Publikationen


2016

  • Mohammed, M.H., Pusch, R., Knutsson, S. & Warr, L.N. (2016): Hydrothermal alteration of clay and low pH concrete applicable to deep borehole disposal of high-level radioactive waste - a pilot study. Construction & Building Materials, 401, 1-8.
  • Warr, L.N., van der Pluijm, B.A., Hofmann, H. (2016): Constraining the alteration history of a Late Cretaceous Patagonian volcaniclastic bentonite-ash-mudstone sequence using 40K/40Ar and 40Ar/39Ar isotopes. International Journal of Earth Sciences. doi: 10.​1007/​s00531-016-1315-2.

2015

  • Mohammed, M.H., Pusch, R., Warr, L.N., Kasbohm, J. & Knutsson, S. (2015): Interaction of clay and concrete relevant to the deep disposal of high-level radioactive waste. Applied Clay Science. Applied Clay Science, 118, 178–187.
  • Schlosser, J., Grathoff, G.H., Ostertag-Henning, C., Kaufhold, S. & Warr, L.N. (2015): Mineralogical changes in organic-rich Posidonia Shale during burial and experimental maturation. International Journal of Coal Petrology, 157, 74-83.
  • Baldermann, A., Warr, L.N., Lefofsky-Papst, I. & Mavromatis, V. (2015): Substantial iron sequestration during green-clay authigensis in modern deep-sea sediments. Nature-Geoscience,DOI: 10.1038/NGEO2542.
  • Boles, A., van der Pluijm, B.A., Mulch, A., Mutlu, H., Tonguc, U. & Warr, L.N. (2015): Hydrogen and 40Ar/39Ar isotope evidence for multiple and protracted paleofluid flow events within the long-lived North Anatolian Keirogen (Turkey). Geochemistry, Geophysics, Geosystems (G-cubed). Wiley. DOI: 10.1002/2015GC005810.
  • Dietel J., Steudel A, Warr, L.N. & Emmerich, K. (2015): Crystal chemistry of Na-rich rectorite from North Little Rock, Arkansas. Clay Minerals, 50, 297–306.
  • Warr, L.N. & Mählmann,R.F. (2015): Recommendations for Kübler Index standardization. Clay Minerals, 50, 283–286.

2014

  • Warr, L.N., Wojatschke, J., Carpenter, B.M., Marone, C. Schleicher, A.M., van der Pluijm, B.A. (2014): A " slice -and- view " (FIB-SEM) study of clay gouge from the SAFOD creeping section of the San Andreas Fault at ~2.7 km depth. Journal of Structural Geology, 69, 234-244.
  • Kaufhold, S., Reese, A., Schwiebacher, W., Dohrmann, R.a, Grathoff, G., Warr, L.N., Halisch, M., Müller, C., Schwarz-Schampera, U. & Ufer, K. (2014): Porosity and distribution of water in perlite from the island of Milos, Greece. SpringerPlus. 3(1):598. DOI: 10.1186/2193-1801-3-598.
  • Pusch, R., Warr, L.N., Grathoff, G., Purbakhtiar, A., Knutsson, S. & Ramqvist, G. (2014): A study on cement-poor concrete with talc for borehole sealing in rock hosting radioactive waste. Comunicações Geológicas, 100, 1, 89-98.

2013

  • Nickel, C., Baldermann, A., Dietzel, M. & Grathoff, G. & Warr, L.N. (2013). Alteration at bentonite-cement interfaces - an experimental approach. Goldschmidt Conference 2013, Florence, Italy. Poster abstract.
  • Warr, L.N., Friese, A., Schwarz, F., Schauer, F., Portier, R.J. & Basirico, L.M.. (2013): Bioremediating oil spills in nutrient poor ocean waters using fertilized clay mineral flakes: some experimental contraints. Biotechnical Research International, 2013, Article ID 704806, 9 pages.
  • Baldermann, A., Warr, L.N., Grathoff, G. & Dietzel, M. (2013): The rate and mechanism of deep sea glauconite formation at the Ivory coast-Ghana marginal ridge.Clays and Clay Minerals, 61, 258-276.
  • Pusch, R., Warr, L.N., Grathoff, G., Pourbakhtiar, A., Knutsson, S. & Mohammed, M.H. (2013): A talc-based cement-poor concrete for sealing boreholes in rock. Engineering, 5, 251-267. PDF copy.

2012

  • Dietel, J., Emmerich, K., Grathoff, G.H. & Warr, L.N. (2012): Dehydroxylated illite/smectite as a precursor for geopolymer binders. Poster abstract. 6th Mid-European Clay Conference, Sept. 4-9, 2012 in Pruhonice, Czech Republic. Poster.
  • Grathoff, G. & Obst, K (2012): Toarcian shales in Western Mecklenburg, Germany: Preliminary 3D reconstruction of mineralogy, geochemistry, and pore space. GEOHannover 2012 DGG Tagung 1.-3. October 2012.
  • Pelz, M., Buse, C., Grathoff, G.H. & Warr, L.N. (2012): Swelling behaviour of MX-80 bentonite at 40°C after cation exchange in Na+, K+, Ca2+ and Mg2+ salt solution and after alteration in cement solution- In situ XRD measurements. 6th Mid-European Clay Conference, Sept. 4-9, 2012 in Pruhonice, Czech Republic. Poster.
  • Wojatschke, J. & Warr, L.N. (2012): 3D FIB-SEM study of clay mineral coatings in faulted Staßfurt carbonate (Ca2) of the Permian Zechstein, North German Basin. Poster abstract. 6th Mid-European Clay Conference, Sept. 4-9, 2012 in Pruhonice, Czech Republic. Poster.
  • Baldermann, A. Grathoff, G.H. & Nickel, C. (2012): Micromilieu controlled glauconitization in fecal pellets at Oker (central germany). Clay minerals, 47, 4, 513-538.
  • Kasbohm, J., Pusch, R., Nguyen-Thanh, L. & Hoang-Minh, T. (2012): Lab-scale performance of selected expanable clays under HLW repository conditions. Environmental Earth Science, DOI 10.1007/s12665-012-2085-1.
  • Böttcher,M., Effenberger, H.S., Gehlken, P-L., Grathoff, G.H., Schmidt, B.C., Geprägs, P., Bahlo, R., Dellwig, O., Leipe, T., Winde, V., Deuschmann, A., Stark, A., Gallego-Torres, D., Martina-Ruiz, F. (2012): BaMn(CO3)2- a previously unrecognized double carbonarte in low temperature environments: Structural, spectroscopic, and textural tools for future identification. Chemie der Erde, 72, 85-89.
  • Schleicher, A.J., van der Pluijm, B.A.. & Warr, L.N. (2012): Chlorite-smectite clay minerals and fault behavior: Evidence from the San Andreas Fault Obsertvatory at Depth. Insights, the EarthScope newsletter.
  • Frings, K. & Warr, L.N. (2012): Hydrothermally altered mudrock of the Ciñera-Matallana coal basin, Cantabrian Zone, northern Spain. European Journal of Mineralogy, 24 (6), 1017 - 1029. Abstract.
  • Schleicher, A.J., van der Pluijm, B. & Warr, L.N. (2012): Chlorite-smectite clay minerals and fault behavior: New evidence from the San Andreas Fault Observatory at Depth (SAFOD) core.Lithosphere, 4, 209-220.
  • Warr, L.N. (2012): The Variscan Orogeny: the welding of Pangea. In: Geological History of Britain and Ireland. (2nd Edition). (Eds. Woodcock, N. and Strachan, R.), Wiley, 274-298.
2011
  • Perdial, J.N. & Warr, L.N. (2011): Hydration behavior of MX80 bentonite in a confined-volume system: Implications for backfill design. Clays and Clay Minerals, 59, 640-653.
  • Warr, L.N. & Grathoff, G. (2011): Geoscientific applications of particle detection and imaging techniques with special focus on the monitoring clay mineral reactions.In Handbook of Particle Detection (Editor C. Grupen). ISBN 978-3-642-13270-4. Springer.
2010
  • Schleicher, A. M., van der Pluijm, B. A. & Warr, L.N. (2010): Nano-coatings of clay and creep of the San Andreas Fault at Parkfield, California. Geology, 38, 667-670. Abstract.See press release.
2009
  • Warr, L.N., Perdrial, J.N., Lett, M-C., Heinrich-Salmeron, A. & Khodja, M. (2009): Clay-enhanced bioremediation of marine oil spills. Applied Clay Science, 46, 337- 345. IF 2.005. Abstract.
  • Perdrial, J. N., Warr, L.N., Pedrial, N., Lett, M.C. & Elsass, F. (2009): Interaction between smectite and bacteria: implications for bentonite as backfill material in the disposal of nuclear waste. Chemical Geology, 264, 281-294. IF 3.531. Abstract.
  • Schleicher, A. M., Tourscher, S., van der Pluijm, B. A. & Warr, L.N. (2009): Constraints on mineralization, fluid-rock interaction, and mass transfer during faulting at 2–3 km depth from the SAFOD drill hole, Journal of Geophysical Research, 114, B04202, doi:10.1029/2008JB006092. IF 3.147. Abstract.
  • Schleicher, A., Warr, L.N. & van der Pluijm, B.A. (2009): On the origin of mixed-layered clay minerals from the San Andreas Fault at 2.5 - 3 km depth (SAFOD at Parkfield, California). Contributions to Mineralogy and Petrology, 157, 173-187. IF 3.853. Abstract.
2007
  • Place, J., Geraud, Y., Diraisonson, M. & Warr, L.N. (2007): North-south relay structures and paleo-morphological reconstruction of the Xylocastro area (Corinth Gulf, Greece). Tectonophysics, 440, 121-139. IF 1.677. Abstract.
  • Warr, L.N. & Berger, J. (2007): Hydration of bentonite in natural waters: Application of "confined volume" wet-cell X-ray diffractometry. Physics and chemistry of the Earth, 32, 247-258. Abstract. IF 1.138. Abstract.
  • Warr, L.N., van der Pluijm; B. & Tourscher, S. (2007): The age and depth of exhumed friction melts along the Alpine Fault, New Zealand. Geology, 35, 603-606. Abstract. IF 3.89. Abstract.
2006
  • Schleicher, A., van der Pluijm, Solum, J.G and Warr, L.N. (2006a): The origin and significance clay-coated fractures in rock fragments of the SAFOD borehole (Parkfield, California). Geophysical Research Letters, 33, doi:10.1029/2006GL026505. IF 2.602. Abstract.
  • Schleicher, A. Warr, L.N., Kober, B., Clauer N & Laverret (2006b): Episodic mineralization of hydrothermal illite in the Soultz-sous-forets granite (Upper Rhine Graben, France). Contributions to Mineralogy and Petrology, 152, 349–364. doi:10.1007/s00410-006-0110-7. IF 2.754. Abstract.
  • Schleicher, A. Warr, L.N., van der Pluijm, B. (2006): Fluid focusing and back-reactions in the uplifted shoulder of the Rhine rift system: a clay minerals study along the Schauenburg fault zone (Heidelberg, Germany). International Journal of Earth Sciences, 95, 19-33. IF 1.905. Abstract.
2005
  • Marbach, T., Kober, B., Mangini, A., Warr, L.N. & Schleicher, A. (2005): Mobility of U-Th radionuclides connected with fault porosity: a case study of the Schauenburg Fault, Rhine Graben Shoulder, Germany. Physics and Chemistry of the Earth, 30, 1030-1037. IF 0.864. Abstract.
  • Warr, L.N. & van der Pluijm, B. (2005): Crystal fractionation in friction melts of seismic faults (Alpine Fault, New Zealand). Tectonophysics, 403, 111-124. IF 1.732. Abstract.
2004
  • Hofmann, H., Bauer, A. & Warr, L.N. (2004): Behaviour of smectite in strong salt brines under conditions relevant to the disposal of low- to medium-grade nuclear waste. Clays and Clay Minerals, 52, 14-24. IF 1.116. Abstract.
  • Frings, K., Lutz, R,. De Wall, H. and Warr, L.N. (2004): Coalification history of the Stephanian Ciñera-Matallana pull-apart basin, NW-Spain: Combining anisotropy of vitrinite reflectance and thermal modelling. International Journal of Earth Sciences, 93, 92-106. IF 1.147.Abstract.
  • Warr, L.N., Clauer, N. & Liewig, N. (2004): Predicting the diagenetic evolution of argillite repositoried based on the study of natural and experimental systems. In: Stability and Buffering Capacity of the Geosphere for Long-term isolation of radioactive waste. Applications to Argillaceous Media "Clay Club" Workshop Proceedings Braunschweig, Germany 9-11 December 2003, OECD Publishing, pages 83-87.
2003
  • Warr, L.N. & Hofmann, H. (2003): In-situ monitoring of powder reactions in percolating solution by wet-cell X-ray diffraction techniques. Journal of Applied Crystallography, 36, 948-949. IF 2.324.Abstract.
  • Peacor, D. & Warr, L.N. (2003): Reply to comment on "Evaluation of X-ray diffraction methods for determining the crystal growth mechanisms of clay minerals in mudstones, shales and slates" Schweizerische Mineralogische und Petrographische Mitteilungen, 83/3, 359-363. IF 0.755.
  • Solum, J., van der Pluijm, B., Peacor, D. & Warr, L.N. (2003): Influence of phyllosilicate mineral assemblages, fabrics, and fluids on the behaviour of the Punchbowl fault, southern Californian. Journal of Geophysical Research, 108, B5, 2233 (10 pages). IF 2.839. Abstract.
  • Ayllon, F., Bakker, R. & Warr, L.N. (2003): Thermal decrepitation of low temperature quartz inclusions in a Stephanian pull-apart basin, Northern Spain. Geofluids, 3, 49-68. IF 1.55.
  • Warr, L.N. van der Pluijm, B., Peacor, D.R. & Hall, C. (2003): Frictional melt pulses during a ca. 1.1 Ma earthquake along the Alpine Fault, New Zealand. Earth and Planetary Science Letters, 209, 39-52. IF 3.499.Abstract.
2001/02
  • Warr, L.N. & Peacor, D. (2002): Evaluation of X-ray diffraction methods for determining the crystal growth mechanisms of clay minerals in mudstones, shales and slate. Schweizerische Mineralogische und Petrographische Mitteilungen, 82/2, 187-202. IF 1.146. Abstract.
  • Schmitt, T., de Wall, H. & Warr, L.N. (2001): Enclave geometry and strain quantification in the Igoudrane granodiorite, Eastern Sahgro, Anti Atlas, Morocco. In: DE WALL, H. & GREILING, R.O. (eds.). Magmatic Evolution of a Neoproterozoic Island-Arc: Syn- to Post-Orogenic Igneous Activity in the Anti-Atlas (Morocco). International Cooperation Scientific Series, 45, 255-267.
vor 2000
  • Warr, L.N., Greiling, R.O., Rice, A.H.N., Abdeen, M.M., Sadek, M.F., Kamal el Din, G.M. and Osman, A.F. (1999): Low temperature metamorphism in the Hammamat Basins of the Eastern Desert of Egypt. In: De Wall, H. and Greiling, R.O. (eds.). Aspects of Pan-African Tectonics, 167-171.
  • Warr, L.N. & Nieto (1998): Crystallite thickness and defect density of phyllosilicates in low-temperature metamorphic pelites: A HRTEM and XRD study of clay mineral crystallinity index standards. The Canadian Mineralogist, 36, 1453-1474. Abstract.
  • Abdeen, M.M. & Warr, L.N. (1998): Late orogenic basin evolution, deformation and metamorphism in the Pan-African Basement, Wadi Queih, Eastern Desert of Egypt. In: NAIM, G.M. HUSSEIN, A.A., GREILING, R.O. & WARR, L.N. (eds.) International Cooperation Scientific Series, 42: 272 pp.
  • Warr, L.N., Greiling, R.O. & Zachrisson, E (1996): Thrust-related very low-grade metamorphism in the marginal part of an orogenic wedge, Scandinavian Caledonides. Tectonics, 15, 1213-1229. Abstract.
  • Geng, A., Warr, L.N. & Bechstät, T. (1996): Clay mineral crystallinity of diagenetic grade Middle Triassic Muschelkalk of the Rhine Graben, southwest Germany. XIIIth Conference on Clay Mineralogy and Petrology, Praha (1994). Acta Universitatis Carolinae Geologica, 38, 81-90.
  • Krumm, S., Kisch, H.J. & Warr, L.N. (1996): Interlaboratory study of the effects of sample preparation on illite crystallinity: a progress report. XIIIth Conference on Clay Mineralogy and Petrology, Praha (1994). Acta Universitatis Carolinae Geologica, 38, 263-270.
  • Warr, L.N. (1996): Standardized clay mineral crystallinity data from the very low-grade metamorphic facies of southern New Zealand. The European Journal of Mineralogy, 8, 115-127. Abstract.
  • Warr, L.N. (1995): A reconnaissance study of very low-grade metamorphism in south Devon. Proceeding of the Usshers Society, 8, 405-410. PDF.
  • Selwood, E.B., Thomas, J.M., Williams, B.J., Clayton, R.E., Durning, B., Smith, O. and Warr, L.N. (1994): The geology of the country around Trevose Head and Camelford. Memoir for 1:50 000 geological sheets 335 and 336 (England and Wales). British Geological Memoir, 149 pp.
  • Warr, L.N. and Greiling. R.O. (1994): Illite crystallinity data from the Caledonides of Västerbotten, north-central Sweden. Sveriges geol. unders., BRAP95047: 12 pp.
  • Warr, L.N. (1994): Illite and chlorite crystallinity data from the Djupdal-65, borehole 1, north-central Sweden.- Sveriges geol. unders., BRAP95048: 12 pp.
  • Warr, L.N. & Rice, A.H.N. (1994): Interlaboratory standardization and calibration of clay mineral crystallinity and crystallite size data. Journal of Metamorphic Geology, 12, 141-152. Abstract.
  • Osman, A.F., Greiling, R.O., Warr, L.N., Hilmy, M.E., Ragab, A.I., & EL Ramly, M.F. (1993): Distinction of different syn- and late orogenic sedimentary sequences by metamorphic grade and illite crystallinity (W. Zeidun, Central Eastern Desert, Egypt). In: THORWEIHE & SCHANDELMEIER (eds.) Geoscientific Research in Northeast Africa, Balkema, Rotterdam, 21-25.
  • Warr, L.N. (1993): Basin inversion and foreland basin development in the Rhenohercynian of south-west England. In: GAYER, R.A. & GREILING, R.O. (eds.). Rhenohercynian and Sub-Variscan Fold Belts. Earth Evolution Series, Vieweg,197-224.
  • Warr, L.N. & Hecht, C. (1993): A clay mineral crystallinity investigation of the Upper Carboniferous Culm Basin of southwest England. Proceedings of the Usshers Society, 8, 94-98. PDF.
  • Warr, L.N., Primmer, T.J. & Robinson, D. (1991): Variscanc very low-grade metamorphism in southwest England: a diastathermal and thrust-related origin. Journal of Metamorphic Geology, 9, 751-764. Abstract.
  • Hartley, A., & Warr, L.N. (1990): Upper Carboniferous foreland basin evolution in southwest Britain. Proceedings of the Ussher Society, 7, 212-216. PDF
  • Robinson, D., Warr, L.N. & Bevins, R.E. (1990): The illite crystallinity technique: a critical appraisal of its precision. Journal of Metamorphic Geology, 8, 333-344.
  • Warr, L.N. & Durning, B. (1990): Discussion on: A reappraisal of the facing confrontation: fold- or thrust-dominated tectonics? Journal of the Geological Society, London, 147, 408-410.
  • Warr, L.N. (1989): The structural evolution of the Davidstow Anticline and its relationship to the Southern Culm Overfold, north Cornwall. Proceedings of the Ussher Society, 7, 136-140. PDF
  • Warr, L.N. (1988): The deformational history of the area north-west of the Bodmin Moor granite, north Cornwall. Proceedings of the Ussher Society, 7, 67-72. PDF