Meteoritics & Planetary Science最新文献

{"title":"88th Annual Meeting of the Meteoritical Society 2026: Contents","authors":"","doi":"10.1111/maps.70225","DOIUrl":"https://doi.org/10.1111/maps.70225","url":null,"abstract":"","PeriodicalId":18555,"journal":{"name":"Meteoritics & Planetary Science","volume":"61 S1","pages":"S2-S47"},"PeriodicalIF":3.2,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maps.70225","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149029025","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":"2026 Barringer Medal and Award for Philippe Claeys","authors":"Christian Koeberl","doi":"10.1111/maps.70200","DOIUrl":"https://doi.org/10.1111/maps.70200","url":null,"abstract":"<p>Philippe Claeys (Figure 1) is currently a full professor at the Vrije Universiteit Brussel (VUB), Brussels, Belgium and Director of the VUB Large Research Group (LRG): Archaeology, Environmental changes and Geo-Chemistry. He is also visiting professor at the Pacific Center for Isotopic and Geochemical Research (PCIGR), Department of Earth, Ocean and Atmospheric Sciences (EOAS), at the University of British Columbia, Vancouver, Canada. Philippe is a geologist, geochemist, and planetary scientist interested in documenting global changes at different scales and times, and in particular, the consequences of asteroid and comet impacts on the evolution of the bio-geosphere, using geochemical proxies coupled with a cyclostratigraphy and astrochronology approach. Other research topics focus on (micro)meteorites, paleoclimate reconstructions, and bio-geo-archaeology. The interdisciplinary research unit he heads at the Vrije Universiteit Brussel (VUB) unites over 100 geologists, chemists, biologists, engineers, and archaeologists and operates an analytical arsenal composed of isotope isotope ratio mass spectrometers, four Inductively Coupled Plasma Mass Spectrometers, a clean-lab, and other instruments (X-Ray Fluorescence, Fourier Transform Infra-Red Spectroscopy…). In 2009, he initiated a collaboration with Japan for the recovery of Antarctic meteorites in East Antarctica that more than tripled the Belgian collection.</p><p>Philippe obtained a PhD in 1993 from the University of California at Davis (UC Davis) with Stan Margolis and Walter Alvarez as advisors. He then carried out postdoctoral research at UC Los Angeles (UCLA) in John Wasson's lab, measuring platinum group elements using neutron activation analysis. In January 1994, he moved back to UC Berkeley as a research geologist in the team of Walter Alvarez to continue working on the Chicxulub crater in Yucatan. In the late 1990s, Dieter Stöffler recruited him as a senior scientist at the Museum of Natural History in Berlin, where he established and managed the electron microprobe and X-ray fluorescence instruments. In 2001, he accepted a professorship at the Vrije Universiteit Brussel (VUB). In addition, since he went to Brussels, he was also a Guest Professor at the universities in Ghent, Leuven, and Liège, as well as at the Nanjing Institute of Geology and Paleontology.</p><p>Philippe has been incredibly active as a supervisor and mentor—as of 2026, he has 8 ongoing PhD students, 28 defended doctorates, 7 ongoing and 30 previous postdoctoral researchers, plus about 60 Master's or bachelor theses completed since 2001. In addition, he has raised abundant project funding: 17 currently running projects budget of >6 million € including instruments acquisition, personnel support, lab management, and consumables. He is a very active member of our scientific community; for example, he was until recently the chair of the Executive Committee of the International Continental Scientific Drilling Program ","PeriodicalId":18555,"journal":{"name":"Meteoritics & Planetary Science","volume":"61 S1","pages":"S556-S558"},"PeriodicalIF":3.2,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maps.70200","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149029127","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":"88th Annual Meeting of the Meteoritical Society 2026: Abstracts","authors":"","doi":"10.1111/maps.70226","DOIUrl":"https://doi.org/10.1111/maps.70226","url":null,"abstract":"","PeriodicalId":18555,"journal":{"name":"Meteoritics & Planetary Science","volume":"61 S1","pages":"S48-S551"},"PeriodicalIF":3.2,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maps.70226","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149029026","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":"2026 Nier Prize of the Meteoritical Society for Dr. Martin Suttle","authors":"Sara S. Russell","doi":"10.1111/maps.70197","DOIUrl":"https://doi.org/10.1111/maps.70197","url":null,"abstract":"<p>Dr. Suttle was not always destined for a career in planetary science. As a child, he was inspired by Stephen Jay Gould's “Wonderful Life” on the evolution of Cambrian fauna, which initially set him on a path toward paleontology. However, as an undergraduate in geology at Imperial College London, the enthusiastic teaching of Dr. Matt Genge and Dr. Natasha Stephen proved transformative. Motivated by these experiences, he undertook a PhD with Dr. Genge, focusing on the comparison of near-infrared spectral features of extraterrestrial dust with those of recent asteroid families. Although this ambitious project ultimately confronted the compounded challenges of space weathering and atmospheric entry heating—limitations that rendered definitive conclusions rather elusive—Dr. Suttle demonstrated remarkable initiative and independence. Rather than be deterred, he pivoted to study the mineralogy and petrology of Antarctic micrometeorites and their comparison to carbonaceous chondrites.</p><p>Notably, he also developed a novel and entirely self-directed line of investigation. Drawing on his familiarity with the chalk hills of his home region in the North Downs (United Kingdom), he devised a method to extract fossil micrometeorites by dissolving chalk in hydrochloric acid—conducted in his parents' garden. This innovative work demonstrated that fossil micrometeorites, though relatively straightforward to recover, are typically altered during preservation (in a manner analogous to the fossilization of biological material), opening new avenues for understanding how the micrometeorite flux has varied through geological time.</p><p>Following his PhD, Dr. Suttle held a postdoctoral position at the University of Pisa with Dr. Luigi Folco where he studied the enigmatic “giant” Transantarctic Mountain (TAM) micrometeorites. Here, he used a combination of μCT and O-isotopes to better understand the pre-atmospheric properties of an anomalous population of micrometeorites with unusual <sup>16</sup>O-poor compositions, material seemingly absent from the meteorite record, which may represent aqueously altered chondritic material from a new chondrite group.</p><p>Dr. Suttle subsequently came to work with our group at the Natural History Museum, in London where he undertook hydrothermal experiments to aqueously alter the CO chondrite Kainsaz, in an attempt to “<i>make a CM chondrite</i>” and in doing so better understand the key variables that controlled the style and extent of aqueous alteration on water-rich planetesimals. His interest in aqueous alteration resulted in an influential review of CM chondrites (Suttle et al., <span>2021</span>). He later joined the Open University as a faculty member in their long-established planetary sciences group, where he has rapidly established himself as a leading figure in the field. His arrival in Milton Keynes coincided with the fall of the Winchcombe (CM2) meteorite in nearby Gloucestershire, the first recovered UK fall in 30 ","PeriodicalId":18555,"journal":{"name":"Meteoritics & Planetary Science","volume":"61 S1","pages":"S559-S560"},"PeriodicalIF":3.2,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maps.70197","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149029128","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":"2026 Service Award for Dr. Narendra Bhandari","authors":"Gopalan Srinivasan","doi":"10.1111/maps.70189","DOIUrl":"https://doi.org/10.1111/maps.70189","url":null,"abstract":"<p>It is a great honor to recognize the services of Dr. Narendra Bhandari to our community with the 2026 <i>Service Award</i> of The Meteoritical Society. Dr. Narendra Bhandari's sustained effort over several decades for promoting an interest in meteorites is inspirational for outreach efforts for many. He has involved fellow citizens from all walks of life in the recovery of meteorites (falls and finds) and encouraged scientists from various disciplines to participate in characterization of these meteorites and developed a successful model of public-scientist participation His efforts have promoted the acquisition, classification of new samples for research and promoted an overall scientific literacy about meteorites among the general population and better understanding of meteorite research among scientists who usually work in other disciplines. Some of these recovered meteorites have turned out to be extremely valuable for scientific research and have resulted in seminal results (Figure 1).</p><p>Dr. Narendra Bhandari has worked as a senior space scientist at the Physical Research Laboratory (PRL) of ISRO, Ahmedabad for over three decades. He graduated with M.Sc. in Physics (1960) from Rajasthan University, India, and Ph.D. (1967) from Tata Institute of Fundamental Research, Mumbai, India. where he initiated study of meteorites. He has worked extensively on cosmic ray interactions with meteorite parent bodies and Moon resulting in significant scientific contributions to the understanding of cosmic ray exposure ages, impact gardening and reworking of regolith due to impact to name a few. He was among the first group of scientists to study the samples of moon brought by Apollo missions of NASA and Luna missions of USSR using tracks produced by cosmic rays to understand various aspects of Lunar evolution. Many have known him as a senior colleague at the Physical Research Laboratory, and remember their introduction to the idea of locating a fall. In his endeavor, Dr. Bhandari involves citizens (non-specialists) or schoolchildren. The famous Dhajala Meteorite shower in January 1976 was pursued for more than 1 year (Figure 2).</p><p>Dr. Bhandari collected more than 80 kg in more than 500 meteorite fragments with the help of school children. Similarly for the Piplia Kalan eucrite in the summer of 1996, Dr. Anil Shukla recalls the sheer passion of Dr. Bhandari to track the probable orbit by interacting with local people and schools and finally locating the fall.</p><p>Dr. Bhandari did not have the supporting infrastructure of a reliable network of sky-monitoring cameras to track a fireball or a formal institutional framework to support such activity. He developed an All-sky camera network of over three stations through Physical Research Laboratory (Figure 3). However, the project faced several challenges and the ease of internet-based communication network was not available at that time. In his efforts to collect meteorite falls, Dr. Bhandari has bee","PeriodicalId":18555,"journal":{"name":"Meteoritics & Planetary Science","volume":"61 S1","pages":"S561-S564"},"PeriodicalIF":3.2,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maps.70189","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149029129","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":"2026 Leonard Medal for Marc Chaussidon","authors":"François Robert","doi":"10.1111/maps.70198","DOIUrl":"https://doi.org/10.1111/maps.70198","url":null,"abstract":"<p>I first met Marc in Perth, Australia, at the Meteoretical Society meeting in 1990. He was working on boron isotopes in terrestrial rocks. For these measurements, he was using the old Cameca's 3f ion microprobe. After a few minutes of discussion, he asked me whether this type of measurement could be of any interest in cosmochemistry! At that time, I was unaware of the role of the so-called LiBeB in the nucleosynthetic models addressing the issue of the origin of the chemical elements in the Universe. Thus, we immersed ourselves in reading Hubert Reeves' masterpieces. It was a pivotal moment. Our scientific collaboration blossomed into a lasting friendship.</p><p>In the 1990s, Marc worked at the CRPG in Nancy. Our ongoing discussions, in which Marc expressed continuously his desire to establish links between astronomical phenomena and the isotopic compositions of meteorites, gradually captivated his colleagues—Guy Libourel and Bernard Marty, in particular—and the CRPG became, within a few years, a hotbed of original ideas. These ideas were at the origin of the discipline's development in France and spread throughout our community, partly under the auspices of our Meteoretical Society.</p><p>The presence of large variations of the <sup>7</sup>Li/<sup>6</sup>Li and <sup>11</sup>B/<sup>10</sup>B isotope ratios in chondrules and CAIs of primitive meteorites was the proof of the existence of irradiation processes in the early solar system (Chaussidon & Robert, <span>1995</span>, <span>1998</span>) and led to the discovery of the extinct radioactivity of <sup>10</sup>Be T1/2 = 1.39 Ma. and <sup>7</sup>Be T1/2 = 53 days. These findings demonstrated the links between the irradiation processes around the young sun in its T-Tauri phase and the formation of the first refractory solids in the accretion disk (Chaussidon et al., <span>2006</span>; Gounelle et al., <span>2013</span>; Liu & Chaussidon, <span>2018</span>; McKeegan et al., <span>2000</span>; Sossi et al., <span>2017</span>).</p><p>The isotopic composition of the Sun cannot be measured precisely by spectroscopy. However, in order to compare the solar compositions with those of meteorites or planets, their precise determination is a fundamental issue because the Sun a priori stands for the original composition of the solar system. To circumvent the spectroscopic limitations, Marc's idea was to use the ion microprobe to analyze selectively the first 50-nm thickness of the minerals constituting the lunar soils. These soils have been exposed to the bombardment of the solar wind for a few hundred million to a billion years. In this respect, they may have kept a memory of the isotopic compositions of the Sun.</p><p>Because of its half-life of 0.73 Ma, <sup>26</sup>Al is one of the most powerful chronometers to establish the relative chronology of the formation of the first solids in the accretion disk, provided its distribution in the disk was homogeneous. For the first time, Marc has been able ","PeriodicalId":18555,"journal":{"name":"Meteoritics & Planetary Science","volume":"61 S1","pages":"S552-S555"},"PeriodicalIF":3.2,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maps.70198","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149029219","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":"88th Annual Meeting of the Meteoritical Society 2026: Cover","authors":"","doi":"10.1111/maps.70224","DOIUrl":"https://doi.org/10.1111/maps.70224","url":null,"abstract":"<p>\u0000 \u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":18555,"journal":{"name":"Meteoritics & Planetary Science","volume":"61 S1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maps.70224","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149029023","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":"Characterization of coesite-bearing impact melt glass from the Hapcheon crater, Korea: Trimodal phase architecture, shock metamorphism, and implications for 40Ar/39Ar geochronology","authors":"Jin-Young Lee,&nbsp;Jeongmin Kim,&nbsp;Sei-Sun Hong","doi":"10.1111/maps.70216","DOIUrl":"https://doi.org/10.1111/maps.70216","url":null,"abstract":"<p>We present the first micrometer-scale, phase-resolved compositional characterization of impact melt glass from the Hapcheon crater (~1.4 km apparent diameter), the first confirmed impact structure on the Korean Peninsula, integrating EPMA-WDS (5 μm spot), confocal Raman spectroscopy (&lt;1 μm spot), XRD, and ⁴⁰Ar/³⁹Ar step-heating geochronology. EPMA of 37 points resolves three compositionally distinct groups separated by a clear compositional gap: silica-glass cores (CORE; <i>n</i> = 23; 98.4 wt% SiO₂, K₂O 0.023 wt%), feldspathic–mafic mantling glass (MANTLE; <i>n</i> = 6; ~55 wt% SiO₂, K₂O 2.24 wt%), and feldspathic glass clasts (UNCERTAIN; <i>n</i> = 8; ~61 wt% SiO₂, K₂O 3.10 wt%), demonstrating phase-segregated melting of the quartz and feldspathic–mafic fractions of the Cretaceous Dongmyeong target rock rather than whole-rock homogenization. Confocal Raman spectroscopy confirms coesite in 74% of 34 spectra and identifies diaplectic quartz glass, documenting micrometer-scale shock heterogeneity; a 30-point colocation data set confirms coesite within the ultralow-K₂O glass phase. The ultralow K₂O causes systematic ⁴⁰Ar/³⁹Ar age overestimation through inherited ⁴⁰Ar; all seven plateau ages (1.8–5.6 Ma) exceed the independent ¹⁰Be burial age of 1.33 Ma. Step-heating Ca/K systematics confirm multiphase assemblages, and inverse-isochron ⁴⁰Ar/³⁶Ar intercepts independently corroborate inherited ⁴⁰Ar. The youngest compositionally anchored age brackets the impact at 1.33–3.07 Ma (Plio-Pleistocene).</p>","PeriodicalId":18555,"journal":{"name":"Meteoritics & Planetary Science","volume":"61 9","pages":"2233-2257"},"PeriodicalIF":3.2,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maps.70216","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943563","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":"Cover","authors":"","doi":"10.1111/maps.70235","DOIUrl":"https://doi.org/10.1111/maps.70235","url":null,"abstract":"<p>\u0000 \u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":18555,"journal":{"name":"Meteoritics & Planetary Science","volume":"61 9","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maps.70235","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943355","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":"The pre-disruption hydrogen budgets of the tafassite and brachinite parent bodies","authors":"Liam D. Peterson,&nbsp;Conel M. O'D. Alexander,&nbsp;Jianhua Wang,&nbsp;Emma S. Bullock,&nbsp;Anthony J. Irving,&nbsp;Sune G. Nielsen","doi":"10.1111/maps.70211","DOIUrl":"https://doi.org/10.1111/maps.70211","url":null,"abstract":"<p>Recent evidence from primitive achondrites and achondrites suggests that early-formed melted planetesimals are depleted in hydrogen relative to the bulk silicate Earth. Nevertheless, evidence from angrites, the lone oxidized group of achondrites investigated to date, suggests that oxidized planetesimals may be H-rich relative to their reduced counterparts. Additionally, we have limited constraints, derived from a few ungrouped samples, on the H budgets of outer solar system planetesimals that underwent melting. Therefore, in order to provide additional constraints on the H budgets of oxidized and outer solar system planetesimals that experienced melting, we measured the H contents of silicate minerals in brachinite and tafassite group meteorites, respectively. We found that olivine, pyroxene, and plagioclase across both groups are essentially devoid of H (&lt;~2.6 μg/g H₂O_T; total H as H₂O equivalents). Based upon the thermal histories of the tafassite and brachinite parent bodies as well as their petrology and mineralogy, we argue that both bodies were essentially anhydrous prior to their disruption. This result is consistent with prior work on primitive achondrites and achondrites and requires that Earth's H budget be accounted for by accretion of thermally primitive materials, such as chondrites, comets, and ices or capture of nebular gas.</p>","PeriodicalId":18555,"journal":{"name":"Meteoritics & Planetary Science","volume":"61 9","pages":"2218-2232"},"PeriodicalIF":3.2,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943404","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}