-424 Peculiarities of Interpretation Methods of the Logs of Large-Diameter Boreholes....Pages 425-430 Back Matter....Pages 431-436

The International Seminar on Super-deep continental drilling and deep geophysical research was held at Yaroslawl/Wolga in the USSR, August 23-29, 1988. The unique feature of this international conference was the combination of reports on drilling technology, scientific interpretation of logs from boreholes with reports on geological transects and on deep geophysical sounding. The new frontier in the exploration of the lithosphere is the combination of remote sensing and imaging with deep drilling, whereby the latter provides direct access to the deeper part of the crystalline Earth's crust. Super-deep drilling into depth ranges with conditions of high pressure-temperature and high chemical reaction rates challenges the imagination and abilities of the best of engineers. Super-deep drilling is also a tremendous challenge to all geoscientists since it provides "ground truth" for a wide spectrum of remote sensing and imaging methods that can be applied to the crystalline crust. The reader will find the latest achievements about drilling into the continental crust.

Edited By K. Fuchs ... [et Al.]. Selections From A Series Of Reports Delivered At The International Seminar Super-deep Drilling And Deep Geophysical Research, Held In Yaroslavl, Soviet Union, In August 1988, Organized Jointly By The Ministry Of Geology Of The Ussr And The Inter-union Commission On The Lithosphere. Includes Bibliographical References And Index. The proceedings of a seminar on super-deep continental drilling and deep geophysical research held in USSR in August 1988. The conference focused on drilling technology, scientific interpretations of logs from boreholes with reports on geological transects and deep geophysical sounding.