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Enhanced hydrological cycling and continental weathering during the Jenkyns Event in a lake system in the Sichuan Basin, China Glob. Planet. Change (IF 4.956) Pub Date : 2022-08-13 Renping Liu, Guang Hu, Jian Cao, Ruofei Yang, Zhiwei Liao, Chaowei Hu, Qian Pang, Peng Pang
Knowledge of past hydrological cycling and continental weathering under greenhouse climate conditions helps understand extreme climatic events that are currently occurring. Previous studies of marine strata have reported enhanced hydrological cycling and continental weathering during the Jenkyns Event (JE, also known as the Toarcian Oceanic Anoxic Event; ca. 183 Ma). We undertook a sedimentological
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Improving paleoenvironment in North China aided Triassic biotic recovery on land following the end-Permian mass extinction Glob. Planet. Change (IF 4.956) Pub Date : 2022-08-08 Zhicai Zhu, Yongqing Liu, Hongwei Kuang, Andrew J. Newell, Nan Peng, Mingming Cui, Michael J. Benton
The driver of the Early–Middle Triassic biotic recovery on land following the end-Permian crisis is puzzling. Here, we show the biotic recovery was gradual and spanned up to 8 Myr after the end-Permian mass extinction, based on continuous, well-dated sections over large areas in the northeastern Ordos Basin, North China. Initial recovery began in the Olenekian, marked by the disappearance of microbially
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Mid-latitude precipitation in East Asia influenced by a fluctuating greenhouse climate during the latest Cretaceous through the earliest Paleogene Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-29 Jiquan Chen, Yuan Gao, Daniel E. Ibarra, Jianming Qin, Chengshan Wang
Deep-time records from greenhouse climate periods (e.g., the Late Cretaceous) provide a reference point for understanding how high atmospheric CO2 concentrations influence precipitation in the mid-latitude Northern Hemisphere (e.g., East Asia). In this study, we quantitatively reconstruct mean annual precipitation (MAP) in East Asia during the latest Cretaceous through the earliest Paleogene (~76–65
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Cretaceous paleomagnetic and detrital zircon UPb geochronological results from the Tethyan Himalaya: Constraints on the Neo-Tethys evolution Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-31 Weiwei Bian, Tianshui Yang, Suo Wang, Wenxiao Peng, Shihong Zhang, Huaichun Wu, Haiyan Li, Pan Zhao
The evolution of the Neo-Tethys Ocean had a profound effect on global climate change and the evolution of life. To better constrain the Cretaceous paleogeographic position of the Tethyan Himalaya and evolution of the Neo-Tethys Ocean, combined paleomagnetic and detrital zircon UPb geochronological research was performed on samples from the Gyabula Formation, constrained at ca. 117.7–94.4 Ma, in the
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Organic geochemistry evidence for wildfire and elevated pO2 at the Frasnian–Famennian boundary Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-31 Zeyang Liu, Hui Tian, David Selby, Jianfang Hu, D. Jeffrey Over
The Devonian experienced radiations of plants and animals, as well as a major mass extinction event during the Frasnian–Famennian (FF) interval. Proposed triggers have been linked to volcanism, extraterrestrial impact, sea-level fluctuations, and climate cooling, etc. However, the nature of the wildfires and its role in the biotic evolution have been rarely investigated for the FF interval. Here, we
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Relative sea-level change in South Florida during the past ~5 years Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-30 Nicole S. Khan, Erica Ashe, Ryan P. Moyer, Andrew C. Kemp, Simon E. Engelhart, Matthew J. Brain, Lauren T. Toth, Amanda Chappel, Margaret Christie, Robert E. Kopp, Benjamin P. Horton
A paucity of detailed relative sea-level (RSL) reconstructions from low latitudes hinders efforts to understand the global, regional, and local processes that cause RSL change. We reconstruct RSL change during the past ~5 ka using cores of mangrove peat at two sites (Snipe Key and Swan Key) in the Florida Keys. Remote sensing and field surveys established the relationship between peat-forming mangroves
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Pleistocene oceanographic variability in the Ross Sea: A multiproxy approach to age model development and paleoenvironmental analyses Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-31 Michael Bollen, Christina R. Riesselman, Christian Ohneiser, Olga Albot, Robert McKay, Min Kyung Lee, Kyu-Cheul Yoo, Sunghan Kim, Jae Il Lee, Richard Levy
Understanding how ocean circulation has varied around Antarctica in the past is vital because significant volumes of ice are grounded below sea level, and therefore ice sheet variations are strongly coupled with oceanographic variability at the continental shelf margin. This study investigates the 11.75 m sediment core RS15-LC42, retrieved from the Central Basin of the Ross Sea. A magneto-biostratigraphic
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Role of solar activity and Pacific decadal oscillation in the hydroclimatic patterns of eastern China over the past millennium Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-31 Liang Zhang, Maowei Wu, Jingyun Zheng, Zhixin Hao
The hydroclimatic patterns in eastern China (EC) over the past millennium, both influenced by solar activity and Pacific decadal oscillation (PDO), are presented based on the climatic reconstructions and simulations. For strong solar activity, a consistent pattern exists where drought appears in the majority of EC initialized from the cold PDO phase, which is related to less moisture caused by the
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Increasing primary productivity in the oligotrophic Tethyan coastal ocean during the Paleocene-Eocene warming episode Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-28 Sruthi P. Sreenivasan, Arpita Samanta, Marcelle BouDagher-Fadel, Shreya Mukherjee, Ravikant Vadlamani, Melinda Kumar Bera
The coastal upwelling zones, occupying only ~0.5% of the global ocean, account for ~10% of the global primary productivity. The CO2 fixation by primary producers amplifies in the upwelling zones during global warming due to the higher nutrient supply. Based on the presumption that the nutrient-deficient coastal ocean is less productive, the state of the oligotrophic coastal ocean is often neglected
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Two cosmopolitanism events driven by different extreme paleoclimate regimes Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-28 Shu-han Zhang, Shu-zhong Shen, Douglas H. Erwin
Cosmopolitanism represents the formation of globally homogenous biotas, usually of low-diversity, and normally form under unusual environmental conditions. But the factors driving such important biogeographic states remain unclear. The Carboniferous to Triassic encompasses the Late Paleozoic Ice Age (LPIA) and a hothouse beginning in the latest Permian and persisting through the Early Triassic. These
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Late Cretaceous–Early Cenozoic exhumation across the Yalong thrust belt in eastern Tibet and its implications for outward plateau growth Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-22 Yaling Tao, Huiping Zhang, Jiawei Zhang, Jianzhang Pang, Ying Wang, Ying Wu, Xudong Zhao, Feipeng Huang, Zifa Ma
Rapid denudation and uplift of eastern Tibet have accelerated during the Late Miocene due to lateral lower crustal flow, without a significant contribution from upper crustal shortening. However, growing lines of evidence have revealed that Early Cenozoic faulting controlled enhanced denudation and shortening. Here, we report 51 new zircon and apatite (UTh)/He and apatite fission-track ages from seven
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Orbital eccentricity and inclination metronomes in Middle Miocene lacustrine mudstones of Jiuxi Basin, Tibet: Closing an astrochronology time gap and calibrating global cooling events Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-19 Xu Yao, Shuang Dai, Mingsong Li, Linda Hinnov
Reconstructing Cenozoic lacustrine astrochronology is essential for understanding climatic and environmental change around northeastern Tibetan Plateau. Existing models attribute the driving mechanism of regional precipitation and aridification to the Tibetan Plateau uplift and global climate change. However, in northeastern Tibet lacustrine astrochronology has a gap from 17 Ma to 14 Ma. To bridge
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Detailed luminescence dating of dust mass accumulation rates over the last two glacial-interglacial cycles from the Irig loess-palaeosol sequence, Carpathian Basin Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-16 Zoran M. Perić, Thomas Stevens, Igor Obreht, Ulrich Hambach, Frank Lehmkuhl, Slobodan B. Marković
Mineral dust records distant from dust sources are crucial in establishing wider atmospheric dust loads in the past. However, detailed, independent chronologies for loess-palaeosol sequences distant from local dust sources are still rare in Europe. In this study we present a high-resolution OSL and pIRIR290 chronology and multi-proxy investigation of the Irig loess-palaeosol sequence (LPS), Vojvodina
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Name and scale matter: Clarifying the geography of Tibetan Plateau and adjacent mountain regions Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-12 Jie Liu, Richard I. Milne, Guang-Fu Zhu, Robert A. Spicer, Moses C. Wambulwa, Zeng-Yuan Wu, David E. Boufford, Ya-Huang Luo, Jim Provan, Ting-Shuang Yi, Jie Cai, Hong Wang, Lian-Ming Gao, De-Zhu Li
Geographical names and the entities they represent act as a fundamental cornerstone across numerous disciplines. However, inconsistent geographical names and arbitrarily defined regional geographical scales are common, hindering cross-disciplinary communication and synthesis. The Pan-Tibetan Highlands, comprising the Tibetan Plateau, Himalaya, Hengduan Mountains and Mountains of Central Asia, is a
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Heightened storm activity drives late Holocene reef island formation in the central Pacific Ocean Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-09 Paul S. Kench, Murray R. Ford, James F. Bramante, Andrew D. Ashton, Jeffrey P. Donnelly, Richard M. Sullivan, Michael R. Toomey
The impact of global environmental change on coral reef islands is uncertain, with few studies having resolved the critical controls on island formation and change. Based on detailed, topographic surveys, sediment analysis and radiometric dating, we present a multi-phase model of the formation of two reef islands in Jaluit atoll, Republic of the Marshall Islands. The initial phase of island building
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Warmer western tropical South Atlantic during the Last Interglacial relative to the current interglacial period Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-09 R.A. Nascimento, M.H. Shimizu, I.M. Venancio, C.M. Chiessi, H. Kuhnert, H. Johnstone, A. Govin, D. Lessa, J.M. Ballalai, P. Piacsek, S. Mulitza, A.L.S. Albuquerque
The Last Interglacial (LIG, 129–116 thousand years ago) is an excellent case study for global warming scenarios and a target for proxy-model comparisons. The LIG global average sea surface temperature (SST) was ~0.5 °C higher than pre-industrial (PI). Contrary to the global average, tropical SST proxy compilations and model simulations show a negative anomaly in LIG SST relative to PI. Here, we present
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Catastrophic event sequences across the Permian-Triassic boundary in the ocean and on land Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-09 Zhong-Qiang Chen, David A.T. Harper, Stephen Grasby, Lei Zhang
This review forms the preface of a special issue dealing with Environmental stresses and biotic responses during the Palaeozoic-Mesozoic transition, and develops an improved understanding of the sequence of catastrophe events associated with the Permian-Triassic (P–Tr) transition in particular. The 16 papers that comprise this special issue mostly focus on the Paleo-Tethys and Panthalassia regions
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Editorial preface to special issue: Extreme environments and biotic responses during the Neoproterozoic-Phanerozoic transition Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-13 Zhong-Qiang Chen, David A.T. Harper, Stephen Grasby, Lei Zhang
This special issue deals with Extreme environments and biotic responses during the Neoproterozoic-Phanerozoic transition and comprises 23 papers. In this preface, we summarise the major findings and place them in a wider context. Some key discoveries are as follows: (1) After the Marinoan global glaciation (end-Cryogenian), a rise in seawater carbon isotopic composition of dissolved inorganic carbon
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Historical population dynamics of the Adélie penguin in response to atmospheric-ocean circulation patterns at Beaufort Island, Ross Sea, Antarctica Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-13 Zhangqin Zheng, Yaguang Nie, Xin Chen, Jing Jin, Qianqian Chen, Xiaodong Liu
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Early to middle Miocene ice sheet dynamics in the westernmost Ross Sea (Antarctica): Regional correlations Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-09 Lara F. Pérez, Robert M. McKay, Laura De Santis, Robert D. Larter, Richard H. Levy, Timothy R. Naish, John B. Anderson, Philip J. Bart, Martina Busetti, Gavin Dunbar, Chiara Sauli, Christopher C. Sorlien, Marvin Speece
The present-day morpho-stratigraphy of the Ross Sea is the result of Cenozoic tectonic and cryospheric events, and constitutes a key record of Antarctica's cryospheric evolution. An enduring problem in interpreting this record in a broader regional context is that the correlation between eastern and western Ross Sea stratigraphy has remained uncertain due to the limited number of drill sites. We correlate
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Seismic constraints for ice sheets along the northern margin of Beringia Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-03 Carsten Lehmann, Wilfried Jokat
Beringia today is a partly submerged Arctic region bordered by the Lena River in East Siberia and the Mackenzie River in North America. Whilst emergent at times of eustatic sea-level fall, the northern Beringian Margin was affected by the repeated growth and decay of regional ice sheets. The size and dynamism of these ice sheets are a subject of some debate that can be addressed using geophysical data
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Geochemical evidence from the Kioto Carbonate Platform (Tibet) reveals enhanced terrigenous input and deoxygenation during the early Toarcian Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-02 Zhong Han, Xiumian Hu, Zhongya Hu, Hugh C. Jenkyns, Tianhao Su
The early Toarcian, as registered in a variety of sedimentary archives, was characterized by an abrupt negative carbon-isotope excursion (CIE) typically superimposed on a long-term positive trend, and was accompanied by significant climatic and environmental changes. However, the changes in continental weathering influx and oceanic deoxygenation in shallow waters and their possible role in causing
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Terrestrial and marine organic matter evidence from a Cretaceous deep-sea chert of Japan: Implications for enhanced hydrological cycle during the Aptian OAE 1a Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-02 Yuki Nakagawa, Julien Legrand, Maximilien Bôle, Rie S. Hori, Junichiro Kuroda, Hitoshi Hasegawa, Masayuki Ikeda
The early Aptian Oceanic Anoxic Event (OAE 1a; ca. 120 Ma) was accompanied by a massive eruption of the Ontong Java Plateau, doubling atmospheric pCO₂, and increasing sea surface temperature by 4–8 °C. In this study, we attempted a palynological analysis of the Hauterivian to Cenomanian deep–sea chert from the Goshikinohama site, and successfully obtained a variety of microremains, mainly represented
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Major sulfur cycle perturbations in the Panthalassic Ocean across the Pliensbachian-Toarcian boundary and the Toarcian Oceanic Anoxic Event Glob. Planet. Change (IF 4.956) Pub Date : 2022-07-01 Wenhan Chen, David B. Kemp, Robert J. Newton, Tianchen He, Chunju Huang, Tenichi Cho, Kentaro Izumi
The early Toarcian Oceanic Anoxic Event (T-OAE, ~183 Ma) was characterized by marine deoxygenation and the burial of organic-rich sediments at numerous localities worldwide. However, the extent of marine anoxia and its impact on the sulfur cycle during the T-OAE is currently poorly understood. Here, stable sulfur isotopes of reduced metal-bound sulfur (δ34Spyrite) and pyrite sulfur concentrations (SPY)
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Isotopic evidence for changes in the mercury and zinc cycles during Oceanic Anoxic Event 2 in the northwestern Tethys, Austria Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-24 Hanwei Yao, Xi Chen, Michael Wagreich, Stephen E. Grasby, Sheng-Ao Liu, Runsheng Yin, Rosalie Tostevin, Yiwen Lv, Xue Gu, Xuan Liu, Chengshan Wang
The Cenomanian-Turonian Oceanic Anoxic Event 2 (OAE 2, ca. 94 Ma) was one of the most extreme carbon cycle and climatic perturbations of the Phanerozoic Eon. Widespread deposition of organic-rich shales during OAE 2 has been attributed to a rapid rise in atmospheric CO2, global heating, and marine anoxia triggered by intense large igneous province (LIP) volcanism. Here, we present new Hg and Zn elemental
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A massive magmatic degassing event drove the Late Smithian Thermal Maximum and Smithian–Spathian boundary mass extinction Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-24 Yong Du, Huyue Song, Thomas J. Algeo, Haijun Song, Li Tian, Daoliang Chu, Wei Shi, Chao Li, Jinnan Tong
The role of volcanism as a driver of climate change remains widely debated. Following the end-Permian mass extinction, the protracted Early Triassic recovery interval was characterized by extreme climatic and environmental perturbations (hyperwarming, intense subaerial weathering, and extensive marine euxinia) and large carbon- and sulfur-cycle perturbations. Although a magmatic trigger is widely accepted
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The subduction-related the Great Unconformity in the Tarim intracraton, NW China Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-28 Bingshan Ma, Weizhen Tian, Guanghui Wu, R. Damian Nance, Yawen Zhao, Yongquan Chen, Shaoying Huang
The Great Unconformity across the Proterozoic-Phanerozoic boundary records a significant change of the Earth's continents, atmosphere, environment and life. Its origin has been assumed to be glacioeustatic mechanism in the cratonic interior. On the contrary, we provide evidences for the sub-Cambrian Great Unconformity that can be traced across the Tarim Craton (NW China) from recent geochronological
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Astronomical climate changes trigger Late Devonian bio- and environmental events in South China Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-22 Kunyuan Ma, Linda Hinnov, Xinsong Zhang, Yiming Gong
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Sea-glacier retreating rate and climate evolution during the marine deglaciation of a snowball Earth Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-22 Zhouqiao Zhao, Yonggang Liu, Haijin Dai
During the Neoproterozoic snowball Earth events, the climate was cold and the oceans were covered by marine ice of ~1000 m thick (sea glacier). Extremely high CO2 level was required in order to trigger the deglaciation these events. It is unclear how long it would take for the sea-ice cover to be completely ablated after the deglaciation started, and what the physical state of the ocean looked like
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Unraveling the global teleconnections of Indian summer monsoon clouds: expedition from CMIP5 to CMIP6 Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-26 Ushnanshu Dutta, Anupam Hazra, Hemantkumar S. Chaudhari, Subodh Kumar Saha, Samir Pokhrel, Utkarsh Verma
We have analyzed the teleconnection of total cloud fraction (TCF) with global sea surface temperature (SST) in multi-model ensembles (MME) of the fifth and sixth Coupled Model Intercomparison Projects (CMIP5 and CMIP6). CMIP6-MME has a more robust and realistic teleconnection (TCF and global SST) pattern over the extra-tropics (R ~ 0.43) and North Atlantic (R ~ 0.39) region, which in turn resulted
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Si isotope ratio of radiolaria across Triassic–Jurassic transition in a pelagic deep-sea bedded chert (Inuyama, Japan) Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-24 Maximilien Bôle, Takayuki Ushikubo, Rie S. Hori, Peter O. Baumgartner, Yuki Nakai, Masayuki Ikeda
The end-Triassic extinction event (ETE) marks one of the “Big five” mass extinction events of the Phanerozoic, yet the timing and nature of environmental changes on a global scale remain elusive. Here we report a mm-scale high-resolution δ30Si profile of sea surface-dwelling radiolaria, preserved as moulds, spanning the end-Triassic radiolarian turnover interval of the deep-sea succession at the Katsuyama
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General Holocene warming trend in arid Central Asia indicated by soil isoprenoid tetraethers Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-23 Yanwu Duan, Qing Sun, Josef P. Werne, Juzhi Hou, Huan Yang, Qiang Wang, Farhad Khormali, Dunsheng Xia, Guoqiang Chu, Fahu Chen
A progressive warming or a long-term cooling trend during the Holocene remain controversial both at a regional and global scale. One possible reason for this discrepancy could be seasonality and uncertainties in the biases of various temperature proxies. Here, we present the distributions of archaeal isoprenoid glycerol dialkyl glycerol tetraethers (iGDGTs) from two soil transects in Arid Central Asia
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Wildfire response to rapid climate change during the Permian-Triassic biotic crisis Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-18 Yi Song, Yuan Tian, Jianxin Yu, Thomas J. Algeo, Genming Luo, Daoliang Chu, Shucheng Xie
Char and polycyclic aromatic hydrocarbons (PAHs), which can serve as proxies for wildfire frequency and/or intensity, are widely present in Permian-Triassic boundary (PTB) strata, providing information on volcanism or on climatic control of fuel availability (linked to vegetation type and density) or combustibility (linked to aridity). Here, we present evidence to separate temporal from geographic
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Reconstruction of the early Eocene paleoclimate and paleoenvironment of the southeastern Neo-Tethys Ocean Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-22 Yixin Dong, Liliana Calderón Convers, Shijun Jiang, Xiaona Li, Peng Zhu, Hongde Chen, Ying Cui
The early Eocene is thought to be the warmest period of the Cenozoic Era, with global temperatures ~10 °C higher than today. Few studies have focused on the paleoclimatic history of the early Eocene southeastern Neo-Tethys Ocean despite its tectonic significance. Here, we report new geochemical data that reveal the paleoclimate conditions of the early Eocene (~ 53.7 to 52.6 Ma) from the Qumiba section
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Climate sustained the evolution of a stable postglacial woody cover over the Tibetan Plateau Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-21 Ying Cheng, Hongyan Liu, Yue Han, Qian Hao
The Tibetan Plateau (TP) is referred to as the world's “Third Pole” and the “Asian Water Tower”. It is dominated by herbaceous plants, with sparse to no vegetation cover in its central and western parts. Only 12% of the TP land mass is covered by forest on its eastern edge where most of the human population is distributed. Understanding forest evolution and its driving forces in this region is essential
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A revised core-seismic integration in the Molloy Basin (ODP Site 909): Implications for the history of ice rafting and ocean circulation in the Atlantic-Arctic gateway Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-20 Jens Gruetzner, Jens Matthiessen, Wolfram H. Geissler, A. Catalina Gebhardt, Michael Schreck
Today's cryosphere reflects an extreme climate state that developed through stepwise global Cenozoic cooling. In this context the opening of the Fram Strait, the Atlantic-Arctic Gateway (AAG), enabled deep-water exchange between the northern North Atlantic and the Arctic Ocean and thereby influenced global ocean circulation and climate. Here we present a new age model for Ocean Drilling Program Site
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An astronomical time scale of early Pliocene from the Mediterranean Sea, Egypt Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-14 Sherif Farouk, Chuanzhen Ren, Ahmed Abdeldaim, Ahmad Salama, Huaichun Wu, Khaled El-Kahtany, Amr S. Zaky
Pliocene diachronism and mismatches between planktic foraminifera and nannofossil bioevents are clearly observed in the Mediterranean Sea. Hence, astronomical tuning combined with calcareous nannofossils and plankton foraminiferal biozones constitutes one of the important tools for regional correlation between different paleolatitudes. Consecutive and high-resolution well logs from the Sapphire-Dd
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Analysis of soil moisture trends in Europe using rank-based and empirical decomposition approaches Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-13 Laura Almendra-Martín, José Martínez-Fernández, María Piles, Ángel González-Zamora, Pilar Benito-Verdugo, Jaime Gaona
The impact of climate change on soil moisture (SM) dynamics is uncertain. Changes in the Earth's SM during recent decades have been studied globally and in different regions, but little attention has been given to Europe. In addition, most previous works have just relied on a monotonic behavior of SM changes, which is a strong assumption and not always valid. We argue that this fact, together with
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Enhanced direct ventilation in the subarctic Pacific Ocean during 3.5–2.73 Ma: New evidence of elemental results from ODP Site 882 Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-10 Ting Chen, Qingsong Liu, Xiaodan Wang
Ocean ventilation change in the subarctic Pacific Ocean is critical for regulating nutrients, heating, and ocean–atmosphere CO2 exchange. Debate continues over whether direct ventilation in the subarctic Pacific Ocean has reached the deep/bottom oceans on different time scales over the last millions of years. Here, we studied the main and trace elements, including Si, Ca, Ba, Zn, Zr, and Rb, and stable
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Lipid biomarker (brGDGT)- and pollen-based reconstruction of temperature change during the Middle to Late Holocene transition in the Carpathians Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-09 María J. Ramos-Román, Cindy De Jonge, Eniko Magyari, Daniel Veres, Liisa Ilvonen, Anne-Lise Develle, Heikki Seppä
To reconstruct changes in vegetation, temperature, and sediment geochemistry through the last 6.5 cal ka BP, in the Subcarpathian belt of the Eastern Carpathians (Romania), pollen, branched glycerol dialkyl glycerol tetraethers (brGDGTs) and X-ray fluorescence analyses have been integrated. Pollen and brGDGTs (a bacterial lipid biomarker proxy) are used as paleothermometers for reconstructing the mean
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Lacustrine redox variations in the Toarcian Sichuan Basin across the Jenkyns Event Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-09 Jinchao Liu, Jian Cao, Tianchen He, Feng Liang, Jing Pu, Yan Wang
The Early Jurassic Jenkyns Event (~183 Ma) represents a major environment perturbation event, characterized by the negative carbon isotope excursion during the early Toarcian. Reconstruction of redox conditions, especially in the mega-lakes, across the Jenkyns Event is of significance to understand the biogeochemical dynamics on land at the time. Here, we report iron speciation and trace metal data
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Glauconite authigenesis during the warm climatic events of Paleogene: Case studies from shallow marine sections of Western India Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-02 Tathagata Roy Choudhury, Sonal Khanolkar, Santanu Banerjee
Glauconite forms abundantly within the Paleogene warm climatic intervals. However, the role of warm climate on glauconitization is yet to be explored. Glauconitic shales are ubiquitous in transgressive shallow marine deposits of Cambay, Kutch, Jaisalmer, and Barmer basins at the western margin of India. Although the glauconite is most abundant in upper Paleocene-lower Eocene sedimentary deposits in
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Widespread wildfires linked to early Albian Ocean Anoxic Event 1b: Evidence from the Fuxin lacustrine basin, NE China Glob. Planet. Change (IF 4.956) Pub Date : 2022-06-01 Xiaotao Xu, Longyi Shao, Kenneth A. Eriksson, Jiamin Zhou, Dongdong Wang, Haihai Hou, Jason Hilton, Shuai Wang, Jing Lu, Timothy P. Jones
Wildfires are an important source of disturbances in the Earth's system and are of great significance for understanding the interactions between environmental, atmospheric and vegetation changes over deep time. The early Cretaceous was a “high-fire” interval with frequent and widespread wildfires globally, but the timing and global significance of these wildfire events during this time remain uncertain
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The early Oligocene establishment of modern topography and plant diversity on the southeastern margin of the Tibetan Plateau Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-29 Mengxiao Wu, Jian Huang, Robert A. Spicer, Shufeng Li, Jiagang Zhao, Weiyudong Deng, Wenna Ding, He Tang, Yaowu Xing, Yimin Tian, Zhekun Zhou, Tao Su
Quantifying the interactions between topography, climate and plant diversity within one of the world's biodiversity hotspots, the southeastern margin of the Tibetan Plateau, remains elusive due to few reliable quantitative paleoelevation reconstructions, precise geological age constraints and well-preserved plant fossils. The Lühe Basin, on the southeastern margin of Tibetan Plateau has yielded abundant
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Evaluation of chemical weathering proxies by comparing drilled cores versus outcrops and weathering history during the Permian–Triassic transition Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-29 Jianbo Chen, Yun Guo, Hai-Bo Wei, Hang-Yu Liu, Rong-Yao Ma, Zhuang Xiao, Zhuo Feng
Continental records of the Permian–Triassic boundary are characterized by intense chemical weathering, likely due to global warming and acid rainfall associated with volcanism. However, the weathering history throughout the late Permian has not been interrogated in time-equivalent continental successions because of the lack of stratigraphically continuous deposits. Here, we present comparative investigations
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Spatial heterogeneity in carbonate-platform environments and carbon isotope values across the Paleocene–Eocene thermal maximum (Tethys Himalaya, South Tibet) Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-28 Juan Li, Xiumian Hu, Eduardo Garzanti, Marcelle BouDagher-Fadel
The Paleocene–Eocene Thermal Maximum (PETM, ~56 Ma) is a large negative carbon isotope excursion (CIE) that testifies to a massive perturbation of the global carbon cycle and has been considered to be an ancient, deep-time analogue for present and future climate change. However, the environmental and carbon isotopic response to the PETM in shallow-water carbonate platforms has remained largely elusive
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Spatial and temporal characteristics of the precipitation response to the 4.2 ka event in the Asian summer monsoon region Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-27 Dandan Wang, Manyue Li, Shengrui Zhang, Qinghai Xu, Liwei Wu
The 4.2 ka event was the most abrupt climatic event during the transition between the middle and late Holocene. It had a profound influence on the regional ecological environment and human cultural development and was characterized by the rapid onset of aridification in the mid- and low-latitudes regions of the Northern Hemisphere. However, the nature, structure and spatial expression of the 4.2 ka
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Enhanced human activity altered the late Holocene vegetation composition in subtropical East Asia Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-26 Yunping Song, Hai Xu, Jianghu Lan, Jin Zhang, Kang'en Zhou, Siwei Shi, Jing Wang, Chukun Hu, Jun Cheng, Bing Hong, Xinying Zhou
Understanding past climate and vegetation changes is essential to assessing the role of climate and human activity in dominating regional vegetation compositions. Here we show a wetting trend from mid- to late-Holocene over subtropical East Asia based on peat cellulose δ18O and a compilation of other robust hydroclimatic records. Under such a wetter condition, subtropical East Asia is expected to be
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Global cooling initiated the Middle-Late Mississippian biodiversity crisis Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-26 Le Yao, Ganqing Jiang, Horng-sheng Mii, Yifang Lin, Markus Aretz, Jitao Chen, Yuping Qi, Wei Lin, Qiulai Wang, Xiangdong Wang
During the Mississippian period, metazoan reefs and other marine faunas gradually recovered from the Late Devonian mass extinctions and reached a peak in the late Visean (~334–332 Ma). Faunal diversity started to decline from the latest Visean (~332–330 Ma) through Serpukhovian (~330–323 Ma), with significant genera/species losses and ecosystem reconstruction. This Middle-Late Mississippian biodiversity
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Spatial-temporal evolution of the source-to-sink system in the northwestern South China Sea from the Eocene to the Miocene Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-25 Chao Fu, Shengli Li, Shunli Li, Jianyong Xu
The northwestern South China Sea (NW-SCS) presents a spatial-temporal evolution of its source-to-sink (S2S) system, that recorded the movement of the Indochina block and the collision between the Indian and Eurasian plates. However, complex tectonic movements and topographic evolution have led to controversial studies about the spatial-temporal distribution of allogenic materials and autogenic sediments
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Simulation of Arctic sea ice within the DeepMIP Eocene ensemble: Thresholds, seasonality and factors controlling sea ice development Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-25 Igor Niezgodzki, Gregor Knorr, Gerrit Lohmann, Daniel J. Lunt, Christopher J. Poulsen, Sebastian Steinig, Jiang Zhu, Agatha de Boer, Wing-Le Chan, Yannick Donnadieu, David K. Hutchinson, Jean-Baptiste Ladant, Polina Morozova
The early Eocene greenhouse climate maintained by high atmospheric CO2 concentrations serves as a testbed for future climate changes dominated by increasing CO2 forcing. In particular, the early Eocene Arctic region is important in the context of future CO2 driven climate warming in the northern polar region and associated shrinking Arctic sea ice. Here, we present early Eocene Arctic sea ice simulations
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A detailed magnetic record of Pleistocene climate and distal ash dispersal during the last 800 kyrs - The Suhia Kladenetz quarry loess-paleosol sequence near Pleven (Bulgaria) Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-19 Diana Jordanova, Christian Laag, Neli Jordanova, France Lagroix, Bozhurka Georgieva, Daniel Ishlyamski, Yohan Guyodo
Loess-paleosol sequences (LPS) from the Lower Danube area are valuable terrestrial archives of environmental change in SE Europe during the Pleistocene. A twenty-seven meters thick sequence has been sampled in Central North Bulgaria near the city of Pleven within the Suhia Kladenetz (SK) quarry. The sedimentary sequence consists of seven loess units and six interbedded paleosol complexes covering the
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Eustasy in the Aptian world: A vision from the eastern margin of the Iberian Plate Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-24 Telm Bover-Arnal, Ramon Salas, Joan Guimerà, Josep Anton Moreno-Bedmar
Eustatic controls on Early Cretaceous (Aptian) sedimentation in the western Tethys are discerned in outcrops of carbonate platforms that developed in the Maestrat rift basin located at the eastern margin of the Iberian Plate. The relative sea-level fluctuations with a dominant eustatic contribution investigated had estimated magnitudes of between 50 and 60 m in <0.9 My and ≥115 m in <3 My, and occurred
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Characteristics and circulation patterns for wet and dry compound day-night heat waves in mid-eastern China Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-10 Feng Ma, Xing Yuan, Hua Li
Compound day-night heat waves (CohotEs) have more adverse effects on human health and ecosystem, and the consequences vary with humidity. This study classifies the CohotEs over Chinese mainland into wet and dry CohotEs, and compares their characteristics and associated circulation anomalies. Here, a populated region of mid-eastern China (MEC) with higher occurrence of both types of CohotEs is mainly
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Late quaternary hydrological changes in the southeastern amazon basin from n-alkane molecular and isotopic records in sediments of Saci lake, Pará state (Brazil) Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-05 G.S. Martins, R.C. Cordeiro, B. Turcq, P.A. Meyers, M. Mendez-Millan, L.S. Moreira, D. Fontes, R.A. Rodrigues, A. Sifeddine, H. Behling, I.D. Bouloubassi
The molecular distributions and isotopic ratios (δ13C and δD) of n-alkanes in sediments deposited during the last 35 cal kyr BP in Saci Lake, southeastern Amazonia, have been measured and interpreted for their paleoclimate information. A terrestrial origin for the odd carbon-numbered long-chain (>C27) n-alkanes has been inferred from molecular distributions. A shift in the n-alkane δ13C values across
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Multivariable statistical analysis between geomagnetic field, climate, and orbital periodicities over the last 500 KYR, and their relationships during the last interglacial Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-05 Luiggina Cappellotto, María Julia Orgeira, Víctor Manuel Velasco Herrera, Rodolfo Gustavo Cionco
Relationships between geomagnetic field (GF) variations, paleoclimates, and Milankovitch cycles have increasingly attracted the attention of researchers mainly because of the assumption that GF may have acted as a climate forcing, suggesting that GF variations and orbital forcing may be linked in a complex synergistic way, especially, during interglacials and interstadials. We first performed an exhaustive
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Black carbon, organic carbon, and mineral dust in South American tropical glaciers: A review Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-05 S. Gilardoni, B. Di Mauro, P. Bonasoni
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Predicted sea-ice loss will terminate Iceland's driftwood supply by 2060 CE Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-02 Tomáš Kolář, Michal Rybníček, Ólafur Eggertsson, Alexander Kirdyanov, Tomáš Čejka, Petr Čermák, Tomáš Žid, Hanuš Vavrčík, Ulf Büntgen
Driftwood supply was a pivotal factor for the Norse expansion in medieval times and still exhibits an essential resource for Arctic settlements. The physical causes and societal consequences of long-term changes in the distribution of Arctic driftwood are, however, poorly understood. Here, we use dendrochronology to reconstruct the age and origin of 289 driftwood samples that were collected at remote
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From the Andes and the Drake Passage to the Rio Grande Submarine Fan: Paleoclimatic and paleogeographic evidence in the Cenozoic Era from the South Atlantic – Austral Segment, Pelotas Basin Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-06 Marlise Colling Cassel, Farid Chemale, Mateus Rodrigues Vargas, Marcelo Kehl de Souza, Tiago Jonatan Girelli, Gisela Serêjo de Oliveira
The Cenozoic depositional history of the Pelotas Basin was driven by the interaction between the spreading processes of the Atlantic Ocean and the formation of the Andean Cordillera. We integrated seismic interpretation and backstripping techniques with evaluation of spreading rates in the South Atlantic and subduction beneath the Andes to unveil the main climatic, eustatic and active tectonic events
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Pliocene-Pleistocene evolution of the lower Yellow River in eastern North China: Constraints on the age of the Sanmen Gorge connection Glob. Planet. Change (IF 4.956) Pub Date : 2022-05-05 Zhixiang Wang, Yongdong Mao, Jianzhen Geng, Chunju Huang, James Ogg, David B. Kemp, Ze Zhang, Zhibin Pang, Rui Zhang
The Yellow River, the second longest river in China, originates in the northeastern Tibetan Plateau, flows in a contorted square-bend-shaped path through the Loess Plateau, then enters the Fenwei Graben before discharging through the Sanmen Gorge onto the North China Plain. Prior to its connection through the Sanmen Gorge, which cuts through the drainage divide of the Hua and Taihang mountain belt