Science report
| 
02 Dec 2019
Science report |
| 02 Dec 2019
| 02 Dec 2019
Scientific drilling of Lake Chalco, Basin of Mexico (MexiDrill)
Large Lakes Observatory & Dept. of Earth and Environmental Sciences, University of Minnesota Duluth, Duluth, MN 55812, USA
Margarita Caballero
Instituto de Geofísica, Universidad Nacional Autónoma de
México, Mexico City, 04510, Mexico
Enrique Cabral Cano
Instituto de Geofísica, Universidad Nacional Autónoma de
México, Mexico City, 04510, Mexico
Peter J. Fawcett
Department of Earth and Planetary Science, University of New Mexico, Albuquerque, NM 87131, USA
Socorro Lozano-García
Instituto de Geología, Universidad Nacional Autónoma de
México, Mexico City, 04510, Mexico
Beatriz Ortega
Instituto de Geofísica, Universidad Nacional Autónoma de
México, Mexico City, 04510, Mexico
Liseth Pérez
Institut für Geosysteme und Bioindikation, Technische
Universität Braunschweig, 38106 Braunschweig, Germany
Antje Schwalb
Institut für Geosysteme und Bioindikation, Technische
Universität Braunschweig, 38106 Braunschweig, Germany
Victoria Smith
Research Laboratory for Archaeology and the History of Art, University of Oxford, OX1 3TG, Oxford, UK
Byron A. Steinman
Large Lakes Observatory & Dept. of Earth and Environmental Sciences, University of Minnesota Duluth, Duluth, MN 55812, USA
Mona Stockhecke
Large Lakes Observatory & Dept. of Earth and Environmental Sciences, University of Minnesota Duluth, Duluth, MN 55812, USA
Blas Valero-Garcés
Instituto Pirenaico de Ecología, Agencia Consejo Superior de
Investigaciones Científicas, Avda Montañana 1005, 50059 Zaragoza, Spain
Sebastian Watt
School of Geography, Earth and Environmental Sciences, University of Birmingham, B15 2TT, Birmingham, UK
Nigel J. Wattrus
Large Lakes Observatory & Dept. of Earth and Environmental Sciences, University of Minnesota Duluth, Duluth, MN 55812, USA
Josef P. Werne
Department of Geology and Environmental Science, University of
Pittsburgh, Pittsburgh, PA 15260, USA
Thomas Wonik
Leibniz-Institut für Angewandte Geophysik, Stilleweg 2, 30655
Hannover, Germany
Amy E. Myrbo
LacCore and Continental Scientific Drilling Coordination Office,
Department of Earth Sciences, University of Minnesota Twin Cities,
Minneapolis, MN 55455, USA
Anders J. Noren
LacCore and Continental Scientific Drilling Coordination Office,
Department of Earth Sciences, University of Minnesota Twin Cities,
Minneapolis, MN 55455, USA
Ryan O'Grady
LacCore and Continental Scientific Drilling Coordination Office,
Department of Earth Sciences, University of Minnesota Twin Cities,
Minneapolis, MN 55455, USA
Douglas Schnurrenberger
LacCore and Continental Scientific Drilling Coordination Office,
Department of Earth Sciences, University of Minnesota Twin Cities,
Minneapolis, MN 55455, USA
the MexiDrill Team
A full list of authors and their affiliations appears at the end of the paper.
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Biagio Giaccio, Bernd Wagner, Giovanni Zanchetta, Adele Bertini, Gian Paolo Cavinato, Roberto de Franco, Fabio Florindo, David A. Hodell, Thomas A. Neubauer, Sebastien Nomade, Alison Pereira, Laura Sadori, Sara Satolli, Polychronis C. Tzedakis, Paul Albert, Paolo Boncio, Cindy De Jonge, Alexander Francke, Christine Heim, Alessia Masi, Marta Marchegiano, Helen M. Roberts, Anders Noren, and the MEME team
Sci. Dril., 33, 249–266, https://doi.org/10.5194/sd-33-249-2024, https://doi.org/10.5194/sd-33-249-2024, 2024
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A total of 42 Earth scientists from 14 countries met in Gioia dei Marsi, central Italy, on 23 to 27 October 2023 to explore the potential for deep drilling of the thick lake sediment sequence of the Fucino Basin. The aim was to reconstruct the history of climate, ecosystem, and biodiversity changes and of the explosive volcanism and tectonics in central Italy over the last 3.5 million years, constrained by a detailed radiometric chronology.
Evan R. Collins, Troy M. Ferland, Isla S. Castañeda, R. Bernhart Owen, Tim K. Lowenstein, Andrew S. Cohen, Robin W. Renaut, Molly D. O'Beirne, and Josef P. Werne
EGUsphere, https://doi.org/10.5194/egusphere-2024-3006, https://doi.org/10.5194/egusphere-2024-3006, 2024
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Archaeal molecular fossils (tetraethers) have been used around the globe to track changes in climate. Little is known about archaeal response to environmental change in soda lakes, especially lakes influenced by hydrothermal inputs. For the first time in Lake Magadi, we show tetraethers tracking abrupt changes in methane and non-methane producers due to hydrothermal inputs to the lake. This study provides insight into the role of hydrothermal water sources and methane production in soda lakes.
Jonathan M. G. Stine, Joshua M. Feinberg, Adam K. Huttenlocker, Randall B. Irmis, Declan Ramirez, Rashida Doctor, John McDaris, Charles M. Henderson, Michael T. Read, Kristina Brady Shannon, Anders Noren, Ryan O'Grady, Ayva Sloo, Patrick Steury, Diego P. Fernandez, Amy C. Henrici, and Neil J. Tabor
Sci. Dril., 33, 109–128, https://doi.org/10.5194/sd-33-109-2024, https://doi.org/10.5194/sd-33-109-2024, 2024
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We present initial results from the upper 450 m of ER-1, a legacy core collected from modern-day Bears Ears National Monument, Utah, USA. This section contains a relatively complete record of Upper Carboniferous to Early Permian sediments, providing a unique window on Earth's last icehouse–hothouse transition. Ongoing research will tie our results to important fossil sites, allowing us to better understand how this climate shift contributed to the evolution of terrestrial life.
Catherine C. Beck, Melissa Berke, Craig S. Feibel, Verena Foerster, Lydia Olaka, Helen M. Roberts, Christopher A. Scholz, Kat Cantner, Anders Noren, Geoffery Mibei Kiptoo, James Muirhead, and the Deep Drilling in the Turkana Basin (DDTB) project team
Sci. Dril., 33, 93–108, https://doi.org/10.5194/sd-33-93-2024, https://doi.org/10.5194/sd-33-93-2024, 2024
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The Deep Drilling in the Turkana Basin project seeks to determine the relative impacts of tectonics and climate on eastern African ecosystems. To organize goals for coring, we hosted a workshop in Nairobi, Kenya, which focused on how a 4 Myr sedimentary core from Turkana will uniquely address research objectives related to basin evolution, past climates and environments, and modern resources. We concluded that a Pliocene to modern record is best accomplished through a two-phase drilling project.
Margarita Caballero, Gabriela Vazquez, Javier Alcocer, and Lucy Natividad Mora Palomino
EGUsphere, https://doi.org/10.5194/egusphere-2024-914, https://doi.org/10.5194/egusphere-2024-914, 2024
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This work evaluates limnological conditions and diatom diversity in 16 tropical lakes in southern Mexico. Impacted lakes showed higher lake productivity and chemical changes (higher salinity and sulphates). Diatom species indicative of human induced degradation were identified and degradation occurring in one of the lakes was documented using paleolimnological methods. This highlighted the risk that species of restricted distribution could be facing extirpation from their natural habitats.
Sudip Acharya, Maximilian Prochnow, Thomas Kasper, Linda Langhans, Peter Frenzel, Paul Strobel, Marcel Bliedtner, Gerhard Daut, Christopher Berndt, Sönke Szidat, Gary Salazar, Antje Schwalb, and Roland Zech
E&G Quaternary Sci. J., 72, 219–234, https://doi.org/10.5194/egqsj-72-219-2023, https://doi.org/10.5194/egqsj-72-219-2023, 2023
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This study presents a palaeoenvironmental record from Lake Höglwörth, Bavaria, Germany. Before 870 CE peat deposits existed. Erosion increased from 1240 to 1380 CE, followed by aquatic productivity and anoxia from 1310 to 1470 CE. Increased allochthonous input and a substantial shift in the aquatic community in 1701 were caused by construction of a mill. Recent anoxia has been observed since the 1960s.
Alison J. Smith, Emi Ito, Natalie Burls, Leon Clarke, Timme Donders, Robert Hatfield, Stephen Kuehn, Andreas Koutsodendris, Tim Lowenstein, David McGee, Peter Molnar, Alexander Prokopenko, Katie Snell, Blas Valero Garcés, Josef Werne, Christian Zeeden, and the PlioWest Working Consortium
Sci. Dril., 32, 61–72, https://doi.org/10.5194/sd-32-61-2023, https://doi.org/10.5194/sd-32-61-2023, 2023
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Western North American contains accessible and under-recognized paleolake records that hold the keys to understanding the drivers of wetter conditions in Pliocene Epoch subtropical drylands worldwide. In a 2021 ICDP workshop, we chose five paleolake basins to study that span 7° of latitude in a unique array able to capture a detailed record of hydroclimate during the Early Pliocene warm period and subsequent Pleistocene cooling. We propose new drill cores for three of these basins.
Steffen Kutterolf, Mark Brenner, Robert A. Dull, Armin Freundt, Jens Kallmeyer, Sebastian Krastel, Sergei Katsev, Elodie Lebas, Axel Meyer, Liseth Pérez, Juanita Rausch, Armando Saballos, Antje Schwalb, and Wilfried Strauch
Sci. Dril., 32, 73–84, https://doi.org/10.5194/sd-32-73-2023, https://doi.org/10.5194/sd-32-73-2023, 2023
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The NICA-BRIDGE workshop proposes a milestone-driven three-phase project to ICDP and later ICDP/IODP involving short- and long-core drilling in the Nicaraguan lakes and in the Pacific Sandino Basin to (1) reconstruct tropical climate and environmental changes and their external controlling mechanisms over several million years, (2) assess magnitudes and recurrence times of multiple natural hazards, and (3) provide
baselineenvironmental data for monitoring lake conditions.
Jonathan Obrist-Farner, Andreas Eckert, Peter M. J. Douglas, Liseth Perez, Alex Correa-Metrio, Bronwen L. Konecky, Thorsten Bauersachs, Susan Zimmerman, Stephanie Scheidt, Mark Brenner, Steffen Kutterolf, Jeremy Maurer, Omar Flores, Caroline M. Burberry, Anders Noren, Amy Myrbo, Matthew Lachniet, Nigel Wattrus, Derek Gibson, and the LIBRE scientific team
Sci. Dril., 32, 85–100, https://doi.org/10.5194/sd-32-85-2023, https://doi.org/10.5194/sd-32-85-2023, 2023
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In August 2022, 65 scientists from 13 countries gathered in Antigua, Guatemala, for a workshop, co-funded by the US National Science Foundation and the International Continental Scientific Drilling Program. This workshop considered the potential of establishing a continental scientific drilling program in the Lake Izabal Basin, eastern Guatemala, with the goals of establishing a borehole observatory and investigating one of the longest continental records from the northern Neotropics.
Rodrigo Martínez-Abarca, Michelle Abstein, Frederik Schenk, David Hodell, Philipp Hoelzmann, Mark Brenner, Steffen Kutterolf, Sergio Cohuo, Laura Macario-González, Mona Stockhecke, Jason Curtis, Flavio S. Anselmetti, Daniel Ariztegui, Thomas Guilderson, Alexander Correa-Metrio, Thorsten Bauersachs, Liseth Pérez, and Antje Schwalb
Clim. Past, 19, 1409–1434, https://doi.org/10.5194/cp-19-1409-2023, https://doi.org/10.5194/cp-19-1409-2023, 2023
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Lake Petén Itzá, northern Guatemala, is one of the oldest lakes in the northern Neotropics. In this study, we analyzed geochemical and mineralogical data to decipher the hydrological response of the lake to climate and environmental changes between 59 and 15 cal ka BP. We also compare the response of Petén Itzá with other regional records to discern the possible climate forcings that influenced them. Short-term climate oscillations such as Greenland interstadials and stadials are also detected.
Laura Macario-González, Sergio Cohuo, Philipp Hoelzmann, Liseth Pérez, Manuel Elías-Gutiérrez, Margarita Caballero, Alexis Oliva, Margarita Palmieri, María Renée Álvarez, and Antje Schwalb
Biogeosciences, 19, 5167–5185, https://doi.org/10.5194/bg-19-5167-2022, https://doi.org/10.5194/bg-19-5167-2022, 2022
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We evaluate the relationships between geodiversity, limnological conditions, and freshwater ostracodes from southern Mexico to Nicaragua. Geological, limnological, geochemical, and mineralogical characteristics of 76 systems reveal two main limnological regions and seven subregions. Water ionic and sediment composition are the most influential. Geodiversity strongly influences limnological conditions, which in turn influence ostracode composition and distribution.
Pierre Véquaud, Sylvie Derenne, Alexandre Thibault, Christelle Anquetil, Giuliano Bonanomi, Sylvie Collin, Sergio Contreras, Andrew T. Nottingham, Pierre Sabatier, Norma Salinas, Wesley P. Scott, Josef P. Werne, and Arnaud Huguet
Biogeosciences, 18, 3937–3959, https://doi.org/10.5194/bg-18-3937-2021, https://doi.org/10.5194/bg-18-3937-2021, 2021
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A better understanding of past climate variations is essential to apprehend future climatic changes. The aim of this study is to investigate the applicability of specific organic compounds of bacterial origin, 3-hydroxy fatty acids (3-OH FAs), as temperature and pH proxies at the global level using an extended soil dataset. We show the major potential of 3-OH FAs as such proxies in terrestrial environments through the different models presented and their application for palaeoreconstruction.
Matthias Bücker, Adrián Flores Orozco, Jakob Gallistl, Matthias Steiner, Lukas Aigner, Johannes Hoppenbrock, Ruth Glebe, Wendy Morales Barrera, Carlos Pita de la Paz, César Emilio García García, José Alberto Razo Pérez, Johannes Buckel, Andreas Hördt, Antje Schwalb, and Liseth Pérez
Solid Earth, 12, 439–461, https://doi.org/10.5194/se-12-439-2021, https://doi.org/10.5194/se-12-439-2021, 2021
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We use seismic, electromagnetic, and geoelectrical methods to assess sediment thickness and lake-bottom geology of two karst lakes. An unexpected drainage event provided us with the unusual opportunity to compare water-borne measurements with measurements carried out on the dry lake floor. The resulting data set does not only provide insight into the specific lake-bottom geology of the studied lakes but also evidences the potential and limitations of the employed field methods.
Johannes Buckel, Eike Reinosch, Andreas Hördt, Fan Zhang, Björn Riedel, Markus Gerke, Antje Schwalb, and Roland Mäusbacher
The Cryosphere, 15, 149–168, https://doi.org/10.5194/tc-15-149-2021, https://doi.org/10.5194/tc-15-149-2021, 2021
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This study presents insights into the remote cryosphere of a mountain range at the Tibetan Plateau. Small-scaled studies and field data about permafrost occurrence are very scarce. A multi-method approach (geomorphological mapping, geophysics, InSAR time series analysis) assesses the lower occurrence of permafrost the range of 5350 and 5500 m above sea level (a.s.l.) in the Qugaqie basin. The highest, multiannual creeping rates up to 150 mm/yr are observed on rock glaciers.
Ulrich Harms, Ulli Raschke, Flavio S. Anselmetti, Michael Strasser, Volker Wittig, Martin Wessels, Sebastian Schaller, Stefano C. Fabbri, Richard Niederreiter, and Antje Schwalb
Sci. Dril., 28, 29–41, https://doi.org/10.5194/sd-28-29-2020, https://doi.org/10.5194/sd-28-29-2020, 2020
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Hipercorig is a new modular lake sediment coring instrument based on a barge and a hydraulic corer system driven by a down-the-hole hammer. Hipercorig's performance was tested on the two periglacial lakes, namely Mondsee and Constance, located on the northern edge of the Alpine chain. Up to 63 m of Holocene lake sediments and older meltwater deposits from the last deglaciation were recovered for the first time.
Matías Frugone-Álvarez, Claudio Latorre, Fernando Barreiro-Lostres, Santiago Giralt, Ana Moreno, Josué Polanco-Martínez, Antonio Maldonado, María Laura Carrevedo, Patricia Bernárdez, Ricardo Prego, Antonio Delgado Huertas, Magdalena Fuentealba, and Blas Valero-Garcés
Clim. Past, 16, 1097–1125, https://doi.org/10.5194/cp-16-1097-2020, https://doi.org/10.5194/cp-16-1097-2020, 2020
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The manuscript identifies the main volcanic phases in the Laguna del Maule volcanic field and their impact in the lake basin through the late glacial and Holocene. We show that the bio-productivity and geochemical variabilities in the lake are related with climatic dynamics type ENSO, SPA and SWW and that the main phases are synchronous with the major regional climate changes on millennial timescales.
James M. Russell, Philip Barker, Andrew Cohen, Sarah Ivory, Ishmael Kimirei, Christine Lane, Melanie Leng, Neema Maganza, Michael McGlue, Emma Msaky, Anders Noren, Lisa Park Boush, Walter Salzburger, Christopher Scholz, Ralph Tiedemann, Shaidu Nuru, and the Lake Tanganyika Scientific Drilling Project (TSDP) Consortium
Sci. Dril., 27, 53–60, https://doi.org/10.5194/sd-27-53-2020, https://doi.org/10.5194/sd-27-53-2020, 2020
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Our planet experienced enormous environmental changes in the last 10 million years. Lake Tanganyika is the oldest lake in Africa and its sediments comprise the most continuous terrestrial environmental record for this time period in the tropics. This workshop report identifies key research objectives in rift processes, evolutionary biology, geomicrobiology, paleoclimatology, paleoecology, paleoanthropology, and geochronology that could be addressed by drilling this globally important site.
Sten Anslan, Mina Azizi Rad, Johannes Buckel, Paula Echeverria Galindo, Jinlei Kai, Wengang Kang, Laura Keys, Philipp Maurischat, Felix Nieberding, Eike Reinosch, Handuo Tang, Tuong Vi Tran, Yuyang Wang, and Antje Schwalb
Biogeosciences, 17, 1261–1279, https://doi.org/10.5194/bg-17-1261-2020, https://doi.org/10.5194/bg-17-1261-2020, 2020
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Due to the high elevation, the Tibetan Plateau (TP) is affected more strongly than the global average by climate warming. As a result of increasing air temperature, several environmental processes have accelerated, such as melting glaciers, thawing permafrost and grassland degradation. We review several modern and paleoenvironmental changes forced by climate warming in the lake system of Nam Co to shape our understanding of global warming effects on current and future geobiodiversity.
Sergio Cohuo, Laura Macario-González, Sebastian Wagner, Katrin Naumann, Paula Echeverría-Galindo, Liseth Pérez, Jason Curtis, Mark Brenner, and Antje Schwalb
Biogeosciences, 17, 145–161, https://doi.org/10.5194/bg-17-145-2020, https://doi.org/10.5194/bg-17-145-2020, 2020
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We evaluated how freshwater ostracode species responded to long-term and abrupt climate fluctuations during the last 155 kyr in the northern Neotropical region. We used fossil records and species distribution modelling. Fossil evidence suggests negligible effects of long-term climate variations on aquatic niche stability. Models suggest that abrupt climate fluctuation forced species to migrate south to Central America. Micro-refugia and meta-populations can explain survival of endemic species.
Ignacio A. Jara, Antonio Maldonado, Leticia González, Armand Hernández, Alberto Sáez, Santiago Giralt, Roberto Bao, and Blas Valero-Garcés
Clim. Past, 15, 1845–1859, https://doi.org/10.5194/cp-15-1845-2019, https://doi.org/10.5194/cp-15-1845-2019, 2019
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The South American summer monsoon (SASM) is the most important climate system of South America. However, little is known about its long-term variability. Here we present a new SASM reconstruction from Lago Chungará in the southern Altiplano (18°S). We show important changes in SASM precipitation at timescales of centuries. Our results suggest that SASM variability was controlled not only by tropical climates but was also influenced by precipitation outside the tropics.
Mikhail Y. Verbitsky, Michael E. Mann, Byron A. Steinman, and Dmitry M. Volobuev
Geosci. Model Dev., 12, 4053–4060, https://doi.org/10.5194/gmd-12-4053-2019, https://doi.org/10.5194/gmd-12-4053-2019, 2019
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In this study, we propose an additional climate model validation procedure that assesses whether causality signals between model drivers and responses are consistent with those observed in nature. Specifically, we suggest the method of conditional dispersion as the best approach to directly measure the causality between model forcing and response. Our results show that there is a strong causal signal from the carbon dioxide series to the global temperature series.
Florence Sylvestre, Mathieu Schuster, Hendrik Vogel, Moussa Abdheramane, Daniel Ariztegui, Ulrich Salzmann, Antje Schwalb, Nicolas Waldmann, and the ICDP CHADRILL Consortium
Sci. Dril., 24, 71–78, https://doi.org/10.5194/sd-24-71-2018, https://doi.org/10.5194/sd-24-71-2018, 2018
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CHADRILL aims to recover a sedimentary core spanning the Miocene–Pleistocene sediment succession of Lake Chad through deep drilling. This record will provide significant insights into the modulation of orbitally forced changes in northern African hydroclimate under different climate boundary conditions and the most continuous climatic and environmental record to be compared with hominid migrations across northern Africa and the implications for understanding human evolution.
Paul E. Olsen, John W. Geissman, Dennis V. Kent, George E. Gehrels, Roland Mundil, Randall B. Irmis, Christopher Lepre, Cornelia Rasmussen, Dominique Giesler, William G. Parker, Natalia Zakharova, Wolfram M. Kürschner, Charlotte Miller, Viktoria Baranyi, Morgan F. Schaller, Jessica H. Whiteside, Douglas Schnurrenberger, Anders Noren, Kristina Brady Shannon, Ryan O'Grady, Matthew W. Colbert, Jessie Maisano, David Edey, Sean T. Kinney, Roberto Molina-Garza, Gerhard H. Bachman, Jingeng Sha, and the CPCD team
Sci. Dril., 24, 15–40, https://doi.org/10.5194/sd-24-15-2018, https://doi.org/10.5194/sd-24-15-2018, 2018
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The Colorado Plateau Coring Project-1 recovered ~ 850 m of core in three holes at two sites in the Triassic fluvial strata of Petrified Forest National Park, AZ, USA. The cores have abundant zircon, U-Pb dateable layers (210–241 Ma) that along with magnetic polarity stratigraphy, validate the eastern US-based Newark-Hartford astrochronology and timescale, while also providing temporal and environmental context for the vast geological archives of the Triassic of western North America.
Robert Bussert, Horst Kämpf, Christina Flechsig, Katja Hesse, Tobias Nickschick, Qi Liu, Josefine Umlauft, Tomáš Vylita, Dirk Wagner, Thomas Wonik, Hortencia Estrella Flores, and Mashal Alawi
Sci. Dril., 23, 13–27, https://doi.org/10.5194/sd-23-13-2017, https://doi.org/10.5194/sd-23-13-2017, 2017
Bernd Wagner, Thomas Wilke, Alexander Francke, Christian Albrecht, Henrike Baumgarten, Adele Bertini, Nathalie Combourieu-Nebout, Aleksandra Cvetkoska, Michele D'Addabbo, Timme H. Donders, Kirstin Föller, Biagio Giaccio, Andon Grazhdani, Torsten Hauffe, Jens Holtvoeth, Sebastien Joannin, Elena Jovanovska, Janna Just, Katerina Kouli, Andreas Koutsodendris, Sebastian Krastel, Jack H. Lacey, Niklas Leicher, Melanie J. Leng, Zlatko Levkov, Katja Lindhorst, Alessia Masi, Anna M. Mercuri, Sebastien Nomade, Norbert Nowaczyk, Konstantinos Panagiotopoulos, Odile Peyron, Jane M. Reed, Eleonora Regattieri, Laura Sadori, Leonardo Sagnotti, Björn Stelbrink, Roberto Sulpizio, Slavica Tofilovska, Paola Torri, Hendrik Vogel, Thomas Wagner, Friederike Wagner-Cremer, George A. Wolff, Thomas Wonik, Giovanni Zanchetta, and Xiaosen S. Zhang
Biogeosciences, 14, 2033–2054, https://doi.org/10.5194/bg-14-2033-2017, https://doi.org/10.5194/bg-14-2033-2017, 2017
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Lake Ohrid is considered to be the oldest existing lake in Europe. Moreover, it has a very high degree of endemic biodiversity. During a drilling campaign at Lake Ohrid in 2013, a 569 m long sediment sequence was recovered from Lake Ohrid. The ongoing studies of this record provide first important information on the environmental and evolutionary history of the lake and the reasons for its high endimic biodiversity.
James M. Russell, Satria Bijaksana, Hendrik Vogel, Martin Melles, Jens Kallmeyer, Daniel Ariztegui, Sean Crowe, Silvia Fajar, Abdul Hafidz, Doug Haffner, Ascelina Hasberg, Sarah Ivory, Christopher Kelly, John King, Kartika Kirana, Marina Morlock, Anders Noren, Ryan O'Grady, Luis Ordonez, Janelle Stevenson, Thomas von Rintelen, Aurele Vuillemin, Ian Watkinson, Nigel Wattrus, Satrio Wicaksono, Thomas Wonik, Kohen Bauer, Alan Deino, André Friese, Cynthia Henny, Imran, Ristiyanti Marwoto, La Ode Ngkoimani, Sulung Nomosatryo, La Ode Safiuddin, Rachel Simister, and Gerald Tamuntuan
Sci. Dril., 21, 29–40, https://doi.org/10.5194/sd-21-29-2016, https://doi.org/10.5194/sd-21-29-2016, 2016
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The Towuti Drilling Project seeks to understand the long-term environmental and climatic history of the tropical western Pacific and to discover the unique microbes that live in metal-rich sediments. To accomplish these goals, in 2015 we carried out a scientific drilling project on Lake Towuti, located in central Indonesia. We recovered over 1000 m of core, and our deepest core extended 175 m below the lake floor and gives us a complete record of the lake.
A. Cohen, C. Campisano, R. Arrowsmith, A. Asrat, A. K. Behrensmeyer, A. Deino, C. Feibel, A. Hill, R. Johnson, J. Kingston, H. Lamb, T. Lowenstein, A. Noren, D. Olago, R. B. Owen, R. Potts, K. Reed, R. Renaut, F. Schäbitz, J.-J. Tiercelin, M. H. Trauth, J. Wynn, S. Ivory, K. Brady, R. O'Grady, J. Rodysill, J. Githiri, J. Russell, V. Foerster, R. Dommain, S. Rucina, D. Deocampo, J. Russell, A. Billingsley, C. Beck, G. Dorenbeck, L. Dullo, D. Feary, D. Garello, R. Gromig, T. Johnson, A. Junginger, M. Karanja, E. Kimburi, A. Mbuthia, T. McCartney, E. McNulty, V. Muiruri, E. Nambiro, E. W. Negash, D. Njagi, J. N. Wilson, N. Rabideaux, T. Raub, M. J. Sier, P. Smith, J. Urban, M. Warren, M. Yadeta, C. Yost, and B. Zinaye
Sci. Dril., 21, 1–16, https://doi.org/10.5194/sd-21-1-2016, https://doi.org/10.5194/sd-21-1-2016, 2016
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An initial description of the scientific rationale, drilling and core handling, and initial core description activities of the Hominin Sites and Paleolakes Drilling Project (HSPDP). HSPDP is a large international consortium whose objective is to collect cores from lakebeds in proximity to important fossil early human fossil sites in eastern Africa, to better understand the environmental and climatic context of human evolution.
P. A. Baker, S. C. Fritz, C. G. Silva, C. A. Rigsby, M. L. Absy, R. P. Almeida, M. Caputo, C. M. Chiessi, F. W. Cruz, C. W. Dick, S. J. Feakins, J. Figueiredo, K. H. Freeman, C. Hoorn, C. Jaramillo, A. K. Kern, E. M. Latrubesse, M. P. Ledru, A. Marzoli, A. Myrbo, A. Noren, W. E. Piller, M. I. F. Ramos, C. C. Ribas, R. Trnadade, A. J. West, I. Wahnfried, and D. A. Willard
Sci. Dril., 20, 41–49, https://doi.org/10.5194/sd-20-41-2015, https://doi.org/10.5194/sd-20-41-2015, 2015
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We report on a planned Trans-Amazon Drilling Project (TADP) that will continuously sample Late Cretaceous to modern sediment in a transect along the equatorial Amazon of Brazil, from the Andean foreland to the Atlantic Ocean. The TADP will document the evolution of the Neotropical forest and will link biotic diversification to changes in the physical environment, including climate, tectonism, and landscape. We will also sample the ca. 200Ma basaltic sills that underlie much of the Amazon.
S. Jasechko, A. Lechler, F. S. R. Pausata, P. J. Fawcett, T. Gleeson, D. I. Cendón, J. Galewsky, A. N. LeGrande, C. Risi, Z. D. Sharp, J. M. Welker, M. Werner, and K. Yoshimura
Clim. Past, 11, 1375–1393, https://doi.org/10.5194/cp-11-1375-2015, https://doi.org/10.5194/cp-11-1375-2015, 2015
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In this study we compile global isotope proxy records of climate changes from the last ice age to the late-Holocene preserved in cave calcite, glacial ice and groundwater aquifers. We show that global patterns of late-Pleistocene to late-Holocene precipitation isotope shifts are consistent with stronger-than-modern isotopic distillation of air masses during the last ice age, likely impacted by larger global temperature differences between the tropics and the poles.
W. C. Clyde, P. D. Gingerich, S. L. Wing, U. Röhl, T. Westerhold, G. Bowen, K. Johnson, A. A. Baczynski, A. Diefendorf, F. McInerney, D. Schnurrenberger, A. Noren, K. Brady, and the BBCP Science Team
Sci. Dril., 16, 21–31, https://doi.org/10.5194/sd-16-21-2013, https://doi.org/10.5194/sd-16-21-2013, 2013
Related subject area
Location/Setting: Continental | Subject: Other research disciplines | Geoprocesses: Global climate change
Scientific drilling of sediments at Darwin Crater, Tasmania
Why deep drilling in the Colônia Basin (Brazil)?
Agathe Lisé-Pronovost, Michael-Shawn Fletcher, Tom Mallett, Michela Mariani, Richard Lewis, Patricia S. Gadd, Andy I. R. Herries, Maarten Blaauw, Hendrik Heijnis, Dominic A. Hodgson, and Joel B. Pedro
Sci. Dril., 25, 1–14, https://doi.org/10.5194/sd-25-1-2019, https://doi.org/10.5194/sd-25-1-2019, 2019
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We present the first results from scientific drilling at Darwin Crater, a 816 000-year-old meteorite impact crater in Tasmania. The aim was to recover lacustrine sediments in the crater to reconstruct paleoclimate and bridge a time gap in understanding climate change in mid-latitude Australia. The multi-proxy dataset provides clear signatures of alternating glacial and interglacial lithologies, promising for investigating the role of the Southern Hemisphere westerly winds in Pleistocene climate.
M.-P. Ledru, W. U. Reimold, D. Ariztegui, E. Bard, A. P. Crósta, C. Riccomini, and A. O. Sawakuchi
Sci. Dril., 20, 33–39, https://doi.org/10.5194/sd-20-33-2015, https://doi.org/10.5194/sd-20-33-2015, 2015
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Short summary
MexiDrill, the Basin of Mexico Drilling Program, recovered a continuous, high-resolution 400 000 year record of tropical North American environmental change. The field location, in the densely populated, water-stressed, Mexico City region, gives this record particular societal relevance. The record also contains a rich record of volcanic activity; knowledge of the history of the area's explosive volcanic eruptions will improve capacity for risk assessment of future activity.
MexiDrill, the Basin of Mexico Drilling Program, recovered a continuous, high-resolution 400 000...
