Dataset

COSC-1 operational report - Operational data sets

Lorenz, Henning; Rosberg, Jan-Erik; Juhlin, Christopher; Bjelm, Leif; Almqvist, Bjarne; Berthet, Théo; Conze, Ronald; Gee, David G.; Klonowska, Iwona; Pascal, Christophe; Pedersen, Karsten; Roberts, Nick; Tsang, Chinfu;

2015 || GFZ Data Services

The Collisional Orogeny in the Scandinavian Caledonides (COSC) scientific drilling project focuses on mountain building processes in a major mid-Paleozoic orogen in western Scandinavia and its comparison with modern analogues. The transport and emplacement of subduction-related highgrade continent-ocean transition (COT) complexes onto the Baltoscandian platform and their influence on the underlying allochthons and basement will be studied in a section provided by two fully cored 2.5 km deep drill holes. This operational report concerns the first drill hole, COSC-1 (ICDP 5054-1-A), drilled from early May to late August 2014.COSC-1 is located in the vicinity of the abandoned Fröå mine, close to the town of Åre in Jämtland, Sweden and was planned to sample a thick section of the Seve Nappe and to penetrate its basal thrust zone into the underlying lower grade metamorphosed allochthon. Despite substantial technical problems, the drill hole reached 2495.8 m driller's depth and nearly 100 % core recovery was achieved. Surprising was the homogeneity of the Seve Nappe rocks, the unexpected thickness of its basal thrust zone (> 500 m) and that the drill hole, therefore, did not penetrate the bottom of the thrust zone. However, lower grade metasedimentary rocks were encountered in the lowermost part of the drill hole together with tens of metres thick mylonites that are, unexpectedly, rich in large garnets.The drill core was documented on-site and XRF scanned off site. During various stages of the drilling, the borehole was documented by comprehensive downhole logging. This operational report provides an overview over the COSC-1 operations from drilling preparations to the sampling party and describes the available datasets and sample material.

Originally assigned keywords

Corresponding MSL vocabulary keywords

MSL enriched keywords

MSL enriched sub domains	geochemistry
Source	http://dx.doi.org/10.1594/gfz.sddb.icdp.5054.2015
Source publisher	GFZ Data Services
DOI	10.1594/gfz.sddb.icdp.5054.2015
Authors	Lorenz, Henning Uppsala University, Department of Earth Sciences, Geophysics; Rosberg, Jan-Erik Lund University, Engineering Geology; Juhlin, Christopher Uppsala University, Department of Earth Sciences, Geophysics; Bjelm, Leif Lund University, Engineering Geology; Almqvist, Bjarne Uppsala University, Department of Earth Sciences, Geophysics; Berthet, Théo Uppsala University, Department of Earth Sciences, Geophysics; Conze, Ronald 0000-0002-8209-6290 GFZ German Research Centre for Geosciences, Scientific Drilling ICDP; Gee, David G. Uppsala University, Department of Earth Sciences, Geophysics; Klonowska, Iwona Uppsala University, Department of Earth Sciences, Geophysics; Pascal, Christophe University of Bochum, Institute of Geology, Mineralogy and Geophysics; Pedersen, Karsten Chalmers University of Technology, Division of GeoEngineering; Roberts, Nick British Geological Survey; Tsang, Chinfu Lawrence Berkeley National Laboratory, Earth Sciences Division;
Contributors	Lorenz, Henning ContactPerson Uppsala University, Department of Earth Sciences, Geophysics; Rosberg, Jan-Erik DataCollector Lund University, Engineering Geology; Juhlin, Christopher ProjectLeader Uppsala University, Department of Earth Sciences, Geophysics; Bjelm, Leif ProjectLeader Lund University, Engineering Geology; Almqvist, Bjarne DataCollector Uppsala University, Department of Earth Sciences, Geophysics; Berthet, Théo DataCollector Uppsala University, Department of Earth Sciences, Geophysics; Conze, Ronald DataManager 0000-0002-8209-6290 GFZ German Research Centre for Geosciences, Scientific Drilling ICDP; Gee, David G. DataCollector Uppsala University, Department of Earth Sciences, Geophysics; Klonowska, Iwona DataCollector Uppsala University, Department of Earth Sciences, Geophysics; Pascal, Christophe ProjectLeader University of Bochum, Institute of Geology, Mineralogy and Geophysics; Pedersen, Karsten ProjectLeader Chalmers University of Technology, Division of GeoEngineering; Roberts, Nick DataCollector British Geological Survey; Tsang, Chinfu DataCollector Lawrence Berkeley National Laboratory, Earth Sciences Division;
References	Lorenz, H., Rosberg, J.-E., Juhlin, C., Bjelm, L., Almqvist, B. S. G., Berthet, T., Conze, R., Gee, D. G., Klonowska, I., Pascal, C., Pedersen, K., Roberts, N. M. W., & Tsang, C.-F. (2015). COSC-1 – drilling of a subduction-related allochthon in the Palaeozoic Caledonide orogen of Scandinavia. Scientific Drilling, 19, 1–11. https://doi.org/10.5194/sd-19-1-2015 10.5194/sd-19-1-2015 IsSupplementTo References References References Lorenz, H., Rosberg, J. E., Juhlin, C., Bjelm, L., Almquist, B., Berthet, T., Conze, R., Gee, D., Klonowska, I., Pascal, C., Pedersen, K., Roberts, N., & Tsang, C. F. (2015). COSC-1 operational report Explanatory remarks on the operational data sets. Deutsches GeoForschungsZentrum GFZ. https://doi.org/10.2312/ICDP.2015.001 10.2312/ICDP.2015.001 IsDocumentedBy Lorenz, H., Rosberg, J. E., Juhlin, C., Bjelm, L., Almquist, B., Berthet, T., Conze, R., Gee, D., Klonowska, I., Pascal, C., Pedersen, K., Roberts, N., & Tsang, C. F. (2015). Operational report about phase 1 of the collisional orogeny in the scandinavian caledonides scientific drilling project (COSC-1). ICDP Data Set Report; https://doi.org/10.2312/ICDP.2015.002 10.2312/ICDP.2015.002 IsReferencedBy Hierold, J., Körting, F., Kollaske, T., Rogass, C., & Harms, U. (2016). Analysis of element behavior in mylonites of the Seve Nappe of the Scandinavian Caledonides using different core scanning methods (Datasets) [Data set]. GFZ Data Services. https://doi.org/10.5880/ICDP.5054.001 10.5880/ICDP.5054.001 IsCitedBy Conze, R., Lorenz, H., Ulbricht, D., Elger, K., & Gorgas, T. (2017). Utilizing the International Geo Sample Number Concept in Continental Scientific Drilling During ICDP Expedition COSC-1. Data Science Journal, 16. https://doi.org/10.5334/dsj-2017-002 10.5334/dsj-2017-002 IsCitedBy Lorenz, H., Rosberg, J.-E., Juhlin, C., Bjelm, L., Almqvist, B., Berthet, T., Conze, R., Gee, D. G., Klonowska, I., Pascal, C., Pedersen, K., Roberts, N., & Tsang, C. (2019). COSC-1 operational report - Operational data sets (V. 1.2) [Data set]. GFZ Data Services. https://doi.org/10.5880/ICDP.5054.002 10.5880/ICDP.5054.002 IsPreviousVersionOf
Contact	Tsang, Chinfu Lawrence Berkeley National Laboratory, Earth Sciences Division;
Citation	Lorenz, H., Rosberg, J.-E., Juhlin, C., Bjelm, L., Almqvist, B., Berthet, T., Conze, R., Gee, D. G., Klonowska, I., Pascal, C., Pedersen, K., Roberts, N., & Tsang, C. (2015). COSC-1 operational report - Operational data sets [Data set]. GFZ Data Services. https://doi.org/10.1594/GFZ.SDDB.ICDP.5054.2015
Collection period(s)	2013-09-05 - 2014-10-11
Geo location(s)	Åre, Jämtlands län, Sweden