EXPLORATION OPTHE DEEP CONTINENTAL CRUST Edited by H.-J. Behr, G6ttingen C. B. Raleigh, Palisades Advisory Board R. N. Anderson, Lamont K. Fuchs, Karlsruhe W. S. Fyfe, London (Canada) H. Rischmiiller, Hannover W. Schreyer, Bochum M. Zoback, Stanford Observation of the Continental Crust through Drilling II Proceedings of the International Symposium held in Seeheim, October 3-6, 1985 Edited by H.-I Behr, F.G. Stehli, and H. Vidal With 90 Figures Springer-Verlag Berlin Heidelberg New York London Paris Tokyo Professor Dr. HANs-JuRGEN BEHR Institut fur Dynamik der Lithosphare Universitat G6ttingen Go1dschmidtstr. 3 3400 G6ttingen, FRG Professor Dr. FRANCIS G. STEHLI Dosecc Inc. Science Advisory Committee 7711 SW 103rd Avenue Gainesville, FL 32608, USA Professor Dr. HELMUT VIDAL Germeringer StraBe 5 8035 Gauting 1, FRG ISBN-13: 978-3-642-45618-3 e-ISBN-13: 978-3-642-45616-9 DOl: 10.1007/978-3-642-45616-9 Library of Congress Cataloging-in-Publication Data. Observation of the continental crust through drilling II. (Exploration of the deep continental crust) Proceedings of the 2nd International Symposium on Observation of the Continental Crust through Drilling. 1. Earth-Crust-Congresses. 2. Boring-Congresses. I. Behr, H.J. (Hans-Jurgen) II. Vidal, H. (Helmut), 1919-. III. International Symposium on Observation of the Continental Crust through Drilling (2nd: 1985 : Seeheim-Jugenheim, Germany) QE511.0282 1987 551.'3 87-14675 This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, re-use of illustrations, recitation, broadcasting, reproduction on microfilms or in other ways, and storage in data banks. Duplication of this publication or parts thereof is only permitted under the provi sions of the German Copyright Law of September 9, 1965, in its version of June 24, 1985, and a copyright fee must always be paid. Violations fall under the prosecution act of the German Copyright Law. © Springer-Verlag Berlin Heidelberg 1987 Softcover reprint of the hardcover I st edition 1987 The use of registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. Bookbinding: J. Schaffer GmbH & Co. KG., Grunstadt 213113130-543210 Preface The Second International Symposium on Observation of the Continental Crust Through Drilling (supported by the Alfred Wegener Foundation, the Federal Ministry of Research and Technology, the German Research Society and the Inter-Union Commission on the Lithosphere) took place in Seeheim (Odenwald) and included a discussion on the Continental Deep Drilling Programme of the Federal Republic of Germany. This sym posium was regarded as the continuation of a course agreed upon in Tarrytown in 1984. Here, the scientific contents and technical con cepts of the technically complex and expensive experiments of conti nental drillings were carefully coordinated before the national commit tees carne to practical decisions. In Seeheim, rather than in Tarrytown, the methods of technical realization were in the foreground, as the results of scientific projects, e.g., the NAGRA or the Salton Sea Scien· tific Drilling Project, were evaluated, supplementing industrial ultra deep drilling experience. The presentation and discussion of the Con tinental Deep Drilling Project of the Federal Republic of Germany was also granted ample scope with nine lectures and sixty posters. The con tents of the KTB presentation have been summed up in two contributions and included in this volume. The conference centered on three major subjects: The National- Prograrrunes and Aspects of Geoscience: H. Vidal, FRG; H. Riesen huber, FRG; E. Seibold, FRG; K. Fuchs, FRG; Cl. Megnien, F; R.S. An drews, USA; F.G. Stehli, USA; E.A. Kozlovsky, USSR; E.V. Karus, USSR; A.S. Batchelor, GB; R.D. Hatcher JR, USA; J.K. Costain, USA; R.T. Wil liams, USA; R.A. Phinney, USA; M.D. Zoback; R.N. Anderson, USA; J.B. Diebold, USA; L. Glover III, USA; J.M. Hall, Canada; J. Bouckaert, B; E.R. Oxburgh, GB; Cuney, F; A. Whittaker, GB; M. Suk, CSSR; P.O. Rabi nowitz, CSSR; J. Aubouin, F; R.A. Price, Canada; D.H. Matthews, GB; St. Muller, CHi M.A. Etheridge, Australia The German Continental- feep fJr>i Uing Prograrrune (KTB): R. Emmermann; H. J. Behr, K. Fuchs, P. Giese, E. Althaus, K. v. Gehlen, Working Group Schwarz wald, Working Group Oberpfalz, KTB Working Groups fJr>iUing, Logging al1.d SampUng: C. Marx, H. Rischmuller, M. Walton, H. Sparker, K. Hadley, M. Salisbury, R.K. Trager, A. Bottai, W. Elders, A. Nold, P. Diebold, T. Lindbo, F.S. Fyfe About 200 persons from 16 nations took part in the symposium. The symposium ended in a two-day excursion into the two target areas to be decided on, the Schwarzwald and the Oberpfalz. Those groups actively participating in projects, realizing the necessi ty of even closer cooperation in the fields of science, technology and organization, strove to make the second symposium a fruitful chance for cooperation, which is manifested in its results. The German Research Society and the Alfred Wegener Foundation were in charge of the preparation and organization of the symposium, which was supported by the Federal Ministry of Research and Technology. Active participation of all colleagues in the Continental Deep Drilling Programme, by taking part in organizing the symposium as well as in sometimes controversial discussions clearly showed the intense in terest in this large-scale geoscientific project of the Federal Repub lic of Germany. H.J. Behr Contents Opening Remarks .Welcoming at the "2nd International Symposium on Observation of the Continental Crust through Drilling" on October 4, 1985, in Seeheim E. Seibold .....................•...•........•.........•........ 3 Opening Speech of the 2nd International Symposium on Observation of the Continental Crust through Drilling, Seeheim, October 4th, 1985 W. Menden .•....•........•••.......................•............ 6 Seeheim-Symposium, 4-6 October, 1985. Greetings of the Chairman H. Vidal ............••..•....•....................•.•.......... 8 General Aspects Continental Deep Drilling: Challenge and Chances for Geosciences W.S. Fyfe (With 2 Figures) ..................................... 13 The Ocean Drilling Program P.D. Rabinowitz (With 2 Figures) 20 Review of National Drilling Programs The United States Continental Scientific Drilling Program F.G. Stehli and R.S. Andrews (With 2 Figures) .................. 37 The Southern Appalachian Ultradeep Scientific Drill Hole: Progress of Site Location Investigations and Other Recent Developments R.T. Williams et al. (With 5 Figures) .••........•.............. 44 The NAGRA Deep Drilling Program in Northern Switzerland. Overview of Drilling Technique A.L. Nold (With 4 Figures) ..................................... 56 Recent Developments in Scientific Deep Drilling in the United Kingdom A. Whittaker .................................•..•.............. 64 Deep Reflections and Deep Drilling D.H. Matthews (With 3 Figures) ................................• 73 Some Results of Geophysical and Drilling Investigations into Upper Lithospere in Czechoslovakia M. Suk (With 2 Figures) ........................................ 77 VIII Continental Drilling. Some· Remarks V. Zo ubek ..•..••.....••.•.•..•.......•.........•..•......•...... 81 Scientific Objectives and Site-Selection Studies of the Continental Deep Drilling Program of the Federal Republic of Germany (KTB) H.J. Behr and R. Ernrnermann (With 16 Figures) ............•....... 85 Geophysical Targets of the Continental Deep Drilling Program of the Federal Republic of Germany. Tomography of the Crust and its Permeability. A Window into the Lower Crust and an In- Vivo Deep Laboratory K. Fuchs and P. Giese .•.........••...••....•.........•.......... 120 Deep DriZZing and Logging TechnoZogy Technical Aspects of the "German Continental Deep Drilling Program" H. Rischmliller (With 3 Figures) 131 Technical Concept and Status of Planning for the Wells of the Continental Deep Drilling Program (KTB) H. Rischmliller and C. Chur (With 7 Figures) ..................... 136 Drilling and Coring Techniques for Hard Rock C. Marx and H. Rischmliller (With 8 Figures) 149 Core Drilling Technology for Ultradeep Scientific Holes M. Walton (With 2 Figures) ...........•.......................... 160 Thoughts on Problems and Possible Solutions in Ultra Deep Drilling H.F. Spoerker (With 11 Figures) 170 Ultradeep Drilling in the U.S. K.H. Hadley (With 6 Figures) •...........•...................•... 184 Technologies for Scientific Drilling and Borehole Research R.K. Traeger (With 12 Figures) ........•...................•....• 191 Deep-Well Formation Logging - The Problems. The Logging Tools C. Boyeldieu and J. Draxler (With 9 Figures) ..........•......... 207 Drilling, Logging and Sampling Problems in the ENEL Geothermal Wells A. Bottai and U. Cigni .......•......................•....•...... 224 List of Contributors You will find the addresses at the beginning of the respective contributions Anderson, R.N. 44 Marx, C. 149 Andrews, R.S. 37 Matthews, D.H. 73 Menden, W. 6 Behr, H. J . 85 Bottai, A. 224 Nold, A.L. 56 Boyeldieu, C. 207 Phinney, R.A. 44 Chur, C. 136 Rabinowitz, P.D. 20 Cigni, U. 224 Rischmliller, H. 131,136,149 Coruh, C. 44 Costain, J.K. 44 Seibold, E. 3 Spoerker, H.F. 170 Diebold, J.B. 44 Stehli, F.G. 37 Draxler, J. 207 Suk, M. 77 Emrnermann, R. 85 Traeger, R.K. 191 Fuchs, K. 120 Vidal, H. 8 Fyfe, W.S. 13 Walton, M. 160 Giese, P. 120 Whittaker, A. 64 Williams, R.T. 44 Hadley, K.H. 184 Hatcher, R.D., Jr. 44 Zoback, M.D. 44 Zoubek, V. 81 OPENING REMARKS Welcoming at the "2nd International Symposium on Observation of the continental Crust through Drilling" on October 4, 1985, in Seeheim Eugen Seibold Prof. Dr. E. Seibold, Geologisches Institut der Universitat, Albert str. 23B, D-7800 Freiburg You are an international group of prominent earth scientists interested in the deep structures of our Earth's crust. To address you in English on behalf of a German institution, the Deutsche Forschungsgemeinschaft (DFG), is therefore both an honour and a challenge. As an introductory remark in German I found only one relevant quotation. It comes from a poet who lived some 200 years ago. Novalis (1772 - 1801) wrote: "Der ist der Herr der Erde, der ihre Tiefen miBt." ("To become master of the earth you have to measure its depths.") This naturally illustrates - even two centuries ago - the importance of geophysicists during our symposium. But why and where they should investigate these depths and what their measurements mean, they normally have to ask geologists and I wish to include mineralogists, petrologists and geochemists under this umbrella - in spite of the fact that they are mostly separated carefully in German earth science departments. Geologists need "mente et malleo", i.e., ideas of and rocks from these depths. Of course they can find some of them on the surface of old shields or young mountains, but they have been altered there and are not suitable for many relevant measurements. Therefore, all earth scientists need drillers to open these depths for direct measurements, to produce a crust lab in the inner space as a brother of different outer space labs, and, additionally, to bring fresh rocks, fluids and gases to our surface laboratories. Having these objectives including fluids in mind my second quotation cannot be misunderstood: "Solidum petit in profundis." This obviously is the other international language, Latin, and means: "In the depth" you have to look for solid knowledge, an inscription in the coat of arms of the Danish Arhus University. To look into the depth is to look to the base, to basic science, too. We are grateful that strengthening basic science will be considered to possibly form also a part of the EUREKA program. To study the European Earth's crust and the processes therein may not have a quick payoff as perhaps industrial or marketing efforts but this study may be very important for a longer period of time. There is no time now to look into depth to illustrate the history of the German deep drilling plans and the role of the Deutsche Forschungsgemeinschaft therein. These plans originated in the Geocommission of our Senate in 1977. It may be interesting that these ideas were influenced by the Deep Sea Drilling Project from the beginning. Our earth scientists were fascinated by the