全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
地质通报  2008 

辽宁鞍山地区东山杂岩带3.3~3.1Ga期间的岩浆作用――锆石SHRIMPU-Pb定年

Keywords: 太古宙,辽宁鞍山,锆石SHRIMPU-Pb定年,花岗岩

Full-Text   Cite this paper   Add to My Lib

Abstract:

报道了鞍山地区东山杂岩带奥长花岗岩和二长花岗岩的锆石SHRIMPU-Pb年龄。中粗粒奥长花岗岩中岩浆锆石的年龄为3329Ma±22Ma(MSWD=9.6),存在年龄为3687~3784Ma的残余锆石。细粒奥长花岗岩和二长花岗岩中岩浆锆石的年龄分别为3141Ma±8Ma(MSWD=1.5)和3142Ma±5Ma(MSWD=0.35)。研究表明,约~3.3Ga和3.1Ga是鞍山地区2个重要的地壳演化阶段。

References

[1]  万渝生 伍家善 刘敦一 等.鞍山3.3Ga陈台沟花岗岩地球化学和Nd、Pb同位素特征[J].地球学报,1997,18(4):382-388.
[2]  万渝生 宋彪.鞍山3.8Ga奥长花岗质岩石的地球化学和Nd,Sr同位素组成及其意义[J].地质学报,:.
[3]  万渝生 李惠民 等.鞍山东山风景区3.8―2.5Ga古老岩带的同位素地质年代学和地球化学[J].地质学报,:.
[4]  周红英 刘敦-万渝生 等.鞍山地区3.3 Ga岩浆事件--SHRIMP年代学和地球化学新证据[J].岩石矿物学杂志,2007,26(2):123-129.
[5]  刘敦一 万渝生 伍家善 等.华北克拉通太古宙地壳演化和最古老的岩石[J].地质通报,2007,26(9):1131-1138.
[6]  Song B, Nutman A P, Liu D Y, et al. 3800 to 2500 Ma crust in the Anshan area of Liaoning Province, northeastern China[J]. Precambrian Research, 1996, 78: 79-94.
[7]  Compston W, Kinny P D, williams I S, et al. The age and lead loss behaviour of zircons from the Isua supracrustal belt as determined by ion microprobe[J]. Earth and Planetary Science letters, 1986, 80: 71-81.
[8]  Williams I S. U-Th-Pb geochronology by ion microprobe[J]. Reviews in Economic Geology, 1998, 7: 1-35.
[9]  Black L P, Kamo S L, Allen C M, et al. TEMORA 1: a new zircon standard for Phanerozoic U-Pb geochronology[J]. Chemical Geology, 2003, 200: 155-170.
[10]  Steiger R H, Jaeger E. Subcommssion on geochronology: convention on the use of decay constants in geo- and cosmochronology[J]. Earth and Planetary Science Letters, 1977, 36: 359-362.
[11]  Ludwig K R. Squid 1.02: A User\\'s Manual[M]. Berkeley Geochronology Centre: Special Publish, 2001:19.
[12]  Wan Y S, Zhang Z Q, Wu J S, et al. Geochemical and Nd isotopic characteristics of some rocks from the Paleoarchaean Chentaigou supracrustal, Anshan area, NE China[J]. Continental Dynamics, 1997, 2(1): 39-46.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133