Match!

Zircon U–Pb and Molybdenite Re–Os Ages of the Lakange Porphyry Cu–Mo Deposit, Gangdese Porphyry Copper Belt, Southern Tibet, China

Published on Apr 1, 2016in Resource Geology1.11
· DOI :10.1111/rge.12091
Qiufeng Leng2
Estimated H-index: 2
(CDUT: Chengdu University of Technology),
Juxing Tang2
Estimated H-index: 2
+ 4 AuthorsHai-Feng Li1
Estimated H-index: 1
(China University of Geosciences)
Cite
Abstract
The Lakange porphyry Cu–Mo deposit within the Gangdese metallogenic belt of Tibet is located in the southern–central part of the eastern Lhasa block, in the Tibetan Tethyan tectonic domain. This deposit is one of the largest identified by a joint Qinghai–Tibetan Plateau geological survey project undertaken in recent years. Here, we present the results of the systematic logging of drillholes and provide new petrological, zircon U–Pb age, and molybdenite Re–Os age data for the deposit. The ore-bearing porphyritic granodiorite contains elevated concentrations of silica and alkali elements but low concentrations of MgO and CaO. It is metaluminous to weakly peraluminous and has A/CNK values of 0.90–1.01. The samples contain low total REE concentrations and show light REE/heavy REE (LREE/HREE) ratios of 17.51–19.77 and (La/Yb)N values of 29.65–41.05. The intrusion is enriched in the large-ion lithophile elements (LILE) and depleted in the HREE and high field-strength elements (HFSE). The ore-bearing porphyritic granodiorite yielded a Miocene zircon U–Pb crystallization age of 13.58 ± 0.42 Ma, whereas the mineralization within the Lakange deposit yielded Miocene molybdenite Re–Os ages of 13.20 ± 0.20 and 13.64 ± 0.21, with a weighted mean of 13.38 ± 0.15 Ma and an isochron age of 13.12 ± 0.44 Ma. This indicates that the crystallization and mineralization of the Lakange porphyry were contemporaneous. The ore-bearing porphyritic granodiorite yielded zircon eHf(t) values between −3.99 and 4.49 (mean, −0.14) and two-stage model ages between 1349 and 808 Myr (mean, 1103 Myr). The molybdenite within the deposit contains 343.6–835.7 ppm Re (mean, 557.8 ppm). These data indicate that the mineralized porphyritic granodiorite within the Lakange deposit is adakitic and formed from parental magmas derived mainly from juvenile crustal material that partly mixed with older continental crust during the evolution of the magmas. The Lakange porphyry Cu–Mo deposit and numerous associated porphyry–skarn deposits in the eastern Gangdese porphyry copper belt (17–13 Ma) formed in an extensional tectonic setting during the India–Asia continental collision.
  • References (92)
  • Citations (3)
Cite
References92
Newest
Published on Jan 1, 2014in Journal of Asian Earth Sciences2.76
Youye Zheng3
Estimated H-index: 3
(China University of Geosciences),
Xiang Sun1
Estimated H-index: 1
(CAS: Chinese Academy of Sciences)
+ 5 AuthorsJiandong Li2
Estimated H-index: 2
(China University of Geosciences)
Abstract The Jiru porphyry copper deposit in the Gangdese Porphyry Copper Belt (GPCB) is hosted by monzogranite and monzogranite porphyry with SHRIMP U–Pb ages of 48.6 ± 0.8 Ma and 16.0 ± 0.4 Ma, respectively. Rhenium–Os ages of molybdenite from the monzogranite and monzogranite porphyry are 44.9 ± 2.6 Ma and 15.2 ± 0.4 Ma, slightly younger than ages of the host rocks, respectively. These geochronological data indicate that there are two mineralization events at the Jiru deposit, in contrast to ...
Published on Oct 1, 2012in Acta Geologica Sinica-english Edition
Wang Liqiang2
Estimated H-index: 2
,
CHENYuchuan7
Estimated H-index: 7
+ 5 AuthorsLeng Qiufeng2
Estimated H-index: 2
(CDUT: Chengdu University of Technology)
The multi-stage intrusions of intermediate-acid magma occur in the Bangpu mining district, the petrogenic ages of which have been identified. The times and sequences of their emplacement have been collated and stipulated in detail in this paper by using the laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) zircon U-Pb dating method. The ages of biotite monzogranite that were formed before mineralization in the southwest of this mining district are 70±1 Ma (mean square of we...
Published on Jan 1, 2012in Mineralium Deposita3.40
Zheng Yuan1
Estimated H-index: 1
The Nuri layered skarn Cu-W-Mo deposit is one of the most important deposits on the southern margin of the eastern Gangdese belt,Tibet.Molybdenite was separated from 9 samples collected from various types of ores.These molybdenite samples were dated by Re-Os isotopic analysis.Mode ages of the 9 samples vary from 23.46 Ma to 24.77 Ma.Meanwhile,these samples yielded an isochron age of(23.36±0.49) Ma(MSWD=0.60).The isochron age should represent the formation age of the Nuri Cu-W-Mo deposit.Therefor...
Published on Jan 1, 2012in Gondwana Research6.48
Zhiqin Xu38
Estimated H-index: 38
,
Shaocheng Ji36
Estimated H-index: 36
(École Polytechnique de Montréal)
+ 3 AuthorsHui Cao7
Estimated H-index: 7
Abstract Field observations, deformation and fabric analyses, and precise age data acquired by zircon SHRIMP, LA–ICP-MS U–Pb and 40 Ar– 39 Ar dating methods have yielded new constraints on the kinematics and dynamics of the Namche Barwa Syntaxis (NBS) which is the eastern corner of the Himalaya. A two-stage model has been established to explain the formation and evolution of the NBS. The northward indentation of the Indian plate beneath the Lhasa terrane began at 55–40 Ma, and crustal materials ...
Published on Jan 1, 2012in Mineralium Deposita3.40
Hou Zeng1
Estimated H-index: 1
Giant porphyry deposits are generally found in magmatic arcs and continent collisional belt.Metallogenic theory of the porphyry copper deposit under the magmatic arc condition has been well established,while that in the continental collision setting has not been formed.A large number of porphyry deposits were formed in Tibetan plateau as the result of collision between the India and the Lhasa plates.Three different porphyry deposit belts have been found in the Lhasa terrene.The Sharang-type porp...
Published on Jan 1, 2012in Resource Geology1.11
Guangming Li6
Estimated H-index: 6
,
Jinxiang Li5
Estimated H-index: 5
+ 4 AuthorsJunxing Zhao17
Estimated H-index: 17
The Duobuza gold-rich porphyry copper district is located in the Bangongco metallogenetic belt in the Bangongco-Nujiang suture zone south of the Qiangtang terrane. Two main gold-rich porphyry copper deposits (Duobuza and Bolong) and an occurrence (135 Line) were discovered in the district. The porphyry-type mineralization is associated with three Early Cretaceous ore-bearing granodiorite porphyries at Duobuza, 135 Line and Bolong, and is hosted by volcanic and sedimentary rocks of the Middle Jur...
Published on Feb 1, 2011in Science China-earth Sciences2.26
Taofa Zhou16
Estimated H-index: 16
(Hefei University of Technology),
Yu Fan12
Estimated H-index: 12
(Hefei University of Technology)
+ 5 AuthorsDavid R. Cooke30
Estimated H-index: 30
(UTAS: University of Tasmania)
The Ning-Wu (Nanjing-Wuhu) Basin is one of the most important volcanic basins in the Middle-Lower Yangtze River Valley, eastern China. It consists of four volcanic units, i.e., the Longwangshan, Dawangshan, Gushan, and Niangniangshan Formations. Their LA-ICP MS U-Pb zircon ages are 134.8±1.8, 132.2±1.6, 129.5±0.8, and 126.8±0.6 Ma, respectively. Results of this study indicate that all volcanic rocks in the Ning-Wu Basin were formed in the Early Cretaceous from 135 to 127 Ma, lasting 8–10 m.y. No...
Published on Jan 1, 2011in Mineralium Deposita3.40
Qin Zhi1
Estimated H-index: 1
This paper deals with the emplacement timing of the intermediate-acidic intrusive rocks in Jiama of Tibet and its metallogenic significance.Based on the measured geological data and LA-ICP-MS U-Pb zircon ages of the four intermediate-acidic intrusive rocks,the authors preliminarily regularized the timing sequence,which is from early to late in order of porphyry granite(15.31 Ma~16.27 Ma)-quartz diorite porphyrite-adamellite porphyry(14.81 Ma)-granodiorite-porphyry;Exemplified by molybdenum,the J...
Published on Jan 1, 2011in Earth and Planetary Science Letters4.64
ZHUDicheng31
Estimated H-index: 31
(China University of Geosciences),
Zhidan Zhao41
Estimated H-index: 41
(China University of Geosciences)
+ 5 AuthorsWUFuyuan87
Estimated H-index: 87
(CAS: Chinese Academy of Sciences)
article i nfo The Lhasa Terrane in southern Tibet has long been accepted as the last geological block accreted to Eurasia before its collision with the northward drifting Indian continent in the Cenozoic, but its lithospheric architecture, drift and growth histories and the nature of its northern suture with Eurasia via the Qiangtang Terrane remain enigmatic. Using zircon in situ U-Pb and Lu-Hf isotopic and bulk-rock geochemical data of Mesozoic-Early Tertiary magmatic rocks sampled along four n...
Published on Jan 1, 2011in Mineralium Deposita3.40
Wang Li1
Estimated H-index: 1
,
Mlr Key2
Estimated H-index: 2
(CDUT: Chengdu University of Technology)
The Bangpu porphyry Mo(Cu)deposit is located about 30 km northeast of the Jiama copper polymetallic deposit.The rocks related to molybdenum mineralization in this ore deposit are mainly monzogranite porphyry,with minor granodiorite porphyry and diorite(porphyrite).The age of the ore-forming rock was obtained through LA-ICP-MS precise determination of the zircon U-Pb age for the molybdenite-bearing monzogranite porphyry.26 zircons from the monzogranite porphyry yielded the weighted average 206Pb/...
Cited By3
Newest
Published on May 3, 2019in International Geology Review3.00
Yun-Hui Zhang5
Estimated H-index: 5
(CDUT: Chengdu University of Technology),
Huawen Cao9
Estimated H-index: 9
(CGS: China Geological Survey)
+ 5 AuthorsYang-shuang Wang1
Estimated H-index: 1
(CDUT: Chengdu University of Technology)
ABSTRACTThe Tibetan Plateau is a composite orogenic belt that has experienced prolonged subduction, obduction, and collisional processes, during the opening and closure of successive Tethyan oceans. We present new zircon U-Pb ages and Hf isotopes, and whole-rock geochemical and Sr-Nd-Pb isotopic data from the Early Paleogene Longge’er gabbro and Qingduxiang granite of Central Lhasa, southern Tibet. Together these allow us to refine existing models for widespread magmatic activity associated with...
Published on Jul 1, 2018in Resource Geology1.11
Guang Chun Fei1
Estimated H-index: 1
(CDUT: Chengdu University of Technology),
Yu Zhou1
Estimated H-index: 1
+ 6 AuthorsYan Huo1
Estimated H-index: 1
(CDUT: Chengdu University of Technology)
Published on May 1, 2018in Ore Geology Reviews3.39
Fuwei Xie4
Estimated H-index: 4
,
Juxing Tang4
Estimated H-index: 4
+ 1 AuthorsXinghai Lang4
Estimated H-index: 4
(CDUT: Chengdu University of Technology)
Abstract The Xiongcun district, a unique area where oxidized porphyry copper-gold deposits (OPCD) and reduced porphyry copper-gold deposits (RPCD) coexist, is located in the central part of the Gangdese porphyry copper belt (GPCB) in Tibet, China, and hosts the only known mineralization related to the Neo-Tethyan oceanic subduction. Apatite and zircon major and trace elements, in situ oxygen isotopes in zircon from fertile quartz diorite porphyry (QDP) of the No. I deposit, fertile hornblende qu...
View next paperGeochemistry and zircon U--Pb dating of the granodiorite porphyry in the Yanghuidongzi copper deposit,Heilongjiang Province, and its geological implications