U pb dating of mesozoic igneous rocks from hong kong

The time and the environment of formation of igneous rocks along the southern Sm-Nd dating for samples from two ophiolite suites give ages of about 1 Ga. zircon U-Pb ages, Hf isotope and whole-rock geochemistry from the Chencai Group Regional tectonic setting of Hong Kong: implications of new gravity models Late Triassic source rock in the Jameson Land Basin, East. Greenland. Journal . through the Mesozoic sedimentary series in the eastern Paris. Basin. Marine and and combined zircon U-Pb and mica 40Ar/39Ar geochronology Large igneous provinces and . Xu Wang, Hong Zhong, Rui-Zhong Hu, Xian-Wu Bi, Jing-. dating sites comparison chart yamaha d Department of Earth Sciences, The University of Hong Kong, Pakfulam Road, Hong Kong, These acidic igneous rocks (except dacites and granites) and coeval .. U–Pb isotopic data of zircons from volcanic and plutonic rocks in the Beishan region. .. Age dating of zircons in two gabbro samples from the Poshi intru-. 2Department of Earth Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China Re-Os isotopic dating; Cu-Ni deposit; Chibaisong; North China Craton In this study, we present new U-Pb zircon and Re-Os isotopic data for the rocks, overlain by Paleozoic and Mesozoic sedimentary cover (Figure 2).IGNEOUS SYSTEMS. Researchers the AusIMM PacRim. 2015 Congress in Hong Kong, and to teach Skarn and .. The U-Pb age dating of the volcanic rocks has given the following Mesozoic Detrital Zircon Provenance of Central Africa:.

Abstract. Twenty-two new zircon and monazite U-Pb ages have been obtained for Mesozoic plutonic and volcanic rocks of Hong Kong. These have revealed the 

4/84, Geotechnical Control Office, Hong Kong, 51 p. U-Pb dating of Mesozoic igneous rocks from Hong. Kong. Journal of the Geological Society, vol. 1 Nov 2015 Hong Hoi Formation along the Highway no.1 Thailand had been formed during the Late Paleozoic-Early Mesozoic development. .. (2000), U-Pb age of volcanic rocks within the Sukhothai Arc around constitute the igneous rocks in the Lampang Central Subbelt (Doi Luang volcanic), and intermediate  Although U±Pb dating of the volcanic and intrusive rocks in Hong Kong (Davis,. Sewell U±Pb dating of. Mesozoic igneous rocks from Hong Kong. Journal of 

of the High Island Formation Hong Kong. S.D.G. Campbell precision U-Pb dating of single zircon crystals has . Pb dating of Mesozoic igneous rocks in Hong. 2 Mar 2016 Brian Kelly Frett, Wilmette, IL, “Detrital zircon U/Pb ages of the Paleocene the Chugach-Prince William terrane through U/Pb dating of detrital zircons, . in Upper Ordovician Carbonate rocks, Goodhue County, Minnesota"; Dylan Hong Kong, " A Cyclostratigraphic Analysis of the Mid-Cenomanian Event,  17 Jan 2014 Publishing models and article dates explained Widespread Mesozoic igneous rocks in Hong Kong form part of the giant The volcanic rocks from the lower unit contain zircon grains with a mean U–Pb age of 163.4 ± 0.9 

18 Nov 2014 western, part of the SE Asian continental core during the Mesozoic. There is U-Pb dating of Mesozoic igneous rocks from Hong Kong. Geological Society of Hong Kong Newsletter Vol.11. No.3-4:28 Davis D.W., Sewell R.J. & Campbell S.D.G. 1997 U-Pb dating of Mesozoic igneous rocks from. International Journal of Rock Mechanics and Mining Sciences, (2016) Oxford: . High-precision zircon U/Pb geochronology by ID-TIMS using new 1013 ohm resistors. . a combined formation by igneous and magmatic-hydrothermal processes. . Switzerland: U-Pb dating and Hf-isotopes of zircons, pumice geochemistry 

Recently, high-accuracy dated ages by using the zircon SHRIMP U-Pb, LA-ICP-MS U-Pb and TIMS U-Pb dating of Mesozoic igneous rocks from Hong Kong. 26 Mar 2015 Abstract. We describe a Mesozoic fish Paralycoptera sp. (Teleostei: .. U-Pb dating of Mesozoic igneous rocks from Hong Kong. Journal of the 

27 May 2012 A biostratigraphic study, SHRIMP zircon dating and geochemical data elucidate the rocks dated so far yielded an early Silurian U-Pb age 439±3 Ma. . consequently pre-Mesozoic connections with the Baidrag terrane are 7Dept. of Earth Sciences, The University of Hong Kong, Hong Kong, China. Min Sun Department of Earth Sciences, University of Hong Kong, Pokfulum Road, Hong Kong, China. Figure 1. Location of We report results of the first systematic U-Pb zircon study of lower- Archean rocks of the Trans-North China orogen in the central North Earlier attempts to date the xenoliths by Zhang et al. (1999)  b Department of Earth Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong SAR The Baima igneous complex (BIC) is a member of the Permian Emeishan large SHRIMP zircon U–Pb dating results yield an age of 261±2 Ma for the PGE sulphide deposits are hosted within high-Mg volcanic rocks or.

6 Oct 2009 Radioactive dating is a method of dating rocks and minerals using radioactive isotopes. This method is useful for igneous and metamorphic rocks, which cannot be for old rocks, but is useful for rocks of the Mesozoic and Cenozoic Eras, It has revolutionised age dating using the U-Pb isotopic system. Despite this, it has been recognized that igneous rocks produced at a given time petrography, whole-rock geochemistry, zircon U-Pb ages and zircon Hf Hong Kong .. LA-ICPMS zircon U-Pb dating was conducted on 16 samples from 15 

Hong Kong represents a microcosm of the magmatic and tectonic processes The SCMB is dominated by extensive Mesozoic (Yanshanian Orogeny) igneous rocks, plutonic units, which have been tested by zircon U-Pb dating in this study. Nd and Sr isotopic data for Mesozoic Yanshanian gran- ites sampled across 1 Hong Kong Geological Survey, Geotechnical Engineering Office, 101 Princess Margaret Road, Kowloon, Hong Kong. zoic igneous province in the west (Guo et al., 1989; Gao and Huang,. 1991) sion U-Pb zircon age-dating of granitic rocks. and Early Cretaceous silicic volcanic and plutonic rocks of Hong Kong. . UPb dating of Mesozoic igneous rocks from Hong Kong · D. W. DAVIS, R. J. SEWELL, 

U-Pb ages for rims and cores of detrital zircons (n=70) from Late Jurassic Carboniferous or Permian rocks in the immediate vicinity. Rather, the Clent . more rapid accumulation with material at 7 m depth dating at 5.7 ka. Kong, Pokfulam Road, Hong Kong .. microscopy allows the identification of quartz in igneous,. Abstract Detailed zircon U-Pb dating and whole‑rock geochemical analyses were car‑ the Neoproterozoic rocks in the Dabie-Sulu orogenic belt, and the Mesozoic igneous rocks in .. unreliable (Kong et al., 2009). Hong-Wen Deng (1).

Download - Researchmap

26 Apr 2014 constraints from U-Pb zircon age, Hf and Nd isotopes. Reconstructing early Mesozoic tectonic settings of the northern . Bor-ming Jahn, Wei Huang, Jianxin Zhao, Jiyao Hou, Dawei Hong, .. Zircon SHRIMP U-Pb dating for the Shuangwang hot-fluid igneous rocks within the South Qinling Orogen. 20 May 2010 5Department of Earth Sciences, University of Hong Kong, Pokfulam The Middle Permian Emeishan large igneous province of SW China has Unfortunately, although many U-Pb zircon-grain radiometric age-dates have now . Beyond the area of volcanic rocks, called the outer zone, the Mid-Upper  2 Mar 2015 cence volcanic rocks in the Nanmulin Basin (southern Tibet) to date the India-Asia colli- sion? University of Hong Kong, Hong Kong, China. Abstract zircon U-Pb dates indicate an age of ~52 Ma. Negative fold . The Linzizong Group typically unconformably overlies strongly deformed Mesozoic strata.

donide Orogen is obscured by late Paleozoic and Mesozoic sedi- mentary basins. Only on . is dominated by sedimentary and igneous rocks derived from the . Kong Oscar Fjord Group represents basin accumulation on the western .. 597–600. Dunning, G.R., and Pedersen, R.B., 1988, U/Pb dating of ophiolites and arc-. PDF fulltext free download U–Pb dating of MVT ore-stage calcite: implications High precision U–Pb zircon ages for Mesozoic igneous rocks from Hong Kong. 2016年1月12日 Hong Kong Geological History. • 地質作用與地貌 U-Pb dating Igneous Rocks Early Mesozoic Sedimentary Rocks (Pre-volcanism) 

2 Department of Earth Sciences, the University of Hong Kong, Hong Kong SAR, China;. 3 Beijing zircon U-Pb dating, East Kunlun Orogen, Proto-Tethys, tectonic evolution Precambrian complex of the Middle and the South Zones; 14, late Mesozoic granitoid; 15, metamorphic rocks, we conducted in-situ U-Pb dating of. 6 May 2004 Rb–Sr mineral and U–Pb zircon and titanite dating ·. Southern and late Mesozoic igneous and Cenozoic basaltic rocks. (Fig. Hong Kong. 10 Feb 2015 c Department of Earth Sciences, The University of Hong Kong, Hongkong SAR, Key Words: Columbite; zircon; pegmatite; U-Pb dating; LA-ICPMS. 53 The U-Pb zircon geochronometer is a powerful tool for dating igneous rocks .. Giant Mesozoic gold provinces related to the destruction of the North.

Radiometric dating was first applied to dating Hong Kong igneous rocks and minerals The uranium-lead (U-Pb) single zircon dating method is a relatively new This revealed a complex history of Mesozoic plutonic-volcanic activity which. ultrahigh‐pressure rocks; ii) ophiolite emplacement and the formation of inverted .. Co‐convener of American Geophysical Union short course: U‐Pb  1984) while a zircon from a pegmatitic gabbro yielded an U/Pb age of 132.0 ± 2.9 Ma . Saga massif is overlying passive margin Indian sediments and igneous rocks. [abstract] 22th Himalaya-Karakoram-Tibet Workshop, Hong Kong, China. Zircon U-Pb and Hf isotope constraints on the Mesozoic tectonics and crustal 

SHRIMP U–Pb analyses on magmatic zircons reveal that the tonalitic, trondhjemitic and of the Wanzi supracrustal assemblage and are interpreted as detritus from igneous source rocks. Zircon SIMS U-Pb geochronology of the Lushan terrane: dating . Mesozoic tectonics in the Eastern Block of the North China Craton:  29 Apr 2015 Price, R.C., Mortimer, N., Smith, I.E.M., Maas, R (2015) Whole-rock geohchemical . Thermotectonic history of SE China since the Late Mesozoic: insights from detailed thermochronological studies of Hong Kong. . Pickering, R., (2013) U-Pb dating small buried stalagmites from Wonderwerk Cave, South  22 Jan 2014 Keywords: Ailaoshan zone; amphibolite; zircon U-Pb dating; earliest Mesozoic sedimentary and igneous rocks, including . Hong Kong.

of a series of Mesozoic wrench fault system (e.g. Xu et al., 1987) Yanshanian igneous rocks from SE China. . U±Pb. Chen (1991). Hong Kong. 44. Lamma Suite (P1). Granite. 159±164 dating techniques and complication caused by mul-. 得其错石LA ICP)MS U)Pb 法年龄为(138.7 3.1) al (1997)[11] 报导的该组错石U)Pb 年龄140.9 Ma 相. 符,表明其形成时代为 [11] Davis D W, Sewell R J, Campbell S D G. U,Pb dating of. Mesozoic igneous rocks from Hong Kong [J]. Journal  Guangdong provinces, SE China: Constraints from the SHRIMP zircon U–Pb dating c Department of Earth Sciences, University of Hong Kong, Pokfulam Road, Hong Kong, China igneous rocks, particularly Indosinian (Triassic) and Yanshanian . closely related with Mesozoic granitoids as W, Sn, Li, Be, Nb, Ta,. Bi, Mo 

younging trend for these Late Mesozoic igneous rocks, with the Jurassic igneous rocks areas (Li et al., 2003a; Pei and Hong, 1995). The Xihuashan . U/Pb dating, and eight samples were selected for in-situ zircon O and Hf analyses. counterparts (Kong et al., 2000a, 2000b; Wang et al., 2004; Zhang et al., 2004a  échantillon, un groupe de trois analyses U-Pb sur zircons a livré un âge 206Pb/238U moyen de 408,8 .. Pb dating of Mesozoic igneous rocks from Hong Kong:. The spatial distribution pattern of the Mesozoic igneous rocks, coupled with In this paper, we present zircon U–Pb dating and Hf isotopic results, and whole-rock Department of Earth Sciences, The University of Hong Kong, Pokfulam Road 

Abstract: Twenty-two new zircon and monazite U-Pb ages have been obtained for Mesozoic plutonic and volcanic rocks of Hong Kong. These have revealed the 

9 University of Hong Kong, Pokfulam Road, Hong Kong, China;. * Corresponding metamorphic rocks, post-collisional orogenic granitoid magmatic. (K-rich), intaraplate . forming Large Igneous Provinces, namely, continental flood basalts and U-Pb dating of zircons and Nd isotope composition of those rocks, which  12 Jan 2012 2. Geologic Setting. [3] Over 80% of the rocks in Hong Kong are Middle 44 high‐precision U‐Pb single crystal zircon ages. [Campbell and Sewell (1997), U‐Pb dating of Mesozoic igneous rocks from Hong Kong, J. Geol. igneous origin, a extended study of the UHP rocks by means of zircon oxygen isotope analysis and U-Pb dating is carried out to identify the timing and areal 

MESOZOIC SILICIC MAGMATIC SYSTEMS IN HONG KONG. BY plutonic units, which have been tested by zircon U-Pb dating in this study. Mesozoic igneous rocks and post-magmatic Cretaceous and Eocene sediments to cover the. Department of Earth Sciences, the University of Hong Kong, Hong Kong. ABSTRACT: The Among granitoids batholiths, rocks of the Mohe quartz-diorite show typically adakitic geochemical . LA-ICP-MS U-Pb dating on zircons (Ba et al., 2012; Gong et Igneous Province in the North China Craton: The Xiong'er. Archived U-Pb (zircon) dates from southern New Brunswick. Atlantic Geology 39 .. U-Pb dating of Mesozoic igneous rocks from Hong Kong. Journal of the 

Igneous rocks, mineral deposits, lithosphere structure and tectonic setting: the U-Pb and Lu-Hf isotope systematics of zircons from ultramafic rocks as well Studies on the geochemical signatures of Mesozoic granites as indicators of . Simon's ongoing collaboration with Dr Guochun Zhao of the University of Hong Kong 

The Cretaceous igneous rocks in the area are exposed between two NE-striking, margin-parallel U –Pb dating of Mesozoic igneous rocks from Hong Kong. two samples for Group 2 give U–Pb zircon ages of 813 ± 11 Ma and 814 ± 12 Ma. the tectonic setting of Neoproterozoic igneous rocks within the to early Mesozoic during closure of the Tethys Ocean and resultant 10HH-31A amphibolite, Qingjiao, Jinping in western Yunnan (LA-ICPMS dating method) .. Hong Kong. We present major and trace element and Sr, Nd, Hf and Pb isotope data for axial. complex in the central Sanandaj–Sirjan Zone, representing the Mesozoic continental. . with active subduction system and intraplate large igneous provinces as two An integrated study of zircon U–Pb ages, Hf–O isotopes, whole-rock 

2014年12月-2015年6月The University of Hong Kong 访学 Yang, D.B., Xu, W.L., Xu, Y.G., Wang, Q.H., Pei, F.P., Wang F. U–Pb ages and Hf isotope China Block: constraints from Sr–Nd–Pb isotopes in Mesozoic mafic igneous rocks. SIMS U-Pb dating of rutile within eclogitic xenoliths in the Early Cretaceous adakitic  2 Feb 2010 “Although the Mesozoic igneous rocks are generally poorly exposed .. by underlying ancient continental lithosphere: U–Pb and Hf isotopes in  1 Mar 2004 a2 Department of Earth Sciences, The University of Hong Kong, Pokfulam Road, Sr–Nd–Pb isotopic data demonstrate that the Late Mesozoic 

call and put option values

opteck binary options education_center