Gerta Keller - Publications
1995. Ward, W. C., Keller, G., Stinnesbeck, W., and Adatte, T., 1995. Yucatan subsurface stratigraphy: Implications and constraints for the Chicxulub impact. Geology, 23:873-876.
1995. Keller, G., Li, L. and MacLeod, N., 1995. The Cretaceous/Tertiary boundary stratotype section at El Kef, Tunisia: How catastrophic was the mass extinction? Paleogeogr., Paleoclimatol., Paleoecol., 119: 221-254. PDF
1996. Adatte, T., Stinnesbeck, W. and Keller, G., 1996. Lithostratigraphic and mineralogical correlations of near-K/T boundary clastic sediments in NE Mexico: Implications for origin and nature of deposition. Geol. Society Amer., Special Paper 307, p. 211-226.
1996. Keller, G., 1996. The K/T mass extinction in planktic foraminifera biotic constraints for catastrophe theories. In, MacLeod, N. and Keller, G. (eds.), The Cretaceous-Tertiary mass extinction: Biotic and environmental events, Norton Press, New York, p. 63-100.
1996. Keller, G. and Stinnesbeck, W., 1996. Sea level changes, clastic deposits and megatsunamis across the Cretaceous-Tertiary boundary. In, MacLeod, N., and Keller, G. (eds.), The Cretaceous-Tertiary mass extinction: Biotic and environmental events, Norton Press, New York, p. 415-450.
1996. Keller, G., and Stinnesbeck, W., 1996. Near-K/T age of clastic deposits from Texas to Brazil: impact, volcanism and/or sea-level lowstand? Terra Nova, 8: 277-285.
1996. Lopez-Oliva, J. G., and Keller, G., 1996. Age and stratigraphy of near-K/T boundary clastic deposits in NE Mexico. Geol. Soc. Amer., Special Paper 307. p. 227-242.
1996. Lu, G., and Keller, G., 1996. Separating ecological assemblages using stable isotope signals: late Paleocene to early Eocene planktic foraminifera, DSDP Site 577, J. Foram. Res., 26(2): 103-112.
1996. Lu, G., Keller, G, Adatte, T., Ortiz, N., and Molina, E., 1996. Long-term (105) or short-term (103) d13C excursion near the Paleocene-Eocene transition: evidence from the Tethys. Terra Nova, 8:347-355.
1996. Pardo, A., Ortiz, N. and Keller, G., 1996. Latest Maastrichtian and K/T boundary foraminiferal turnover and environmental changes at Agost, Spain. In, MacLeod, N. and Keller, G., (eds.), The Cretaceous-Tertiary Mass Extinction: Biotic and Environmental Effects, Norton Press, New York, p. 157-191.
1996. Stinnesbeck, W. and Keller, G., 1996. Environmental changes across the Cretaceous-Tertiary boundary in northeastern Brazil. In, MacLeod, N. and Keller, G., (eds.), The Cretaceous-Tertiary Mass Extinction: Biotic and Environmental Effects, Norton Press, New York, p. 451-470.
1996. Stinnesbeck, W., Keller, G., Adatte, T., Lopez-Oliva, J. G. and MacLeod, N., 1996. Cretaceous-Tertiary boundary clastic deposits in NE Mexico: Bolide impact or sea-level lowstand? In, MacLeod, N. and Keller, G., (eds.), The Cretaceous-Tertiary Mass Extinction: Biotic and Environmental Effects, Norton Press, New York, p. 471-518.
1996. Stinnesbeck, W. and Keller, G., 1996. K/T boundary clastic deposits in NE Mexico and NE Brazil: Evidence for megatsunamis or sea-level changes? Geol. Soc. Amer. Special Paper 307, p. 197-210.
1996. Vicenzi, V., G. Keller and W. Stinnesbeck, 1996. Glass in near-K/T boundary Mexican sediments” A microanalytical study. Geol. Soc. France, Paris, Dec. 2-3.
1997. Keller, G., Adatte, T., Hollis, C., Ordõnez, M., Zambrano, I., Jiménez, N., Stinnesbeck, W., Aleman, A., and Hale-Erlich, W., 1997. High-latitude response to the K/T boundary event in Ecuador. Marine Micropaleontology,
1997. Keller, G., Lopez-Oliva, J. G., Stinnesbeck, W., and Adatte, T., 1997. Age, stratigraphy and deposition of near-K/T siliciclastic deposits in Mexico: Relation to bolide impact? Geol. Soc. Amer. Bull., 109: 410-428.
1997. W. Stinnesbeck, G. Keller, J, De La Cruz, C. De León, N. MacLeod, J.E. Whittacker, 1995. The Cretaceous-Tertiary boundary in Guatemala: limestone breccia deposits from the South Peten Basin, Geologische Rundschau, v. 86: 686-709.
1997. Pardo, A., Keller, G., Molina, E and J.I. Canudo, l997. Planktic foraminiferal turnover across the Paleocene-Eocene transition at DSDP Site 401, Bay of Biscay, North Atlantic. Marine Micropaleontology, 29: 129-158.
1998. Bolle, M.-P., Adatte, T., Keller, G., v. Salis, K., and Hunziker, J., l998. Stratigraphy, mineralogy and geochemistry of the Trabakua Pass and Ermua sections in Spain: Paleocene-Eocene transition. Ecologae Geol. Helv. v. 91: 1-25.
1998. Li, L., and Keller, G., l998. Maastrichtian climate, productivity and faunal turnovers in planktic foraminifera in South Atlantic DSDP Sites 525A and 21, Marine Micropaleontology, 33: 55-86. PDF Version
1998. Keller, G., Li, L., Stinnesbeck, W., and Vicenzi, E., l998. The K/T mass extinction, Chicxulub and the impact-kill effect. Geol. Soc. France, 169940: 485-491.
1998. Keller, G., Adatte, T., Stinnesbeck, W., Stuben, D., Kramar, U., Berner, Z., Li, L. and K. von Salis Perch-Nielsen, l998. The Cretaceous-Tertiary transition on the shallow Saharan Platform in southern Tunisia. GeoBios, v. 30,7: 951-975.
1998. Li, L. and Keller, G., l998. Diversification and extinction in Campanian-Maastrichtian planktic foraminifera of northwestern Tunisia. Eclogae Geol. Helv., 91: 75-102.
1998. Oberhänsli, H., Keller, G., Adatte, T., and Pardo, A., l998. Environmentally and diagenetically controlled changes across the K/T transition at Koshak, Mangyshlak (Kazakhstan). Geol. Soc. France, 169(4): 493-501.
1998. Lu, G., Adatte, T., Keller, G., and Molina, E., l998. Abrupt climatic, oceanographic and ecologic changes near the Paleocene-Eocene transition in the deep Tethys basin, Ecologae Geol. Helv., 91: 293-306.
1998. Lu, G., Keller, G. and Pardo, A., l998. Stability and change in Tethyan planktic foraminifera across the Paleocene-Eocene transition. Marine Micropaleontology 35: 203-233.
1998. Li, L., and Keller, G., l998. Abrupt deep-sea warming at the end of the Cretaceous. Geology, 26(11): 995-998.
1999. Bolle, M-P., Adatte, T., Keller, G., von Salis Perch-Nielsen, K., and Burns, S., 1999. Climate and sea level fluctuations during the Paleocene-Eocene transition in Tunisia. Bull., Geol. Soc. France, 170(5):661-680.
1999. Pardo, A., Keller, G., and Oberhansli, H., 1999. Paleoecologic and Paleoceanographic evolution of the Tethyan realm during the Paleocene-Eocene transition, J. Foram. Res. 29(l): 37-57.
1999. Remane, J. Keller, G., Hardenbol, J. and M. Ben Haj Ali, l999. Report on the International Workshop on Cretaceous-Paleogene Transitions, Episodes, 22(1):47-48.
1999. Li , L., Keller, G., and Stinnesbeck, W., 1999. The late Campanian and Maastrichtian in northwestern Tunisia: Paleoenvironmental inferences from lithology,macrofauna and benthic foraminifera. Creteaceous Research, 20: 231-252. PDF Version
1999. Li, L. and Keller, G., l999. Variability in Late Cretaceous climate and deep waters: Evidence from stable isotopes. Marine Geology, 161: 171-190. PDF Version
1999. Pardo, A. and Keller, G. (1999): Aspectos paleoceanográficos y paleoecológicos del límite Cretácico/Terciario en la Península de Mangyshlak (Kazakstan): inferencias a partir de foraminíferos planctónicos. Rev. Esp. Micropal. 31 no. 2
1999. Stinnesbeck, W., Keller, G. Adatte, T., Stueben, D., Kramar, U., Berner, Z., Desremeaux, C., and Moliere, E., 2000. Belox, Haiti, revisited: multiple events across the Cretaceous-Tertiary transition in the Caribbean? Terra Nova, v. 11: 303-310.
2000. Keller, G. and Stinnesbeck, W. 2000. Iridium and the K/T boundary at El Caribe,Guatemala. International Journal of Earth Sciences 88, p. 840-843. PDF Version.
2000. Li, L., Keller, G., Adatte, T. and W. Stinnesbeck, 2000.Late Cretaceous sea-level changes in Tunisia: a multi-disciplinary approach. Journal of Geological Society, London, 157:447-458. PDF Version
2000. Bolle, M.-P., Pardo, A., Hinrichs, K.U., Adatte, T., von Salis, K., Burns, S., Keller, G., and Muzylev, N., 2000. The Paleocene-Eocene transition in the marginal northeastern Tethys (Kazakhstan and Uzbekistan. In. J. Earth Sci, 89, 390-414.
2001. Stinnesbeck, W., P. Schulte, F. Lindenmaier, T. Adatte, M. Affolter, L. Schilli, G. Keller, D. Stueben, Z. Berner, U. Kramer, S. Burns, and J.G. Lopez-Oliva, 2001. Late Maastrichtian age of spherule deposits in northeastern Mexico: implications for Chicxulub scenario. Canadian Journal of Earth Sciences, 38, 229-238.
2001. Keller, G., T. Adatte, W. Stinnesbeck, D. Stueben and Z. Berner, 2001. Age, chemo- and biostratigraphy of Haiti spherule-rich deposits: a multi-event K-T scenario. Canadian Journal of Earth Sciences, 38, 197-227.
2001. Keller, G., 2001. The end-Cretaceous Mass Extinction: Year 2000 Assessment. J. Planetary and Space Science, 49,817-830. PDF Version
2001. Keller, G., Q. Han, T. Adatte, and S.J. Burns, in 2001. Paleoenvironment of the Cenomanian-Turonian transition at Eastbourne, England. Cretaceous Research, 22, 391-422. PDF Version
2001. Tantawy, A.A., Keller, G., Adatte, T., Stinnesbeck, W., Kassab, A., and Schulte, P., 2001. Maastrichtian to Paleocene (Dakhla Formation) depositional environment of the Western Desert in Egypt: Sedimentology, Mineralogy and integrated micro- and macrofossil biostratigraphies. Cretaceous Research, 22, 795-827. PDF
2001. U. Kramar, D. Stüben, Z. Berner, W. Stinnesbeck, H. Philipp, G. Keller, 2002. Are Ir anomalies sufficient and unique indicators for cosmic events? Planetary and Space Science 49, 831-837. PDF
2002. Keller, G., Adatte, T., Stinnesbeck, W., Affolter, M. Schilli, L. and Lopez-Oliva, J.G., 2002. Multiple Spherule Layers in the late Maastrichtian of northeastern Mexico. GSA Special Vol. 356, 145-162 PDF
2002. Stüben, D., Kramer, U., Berner, Z., Eckhardt, J.D., Stinnesbeck, W., Keller, G., Adatte, T. and Heide, K. 2002. Two anomalies of platinum group elements above the Cretaceous-Tertiary boundary at Beloc, Haiti: Geochemical context and consequences for the impact scenario: Geological Society of America, Special Volume, 356, 163-188. PDF
2002, Adatte, T. Keller, G., Burns, S., Stoykova, K.H., Ivanov, M.I., Vangelov, D., Kramer, U. and Stueben, D., 2002. Paleoenvironment across the Cretaceous-Tertiary (K-T) transition at Bjala, eastern Bulgaria. GSA Special Paper 356, 231-252. PDF
2002. Keller, G., Adatte, T., Stinnesbeck, W., Luciani, V., Karoui, N., Zaghbib- Turki, D., 2002. Paleoecology of the Cretaceous-Tertiary mass extinction in planktic foraminifera. Paleogeogr., Paleoclimatol., Paleoecol., 178, 257-298. PDF (5867 K)
2002. Karoui-Yaakoub, N., Zaghbib-Turki, D. and Keller, G., 2002. The Cretaceous-Tertiary (K-T) mass extinction in planktic foraminifera at Elles I and El Melah, Tunisia. Paleogeogr., Paleoclimatol., Paleoecol., 178, 233-256. PDF (1434 K)
2002, Abramovich, S. and Keller, G., 2002. High stress late Maastrichtian Paleoenvironment in Tunisia: Inference from planktic foraminifera. Paleogeogr., Paleoclimatol., Paleoecol., 178, 145-164. PDF (1678 K)
2002,. Stueben, D., Kramar, U., Berner, Z., Leosson, M., Keller, G., Adatte, T., and W. Stinnesbeck, 2002. High resolution carbon and oxygen isotope profiles of foraminifera and the Ca-normaized Sr curve of the late Maastrichtian at Elles, Tunisia. Paleogeogr., Paleoclimatol., Paleoecol., 178, 321-345. PDF (1314 K)
2002. Adatte, T., Keller, G., Stinnesbeck, W., 2002. Late Cretaceous to early Paleocene climate and sea-level fluctuations. Paleogeogr., Paleoclimatol., Paleoecol., 178, 165-198. PDF (2868 K)
2002. Keller, G. and Stinnesbeck, W., 2002. Slumping and a sandbar deposit at the Cretaceous-Tertiary boundary in the El Tecolote section (northeastern Mexico): An impact-induced sediment gravity flow – Comment. Geology, 30, 382-383.
2002. Wolfgang Stinnesbeck, Gerta Keller, Peter Schulte, Doris Stüben, Zsolt Berner, Utz Kramar, José Guadalupe Lopez-Oliva, 2002. The Cretaceous-Tertiary (K/T) Boundary transition at Coxquihui, state of Veracruz, Mexico: evidence for an early Danian impact event? Am. J. S. Amer. Res. 15, 497-509. PDF
2002. Keller, G., 2002. Guembelitria dominated late Maastrichtian planktic foraminiferal assemblages mimic early Danian in the Eastern Desert of Egypt. Marine Micropaleontology, 47(l-2), 71-99. PDF
2002. Keller, G., Adatte, T., Burns, S.J., and A. Tantawy, 2002.High stress paleoenvironment during the late Maastrichtian to early Paleocene in Central Egypt. Paleogeogr., Paleoclimato., Paleoecol., v. 187, 35-60. PDF (2334 K)
2002. Abramovich, S., Keller, G., Adatte, T., Stinnesbeck, W., Hottinger, L., Stueben, D., Berner, Z., Ramanivosoa, B. and A. Randriamanantenasoa, 2002. Age and Paleoenvironment of the Maastrichtian-Paleocene of the Mahajanga Basin, Madagascar: a multidisciplinary approach. Marine Micropaleontology, 47, 17-70. PDF
2003. Schulte, P., Stinnesbeck, W., Stueben, D., Kramar, U., Berner, Z., Keller, G., and Adatte, T., 2003. Fe-rich an K-rich mafic spherules from slumped and channelized Chicxulub ejecta deposits in the northern La Sierrita area, NE Mexico. Int. J.Earth Sci. 92, 114-142. PDF
2003. Stueben, D., Kramar, U., Berner, Z.A., Meudt, M., Keller, G., Abramovich, S.,Adatte, T., Hambach, U., and Stinnesbeck, W., 2003. Late Maastrichtian paleoclimatic and paleoceanographic changes inferred from Sr/Ca ratio and stable isotopes. Paleoclimatol. Paleoecol. Paleogeogr., 199, 107-127. PDF
2003. Keller, G., Stinnesbeck, W., Adatte, T. and Stueben, D., 2003. Multiple Impacts across the Cretaceous-Tertiary boundary. Earth Science Reviews, 62, 327-363. PDF
2003. Keller, G., Stinnesbeck, W., Adatte, T., Holland, B., Stueben, D., Harting, M., C. de Leon and J. de la Cruz, 2003.Spherule deposits in Cretaceous-Tertiary boundary sediments in Belize and Guatemala. J. Geol. London, 160, 1-13. PDF
2003. Keller, G., 2003. Biotic effects of impacts and volcanism. Earth and Planetary Science Letters 215, 249-264. PDF
2003. Gerta Keller, Thierry Adatte and Wolfgang Stinnesbeck, 2003. The non-smoking gun, Geoscientist 13 (11), 8-11.
2003. Abramovich, S., Keller, G., Stueben, D. and Berner, Z., 2003. Characterization of late Campanian and Maastrichtian planktic foraminiferal depth habitats and vital activities based on stable isotopes. Paleoclimatol. Paleoecol. Paleogeogr. 202: 1-29. PDF
2004. Tantawy, A.A.A. and Keller, G., 2004. Biotic Effects of volcanism on calcareous nannofossils and planktic foraminifera: Ninetyeast Ridge, Indian Ocean. Egyptian Journal of Paleontolology, 3, 1-23.
2004. Keller, G.,2004. Suche nach der Ursache des Massensterbens vor 65 Millionen Jahren. Werdenberger Jahrbuch p. 189-200. PDF
2008. Keller, G.. Adatte, T. G.R. Baum, Z. Berner, 2008. Reply to Comment by Schulte et al. on “Chicxulub Impact Predates K-T Boundary: New Evidence from Brazos, Texas” Earth and Planet. Sci. Letters 269, 620-628. PDF
2008. Keller, G.,2008. Impact Stratigraphy: old principle - new reality. GSA Special Paper 437, p.147-178. PDF
2008. Keller, G., Adatte, T., Gardin, S., Bartolini, A., Bajpai, S., 2008. Main Deccan volcanism phase ends at K-T mass extinction: Evidence from the Krishna- Godavari Basin, SE India. Earth and Planet. Sci Lett. 268, 293-311. PDF
2008. McCloskey, T.A., and Keller, G., 2008. 5000 year Sedimentary record of Hurricane strikes in Central Belize. Quaternary International, doi:10.1016/j.quaint.2008.03.003 PDF
2008. Pardo, A. and Keller, G., 2008. Biotic Effects of Environmental Catastrophes at the end of the Cretaceous: Guembelitria and Heterohelix Blooms. Cretaceous Research, v. 29 (5/6), 1058-1073; doi:10.1016/j.cretres.2008.05.031. PDF
2008. Keller, G., 2008. Cretaceous climate, volcanism, impactgs and biotic effects. Cretaceous Research, v. 29 (5/6), 754-771; doi:10.1016/j.cretres.2008.05.030. PDF
2008. Keller, G., Adatte, T., Berner, Z., Chellai, E.H., Stueben, D., 2008. Oceanic Events and Biotic Effects of the Cenomanian-Turonian Anoxic Event, Tarfaya Basin, Morocco. Cretaceous Research, v. 29 (5/6), 976-994, doi:10.1016/j.cretres.2008.05.020 PDF
2008. Mort, H.P., Adatte, T., Keller, G., Bartels, D., Föllmi, K.B., Steinmann, P., Berner, Z., Chellai, E.H., 2008. Organic carbon deposition and phosphorus accumulation during oceanic anoxic event 2 in Tarfaya, Morocco. Cretaceous Research, ISC7, v.29 (5/6), 1008-1023, doi:10.1016/j.cretres.2008.05.026.PDF
2008. Gertsch, B., Keller, G., Adatte, T., Berner, Z., Tantawy, A.A. Kassab, A.S., El-Sabbagh, A.M., Mort, H.P.and Stueben, D., 2008. Cenomanian-Turonian transition in shallow water sequences of the Sinai, Egypt. Int. J. Earth Sciences (Geol. Rundschau) DOI 10.1007/s00531-008-0374-4. PDF
2009. Keller, G., Abramovich, S., Berner, Z., Adatte, T., 2009. Biotic effects of the Chicxulub impact, K-T catastrophe and sea-level change in Texas. Paleogeogr., Paleoclimatol., Paleoecol., 271, 52-68. doi:10.1016/j.palaeo.2008.09.007 PDF
2009. Keller, G., Sharma, R., Khosla, A., Khosla, S.C., Bajpai, S., 2009. Early Danian planktic foraminifera from Intertrappean beds at Jhilmili, Chhindwara District, Madhya Pradesh, India. J. Foram. Res., 39(1), 40-55.PDF
2009. Keller, G., Adatte, T., Bajpai, S., Khosla, A., Sharma, R., Widdowson, M., Khosla, S.C., Mohabey, D.M., Gertsch, B., Sahni, A., 2009. Early Danian Shallow marine Deccan intertrappean at Jhilmili, Chhindwara, NE India: Implications for Paleogeography. EPSL 282, 10-23. PDF doi:10.1016/j.epsl.2009.02.016
2009. Keller, G., Adatte, T., Berner, Z., Pardo, A., Lopez-Oliva, L., 2009. New Evidence concerning the Age and Biotoc Effects of the Chicxulub impact in Mexico. J. Geol. Society, London 166, 393-411. doi:10.1144/0016-76492008-116. PDF
2009. Keller, G. and Abramovich, S., 2009. Lilliput Effect in late Maastrichtian planktic Foraminifera: Response to Environmental Stress. Paleogeogr.,Paleoclimatol., Paleoecol., 271, 52-68. doi:10.1016/j.palaeo.2008.09.007 PDF
2009. Tantawy, A.A.A., Keller, G., Pardo, A., 2009. Late Maastrichtian volcanism in the Indian Ocean: Effects on Calcareous Nannofossils and planktic Foraminiferea. Paleogeogr., Paleoclimatol., Paleoecol., 284, 63-87. Doi: 10.1016/j.palaeo.2009.08.025 PDF
2009. Keller, G., Sahni, A., and Bajpai, S., 2009. Deccan volcanism, the KT mass extinction and dinosaurs. J. Biosciences 34, 709-728. PDF
2009. Pardo, A., Keller, G., Adatte, T., 2009. Extinciones y evolucion de la vida;El ocaso de los dinosaurios; India: volcanismo masivo en el Transito K/T. Ciencia Y DeSarollo, Nov. 2009, 31-56.
2010. Gertsch, B., Keller, G., Adatte, T., Berner, Z., Tantawy, A.A., El-Sabbagh, A.M., Mort, H.P. and Stueben, D., 2010. Middle and Late Cenomanian anoxic events in shallow shelf environments of western Morocco. Sedimentology, 2010, doi: 10.1111/j.1365-3091.2010.01151.x PDF
2010. Malarkodi, N., Keller, G., Fayazudeen, P.J., and Mallikarjuna, U.B., 2010. Foraminifera from the early Danian Intertrappean beds in Rajahmundry Quarries, Andhra Pradesh, SE India. J. Geological Society of India, v. 75.p. 851-863. PDF
2010. Keller, G., 2010. KT Mass Extinction: Theories and Controversies. Geoscientist Online, May 2010. https://www.geolsoc.org.uk/gsl/geoscientist/features/keller/page7669.html
Books
Keller, G., Stinnesbeck, W., Adatte, T., MacLeod, N., and Lowe, D. R., 1994. Field Guide to Cretaceous-Tertiary boundary sections in Northeastern Mexico, Lunar and Planetary Institute, LPI Contribution No. 827, 110 p.
MacLeod, N., and Keller, G., 1996. Cretaceous-Tertiary Mass Extinctions, (MacLeod, N., and Keller, G., eds.), W. W. Norton & Company, Inc., New York, 575 p.

