欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
对侵位于河南省商城县白垩纪商城花岗岩体中的岩墙进行的锆石SHRIMPU．Pb法年代学研究表明，单颗粒锆石的年龄数据反映出中一新太古代（2843Ma）、中元古代（1886Ma、1829Ma）、新元古代（768．4～535．1Ma）、古生代（353．7Ma、262．2Ma）和中生代（234．2～117．8Ma）的年龄，与区域构造事件和地质演化历史有很好的对应性。结合前人对大别造山带各类岩石年代学研究的结果，笔者认为岩墙锆石测年给出的谐和年龄751．3土39．9Ma代表大别造山带中元古代晋宁期一期重要且强度很高的变质作用年代。根据前人对大别造山带大地构造演化历史的认识，结合本文岩墙年代学研究结果，笔者认为岩墙锆石测年结果可能印证了秦岭一大别造山带中生代以来的、以岩石圈基底拆沉作用为基本特征的强烈壳幔相互作用。
英文摘要：
The SHRIMP U-Pb age data of zircon in the intruding dyke in the Cretaceous granite rocks at Shangcheng, Henan showed that the ages of individual zircons reflected the ages of Mesoneoarchean （2843 Ma）, Meso-proterozoic （1886 Ma, 1829 Ma）, Neoproterozoic （768.4-535.1 Ma）, Paleozoic （353.7 Ma, 262.2 Ma） and Mesozoic （234.2-117.8 Ma）, and these zircon ages were well correlated with regional tectonic and geological evolution events. Compared with literature chronology results of various types of rocks in Dabie orogenic belts, the author proposed that the harmonic age of 751.3 Ma 土 39.9Ma represented an important and metamorphic process intensive period in Dabie orogenic area. Combined previous studies of tectonic evolution in Dabie orogenic area with the age data of zircon in the dyke of this study, the author believed that the age data obtained in this study could have confirmed that the interaction between crust and mantle in the Qinling and Dabie orogenic area since Mesozoic time can be essentially categorized as lithosphere basement delamination.
同期刊论文项目
同项目期刊论文
Discovery of Cu-Ni-Zn-Sn-Fe intermetallic compounds and S-bearing alloys in the Zhaishang gold depos
Constraints on the depth, geometry and kinematics of blind detachment faults provided by fault propa
Types, Characteristics, and Geodynamic Settings of Mesozoic Epithermal Gold Deposits in Eastern Chin
Tectonic significance of Late Triassic post-collisional lamprophyre dykes from the Qinling Mountains
Geochemistry and Nd-Sr isotopic studies of Late Mesozoic granitoids in the southeastern Hubei Provin
Re-Os molybdenite and 40Ar-39Ar phlogopite dating of Cu-Fe-Au-Mo (W) ore deposits in southeastern Hu
SHRIMP zircon U-Pb dating of the intrusives in the Tongling metallogenic cluster and its dynamic set
Molybdenite Re-Os and albite 40Ar/39Ar dating of Cu-Au-Mo and magnetite porphyry systems in the Yang
Tectonic implications from Re Os dating of Mesozoic molybdenum deposits in the East Qinling Dabie or
Precise Re-Os dating of molybdenite from the east Qinling molybdenum belt in central China and its g
SHRIMP Zircon U-Pb and Molybdenite Re-Os Datings of the Superlarge Donggou Porphyry Molybdenum Depos
SHRIMP zircon U-Pb dating for volcanic rocks of the Dasi Formation in southeast Hubei Province, midd
Geology and geochemistry of telluride bearing Au deposits in the Pingyi area, Western Shandong, Chin
The relationship of mantle-derived fluids to gold metallogenesis in the Jiaodong Peninsula: Evidence
P-T conditions of the crystallization and origin of plagioclase-mantled alkli feldspar megacrysts in
Kübler index and K-Ar ages of illite in Yinshan polymetallic deposit, Dexing, Jiangxi Province, Sout
期刊信息
位置：