Articles | Volume 17, issue 5
https://doi.org/10.5194/cp-17-1955-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-17-1955-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
29 Sep 2021
Research article |
| 29 Sep 2021
| 29 Sep 2021
Palaeo-environmental evolution of Central Asia during the Cenozoic: new insights from the continental sedimentary archive of the Valley of Lakes (Mongolia)
Institute of Applied Geosciences, Graz University of Technology, NAWI
Graz Geocenter, Graz, Austria
Oliver Wasser
Institute of Applied Geosciences, Graz University of Technology, NAWI
Graz Geocenter, Graz, Austria
Elshan Abdullayev
Department of Life Sciences, Khazar University, Baku, Azerbaijan
Department of Geoscience, French-Azerbaijani University (UFAZ), Baku,
Azerbaijan
Stefano Bernasconi
Geological Institute, ETH Zurich, Zurich, Switzerland
Stefan Löhr
Department of Earth and Environmental Sciences, Macquarie University,
Sydney, Australia
Klaus Wemmer
Geoscience Centre (GZG), University of Göttingen, Göttingen,
Germany
Werner E. Piller
Institute of Earth Sciences, University of Graz, NAWI Graz Geocenter,
Graz, Austria
Maxim Rudmin
Division of Geology, Tomsk Polytechnic University, Tomsk, Russia
Sylvain Richoz
Department of Geology, University of Lund, Lund, Sweden
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Arianna V. Del Gaudio, Aaron Avery, Gerald Auer, Werner E. Piller, and Walter Kurz
Clim. Past, 20, 2237–2266, https://doi.org/10.5194/cp-20-2237-2024, https://doi.org/10.5194/cp-20-2237-2024, 2024
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The Benguela Upwelling System is a region in the SE Atlantic Ocean of high biological productivity. It comprises several water masses such as the Benguela Current, South Atlantic Central Water, and Indian Ocean Agulhas waters. We analyzed planktonic foraminifera from IODP Sites U1575 and U1576 to characterize water masses and their interplay in the Pleistocene. This defined changes in the local thermocline, which were linked to long-term Benguela Niño- and Niña-like and deglaciation events.
Alexander J. Clark, Ismael Torres-Romero, Madalina Jaggi, Stefano M. Bernasconi, and Heather M. Stoll
Clim. Past, 20, 2081–2101, https://doi.org/10.5194/cp-20-2081-2024, https://doi.org/10.5194/cp-20-2081-2024, 2024
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Coccoliths are abundant in sediments across the world’s oceans, yet it is difficult to apply traditional carbon or oxygen isotope methodologies for temperature reconstructions. We show that our coccolith clumped isotope temperature calibration with well-constrained temperatures systematically differs from inorganic carbonate calibrations. We suggest the use of our well-constrained calibration for future coccolith carbonate temperature reconstructions.
Mathias Harzhauser, Oleg Mandic, and Werner E. Piller
Biogeosciences, 20, 4775–4794, https://doi.org/10.5194/bg-20-4775-2023, https://doi.org/10.5194/bg-20-4775-2023, 2023
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Bowl-shaped spirorbid microbialite bioherms formed during the late Middle Miocene (Sarmatian) in the central Paratethys Sea under a warm, arid climate. The microbialites and the surrounding sediment document a predominance of microbial activity in the shallow marine environments of the sea at that time. Modern microbialites are not analogues for these unique structures, which reflect a series of growth stages with an initial “start-up stage”, massive “keep-up stage” and termination of growth.
Gerald Auer, Or M. Bialik, Mary-Elizabeth Antoulas, Noam Vogt-Vincent, and Werner E. Piller
Clim. Past, 19, 2313–2340, https://doi.org/10.5194/cp-19-2313-2023, https://doi.org/10.5194/cp-19-2313-2023, 2023
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We provided novel insights into the behaviour of a major upwelling cell between 15 and 8.5 million years ago. To study changing conditions, we apply a combination of geochemical and paleoecological parameters to characterize the nutrient availability and subsequent utilization by planktonic primary producers. These changes we then juxtapose with established records of contemporary monsoon wind intensification and changing high-latitude processes to explain shifts in the plankton community.
Jasmine S. Berg, Paula C. Rodriguez, Cara Magnabosco, Longhui Deng, Stefano M. Bernasconi, Hendrik Vogel, Marina Morlock, and Mark A. Lever
EGUsphere, https://doi.org/10.5194/egusphere-2023-2102, https://doi.org/10.5194/egusphere-2023-2102, 2023
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The addition of sulfur to organic matter is generally thought to protect it from microbial degradation. We analyzed buried sulfur compounds in a 10-m sediment core representing the entire ~13,500 year history of an alpine lake. Surprisingly, organic sulfur and pyrite formed very rapidly and were characterized by very light isotope signatures that suggest active microbial sulfur cycling in the deep subsurface.
Cinthya Esther Nava Fernandez, Tobias Braun, Bethany Fox, Adam Hartland, Ola Kwiecien, Chelsea Pederson, Sebastian Hoepker, Stefano Bernasconi, Madalina Jaggi, John Hellstrom, Fernando Gázquez, Amanda French, Norbert Marwan, Adrian Immenhauser, and Sebastian Franz Martin Breitenbach
Clim. Past Discuss., https://doi.org/10.5194/cp-2021-172, https://doi.org/10.5194/cp-2021-172, 2022
Manuscript not accepted for further review
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We provide a ca. 1000 year long (6.4–5.4 ka BP) stalagmite-based reconstruction of mid-Holocene rainfall variability in the tropical western Pacific. The annually laminated multi-proxy (δ13C, δ18O, X/Ca, gray values) record comes from Niue island and informs on El Nino-Southern Oscillation and South Pacific Convergence Zone dynamics. Our data suggest that ENSO was active and influenced rainfall seasonality over the covered time interval. Rainfall seasonality was subdued during active ENSO phases
Luca Smeraglia, Nathan Looser, Olivier Fabbri, Flavien Choulet, Marcel Guillong, and Stefano M. Bernasconi
Solid Earth, 12, 2539–2551, https://doi.org/10.5194/se-12-2539-2021, https://doi.org/10.5194/se-12-2539-2021, 2021
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In this paper, we dated fault movements at geological timescales which uplifted the sedimentary successions of the Jura Mountains from below the sea level up to Earth's surface. To do so, we applied the novel technique of U–Pb geochronology on calcite mineralizations that precipitated on fault surfaces during times of tectonic activity. Our results document a time frame of the tectonic evolution of the Jura Mountains and provide new insight into the broad geological history of the Western Alps.
Thomas J. Leutert, Sevasti Modestou, Stefano M. Bernasconi, and A. Nele Meckler
Clim. Past, 17, 2255–2271, https://doi.org/10.5194/cp-17-2255-2021, https://doi.org/10.5194/cp-17-2255-2021, 2021
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The Miocene climatic optimum associated with high atmospheric CO2 levels (~17–14 Ma) was followed by a period of dramatic climate change. We present a clumped isotope-based bottom-water temperature record from the Southern Ocean covering this key climate transition. Our record reveals warm conditions and a substantial cooling preceding the main ice volume increase, possibly caused by thresholds involved in ice growth and/or regional effects at our study site.
Annika Fiskal, Eva Anthamatten, Longhui Deng, Xingguo Han, Lorenzo Lagostina, Anja Michel, Rong Zhu, Nathalie Dubois, Carsten J. Schubert, Stefano M. Bernasconi, and Mark A. Lever
Biogeosciences, 18, 4369–4388, https://doi.org/10.5194/bg-18-4369-2021, https://doi.org/10.5194/bg-18-4369-2021, 2021
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Microbially produced methane can serve as a carbon source for freshwater macrofauna most likely through grazing on methane-oxidizing bacteria. This study investigates the contributions of different carbon sources to macrofaunal biomass. Our data suggest that the average contribution of methane-derived carbon is similar between different fauna but overall remains low. This is further supported by the low abundance of methane-cycling microorganisms.
Alba Zappone, Antonio Pio Rinaldi, Melchior Grab, Quinn C. Wenning, Clément Roques, Claudio Madonna, Anne C. Obermann, Stefano M. Bernasconi, Matthias S. Brennwald, Rolf Kipfer, Florian Soom, Paul Cook, Yves Guglielmi, Christophe Nussbaum, Domenico Giardini, Marco Mazzotti, and Stefan Wiemer
Solid Earth, 12, 319–343, https://doi.org/10.5194/se-12-319-2021, https://doi.org/10.5194/se-12-319-2021, 2021
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The success of the geological storage of carbon dioxide is linked to the availability at depth of a capable reservoir and an impermeable caprock. The sealing capacity of the caprock is a key parameter for long-term CO2 containment. Faults crosscutting the caprock might represent preferential pathways for CO2 to escape. A decameter-scale experiment on injection in a fault, monitored by an integrated network of multiparamerter sensors, sheds light on the mobility of fluids within the fault.
Annika Fiskal, Longhui Deng, Anja Michel, Philip Eickenbusch, Xingguo Han, Lorenzo Lagostina, Rong Zhu, Michael Sander, Martin H. Schroth, Stefano M. Bernasconi, Nathalie Dubois, and Mark A. Lever
Biogeosciences, 16, 3725–3746, https://doi.org/10.5194/bg-16-3725-2019, https://doi.org/10.5194/bg-16-3725-2019, 2019
Maria Andrianaki, Juna Shrestha, Florian Kobierska, Nikolaos P. Nikolaidis, and Stefano M. Bernasconi
Hydrol. Earth Syst. Sci., 23, 3219–3232, https://doi.org/10.5194/hess-23-3219-2019, https://doi.org/10.5194/hess-23-3219-2019, 2019
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We tested the performance of the SWAT hydrological model after being transferred from a small Alpine watershed to a greater area. We found that the performance of the model for the greater catchment was satisfactory and the climate change simulations gave insights into the impact of climate change on our site. Assessment tests are important in identifying the strengths and weaknesses of the models when they are applied under extreme conditions different to the ones that were calibrated.
Maximilian Rieder, Wencke Wegner, Monika Horschinegg, Stefanie Klackl, Nereo Preto, Anna Breda, Susanne Gier, Urs Klötzli, Stefano M. Bernasconi, Gernot Arp, and Patrick Meister
Solid Earth, 10, 1243–1267, https://doi.org/10.5194/se-10-1243-2019, https://doi.org/10.5194/se-10-1243-2019, 2019
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The formation of dolomite (CaMg(CO3)2), an abundant mineral in Earth's geological record, is still incompletely understood. We studied dolomites embedded in a 100 m thick succession of coastal alluvial clays of Triassic age in the southern Alps. Observation by light microscopy and Sr isotopes suggests that dolomites may spontaneously from concentrated evaporating seawater, in coastal ephemeral lakes or tidal flats along the western margin of the Triassic Tethys sea.
Claudia Wrozyna, Thomas A. Neubauer, Juliane Meyer, Maria Ines F. Ramos, and Werner E. Piller
Biogeosciences, 15, 5489–5502, https://doi.org/10.5194/bg-15-5489-2018, https://doi.org/10.5194/bg-15-5489-2018, 2018
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How environmental change affects a species' phenotype is crucial for taxonomy and biodiversity assessments and for their application as paleoecological indicators. Morphometric data of a Neotropical ostracod species, as well as several climatic and hydrochemical variables, were used to investigate the link between morphology and environmental conditions. Temperature seasonality, annual precipitation, and chloride and sulphate concentrations were identified as drivers for ostracod ecophenotypy.
Jean-Baptiste P. Koehl, Steffen G. Bergh, and Klaus Wemmer
Solid Earth, 9, 923–951, https://doi.org/10.5194/se-9-923-2018, https://doi.org/10.5194/se-9-923-2018, 2018
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We dated the formation of large faults in order to constrain the tectonic and exhumation history of the Barents Sea and northern Norway. Some of the dated faults formed apprx. 1 Ga and are much older than expected. However, most dated faults were active during two periods of extension: 375–325 and 315–265 Ma. The study of minerals along these cracks shows that exposed rocks in Finnmark were exhumed from deep (> 10 km) to shallow depth (< 3.5 km) during the two periods of extension.
Ángela García-Gallardo, Patrick Grunert, and Werner E. Piller
Clim. Past, 14, 339–350, https://doi.org/10.5194/cp-14-339-2018, https://doi.org/10.5194/cp-14-339-2018, 2018
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We study the variability in Mediterranean–Atlantic exchange, focusing on the surface Atlantic inflow across the mid-Pliocene warm period and the onset of the Northern Hemisphere glaciation, still unresolved by previous works. Oxygen isotope gradients between both sides of the Strait of Gibraltar reveal weak inflow during warm periods that turns stronger during severe glacials and the start of a negative feedback between exchange at the Strait and the Atlantic Meridional Overturning Circulation.
Juliane Meyer, Claudia Wrozyna, Albrecht Leis, and Werner E. Piller
Biogeosciences, 14, 4927–4947, https://doi.org/10.5194/bg-14-4927-2017, https://doi.org/10.5194/bg-14-4927-2017, 2017
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Isotopic signatures of ostracods from Florida correlate with their host water, implying a regional influence of temperature and precipitation. Calculated monthly configurations of a theoretical calcite formed in rivers were compared to ostracod isotope compositions. The data suggest a seasonal shell formation during early spring that is coupled to the hydrological cycle of the region. The surprising seasonality of the investigated ostracods is of importance for paleontological interpretation.
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.
F. Kobierska, T. Jonas, J. W. Kirchner, and S. M. Bernasconi
Hydrol. Earth Syst. Sci., 19, 3681–3693, https://doi.org/10.5194/hess-19-3681-2015, https://doi.org/10.5194/hess-19-3681-2015, 2015
C. von Sperber, F. Tamburini, B. Brunner, S. M. Bernasconi, and E. Frossard
Biogeosciences, 12, 4175–4184, https://doi.org/10.5194/bg-12-4175-2015, https://doi.org/10.5194/bg-12-4175-2015, 2015
G. Auer, W. E. Piller, and M. Harzhauser
Clim. Past, 11, 283–303, https://doi.org/10.5194/cp-11-283-2015, https://doi.org/10.5194/cp-11-283-2015, 2015
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High-resolution analyses of paleoecological and geochemical proxies give insight into environmental processes and climate variations in the past on a timescale that is relevant for humans. This study, as the first of its kind, aims to resolve cyclic variations of nannofossil assemblages on a decadal to centennial scale in a highly sensitive Early Miocene (~17Ma) shallow marine setting. Our results indicate that solar variation played a major role in shaping short-term climate variability.
M. Harzhauser, O. Mandic, A. K. Kern, W. E. Piller, T. A. Neubauer, C. Albrecht, and T. Wilke
Biogeosciences, 10, 8423–8431, https://doi.org/10.5194/bg-10-8423-2013, https://doi.org/10.5194/bg-10-8423-2013, 2013
M. Reuter, W. E. Piller, M. Harzhauser, and A. Kroh
Clim. Past, 9, 2101–2115, https://doi.org/10.5194/cp-9-2101-2013, https://doi.org/10.5194/cp-9-2101-2013, 2013
Related subject area
Subject: Continental Surface Processes | Archive: Terrestrial Archives | Timescale: Cenozoic
Climatic and tectonic controls on shallow marine and freshwater diatomite deposition through the Palaeogene
Middle Eocene Climatic Optimum (MECO) and its imprint in the continental Escanilla Formation, Spain
Fluvio-deltaic record of increased sediment transport during the Middle Eocene Climatic Optimum (MECO), Southern Pyrenees, Spain
Terrestrial carbon isotope stratigraphy and mammal turnover during post-PETM hyperthermals in the Bighorn Basin, Wyoming, USA
Climate and ecology in the Rocky Mountain interior after the early Eocene Climatic Optimum
Terrestrial responses of low-latitude Asia to the Eocene–Oligocene climate transition revealed by integrated chronostratigraphy
Mammal faunal change in the zone of the Paleogene hyperthermals ETM2 and H2
Pliocene to Pleistocene climate and environmental history of Lake El'gygytgyn, Far East Russian Arctic, based on high-resolution inorganic geochemistry data
A re-evaluation of the palaeoclimatic significance of phosphorus variability in speleothems revealed by high-resolution synchrotron micro XRF mapping
Cécile Figus, Or M. Bialik, Andrey Yu. Gladenkov, Tatyana V. Oreshkina, Johan Renaudie, Pavel Smirnov, and Jakub Witkowski
EGUsphere, https://doi.org/10.5194/egusphere-2024-2229, https://doi.org/10.5194/egusphere-2024-2229, 2024
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Global scale compilation of Palaeogene diatomite occurrences reveals the impact of palaeogeographic and palaeoceanographic changes on diatom accumulation, particularly in the middle Eocene: diatomite deposition dropped in epicontinental seas between ~46 and ~43 Ma, while diatoms began to accumulate from ~43.5 Ma in open ocean settings. The compilation also shows the indirect correlation between Palaeogene climate fluctuations & diatomite deposition in shallow marine and freshwater environments.
Nikhil Sharma, Jorge E. Spangenberg, Thierry Adatte, Torsten Vennemann, László Kocsis, Jean Vérité, Luis Valero, and Sébastien Castelltort
Clim. Past, 20, 935–949, https://doi.org/10.5194/cp-20-935-2024, https://doi.org/10.5194/cp-20-935-2024, 2024
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The Middle Eocene Climatic Optimum (MECO) is an enigmatic global warming event with scarce terrestrial records. To contribute, this study presents a new comprehensive geochemical record of the MECO in the fluvial Escanilla Formation, Spain. In addition to identifying the regional preservation of the MECO, results demonstrate continental sedimentary successions, as key archives of past climate and stable isotopes, to be a powerful tool in correlating difficult-to-date fluvial successions.
Sabí Peris Cabré, Luis Valero, Jorge E. Spangenberg, Andreu Vinyoles, Jean Verité, Thierry Adatte, Maxime Tremblin, Stephen Watkins, Nikhil Sharma, Miguel Garcés, Cai Puigdefàbregas, and Sébastien Castelltort
Clim. Past, 19, 533–554, https://doi.org/10.5194/cp-19-533-2023, https://doi.org/10.5194/cp-19-533-2023, 2023
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The Middle Eocene Climatic Optimum (MECO) was a global warming event that took place 40 Myr ago and lasted ca. 500 kyr, inducing physical, chemical, and biotic changes on the Earth. We use stable isotopes to identify the MECO in the Eocene deltaic deposits of the Southern Pyrenees. Our findings reveal enhanced deltaic progradation during the MECO, pointing to the important impact of global warming on fluvial sediment transport with implications for the consequences of current climate change.
Sarah J. Widlansky, Ross Secord, Kathryn E. Snell, Amy E. Chew, and William C. Clyde
Clim. Past, 18, 681–712, https://doi.org/10.5194/cp-18-681-2022, https://doi.org/10.5194/cp-18-681-2022, 2022
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New stable isotope records from pedogenic carbonates through the ETM2, H2, and possibly I1 hyperthermals from the Bighorn Basin highlight significant spatial variability in the preservation and magnitude of these global climate events in paleosol records. These data also provide important climate context for the extensive early Eocene mammal fossil record from the southern Bighorn Basin and support previous hypotheses that pulses in mammal turnover corresponded to the ETM2 and H2 hyperthermals.
Rebekah A. Stein, Nathan D. Sheldon, Sarah E. Allen, Michael E. Smith, Rebecca M. Dzombak, and Brian R. Jicha
Clim. Past, 17, 2515–2536, https://doi.org/10.5194/cp-17-2515-2021, https://doi.org/10.5194/cp-17-2515-2021, 2021
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Modern climate change drives us to look to the past to understand how well prior life adapted to warm periods. In the early Eocene, a warm period approximately 50 million years ago, southwestern Wyoming was covered by a giant lake. This lake and surrounding environments made for excellent preservation of ancient soils, plant fossils, and more. Using geochemical tools and plant fossils, we determine the region was a warm, wet forest and that elevated temperatures were maintained by volcanoes.
Y. X. Li, W. J. Jiao, Z. H. Liu, J. H. Jin, D. H. Wang, Y. X. He, and C. Quan
Clim. Past, 12, 255–272, https://doi.org/10.5194/cp-12-255-2016, https://doi.org/10.5194/cp-12-255-2016, 2016
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An integrated litho-, bio-, cyclo-, and magnetostratigraphy constrains the onset of a depositional environmental change from a lacustrine to a deltaic environment in the Maoming Basin, China, at 33.88 Ma. This coincides with the global cooling during the Eocene-Oligocene transition (EOT) at ~ 33.7–33.9 Ma. This change represents terrestrial responses of low-latitude Asia to the EOT. The greatly refined chronology permits detailed examination of the late Paleogene climate change in southeast Asia.
A. E. Chew
Clim. Past, 11, 1223–1237, https://doi.org/10.5194/cp-11-1223-2015, https://doi.org/10.5194/cp-11-1223-2015, 2015
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This project describes mammal faunal response in the zone of the ETM2 and H2 hyperthermals (rapid global warming events) of the early Paleogene in the south-central Bighorn Basin, WY. The response includes changes in faunal structure and species relative body size. Comparative analysis suggests that environmental moisture and rate of change are important moderators of response.
V. Wennrich, P. S. Minyuk, V. Borkhodoev, A. Francke, B. Ritter, N. R. Nowaczyk, M. A. Sauerbrey, J. Brigham-Grette, and M. Melles
Clim. Past, 10, 1381–1399, https://doi.org/10.5194/cp-10-1381-2014, https://doi.org/10.5194/cp-10-1381-2014, 2014
S. Frisia, A. Borsato, R. N. Drysdale, B. Paul, A. Greig, and M. Cotte
Clim. Past, 8, 2039–2051, https://doi.org/10.5194/cp-8-2039-2012, https://doi.org/10.5194/cp-8-2039-2012, 2012
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Short summary
We identified the provenance, (post)depositional history, weathering conditions and hydroclimate that formed the detrital and authigenic silicates and soil carbonates of the Valley of Lakes sediments in Central Asia during the Cenozoic (~34 to 21 Ma). Aridification pulses in continental Central Asia coincide with marine glaciation events and are caused by Cenozoic climate forcing and the exhumation of the Tian Shan, Hangay and Altai mountains, which reduced the moisture influx by westerly winds.
We identified the provenance, (post)depositional history, weathering conditions and hydroclimate...
