Global and Planetary Change最新文献

{"title":"Oceanic deoxygenation linked to enhanced water column stratification in the eastern Tethys during Cretaceous Oceanic Anoxic Event 2","authors":"Yu Liang ,&nbsp;Yong-Xiang Li ,&nbsp;Hongxuan Lu ,&nbsp;Huanye Wang ,&nbsp;Cece Wang ,&nbsp;Cheng Quan ,&nbsp;Weiguo Liu ,&nbsp;Mei-Fu Zhou ,&nbsp;Zhonghui Liu","doi":"10.1016/j.gloplacha.2025.105270","DOIUrl":"10.1016/j.gloplacha.2025.105270","url":null,"abstract":"<div><div>The mid-Cretaceous Oceanic Anoxic Event 2 (OAE2, ∼94 Ma) stands as a prominent deep-time analogue for understanding global oceanic redox variations in response to major environmental perturbations. However, the mechanisms driving oceanic redox evolution in the eastern Tethys during OAE2, particularly the influence of water column stratification, remain poorly investigated. In this study, we analyze the connections between oceanic redox, stratification, and productivity changes in the eastern Tethys during OAE2 using biomarker records of glycerol dialkyl glycerol tetraethers (GDGTs) and <em>n</em>-alkanes from the Gongzha section, southern Tibet. Our results reveal pronounced increases in oceanic deoxygenation and stratification, alongside reduced productivity, through the carbon isotope stage C4, the main phase of OAE2 following the initial perturbation and prior to the recovery. Combining these findings with existing geological data from the Gongzha section, we infer that enhanced water column stratification may have driven the oceanic deoxygenation by diminishing ocean-atmosphere exchange in the eastern Tethys during OAE2. This mechanism differs from that previously observed in the circum-proto-North Atlantic, where increased productivity and associated enhancement in the organic remineralization may have triggered the marine anoxia. By providing biological constraints, our study indicates the dominant role of water column structure in shaping redox evolution in the eastern Tethys, highlighting distinct regional controls on oceanic redox evolution during OAE2.</div></div>","PeriodicalId":55089,"journal":{"name":"Global and Planetary Change","volume":"258 ","pages":"Article 105270"},"PeriodicalIF":4.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145895084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Precession-dominated summer insolation forcing of East Asian monsoon precipitation since 1.2 Ma: Insights from the Weihe Basin, Central China","authors":"Xuke He ,&nbsp;Yougui Song ,&nbsp;Yue Li ,&nbsp;Jianhong Xu ,&nbsp;Xiaofen Fu ,&nbsp;Huifang Liu ,&nbsp;Qingliang Wang ,&nbsp;Yixiao Han","doi":"10.1016/j.gloplacha.2026.105281","DOIUrl":"10.1016/j.gloplacha.2026.105281","url":null,"abstract":"<div><div>The Asian monsoon is crucial for sustaining billions of people, yet its geological history, primary drivers, and mechanisms remain contentious. To explore the potential driving mechanisms of East Asian summer monsoon (EASM) precipitation since the Early Pleistocene, we here present data from a 272-m-long core of Quaternary lacustrine–fluvial–aeolian sediments from the Weihe Basin in central China. The chronology of the core is established through magnetostratigraphy and tie-point matching with speleothem oxygen isotope (δ¹⁸O) curves. Lithofacies and geochemical profiles reveal that the core records a sedimentary succession from lacustrine through fluvial to aeolian depositional environments since 1.18 Ma. End-member (EM) modeling of lacustrine deposits shows that the transport and deposition of coarse EM3, EM4, and EM5 components are linked to vigorous nearshore hydrodynamics. Consequently, the summed proportion of these three EMs serves as an indicator of monsoon-induced paleolake transgressions and regressions. Reduced precipitation causes lake contraction, and the development of littoral lake sub-facies enriched in coarse EM components. Hydrodynamic sorting, modulated by catchment hydrology, imparted a precession signal to lacustrine bulk-sediment XRF element intensities. On orbital timescales, EASM precipitation variations are governed by precession-dominated boreal-summer insolation. Featuring a robust chronology and sensitive response of lacustrine proxies to precipitation, our findings confirm that insolation forcing fundamentally governs precipitation patterns in East Asia.</div></div>","PeriodicalId":55089,"journal":{"name":"Global and Planetary Change","volume":"258 ","pages":"Article 105281"},"PeriodicalIF":4.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145895046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Astronomically paced Katian (late Ordovician) sea-level changes: A record from Northern Yangtze Block","authors":"Chuanzhen Ren ,&nbsp;Qiang Fang ,&nbsp;Huaichun Wu ,&nbsp;Wentao Huang ,&nbsp;Xiuchun Jing ,&nbsp;Jinlin Liu ,&nbsp;Ziyu Wang ,&nbsp;Congcong Gai ,&nbsp;Meinan Shi ,&nbsp;Tianshui Yang ,&nbsp;Haiyan Li","doi":"10.1016/j.gloplacha.2026.105283","DOIUrl":"10.1016/j.gloplacha.2026.105283","url":null,"abstract":"<div><div>Astronomical forcing is recognized as a significant external driver influencing sea-level changes under both typical icehouse and greenhouse conditions; however, mechanisms underlying this forcing remain ambiguous in the context of such climatic transition. The Katian represents a key stage characterized by a gradual shift from Sandbian greenhouse to Hirnantian icehouse conditions in late Ordovician. Here, we conducted sedimentological and cyclostratigraphic analyses on the Katian Shiyanhe Formation at Sigang section in the Northern Yangtze Block, aiming to elucidate the forcing mechanisms of sedimentary processes during a period of climatic transition. Five microfacies zones comprising eight microfacies were identified, and these collectively indicate a mixed shelf sedimentary environment in which three third-order and nine fourth-order depositional sequences were developed. Cyclostratigraphic analyses of magnetic susceptibility (MS), calcium (Ca), and lithological rank series reveal robust Milanković cycle signals, including 405-kyr long eccentricity, 91–106-kyr short eccentricity, 32.4–33.4-kyr obliquity, and 17.5–21.6-kyr precession cycles. A newly constructed astronomical time scale calibrates the duration of third- and fourth-order depositional sequences as ∼1.2 Myr and ∼405 kyr, respectively corresponding to the long-period obliquity and long eccentricity cycles. The cause-and-effect relationship between these cycles and sea-level changes was further corroborated through the sedimentary noise modeling of MS and Ca data. In addition, a pronounced imprint of the obliquity cycle is evident in the middle <em>Aphelognathus grandis</em> conodont biozone (viz., 448.5–449.7 Ma). This interval coincides with sea-level fall and the reported ice sheet growth at Gondwana, indicative of an enhanced teleconnection between the low and high latitudes driven by global cooling. Our study highlights the controlling effects of different astronomical cycles on the sedimentary processes during the climatic transition of stepwise cooling.</div></div>","PeriodicalId":55089,"journal":{"name":"Global and Planetary Change","volume":"258 ","pages":"Article 105283"},"PeriodicalIF":4.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145902926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Antarctic warming affects northern Equatorial Indian Ocean SST via oceanic tunnels","authors":"Sharmila Sherin ,&nbsp;Manish Tiwari ,&nbsp;Vikash Kumar","doi":"10.1016/j.gloplacha.2026.105321","DOIUrl":"10.1016/j.gloplacha.2026.105321","url":null,"abstract":"<div><div>The Indian monsoon is highly sensitive to tropical Indian Ocean SST, which exhibits significant variability on various timescales. Here we reconstruct the surface and thermocline temperatures of the northern equatorial Indian Ocean for the past 37 kyr, using Mg/Ca ratios of the surface- and thermocline-dwelling foraminifera. Our findings indicate a consistent warming trend at the surface and thermocline during the cold Heinrich Stadials, coinciding with Antarctic Isotope Maxima (AIM) events and superimposed on the zonal negative dipole structure in the equatorial Indian Ocean. We further support this using a transient climate simulation (TraCE-21ka), which shows that warming of the Southern Ocean during North Atlantic stadials influenced the north equatorial Indian Ocean surface hydroclimate through northward tunnelling of Southern Ocean water masses. With the projected rise in Antarctic and Southern Ocean temperatures, the oceanic tunnels linking southern high-latitude and tropical Indian Ocean climates may have a significant impact on monsoon hydrology.</div></div>","PeriodicalId":55089,"journal":{"name":"Global and Planetary Change","volume":"258 ","pages":"Article 105321"},"PeriodicalIF":4.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145995748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbonate-associated phosphate evidence for a small inorganic phosphorus reservoir in the terminal Ediacaran ocean","authors":"Yonghan Fan ,&nbsp;Meng Cheng ,&nbsp;Xinyang Chen ,&nbsp;Catherine Rose ,&nbsp;Haiyang Wang ,&nbsp;Zihu Zhang ,&nbsp;Thomas J. Algeo ,&nbsp;Chao Li","doi":"10.1016/j.gloplacha.2026.105284","DOIUrl":"10.1016/j.gloplacha.2026.105284","url":null,"abstract":"<div><div>The terminal Ediacaran (ca. 551–533 Ma) was characterized by profound biological innovations and environmental upheavals, in which phosphorus (P)—the ultimate limiting nutrient for marine productivity—is postulated to have played a key role. However, P availability in the terminal Ediacaran ocean remains uncertain due to the lack of an appropriate proxy record. To better reconstruct seawater P levels during this time interval, we analyzed carbonate-associated phosphate [CAP; expressed as CAP/(Ca + Mg)], a new proxy for P availability in ancient oceans, in three upper Ediacaran successions: the Nama Group (Namibia), the Shibantan Member of the Dengying Formation (Wuhe, South China), and the Algal Dolomite, Gaojiashan and Beiwan members of the Dengying Formation (Gaojiashan, South China). Our results reveal consistently low CAP/(Ca + Mg) values (range: 0.02–0.69 mmol/mol, mean: 0.13 ± 0.01 mmol/mol, 2σ, the same below) for all study sections, falling at the lower end of modern marine carbonate values. Lithofacies, carbonate oxygen isotopes, Mn/Sr and Mg/(Mg + Ca) ratios indicate possible influences from release of Fe-bound P, meteoric diagenesis, recrystallization or dolomitization. The low CAP/(Ca + Mg) values thus represent a maximum estimate for the seawater P availability. The low CAP values from two geographically separated cratons likely reflect a generally small oceanic inorganic P reservoir at least in shelves. This study provides insights into the interplay between nutrient cycling, redox dynamics, and biological evolution during one of the most pivotal transitional periods in Earth history.</div></div>","PeriodicalId":55089,"journal":{"name":"Global and Planetary Change","volume":"258 ","pages":"Article 105284"},"PeriodicalIF":4.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145902911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Plio–Pleistocene shift in East Asian weathering regimes: From continental margin floodplains to highland erosion in the Yellow River basin, inferred from geochemical and lithium isotopic records","authors":"Fangliang Li ,&nbsp;Shouye Yang ,&nbsp;Evan J. Ramos ,&nbsp;Daniel O. Breecker ,&nbsp;Yulong Guo ,&nbsp;Jingrui Li ,&nbsp;Fangbing Li ,&nbsp;Chengfan Yang ,&nbsp;Chenyang Jin","doi":"10.1016/j.gloplacha.2026.105312","DOIUrl":"10.1016/j.gloplacha.2026.105312","url":null,"abstract":"<div><div>Continental weathering regulates long-term climate via atmospheric CO₂ consumption. Understanding how weathering regimes respond to tectonic and climatic forcing is therefore essential for clarifying the weathering-climate relationships. The Plio-Pleistocene reorganization of the Yellow River drainage provides an ideal setting to investigate such changes. While accumulating evidence suggests establishment of the modern-like drainage system no later than ∼1 Ma, how this geomorphic transformation affected weathering patterns remains unexplored. Here, we address this question using new Li isotopic data (δ⁷Li) from a marginal sea sediment core, integrated with Nd isotopes and geochemical records. Our multi-proxy record reveals a coupled provenance and weathering regime shift during the Mid-Pleistocene Transition (MPT). The εNd values shift from cratonic (−12 to −16) to orogenic (−10 to −12) signatures, while δ⁷Li values of weathering products transition from −2.7 ± 0.9‰ to −0.9 ± 0.6‰. Combined with mineralogical and geochemical weathering indices, these data document a shift from more incongruent weathering dominated by continental margin floodplains to more congruent weathering governed by highlands of the NE Tibetan Plateau and Loess Plateau. We interpret this transition as a direct response to Yellow River reorganization, which replaced proximal cratonic sources with detritus from rapidly eroding orogenic and loess regions. Our study thus demonstrates that the balance between floodplain and mountain weathering set by large river drainage integration, maybe an important control on the type and intensity of silicate weathering over geologic timescales.</div></div>","PeriodicalId":55089,"journal":{"name":"Global and Planetary Change","volume":"258 ","pages":"Article 105312"},"PeriodicalIF":4.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146001039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reduced spatial heterogeneity of day-night temperature variability difference under global changes","authors":"Fayong Liu ,&nbsp;Fangli Wei ,&nbsp;Yuanyuan Huang","doi":"10.1016/j.gloplacha.2026.105311","DOIUrl":"10.1016/j.gloplacha.2026.105311","url":null,"abstract":"<div><div>Temperature and its variability underpin numerous earth system processes and human activities, yet variations occurring under darkness remain insufficiently explored. In this study, we quantified nighttime temperature variability (Night_var) and daytime temperature variability (Day_var) using three complementary methods: range, range/mean, and standard deviation, allowing us to examine both their shared patterns and distinct characteristics. Globally, both Day_var and Night_var declined significantly (−0.18 °C century⁻¹, <em>P</em> &lt; 0.05), yet slower than the diurnal temperature range (−0.23 °C century⁻¹, 1950–2023). The day–night temperature variability difference (Differ_var) showed great spatial heterogeneity, with higher Differ_var in tropics while lower in high latitudes. These regional contrasts have been weakening, attributed to the declining albedo in northern mid-to-high latitudes and less sensible heat flux from surface to atmosphere in tropics. The overall shrinkage of the spatial heterogeneity in Differ_var during historical period indicates different biomes are experiencing divergent impacts of Day_var and Night_var changes. This study addresses knowledge gaps in temperature variability at diurnal scale, offering new insights into the global shifted temperature regimes under climate change.</div></div>","PeriodicalId":55089,"journal":{"name":"Global and Planetary Change","volume":"258 ","pages":"Article 105311"},"PeriodicalIF":4.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145962400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Repeated pulses of volcanism drove terrestrial vegetation and climate changes during the Late Triassic Carnian Pluvial Episode in North China","authors":"Peixin Zhang ,&nbsp;Minfang Yang ,&nbsp;Jing Lu ,&nbsp;Jacopo Dal Corso ,&nbsp;Zhongfeng Jiang ,&nbsp;Lei Wang ,&nbsp;Kai Zhou ,&nbsp;Xiaotao Xu ,&nbsp;Yanghang Guo ,&nbsp;Huijuan Chen ,&nbsp;Longyi Shao ,&nbsp;Zhen Xu ,&nbsp;Jason Hilton","doi":"10.1016/j.gloplacha.2026.105301","DOIUrl":"10.1016/j.gloplacha.2026.105301","url":null,"abstract":"<div><div>The Late Triassic Carnian Pluvial Episode (CPE; ∼234–232 Ma) witnessed profound changes in terrestrial ecosystems, vegetation, and climate, which could be related to eruptions of Wrangellia Large Igneous Province (LIP). Nonetheless, the scarcity of detailed terrestrial plant records limits understanding of whether these floral and climate changes were synchronized with Wrangellia's eruption pulses. Here, we investigated high-resolution palynological data through the CPE from the Jiyuan terrestrial Basin in North China. Our data reveal four distinct phases of terrestrial vegetation transition from xerophytes to hygrophytes, with each shift accompanied by pronounced climate transformations from relatively cool-dry to relatively warm-humid conditions. Each vegetation shift is linked temporally with volcanic activity indicators including negative organic carbon isotope excursions, Hg and Hg/TOC peaks, and near-zero Δ¹⁹⁹Hg isotope values. After the first, third and fourth eruptions, vegetation recovery showed resilience with floral reassembly broadly similar to pre-eruption floras. In contrast, the impact of the second eruption was apparently larger and triggered more dramatic changes including a surge in terrestrial plant diversity and hygrophytic species, with vegetation recovery having a distinct and more modern floral composition (e.g., Dipteridaceae, Matoniaceae, Pinaceae, and Podocarpaceae) that persisted after the CPE. Our findings offer new insights into the links between LIP volcanism and terrestrial vegetation and climate changes during the CPE, and demonstrates differential floral and climatic responses to different scales of major CO₂-driven global warming events in deep time in otherwise similar environmental contexts.</div></div>","PeriodicalId":55089,"journal":{"name":"Global and Planetary Change","volume":"258 ","pages":"Article 105301"},"PeriodicalIF":4.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145962397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The footprint of urbanization on land surface phenology in China","authors":"Jialu Gong ,&nbsp;Jianjun Zhao ,&nbsp;Yeqiao Wang ,&nbsp;Hongyan Zhang ,&nbsp;LiangXian Fan ,&nbsp;Tao Xiong ,&nbsp;Yuyu Zhou","doi":"10.1016/j.gloplacha.2026.105306","DOIUrl":"10.1016/j.gloplacha.2026.105306","url":null,"abstract":"<div><div>Urbanization exerts a considerable influence on land surface phenology (LSP), however, the extent and spatial footprint of such impacts have not been thoroughly investigated. Here, we derived the LSP parameters based on the MOD13Q1 product and quantified urbanization's impact along an area-based urban-rural gradient. According to our findings, urbanization causes the start of the growing season (SOS) to begin earlier and the end of the growing season (EOS) to terminate later in urban areas. This effect exhibits a logarithmic decay pattern along the urban-rural gradient, with its footprint proportional to urban size. For the total area, urbanization's footprint on SOS was 5 to 5.5 times the urban size beyond its boundary, while that of EOS ranged from 4.5 to 5.5 times. The urban-rural difference in SOS was greater in regions characterized by cold dry winters, while the difference in EOS was greater in arid regions and climate zones with hot summers and dry winters. Urbanization exerted a broader footprint on LSP where adequate moisture and mild summer temperatures converge. Cropland-dominated areas exhibited greater urban-rural differences in EOS and a wider footprint of urbanization on SOS. These findings highlight the necessity of considering climate background, latitude, and vegetation type in urban-rural phenology research, which is crucial for understanding the variations in urban ecosystems under the backdrop of global climate change.</div></div>","PeriodicalId":55089,"journal":{"name":"Global and Planetary Change","volume":"258 ","pages":"Article 105306"},"PeriodicalIF":4.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145957013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatially focused exhumation supports short-wavelength deformation in the southeastern Tibetan Plateau","authors":"Guihong Zhang ,&nbsp;Yuntao Tian ,&nbsp;Philippe Hervé Leloup ,&nbsp;Zengjie Zhang ,&nbsp;Peizhen Zhang","doi":"10.1016/j.gloplacha.2026.105319","DOIUrl":"10.1016/j.gloplacha.2026.105319","url":null,"abstract":"<div><div>The wider occurrence of high topography on the eastern side of the Tibetan Plateau compared to the western side has sparked debate about the geodynamic mechanisms responsible for eastward plateau growth. Existing end-member models highlight either coherent block extrusion dominated by localized deformation along major faults, or plateau-scale distributed deformation driven by lower crustal flow. These two models have contrasting predictions in terms of spatial pattern of deformation and rock exhumation. Here, we reconstruct the Cenozoic exhumation pattern along a ∼ 150-km-long transect perpendicular to the NE-striking Ailaoshan-Red River shear zone, one of the largest Cenozoic strike-slip faults in the southeastern Tibetan Plateau. Exhumation rate modeling using new and published thermochronological ages shows a high spatial variation. Results reveal a sharp decrease from rapid Oligocene (∼1.9–4.1 km/m.y.) and Miocene (∼0.1–0.15 km/m.y.) exhumation within the ∼15 km-wide central Ailao Shan shear zone to minimum exhumation (∼0.03 km/m.y.) in the surrounding regions. Such a spatially short-wavelength exhumation pattern conflicts with models predicting long-wavelength deformation of crust, but supports the important role of highly localized deformation along major faults dominating the eastward plateau growth.</div></div>","PeriodicalId":55089,"journal":{"name":"Global and Planetary Change","volume":"258 ","pages":"Article 105319"},"PeriodicalIF":4.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145995744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}