Matches in SemOpenAlex for { <https://semopenalex.org/work/W4381322268> ?p ?o ?g. }
Showing items 1 to 85 of
85
with 100 items per page.
- W4381322268 endingPage "1288" @default.
- W4381322268 startingPage "1288" @default.
- W4381322268 abstract "摘要: 华北板块陆内盆地晚二叠世-早三叠世地层沉积物的物源一直存在较大争议.对华北板块中部鄂尔多斯盆地东缘（山西柳林县）上二叠统孙家沟组（2个）和下三叠统刘家沟组（2个）以及沁水盆地（山西沁水县）上二叠统孙家沟组（1个）地层砂岩样品进行了全岩地球化学分析和碎屑锆石LA-MC-ICPMS U-Pb年龄测定.364个单颗粒锆石中，古生代碎屑锆石约占21%，具有~275 Ma（218~333 Ma，65颗）和~431 Ma的两个峰值年龄（368~442 Ma，10颗）；前寒武纪碎屑锆石约占79%，具有明显的~1 888 Ma（1 562~2 222 Ma，178颗）和~2 529 Ma（2 253~3 167 Ma，111颗）两个峰值年龄.在前人研究基础上，采用最年轻单颗粒年龄（YSG）和最年轻的碎屑锆石加权平均年龄（TuffZirc）限定地层最大沉积年龄的方法，确定刘家沟组的2个样品沉积下限年龄为253±7 Ma和250±7 Ma，孙家沟组3个样品沉积下限分别为256±7 Ma（MSWD=1.1，n=31）、264±11 Ma（MSWD=4.3，n=7）、250±6 Ma（MSWD=3.6，n=6），与二叠系-三叠系沉积界限年龄251.0±0.4 Ma相接近，其中研究区刘家沟组砂岩的地质时代应归属于早三叠世，孙家沟组砂岩应归属于晚二叠世，并进一步推测华北山西地区孙家沟组沉积时代北部早于南部.根据研究区晚二叠世-早三叠世沉积环境和构造背景分析，以及潜在物源区年龄图谱对比，结合古水流野外分析结果，判别刘家沟组和孙家沟组砂岩中的前寒武纪碎屑锆石物源区为华北板块的变质基底，早古生代碎屑锆石主要来源于兴蒙造山带南缘的早古生代侵入岩，晚古生代碎屑锆石主要来源于内蒙古隆起的晚古生代侵入岩. 关键词: 华北中部 / 山西 / 晚二叠世-早三叠世 / 碎屑锆石U-Pb定年 / 物源分析 / 构造地质学" @default.
- W4381322268 created "2023-06-21" @default.
- W4381322268 creator A5002055049 @default.
- W4381322268 creator A5063131315 @default.
- W4381322268 creator A5083081598 @default.
- W4381322268 creator A5087444048 @default.
- W4381322268 creator A5092211603 @default.
- W4381322268 creator A5092211604 @default.
- W4381322268 creator A5092211605 @default.
- W4381322268 date "2023-01-01" @default.
- W4381322268 modified "2023-09-25" @default.
- W4381322268 title "华北板块中部晚二叠世-早三叠世砂岩碎屑锆石U-Pb定年及物源判别" @default.
- W4381322268 cites W1104249897 @default.
- W4381322268 cites W1964038242 @default.
- W4381322268 cites W1968570414 @default.
- W4381322268 cites W1978904154 @default.
- W4381322268 cites W1984191236 @default.
- W4381322268 cites W1989090951 @default.
- W4381322268 cites W2000655019 @default.
- W4381322268 cites W2016848487 @default.
- W4381322268 cites W2018790242 @default.
- W4381322268 cites W2019143131 @default.
- W4381322268 cites W2019259962 @default.
- W4381322268 cites W2022859730 @default.
- W4381322268 cites W2023272110 @default.
- W4381322268 cites W2024963798 @default.
- W4381322268 cites W2032860696 @default.
- W4381322268 cites W2043003723 @default.
- W4381322268 cites W2049296208 @default.
- W4381322268 cites W2061359484 @default.
- W4381322268 cites W2062158874 @default.
- W4381322268 cites W2075694434 @default.
- W4381322268 cites W2094194060 @default.
- W4381322268 cites W2124460270 @default.
- W4381322268 cites W2138522501 @default.
- W4381322268 cites W2306724485 @default.
- W4381322268 cites W2582627633 @default.
- W4381322268 cites W2637091754 @default.
- W4381322268 cites W2905941440 @default.
- W4381322268 cites W2973935890 @default.
- W4381322268 cites W2974034330 @default.
- W4381322268 cites W3128407063 @default.
- W4381322268 cites W3138611985 @default.
- W4381322268 cites W3199238993 @default.
- W4381322268 cites W3212135316 @default.
- W4381322268 cites W4224008482 @default.
- W4381322268 cites W4285159798 @default.
- W4381322268 cites W4312999906 @default.
- W4381322268 cites W868724413 @default.
- W4381322268 cites W3126724533 @default.
- W4381322268 doi "https://doi.org/10.3799/dqkx.2022.071" @default.
- W4381322268 hasPublicationYear "2023" @default.
- W4381322268 type Work @default.
- W4381322268 citedByCount "0" @default.
- W4381322268 crossrefType "journal-article" @default.
- W4381322268 hasAuthorship W4381322268A5002055049 @default.
- W4381322268 hasAuthorship W4381322268A5063131315 @default.
- W4381322268 hasAuthorship W4381322268A5083081598 @default.
- W4381322268 hasAuthorship W4381322268A5087444048 @default.
- W4381322268 hasAuthorship W4381322268A5092211603 @default.
- W4381322268 hasAuthorship W4381322268A5092211604 @default.
- W4381322268 hasAuthorship W4381322268A5092211605 @default.
- W4381322268 hasBestOaLocation W43813222681 @default.
- W4381322268 hasConcept C127313418 @default.
- W4381322268 hasConceptScore W4381322268C127313418 @default.
- W4381322268 hasIssue "4" @default.
- W4381322268 hasLocation W43813222681 @default.
- W4381322268 hasOpenAccess W4381322268 @default.
- W4381322268 hasPrimaryLocation W43813222681 @default.
- W4381322268 hasRelatedWork W1999891779 @default.
- W4381322268 hasRelatedWork W1999913942 @default.
- W4381322268 hasRelatedWork W2004200960 @default.
- W4381322268 hasRelatedWork W2029744004 @default.
- W4381322268 hasRelatedWork W2086120259 @default.
- W4381322268 hasRelatedWork W2137941439 @default.
- W4381322268 hasRelatedWork W2151614148 @default.
- W4381322268 hasRelatedWork W2245170124 @default.
- W4381322268 hasRelatedWork W2324615561 @default.
- W4381322268 hasRelatedWork W3186982001 @default.
- W4381322268 hasVolume "48" @default.
- W4381322268 isParatext "false" @default.
- W4381322268 isRetracted "false" @default.
- W4381322268 workType "article" @default.