Island Arc最新文献

{"title":"First Constraints on the Pressure–Temperature–Time Evolution of the Vijayan Complex, Sri Lanka: Implications for Its Position in Gondwana","authors":"Ruwanthika Kumari,&nbsp;P. L. Dharmapriya,&nbsp;Xiaofang He,&nbsp;S. P. K. Malaviarachchi,&nbsp;Pahan Abewardana,&nbsp;Lei Zhao","doi":"10.1111/iar.70003","DOIUrl":"https://doi.org/10.1111/iar.70003","url":null,"abstract":"<div>\u0000 \u0000 <p>Sri Lanka occupies a pivotal geological position within East Gondwana, featuring four prominent high-grade Precambrian lithotectonic units: the Highland Complex (HC), the Wanni Complex, the Vijayan Complex (VC) and the Kadugannawa Complex. Despite reasonable geochemical and geochronological investigations into rocks in the VC, a comprehensive understanding of their petrological characteristics, particularly their pressure–temperature–time evolution, remains limited, impeding accurate terrane correlations. In this study, a detailed analysis of mineral assemblages, reaction textures, and U–Pb zircon ages in samples collected from the eastern margin of the HC to the eastern coast, in the VC were conducted. Results indicate that the VC preserved textural evidence for prograde dehydration reactions indicating upper amphibolite to granulite facies transition. The peak metamorphism is followed by a stage of near isobaric cooling stage. Conventional geothermobarometric analysis coupled with phase equilibria modeling of VC gneisses reveal peak metamorphic P–T conditions of 790°C–830°C and 7–8 kbar. Retrograde metamorphism has occurred until the temperature decreased to 740°C. The U–Pb zircon dates at ca. 1010–960 Ma suggest protolith ages of the VC coinciding with Rodinia amalgamation and dispersal, aligning metamorphic thermal peaks at ca. 575–545 Ma with the Kuunga orogeny during Gondwana amalgamation. Our data signifies connections between the VC and both the Lurio foreland in Mozambique and the Innhovde Suite and Yamato-Belgica Complex in East Antarctica, however, the differences in metamorphic conditions and geochronological signatures necessitate further investigation into its tectonic history and paleogeographic evolution.</p>\u0000 </div>","PeriodicalId":14791,"journal":{"name":"Island Arc","volume":"34 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112414","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":"Greetings From the New Editors-In-Chief","authors":"Takashi Hasegawa,&nbsp;Yuji Ichiyama","doi":"10.1111/iar.70004","DOIUrl":"https://doi.org/10.1111/iar.70004","url":null,"abstract":"&lt;p&gt;After the 5 years of the editorial services of Akihiro Kano and Tatsuki Tsujimori from 2020 to 2024, it is an honor and privilege for us to take over the roles of Editor-in-Chief of &lt;i&gt;Island Arc&lt;/i&gt; from January 2025. On behalf of the new editorial board, we would like to express our deepest gratitude to the previous editorial team for their exceptional contributions to the journal.&lt;/p&gt;&lt;p&gt;&lt;i&gt;Island Arc&lt;/i&gt;, the official international journal of the &lt;i&gt;Geological Society of Japan&lt;/i&gt;, was established in 1992. Over the past three decades, &lt;i&gt;Island Arc&lt;/i&gt; has served as a vital platform for discussions among the international earth science community and advancing our understanding of the diverse geological processes involved in plate convergent margins in circum-Pacific regions. The dedication of the previous editorial board resulted in the drastic enhancement of the Journal Impact Factor (JIF) by Clarivate Analytics from 2019 to 2022 (up to 2.442). However, despite their efforts, the value unfortunately declined to 1.0 in 2023, partly due to changes in the JIF calculation methodology. Similarly, Elsevier's CiteScore dropped from 3.5 in 2022 to 2.9 in 2023, although these values remain higher than those recorded during the 2016–2019 period (1.6–2.6). Please note that journals with a low annual article count, such as &lt;i&gt;Island Arc&lt;/i&gt;, are more susceptible to significant fluctuations in their journal-level metrics. Furthermore, citations from the &lt;i&gt;Journal of the Geological Society of Japan&lt;/i&gt; are not factored into the JIF calculation. Nevertheless, it is clear that maintaining the journal's high quality and enhancing its reputation remain key responsibilities. To this end, we encourage the community to submit exciting and high-impact manuscripts to &lt;i&gt;Island Arc&lt;/i&gt;. Our editorial team is committed to ensuring professional, efficient, and fair manuscript handling and strives for swift publication.&lt;/p&gt;&lt;p&gt;The previous editorial team implemented several significant changes, including renewing journal's cover art, and transitioning to a “one issue per year” format following the cessation of print editions to move entirely to online publication. They also made considerable efforts to accelerate the peer-review process, particularly through the recent transition from ScholarOne Manuscripts to Wiley's brand-new Research Exchange (ReX) platform. While the new ReX platform still requires further refinement, this modern web-based system benefits not only authors but also reviewers. In parallel with these efforts, &lt;i&gt;Island Arc&lt;/i&gt; continues to provide significant value by not requiring an article processing charge (APC) for publication. Additionally, if an author's institution has an open-access publishing agreement with Wiley, articles can be published as open-access at no cost (or with a substantial discount) to the authors. In recent years, &lt;i&gt;Island Arc&lt;/i&gt; has notably increased international readership, particularly from the U.S. and China, in rec","PeriodicalId":14791,"journal":{"name":"Island Arc","volume":"34 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/iar.70004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Holocene Temperature Trend Inferred From Oxygen and Carbonate Clumped Isotope Profiles of a Stalagmite Collected From a Maritime Area of Central Honshu, Japan","authors":"Akira Murata,&nbsp;Taiki Mori,&nbsp;Hirokazu Kato,&nbsp;Hsun-Ming Hu,&nbsp;Chuan-Chou Shen,&nbsp;Ryoko Senda,&nbsp;Kenji Kashiwagi,&nbsp;Akihiro Kano","doi":"10.1111/iar.70002","DOIUrl":"https://doi.org/10.1111/iar.70002","url":null,"abstract":"<p>The Holocene has been extensively researched concerning past climates, and various proxy records have provided information on temperature changes during this period. Many studies have found a period of elevated temperatures during the Middle Holocene, known as the Holocene Thermal Maximum (HTM). However, the exact timing of this warm period varies depending on the region. Here, we investigate a stalagmite collected from Kiriana Cave, which covers two intervals: 13.7–12.4 and 10.4–1.16 thousand years ago (ka before 1950 AD). In previous studies at this cave site, the meteoric water δ¹⁸O is not sensitive to the precipitation amount and the seasonality of precipitation but follows the seawater δ¹⁸O. By using these assumptions of the meteoric water δ¹⁸O, the paleo-temperature was quantitatively reconstructed from the stalagmite δ¹⁸O and the carbonate clumped isotopes. These paleoclimatic proxies indicated that the temperature at the cave site significantly changed during the Holocene. Based on the records of the stalagmite δ¹⁸O, the HTM occurred between 10.9 and 6.7 ka, reaching its peak temperature (15.0°C) around 7.0 ka. At this time, temperatures were approximately 3°C warmer than present. The timing of the warm interval aligns closely with marine temperature records but is notably earlier than terrestrial records from Europe and North America. Cooling began at 6.5 ka, and the decreased temperature stabilized in an interval between 6.0 and 4.5 ka. The temperature decreased further to the lowest value (~10.0°C) at 3.0 ka. After this cooling maximum, the climate gradually became warm until the stalagmite stopped growing at 1.16 ka. Our Holocene temperature reconstruction is consistent with the temperature and palaeoceanographic records obtained from reef corals and marine sediments in and around the Japanese Islands in terms of the amplitude of change, warm middle Holocene, and cool late Holocene.</p>","PeriodicalId":14791,"journal":{"name":"Island Arc","volume":"34 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/iar.70002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143119490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geological and Geomorphological Causes of Two Historical Deep-Seated Catastrophic Landslides Induced by the 1892 Heavy Rainfall Event in the Shimanto Accretionary Complex, Tokushima, Japan","authors":"Noriyuki Arai","doi":"10.1111/iar.70000","DOIUrl":"https://doi.org/10.1111/iar.70000","url":null,"abstract":"<div>\u0000 \u0000 <p>The catastrophic Hose and Ogawatuetui landslides occurred coincidentally in 1892 following heavy rainfall in the upper reaches of the Kaifu River, Tokushima, Japan. The area is underlain by a steeply dipping coherent formation with many faults, and lies in the Shimanto Belt where deep-seated catastrophic landslides are known to occur following heavy rainfall and large subduction zone earthquakes. The main geological and geomorphological causes of the landslides were found to include local relief ≥ 350 m (1200-m-diameter analysis windows); knickpoints and slope breaks at 90–150 m above sea level, competent massive and thick-bedded sandstone with open fractures on the upper slope, and alternating thin beds of incompetent fine sandstone and shale beds of high deformability and low permeability on the lower slope.</p>\u0000 </div>","PeriodicalId":14791,"journal":{"name":"Island Arc","volume":"33 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142724235","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":"Distribution of Stable and Radioactive Iodine Dissolved in Interstitial Waters Within the Subduction Input Sediment Offshore Sumatra Subduction Zone","authors":"Satoko Owari,&nbsp;Hitoshi Tomaru,&nbsp;Hiroyuki Matsuzaki","doi":"10.1111/iar.12542","DOIUrl":"https://doi.org/10.1111/iar.12542","url":null,"abstract":"<p>Subduction input (sediment before subduction)-located seaward of the trench is one of the largest iodine budgets on the earth's surface. It is responsible for the deep iodine source in the landward of the trench where the iodine flux is significantly high. However, the distribution in the subduction input is poorly understood, contrary to the subducted sediment (sediment after subduction) landward of the trench. We determined iodine concentration and ¹²⁹I/¹²⁷I ratio of the interstitial water from the seafloor to the basement continuously at a subduction input site ~250 km southwest of the Sunda Trench for the first time to understand the iodine distribution. In the study site, the iodine concentration increased with depth linearly to ~100 μM at 1400 mbsf. Iodine isotope ratios (¹²⁹I/¹²⁷I) remained constant as low as ~400 × 10⁻¹⁵ from 400 to 1400 mbsf, suggesting that the iodine distribution was mainly controlled by old iodine-rich fluid (low ¹²⁹I/¹²⁷I ratio and high iodine concentration) supplied along the basement and by mixing with seawater (high ¹²⁹I/¹²⁷I ratio and low iodine concentration). The linear iodine gradient was changed at ~200 and ~1200 mbsf, where the methane concentration rapidly increased and total organic carbon decreased. This indicates that young iodine (low ¹²⁹I/¹²⁷I ratio) was released from the organic materials in the sediment into the interstitial water at these depths. This is the first observation of in situ iodine/methane addition to the interstitial water associated with the organic decomposition. The iodine concentration and ¹²⁹I/¹²⁷I ratio indicated that iodine in the subduction input was either derived from the in situ sediment or allochthonous fluid transported from subducted sediment due to differences in physical properties and permeability. This allochthonous iodine transportation to the subduction input may broaden the concept of the iodine cycling in the subduction system, including the sediments after and before subduction.</p>","PeriodicalId":14791,"journal":{"name":"Island Arc","volume":"33 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/iar.12542","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142724259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preface for the Thematic Issue: Tectono-Magmatic-Metallogenesis in Eastern China","authors":"Xilin Zhao,&nbsp;Shengyao Yu,&nbsp;Guangfu Xing,&nbsp;Tatsuki Tsujimori","doi":"10.1111/iar.12540","DOIUrl":"https://doi.org/10.1111/iar.12540","url":null,"abstract":"","PeriodicalId":14791,"journal":{"name":"Island Arc","volume":"33 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142641812","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":"Spatial and Temporal Exhumation of the Northeastern China: Insights From Low Temperature Thermochronology","authors":"Yannan Wang,&nbsp;Lian Chen,&nbsp;Jin Zhang,&nbsp;Cunliang Zhao,&nbsp;Heng Zhao,&nbsp;Wenmu Guo,&nbsp;Junfeng Qu,&nbsp;Yingjie Li","doi":"10.1111/iar.12541","DOIUrl":"https://doi.org/10.1111/iar.12541","url":null,"abstract":"<div>\u0000 \u0000 <p>The northeastern (NE) China has undergone a long-term tectonic history involving subduction–accretion of the Siberian Craton, North China Craton, and Western Pacific Plate, providing an ideal target for understanding the interactions between cratons and the Pacific oceanic lithosphere. However, the Mesozoic-Cenozoic geological and topographic evolutions of the NE China remain unclear. Here, we present new apatite fission track data from Precambrian metamorphic rocks in the Lesser Hinggan Mountains. Apatite fission track dating yielded a group of central ages ranging from 130 ± 18 to 151 ± 11 Ma with mean track lengths varying between 13.67 ± 0.13 and 14.49 ± 0.08 μm. Thermal modeling results revealed a rapid cooling event at ca. 165–140 Ma, which was related to compressional deformations driven by shallow subduction of the Paleo-Pacific Ocean Plate beneath the northeastern China. Furthermore, regional low temperature thermochronological datasets in NE China show additional three rapid exhumation stages, including the Early Jurassic (ca. 200–180 Ma), Early Cretaceous (ca. 120–100 Ma), and Late Cretaceous (ca. 80–60 Ma). They were associated with closure of the Mudanjiang Ocean, slab rollback of the Paleo-Pacific Plate, and collision between the Okhotomorsk Block and southeastern Asia. As the Cenozoic, slow exhumation has emerged throughout the northeastern China.</p>\u0000 </div>","PeriodicalId":14791,"journal":{"name":"Island Arc","volume":"33 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142641811","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 Trace-Element Compositions in Cenozoic Granitoids in Japan: Revised Discrimination Diagrams for Zircons in I-Type, S-Type, and A-Type Granites","authors":"Yusuke Sawaki,&nbsp;Hisashi Asanuma,&nbsp;Shuhei Sakata,&nbsp;Mariko Abe,&nbsp;Hisahiro Ueda,&nbsp;Wataru Fujisaki,&nbsp;Takeshi Ohno","doi":"10.1111/iar.12539","DOIUrl":"https://doi.org/10.1111/iar.12539","url":null,"abstract":"<p>Owing to high resistance to alteration, detrital zircons retain information about their formation ages and parental magmas for a long period of time. Many geochemical researchers have proposed various indicators for zircon to constrain tectonic settings and to identify source rock. Because most detrital zircons analyzed by geochronologic studies are derived primarily from granitoids, we focus on the classification of zircon within granitoids. In the style of alphabetical classification scheme (Igneous, I; Sedimentary, S; and Alkaline, A types), some discrimination diagrams have been proposed. To improve the database and enhance discriminating studies, we examined trace-element compositions of zircons extracted from some Cenozoic granitoids exposed in the Japan Islands. The zircons showed systematic differences in Nb, Ta, Ce, and P contents. Zircons in Oceanic Arc I-type granite are poor in Nb and Ta, and these signatures clearly reflect those elements in their parental bodies. Despite their low abundance at the whole-rock level, zircons in Oceanic Arc I-type granite are characterized by high Ce content. This is attributable to the relatively oxidizing conditions of Oceanic Arc I-type magma. Zircons in S-type granite are characterized by high P and low Ce contents. The former can be explained by high apatite solubility in Al-rich magma, whereas the reducing environment of S-type magma is accountable for the latter. The zircon crystallized at the later stage during S-type granite solidification is slightly depleted in Nb and Ta. This is attributable to the depletion of these elements in the magma by Ti-bearing minerals such as ilmenite prior to zircon crystallization. In analogy with whole-rock composition, zircons in transitional I-A-type granite have intermediate composition between I-type and A-type zircons. On the basis of the updated database, we demonstrated that the Nb/P–Ce/P or Ta/P–Ce/P crossplots are the most useful for discriminating zircons in Oceanic Arc I-type, I-type, S-type, and A-type granites.</p>","PeriodicalId":14791,"journal":{"name":"Island Arc","volume":"33 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/iar.12539","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to “Bringing the Submarine Mariana Arc and Backarc Basin to Life for Undergraduates and the Public”","authors":"","doi":"10.1111/iar.12538","DOIUrl":"https://doi.org/10.1111/iar.12538","url":null,"abstract":"<p>Stern, R. J. 2024. “Bringing the Submarine Mariana Arc and Backarc Basin to Life for Undergraduates and the Public.” <i>Island Arc</i> 33, no. 1: e12533. https://doi.org/10.1111/iar.12533.</p><p>Figures 3 and 4 captions should have been switched as shown below.</p><p>FIGURE 3(A) Front of a typical remotely operated vehicle (ROV). Note locations of key features: Lights, cameras (both still and video), manipulator arms, and sample baskets. Modified from NOAA ROV factsheet https://oceanexplorer.noaa.gov/edu/materials/rov-fact-sheet.pdf. (B) A typical ROV control room, from https://schmidtocean.org/cruise-log-post/technology-at-the-seafloor/.</p><p>FIGURE 4Schematic section through the upper 140 km of the Mariana convergent margen and subduction zone, showing the principal crustal and upper mantle components and their interactions. Note that the location of the “mantle wedge” (unlabeled) is that part of the mantle beneath the overriding plate and between the trench and the most distal part of the arc where subduction-related igneous or fluid activity is found. Modified after Stern (2002). MF, magmatic front.</p><p>We apologize for this error.</p>","PeriodicalId":14791,"journal":{"name":"Island Arc","volume":"33 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/iar.12538","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142447708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent Efforts to Improve the Accuracy and Precision of Carbonate Clumped-Isotope Analysis","authors":"Kazuma Oikawa,&nbsp;Osamu Abe,&nbsp;Yasufumi Iryu","doi":"10.1111/iar.12537","DOIUrl":"https://doi.org/10.1111/iar.12537","url":null,"abstract":"<p>The carbonate clumped-isotope thermometer, a relatively recent innovation, is based on the strong relationship between ¹³C-¹⁸O bond abundance in carbonates and their formation temperature. It can measure temperatures solely based on the CO₂ extracted from carbonates and has attracted attention as it accurately reconstructs surface water temperatures on a geological timescale. However, at the time of development, there were many limitations in its application to paleoenvironmental reconstruction such as the large sample size (10 mg), the complicated organic contaminant removal process, and the lack of internationally recognized carbonate standards, and improvements in the measurement method were required. Here, we review the studies conducted since the thermometer development to improve the accuracy and precision of carbonate clumped-isotope analysis. Finally, we discuss advanced carbonate clumped-isotope analysis methods, including laser spectroscopy.</p>","PeriodicalId":14791,"journal":{"name":"Island Arc","volume":"33 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/iar.12537","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142435384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}