{"title":"碳酸盐矿物分布与同位素分选:一种沉积环境解释方法，美国怀奥明绿河组，美国","authors":"Glenn M. Mason , Ronald C. Surdam","doi":"10.1016/0009-2541(92)90010-3","DOIUrl":null,"url":null,"abstract":"<div><p>Carbonate mineral phases were investigated with respect to distribution and isotopic composition from core holes in the Green River Formation, Wyoming, an ancient lake complex. Mineral distribution data suggest dolomite genesis on a carbonate mudflat surrounding a central lake facies with transportation and subsequent later alteration in the lacustrine facies. Calcite was the dominant carbonate mineral deposited in the lacustrine facies. Samples, investigated by stable isotopes, representing each member of the Green River Formation, displayed isotopic values for δ<sup>13</sup>C of from − 1.3 to + 7.5‰ and for δ<sup>18</sup>C of − 6.0 to −0.8‰. Isotopic values representing modern and paleolacustrine sequences were compared. δ<sup>13</sup>C-values in the Green River Formation sediments were below values that might be expected from sediments which formed in a stratified lake. Mineral distribution and stable isotope evaluations demonstrated evidence to support a playa-lake depositional environment.</p></div>","PeriodicalId":100231,"journal":{"name":"Chemical Geology: Isotope Geoscience section","volume":"101 3","pages":"Pages 311-321"},"PeriodicalIF":0.0000,"publicationDate":"1992-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0009-2541(92)90010-3","citationCount":"16","resultStr":"{\"title\":\"Carbonate mineral distribution and isotope-fractionation: An approach to depositional environment interpretation, Green River Formation, Wyoming, U.S.A.\",\"authors\":\"Glenn M. Mason , Ronald C. Surdam\",\"doi\":\"10.1016/0009-2541(92)90010-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Carbonate mineral phases were investigated with respect to distribution and isotopic composition from core holes in the Green River Formation, Wyoming, an ancient lake complex. Mineral distribution data suggest dolomite genesis on a carbonate mudflat surrounding a central lake facies with transportation and subsequent later alteration in the lacustrine facies. Calcite was the dominant carbonate mineral deposited in the lacustrine facies. Samples, investigated by stable isotopes, representing each member of the Green River Formation, displayed isotopic values for δ<sup>13</sup>C of from − 1.3 to + 7.5‰ and for δ<sup>18</sup>C of − 6.0 to −0.8‰. Isotopic values representing modern and paleolacustrine sequences were compared. δ<sup>13</sup>C-values in the Green River Formation sediments were below values that might be expected from sediments which formed in a stratified lake. Mineral distribution and stable isotope evaluations demonstrated evidence to support a playa-lake depositional environment.</p></div>\",\"PeriodicalId\":100231,\"journal\":{\"name\":\"Chemical Geology: Isotope Geoscience section\",\"volume\":\"101 3\",\"pages\":\"Pages 311-321\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1992-09-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0009-2541(92)90010-3\",\"citationCount\":\"16\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical Geology: Isotope Geoscience section\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0009254192900103\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Geology: Isotope Geoscience section","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0009254192900103","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Carbonate mineral distribution and isotope-fractionation: An approach to depositional environment interpretation, Green River Formation, Wyoming, U.S.A.
Carbonate mineral phases were investigated with respect to distribution and isotopic composition from core holes in the Green River Formation, Wyoming, an ancient lake complex. Mineral distribution data suggest dolomite genesis on a carbonate mudflat surrounding a central lake facies with transportation and subsequent later alteration in the lacustrine facies. Calcite was the dominant carbonate mineral deposited in the lacustrine facies. Samples, investigated by stable isotopes, representing each member of the Green River Formation, displayed isotopic values for δ13C of from − 1.3 to + 7.5‰ and for δ18C of − 6.0 to −0.8‰. Isotopic values representing modern and paleolacustrine sequences were compared. δ13C-values in the Green River Formation sediments were below values that might be expected from sediments which formed in a stratified lake. Mineral distribution and stable isotope evaluations demonstrated evidence to support a playa-lake depositional environment.
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