Polar Science最新文献

{"title":"Neoproterozoic to Cambrian granitoids of northern Mozambique and Dronning Maud Land Antarctica: Implications for the assembly of Gondwana","authors":"G.H. Grantham ,&nbsp;P.H. Macey ,&nbsp;M.P. Roberts ,&nbsp;B.A. Ingram ,&nbsp;R.A. Armstrong ,&nbsp;K. Shiraishi ,&nbsp;T. Hokada ,&nbsp;B. Eglington ,&nbsp;P. le Roux ,&nbsp;G. Cune","doi":"10.1016/j.polar.2025.101264","DOIUrl":"10.1016/j.polar.2025.101264","url":null,"abstract":"<div><div>The field relationships, petrography, whole rock major, trace element and radiogenic isotope chemistry and geochronology of Cambrian Granites granites from the Nampula Terrane (NT) Mozambique are reported. These data are compared with published data from Neoproterozoic to Cambrian granites from Central Dronning Land (CDML). Age comparisons include data from the Cabo Delgado/Namuno Terrane of northern Mozambique (CDNMT). Whereas there is significant overlap in the chemistry and ages of the granites from the NT, compared to those from CDML and CDNMT, indicating their possible genesis within the same broad orogenic event, subtle differences in mineralogy, chemistry and age are seen. These differences include subsolvus peraluminous mica-dominated granites with ages &lt; ∼530 Ma in all three areas but concentrated in the NT, in contrast to dominantly metaluminous hypersolvus charnockitic syenogranites with ages &gt; ∼530 Ma in CDML and CDTNM, but absent from the NT and western Sverdrupfjella. The differences between the two granite varieties are inferred to reflect differences in tectonic setting during genesis, with the marginally older CDML and CDTNM granites/charnockites resulting from decompression dehydration melting, dominantly of amphibole in the hanging wall of a mega-nappe. In contrast the marginally younger NT granites were generated dominantly from dehydration melting of mica in the footwall of the mega-nappe structure. Geophysical data indicate the thickened crust underlying the mega nappe in DML extends far in to Antarctica indicating much of East Antarctica may be underlain by allochthonous crust.</div></div>","PeriodicalId":20316,"journal":{"name":"Polar Science","volume":"46 ","pages":"Article 101264"},"PeriodicalIF":2.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Isolation and primary characterisation of yeasts isolated from different ecosystems in East Antarctica","authors":"Ekaterina A. Gribanova ,&nbsp;Katsiaryna U. Akhremchuk ,&nbsp;Ekaterina A. Semenchukova ,&nbsp;Andrey V. Dolgikh ,&nbsp;Veronika V. Shchur ,&nbsp;Aleksey V. Yantsevich ,&nbsp;Mikhail P. Andreev ,&nbsp;Yury H. Hihiniak ,&nbsp;Leonid N. Valentovich ,&nbsp;Vladislav Y. Miamin","doi":"10.1016/j.polar.2025.101262","DOIUrl":"10.1016/j.polar.2025.101262","url":null,"abstract":"<div><div>This study focused on the variety and biotechnological potential of yeast isolates from diverse ecosystems in East Antarctica (Thala Hills, Larsemann Hills, and Prince Charles Mountains). A total of 21 yeast strains were isolated from hypolithic and endolithic substrates, soil under moss-lichen communities, and meltwater ponds. Hypolithic communities harboured the highest microbial biomass and culturable yeast counts, suggesting their ecological significance in extreme habitats. Taxonomic identification was performed using MALDI-TOF MS and 18S rRNA gene sequencing, revealing affiliation with 10 genera (primarily <em>Moesziomyces</em>, <em>Leucosporidium</em>, <em>Rhodotorula</em>, and <em>Sporobolomyces</em>) across the phyla <em>Ascomycota</em> and <em>Basidiomycota</em>. The species <em>Sporobolomyces phaffii</em> was the most abundant. Physiological characterization demonstrated enzymatic activities (lipase, DNase, amylase, urease) of isolated yeasts at low temperatures; some strains exhibited antagonistic properties against bacteria. This work expands knowledge of cultivable Antarctic yeasts and highlights their adaptive traits for biotechnological applications, such as bioremediation and bioactive compound synthesis.</div></div>","PeriodicalId":20316,"journal":{"name":"Polar Science","volume":"46 ","pages":"Article 101262"},"PeriodicalIF":2.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diurnal variation of the planetary boundary layer over Dome C (Antarctica) impacting the formation of supercooled liquid water clouds","authors":"Philippe Ricaud ,&nbsp;Pierre Durand ,&nbsp;Paolo Grigioni ,&nbsp;Virginia Ciardini ,&nbsp;Massimo Del Guasta ,&nbsp;Giuseppe Camporeale ,&nbsp;Jean-Luc Attié ,&nbsp;Eric Bazile","doi":"10.1016/j.polar.2025.101256","DOIUrl":"10.1016/j.polar.2025.101256","url":null,"abstract":"<div><div>While the majority of Antarctic clouds are made up of ice crystals, a significant proportion consists of supercooled liquid water (SLW), defined as water in liquid form below 0 °C. Observations of SLW clouds have been carried out for several years at Dome C, the Concordia station (75° S, 123° E; 3233 m above mean sea level), combining observations from LIDAR, microwave radiometer and balloon-borne sondes. The present analysis is separated in two parts. Firstly, we will focus on the diurnal variation of the planetary boundary layer (PBL) from balloon-borne profile observations performed on January 23, 2023 establishing the presence of SLW clouds: 1) at the top of the PBL between the entrainment zone and the capping inversion layer, 2) higher up within a fossil layer, and 3) within the very cold stable boundary layer close to the surface as liquid fog. Secondly, from a statistical study covering several summer periods, we will show that SLW clouds are present from 400 to 600 m above ground level (agl) in the entrainment zone and within the stable boundary layer below 100 m agl where liquid fog can form, with temperatures from −25 °C to −35 °C and LWP (liquid water path, the vertically-integrated SLW content) less than 3.0 g m⁻².</div></div>","PeriodicalId":20316,"journal":{"name":"Polar Science","volume":"46 ","pages":"Article 101256"},"PeriodicalIF":2.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Zircon geochronology of Mt. McMaster and Aker Peaks, Napier Complex, East Antarctica","authors":"Mami Takehara ,&nbsp;Kenji Horie ,&nbsp;Tomokazu Hokada ,&nbsp;Allen Nutman","doi":"10.1016/j.polar.2025.101304","DOIUrl":"10.1016/j.polar.2025.101304","url":null,"abstract":"<div><div>U–Th–Pb geochronology and Th/U ratio analysis of zircon were performed on felsic orthogneiss of Mt. McMaster and Aker Peaks to examine the thermal history of the north-eastern region in the Napier Complex, East Antarctica. Zircons from the Mt. McMaster sample have apparent ages ranging from 2985 to 2462 Ma. Two younger zircon age clusters, 2486 Ma with Th/U ratios &lt;0.1 and 2475 Ma with high Th/U ratios (&gt;1), suggest two-stage zircon growth during c. 2.5 Ga regional metamorphism. Among pre-metamorphic older zircon ages up to 2981 Ma, the c. 2583 Ma is regarded as the timing of the emplacement, namely, protolith age. The older age components (2981–2683 Ma) are considered to be the exotic components derived from the surrounding crustal materials. The two successive generations of phlogopite-bearing felsic orthogneiss (type-1 and type-2) samples from Aker Peaks yield magmatic zircons with apparent ages of 3658–3470 Ma and 3745–3393 Ma. The type-2 orthogneiss also has metamorphic zircons of c. 2498 Ma, with high Th/U ratios indicating the incorporation of Th from the breakdown of Th-rich accessory phases, such as monazite, that occurred during c. 2500 Ma regional metamorphism. The type-1 felsic gneiss is enclosed within the type-2 felsic gneiss and is consistent with the older type-1 formation (c. 3572 Ma), including inherited components (&gt;c. 3614 Ma), predated the younger type-2 formation (c. 3393 Ma). Magmatic ages of the orthogneiss from Aker Peaks in this study are consistent with the protolith ages from the orthogneiss of Rippon Point in Kemp Land.</div></div>","PeriodicalId":20316,"journal":{"name":"Polar Science","volume":"46 ","pages":"Article 101304"},"PeriodicalIF":2.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geological evolution in East Antarctica and related Gondwana fragments","authors":"Tatsuro Adachi ,&nbsp;Fumiko Higashino ,&nbsp;Tomokazu Hokada","doi":"10.1016/j.polar.2025.101312","DOIUrl":"10.1016/j.polar.2025.101312","url":null,"abstract":"<div><div>East Antarctica and its related Gondwana fragments offer a unique geological archive for understanding the evolution of Earth's continental crust and the assembly of supercontinents. These regions preserve Archean to Phanerozoic terranes which record crustal processes associated with supercontinent cycles such as Nuna, Rodinia, and Gondwana. Supercontinent formation is a one of the attractive topics in Earth science, not only for its role in crustal evolution but also for its broader impact on the dynamics of the crust–mantle–core system and on changes in climate and biological evolution. As a key region in Gondwana reconstruction, East Antarctica serves as an exceptional natural setting for investigating tectonic history. Comparative studies with fragments such as India, Sri Lanka, East Africa are essential for refining tectonic models and advancing our understanding of large-scale geological processes. This special issue presents recent advances in basement geology across these regions, aiming to establish a foundation for future integrative research on supercontinent dynamics.</div></div>","PeriodicalId":20316,"journal":{"name":"Polar Science","volume":"46 ","pages":"Article 101312"},"PeriodicalIF":2.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pressure-Temperature-time (P-T-t) evolution of pelitic granulites from the Larsemann Hills, East Antarctica: Insights from accessory mineral geochronology and phase equilibria modeling","authors":"Nilanjana Sorcar ,&nbsp;Sankar Bose ,&nbsp;J. Amal Dev ,&nbsp;Sneha Mukherjee ,&nbsp;J.K. Tomson","doi":"10.1016/j.polar.2025.101306","DOIUrl":"10.1016/j.polar.2025.101306","url":null,"abstract":"<div><div>Pelitic granulites from the Larsemann Hills, Prydz Bay, East Antarctica, preserve a complex polymetamorphic history associated with the supercontinent assembly. This study integrates mineral chemistry, geothermobarometry, phase equilibria modeling, and accessory mineral petrochronology to reconstruct the pressure-temperature-time (P-T-t) evolution of these rocks. Peak metamorphic conditions of ∼950 °C at 8.5 kbar were followed by retrogression along a clockwise P-T path marked by a near-isothermal decompression and a near-isobaric cooling. In situ U-Pb dating of zircon and monazite constrains the timing of peak metamorphism to ∼565 Ma, while apatite U-Pb ages of ∼526 Ma records the subsequent cooling. Older Neoproterozoic ages (∼822–862 Ma) preserved in zircon and monazite indicate an earlier metamorphic episode, reflecting a protracted tectonothermal evolution. Rare earth element partitioning between garnet and zircon supports garnet growth during the Ediacaran-Cambrian high-grade metamorphism. These data collectively document a ∼50 Myr duration of orogenesis and slow cooling rates, consistent with a collisional tectonic setting during the final assembly of East Gondwana, linking Prydz Bay with contemporaneous high-grade terranes in South India, Sri Lanka, and Madagascar.</div></div>","PeriodicalId":20316,"journal":{"name":"Polar Science","volume":"46 ","pages":"Article 101306"},"PeriodicalIF":2.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Post-collisional K-rich mafic magmatism in the Sør Rondane Mountains, East Antarctica: Magmatic processes of layered syenite and mantle modification","authors":"Masaaki Owada ,&nbsp;Toru Sakiyama ,&nbsp;Atsushi Kamei ,&nbsp;Toshiaki Shimura ,&nbsp;Masaki Yuhara ,&nbsp;Kazuhiro Tsukada ,&nbsp;Kenji Horie ,&nbsp;Tomokazu Hokada ,&nbsp;Yasuhito Osanai ,&nbsp;Nobuhiko Nakano ,&nbsp;Tatsuro Adachi","doi":"10.1016/j.polar.2025.101192","DOIUrl":"10.1016/j.polar.2025.101192","url":null,"abstract":"<div><div>The Sør Rondane Mountains (SRM) in eastern Dronning Maud Land, East Antarctica, are situated within the Pan-African suture zone. The timing of the collisional events between West and East Gondwana is regarded as Late Neoproterozoic to Early Cambrian. The geology of the SRM is divided into northeast terrane (NE-terrane) and southwest terrane (SW-terane). These two terranes were collided during the Late Proterozoic. The syenite complex, as post-collisional intrusive rocks, intruding the boundary between the NE- and SW-terranes in the central part of the SRM, consists of a layered syenite and melanosyenite dike. Minettes also occur in the post-collisional mafic intrusive rocks. The U–Pb zircon ages of the layered syenite and the melanosyenite dike are of 559.4 ± 1.6 Ma and 548.8 ± 3.4 Ma, respectively. The recalculated Pb-Pb age of the minette was 557.5 ± 4.8 Ma. According to the dating results, the syenite complex and the minette belongs to the same magmatic stage. The syenite complex and minette have significant characteristics with high-K (K₂O/Na₂O &gt; 3) and high-light/heavy rare earth element (LREE/HREE) ratios (normalized La/Yb &gt; 10), and SiO₂ contents ranging from 44 to 62 wt%. Considering the petrography and geochemistry, the syenite was originated from the minette magma, and the fractionation and accumulation of specific minerals played an important role in the formation of the layered syenite. The minette with a primitive composition bears phenocrysts of Mg- and Cr-rich phlogopite in equilibrium with the mantle peridotite. These features suggest that high-K mafic magma was produced by partial melting of the lithospheric mantle, which was modified by subduction and/or collisional related materials. As the geochemical features of the post-collisional intrusive rocks from central to eastern Dronning Maud Land resembles those of the syenite complex in the SRM, a similar petrogenetic model may be applied to the origin of the high-K mafic magma within the Gondwana suture zone during the Pan-African event.</div></div>","PeriodicalId":20316,"journal":{"name":"Polar Science","volume":"46 ","pages":"Article 101192"},"PeriodicalIF":2.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Franz Josef Land's macrobenthos: Record-high wet biomass values on the Eurasian Arctic shelf","authors":"Anna Gebruk ,&nbsp;Alexander Kokorin ,&nbsp;Maria Mardashova ,&nbsp;Yulia Ermilova ,&nbsp;Victoria Melnikova ,&nbsp;Ilya Fedorov ,&nbsp;Alexandra Barymova ,&nbsp;Olga Konovalova ,&nbsp;Vladimir Rogozhin ,&nbsp;Nikolay Shabalin ,&nbsp;Svetlana Artemyeva ,&nbsp;Viatcheslav V. Rozhnov ,&nbsp;Artem Isachenko ,&nbsp;Renata Lazareva ,&nbsp;Vadim Mokievsky","doi":"10.1016/j.polar.2025.101211","DOIUrl":"10.1016/j.polar.2025.101211","url":null,"abstract":"<div><div>To address critical gaps in our understanding of benthic ecosystems in the Arctic, this study sampled macrobenthos across the Franz Josef Land archipelago during the 2020–2021 field campaign. In total, 65 benthic grab stations were analysed, and 29 stations assessed for macrofauna with ROV video recordings. The stations, located in shallow waters ranging from 11 to 176 m depth, covered a substantial portion of the archipelago. This data set is by far the largest published on the area's benthic biodiversity since the 1970s. From 143,577 specimens of macrobenthos analysed, a total of 333 taxa (257 species) were identified. Most stations were dominated by three overlapping macrobenthic assemblages: (1) S<em>trongylocentrotus</em> sp. <em>– Ophiura robusta</em>, (2) <em>Hiatella arctica – O. robusta</em> and (3) <em>Astarte</em> spp. Exceptionally high biomass of macrobenthos was noted, reaching 3.9 kg m⁻², possibly the highest documented for the Eurasian Arctic shelf. This finding suggests a greater potential for carbon sequestration in this region than previously understood. High spatial heterogeneity and high benthic biomass can be attributed to the complex hydrodynamic regime and abundance of hard substrates in these shallow waters, which also makes the area attractive for benthic predators, in particular the Atlantic walrus (<em>Odobenus rosmarus rosmarus</em>).</div></div>","PeriodicalId":20316,"journal":{"name":"Polar Science","volume":"46 ","pages":"Article 101211"},"PeriodicalIF":2.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reindeer in a desert (Desertification in the Arctic because of overgrazing)","authors":"Igor Popov","doi":"10.1016/j.polar.2025.101234","DOIUrl":"10.1016/j.polar.2025.101234","url":null,"abstract":"<div><div>Despite the fact that the Arctic region is not typically characterized as arid, it is still susceptible to desertification<span>. In the tundra stretching from the White Sea to the Ob River, patches of sand devoid of vegetation, spanning several hectares, are quite common. A total of 34 clusters of such areas have been identified, covering a combined area of 1,685,750 ha. Among them are three sandy deserts, each spanning several hundred hectares. This phenomenon has been attributed to overgrazing by reindeer. Reindeer, preferring elevated and solid terrain, tend to concentrate in relatively small areas, while wetlands and mires<span> occupy vast expanses around. The resulting overgrazing leads to the loss of vegetation and soil in several hotspots. The formation of these deserts or semi-deserts has been exacerbated by the practices of the local Nenets people. Since remote times they tried to expand their herds even if they cannot consume them, considering them as something like bank account. With the continuous increase in Nenets herders and, consequently, the number of reindeer, the desertification of the tundra is a looming reality. Traditional land use practices, in this case, fail to ensure sustainable development.</span></span></div></div>","PeriodicalId":20316,"journal":{"name":"Polar Science","volume":"46 ","pages":"Article 101234"},"PeriodicalIF":2.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural evolution of the Instekleppane, Lützow-Holm Complex: Deformation patterns in high-grade zones of east Antarctica","authors":"Lakshmanan Sreehari ,&nbsp;Tatsuro Adachi ,&nbsp;Yuki Mori ,&nbsp;Tomokazu Hokada","doi":"10.1016/j.polar.2025.101249","DOIUrl":"10.1016/j.polar.2025.101249","url":null,"abstract":"<div><div><span><span>This research marks the first comprehensive structural analysis of the Instekleppane outcrop, located in the western part of the Lützow-Holm Complex (LHC), a Neoproterozoic-Cambrian high-grade metamorphic terrane, East </span>Antarctica. The ∼1 km</span>²<span><span><span> outcrop, situated southwest of Syowa Station and east of Shirase Glacier, was investigated as part of the 65th Japanese Antarctic Research Expedition (JARE-65). The lithological assemblage includes felsic orthopyroxene-biotite gneiss, garnet-bearing felsic </span>granulite, Mg-Al-rich gneiss, mafic hornblende-orthopyroxene-clinopyroxene granulite, </span>ultramafic rocks, and minor granitic intrusions. Six stages of deformation (D</span>₀–D₅) were identified, of which four (D₀ to D₃) are considered as major events. D₀ corresponds to the development of primary sedimentary or magmatic layering and D₁ corresponds to initial foliation development. While D₂ is characterized by earlier layer parallel stretching and the formation of B₂₁ mafic boudins followed by two folding phases: F₂₁ (recumbent, isoclinal, intrafolial folds) and F₂₂ (overturned folds), both with E–W trending axial planes. D₃ is marked by upright to plunging open folds (F₃) with NW–SE axial planes. D₄ corresponds to reverse shear zones, and D₅<span> involves strike-slip shear zones. The deformation history<span><span> at the Instekleppane shares similarities with nearby high-grade terranes such as Rundvågshetta and Langhovde, suggest a regionally consistent ductile deformation history within the LHC during its </span>tectonic evolution.</span></span></div></div>","PeriodicalId":20316,"journal":{"name":"Polar Science","volume":"46 ","pages":"Article 101249"},"PeriodicalIF":2.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}