{"title":"Experimental Investigations of Boron Isotopic Fractionation during Incorporation into Calcium Carbonate","authors":"Ryuzo Ogawa, T. Ohno, Y. Fukami, Katsuhiko Suzuki","doi":"10.46427/gold2020.1975","DOIUrl":"https://doi.org/10.46427/gold2020.1975","url":null,"abstract":"","PeriodicalId":12817,"journal":{"name":"Goldschmidt Abstracts","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77732677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Release of Trace Metals during Wildfires","authors":"C. Isley, M. Taylor","doi":"10.46427/gold2020.1150","DOIUrl":"https://doi.org/10.46427/gold2020.1150","url":null,"abstract":"","PeriodicalId":12817,"journal":{"name":"Goldschmidt Abstracts","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77858706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Hobart, J. Feinberg, Daniel S. Jones, J. Bailey
{"title":"Determining the Rate of Microbially-Mediated Pyrrhotite Dissolution Using Integrated Geochemical, Magnetic, and Genomic Analyses","authors":"K. Hobart, J. Feinberg, Daniel S. Jones, J. Bailey","doi":"10.46427/gold2020.1040","DOIUrl":"https://doi.org/10.46427/gold2020.1040","url":null,"abstract":"","PeriodicalId":12817,"journal":{"name":"Goldschmidt Abstracts","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78042841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Romaniello, G. Gilleaudeau, E. Swanner, C. Wittkop, Xinming Chen
{"title":"U(VI) Reduction in an Oligotrophic Ferruginous Ocean Analog?","authors":"S. Romaniello, G. Gilleaudeau, E. Swanner, C. Wittkop, Xinming Chen","doi":"10.46427/gold2020.2221","DOIUrl":"https://doi.org/10.46427/gold2020.2221","url":null,"abstract":"","PeriodicalId":12817,"journal":{"name":"Goldschmidt Abstracts","volume":"113 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79837449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Tracing Dissolved Trace Elements from Source to Sink: Spatio-Temporal Variability and Baseline Concentrations in Ganges River to Judge Future Changes","authors":"S. Boral, I. Sen","doi":"10.46427/gold2020.224","DOIUrl":"https://doi.org/10.46427/gold2020.224","url":null,"abstract":"","PeriodicalId":12817,"journal":{"name":"Goldschmidt Abstracts","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79914319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Perdrial, Sandra L. Walser, Christine Massey, P. Bierman
{"title":"Lead in Water and Soil: Education and Assessment Involving Vermont Middle and High School Students","authors":"N. Perdrial, Sandra L. Walser, Christine Massey, P. Bierman","doi":"10.46427/gold2020.2061","DOIUrl":"https://doi.org/10.46427/gold2020.2061","url":null,"abstract":"","PeriodicalId":12817,"journal":{"name":"Goldschmidt Abstracts","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80125816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
a complex geological history [1] that is different from the typical paired-volcano configuration of the younger Hawaiian Islands. Kaua‘i appears to consist of a single volcanic centre with an unusually large caldera and a gravity anomaly offset from this caldera to the east [1,2,3] . Previous studies of Kaua‘i shield-stage geochemistry have shown that lavas in the west part of the island have an isotopic composition distinct from those in the east (Kea vs. Loa) and that these compositions are geographically flipped relative to those on the younger Hawaiian Islands [e.g., 4,5] . To gain insight into the relationship between the geology and geochemistry of Kaua‘i shield lavas, 44 new samples were analysed for major element oxide and trace element concentrations and for Pb-Sr-Nd-Hf isotopic compositions, 90 olivine compositions were measured in nine samples, and 10 samples were dated by 40 Ar/ 39 Ar geochronology. The results show a change in geochemistry and olivine composition from west to east that coincides with an age progression from older to younger. West N ā pali is older and has a Kea-like composition, whereas east N ā pali is younger and is Loa-like; the geographically central units (Olokele and Makaweli) are transitional in both chemistry and age. Thus, the west and east portions of the N ā pali shield-stage volcanic unit formed at different times and sample different heterogeneities in the mantle source. These results have important implications for the sequence of geologic events on Kaua‘i.
这是一个复杂的地质历史，不同于年轻的夏威夷群岛典型的成对火山构造。考艾岛似乎由一个单一的火山中心和一个异常大的火山口组成，重力异常与这个火山口向东偏移[1,2,3]。以前对考艾岛盾构阶段地球化学的研究表明，该岛西部的熔岩具有与东部不同的同位素组成(Kea vs. Loa)，并且这些组成在地理上相对于较年轻的夏威夷群岛[例如4,5]。为了深入了解Kaua’i盾状熔岩的地质和地球化学关系，对44个新样品进行了主要元素氧化物和微量元素浓度以及Pb-Sr-Nd-Hf同位素组成的分析，对9个样品进行了90个橄榄石组成的测量，并对10个样品进行了40 Ar/ 39 Ar的地质年代学测定。结果表明，地球化学和橄榄石组成的变化自西向东，与年龄由老到小的进展相一致。西纳巴利语更古老，有类似kea的成分，而东纳巴利语更年轻，类似loa;地理上的中心单元(Olokele和Makaweli)在化学和年龄上都是过渡性的。因此，纳巴利盾构期火山单元的西、东两段形成时间不同，地幔源的非均质性也不同。这些结果对考阿伊岛的地质事件顺序具有重要意义。
{"title":"Volcanic Evolution of the Kauaʻi Shield, Northern Hawaiian Islands","authors":"N. Williamson, D. Weis, J. Scoates","doi":"10.46427/gold2020.2873","DOIUrl":"https://doi.org/10.46427/gold2020.2873","url":null,"abstract":"a complex geological history [1] that is different from the typical paired-volcano configuration of the younger Hawaiian Islands. Kaua‘i appears to consist of a single volcanic centre with an unusually large caldera and a gravity anomaly offset from this caldera to the east [1,2,3] . Previous studies of Kaua‘i shield-stage geochemistry have shown that lavas in the west part of the island have an isotopic composition distinct from those in the east (Kea vs. Loa) and that these compositions are geographically flipped relative to those on the younger Hawaiian Islands [e.g., 4,5] . To gain insight into the relationship between the geology and geochemistry of Kaua‘i shield lavas, 44 new samples were analysed for major element oxide and trace element concentrations and for Pb-Sr-Nd-Hf isotopic compositions, 90 olivine compositions were measured in nine samples, and 10 samples were dated by 40 Ar/ 39 Ar geochronology. The results show a change in geochemistry and olivine composition from west to east that coincides with an age progression from older to younger. West N ā pali is older and has a Kea-like composition, whereas east N ā pali is younger and is Loa-like; the geographically central units (Olokele and Makaweli) are transitional in both chemistry and age. Thus, the west and east portions of the N ā pali shield-stage volcanic unit formed at different times and sample different heterogeneities in the mantle source. These results have important implications for the sequence of geologic events on Kaua‘i.","PeriodicalId":12817,"journal":{"name":"Goldschmidt Abstracts","volume":"141 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80127578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ainsleigh Loria, Yann René Ramos Arroyo, Diana Rocha, G. Cruz-Jiménez, Catalina Alfaro de la Torre, S. Guerrero, Feiyue Wang
{"title":"Elevated Concentrations of Gaseous Elemental Mercury in Air and Surface Soil in the Historical Silver Mining Region, Guanajuato, Mexico","authors":"Ainsleigh Loria, Yann René Ramos Arroyo, Diana Rocha, G. Cruz-Jiménez, Catalina Alfaro de la Torre, S. Guerrero, Feiyue Wang","doi":"10.46427/gold2020.1637","DOIUrl":"https://doi.org/10.46427/gold2020.1637","url":null,"abstract":"","PeriodicalId":12817,"journal":{"name":"Goldschmidt Abstracts","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80205338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Isotope Effects of Water Adsorption at the Mineral Interface","authors":"J. Horita, Changjie Liu","doi":"10.46427/gold2020.1062","DOIUrl":"https://doi.org/10.46427/gold2020.1062","url":null,"abstract":"","PeriodicalId":12817,"journal":{"name":"Goldschmidt Abstracts","volume":"162 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80211328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：