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  • (PDF) Geochronology of early Mesozoic diabase units in

    fold-and-thrust belt in the SW South China Block China. Zircons from these diabase units yield weighted mean U–Pb ages of 249.2 ± 2.0 Ma and 187.1 ± 3.3 Ma and magmatic oxygen fugacity

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  • Baotite Ba4(Ti Nb)8Si4O28ClHandbook of Mineralogy

     · mine China) in a carbonate vein cutting hornblende" gneiss intruded by diabase sills and small Distribution In China from the Baiyun-Obo mine near Pao-t ou Inner Mongolia. In the USA on Sheep Creek Ravalli Co. Montana and at the Gem mine San Benito Co. California.

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  • Diabase Sills in the Outer Zone of the Emeishan Large

     · Compositionally and texturally zoned diabase dykes and sills occur in the outer zone of the Emeishan large igneous province (ELIP) in the southern Guizhou Province Southwest China. Based on the detailed petrology whole rock geochemistry zircon U-Pb geochronology and Hf isotopes and clinopyroxene mineral compositions studies we investigate a representative diabase sill in the

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  • Diabase Engineering See Full Importer History

    US Customs Records Notifications available for Diabase Engineering. See their past imports from Abba Linear Tech Co. Ltd. a supplier based in China Taiwan. Follow future shipping activity from Diabase Engineering.

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  • Geochemistry and zircon ages of the Yushigou diabase in

    The North Qilian orogenic belt in North China has been defined as a subduction–collision zone between the Alxa Block and the Qilian Block. We present petrography zircon U–Pb geochronology major- and trace-element geochemistry and Sr–Nd–Pb–Hf isotope analysis for the Yushigou diabase from the Longshoushan area which is located SW of the Alxa Block aiming to understand its

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  • The 1.35Ga diabase sills from the northern North China

    The 1.35Ga diabase sills from the northern North China Craton Implications for breakup of the Columbia (Nuna) supercontinent. Earth and Planetary Science Letters 2009. Shuan-Hong Zhang. Download PDF. Download Full PDF Package. This paper. A short summary of this paper.

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  • Heat‐model analysis of wall rocks below a diabase sill in

     · The crude oil recovered from the diabase sill in the well X38 was generated from its underlying mudstone which is validated by the detailed geochemical correlation between oil and the source rocks Li 1994 1997 . In addition the sill is about 5 km long and 3 km wide and the thickness ranges from 40 m to 70 m Li 1994 1997 .

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  • The Cihai diabase in the Beishan region NW China Isotope

     · Diabase dykes in Cihai Beishan region NW China are spatially and temporally associated with Cornwall-type iron deposits. U–Pb dating of zircons from a diabase dyke using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) yields an age of 128.5 ± 0.3 Ma indicating an Early Cretaceous crystallization age.Most of the diabases show low Mg-numbers suggesting

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  • (PDF) Age and composition of Neoproterozoic diabase

     · composition of Neoproterozoic diabase dykes in North Altyn Tagh northwest China implications for Rodinia break-up International Geology Review DOI 10.1080/.2020.

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  • The Cihai diabase in the Beishan region NW China Isotope

    SIMS Zircon U-Pb dating for diabase gabbro-diabase in Cihai gabbro in Cinan and amphibole-quartz-syenite in Cibei yields results of 275.1 ± 2.2Ma 281.9 ± 3.2Ma 273.0 ± 1.9Ma and 273.0 ± 1

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  • Diagenetic and metamorphic characteristics and

     · Magmatism is encountered widely in hydrocarbon-bearing basins worldwide. However its influences on country rocks as hydrocarbon reservoirs have been controversial. The current study takes an outcrop of diabase intrusion in the Tuanshanzi area southern Songliao Basin as a case study aiming to investigate diagenetic and metamorphic characteristics of country rocks on the basis of continuous

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  • Decimetre-scale multicellular eukaryotes from the 1.56

     · old Gaoyuzhuang Formation in North China The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters Citation Zhu Shixing Maoyan Zhu Andrew H. Knoll Zongjun Yin Fangchen Zhao Shufen Sun Yuangao Qu Min Shi and Huan Liu. 2016. "Decimetre-scale multicellular eukaryotes from

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  • The 1.35 Ga diabase sills from the northern North China

     · The North China Craton (NCC) is regarded as a Precambrian craton that finally stabilized during the Paleoproterozoic around 1.85 Ga (e.g. Zhao et al. 2000 Zhao et al. 2001 Wilde et al. 2002 Zhao et al. 2005).The basement of the NCC is composed of highly metamorphosed Archean and Paleoproterozoic rocks which are covered by a thick sequence of unmetamorphosed Meso

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  • Journal of Asian Earth Sciencescugb.edu.cn

     · The Cihai diabase in the Beishan region NW China Isotope geochronology geochemistry and implications for Cornwall-style iron mineralization Tong Houa Zhaochong Zhanga ⇑ M. Santosha b John Encarnacionc Meng Wanga a State Key Laboratory of Geological Process and Mineral Resources China University of Geosciences Beijing 100083 China bDivision of Interdisciplinary Science Kochi

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  • Distribution and gas-bearing properties of Permian igneous

     · Distribution of the igneous rock Based on analysis of drilling seismic and outcrop data Upper Permian igneous rocks in Sichuan Basin are mainly distributed in three regions large-scale overflow facies basalts in the southwestern part of the basin from a deep fault zone in Kangdian area 9 intrusive rock (diabase) extrusive volcanic lava

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  • 3D Mineral Prospectivity Mapping Based on Deep

     · In the diabase buffer zone the optimal diabase buffer distance is determined based on an ore-bearing analysis to characterize the interface between the basic rock and the sedimentary rock. On the other hand the ore-conducting structure is an important migration channel and it is mainly characterized by fractures and its optimal fracture buffer.

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  • Banqi (Sed-Au #1) deposit in Guizhou China

    diabase granite quartz porphyry Intrusive rock age Mesozoic Ma Ore bearing unit Lower Triassic Ziyun Group Ore bearing unit thickness 30 m Tectonic setting South China craton platform at

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  • U–Pb baddeleyite ages distribution and geochemistry of

     · Fig. 1. Distribution of Precambrian dykes sills and volcanics in the North China craton (1800–542 Ma). Lettres a–h locate the maps of Fig. 2. See text for data sources. P. Peng et al. / Lithos 127 (2011) 210–221 211

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  • Seismic Constraint From Vp/Vs Ratios on the Structure and

     · In this study we choose the South China Sea as a case study area using an effective method to image the V p /V s ratio unraveling the rock type distribution of basalt gabbro/diabase serpentinized peridotite in our model from top to bottom. We analyzed the variation of the crustal nature and composition from the continent-ocean transition

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  • Geological Online Map of Guizhou Province China Online

     · Luxuriant Western Epoch-Diabase. Caledonian-olivine pyroxenite mica peridotite and KIMBERLITE. Late Proterozoic-diabase and gneissic granite. Mesoproterozoic-granite mafic-ultramafic rocks. Comment list ( 0 ) Label China Map Geology. Map link Geological Online Map of Guizhou Province China.

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  • Geochronology of early Mesozoic diabase units in

     · Two phases of diabase-sill-forming magmatism are recorded within the Badu anticline where magmas were emplaced into upper Palaeozoic carbonates and clastic rocks of the Youjiang fold-and-thrust belt in the SW South China Block China. Zircons from these diabase units yield weighted mean U–Pb ages of 249.2±2.0 Ma and 187.1±3.3 Ma and

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  • Early Neoproterozoic emplacement of the diabase sill

     · 204 S.-H. Zhang et al. / Precambrian Research 272 (2016) 203–225 Fig. 1. Geological sketch map showing distribution of the diabase sills within the Neoproterozoic sedimentary rocks in the Liaodong Peninsula (modified after GSILP 2001).

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  •  · Gold distribution and source of the J4 gold-bearing breccia pipe in the Qiyugou district North China Craton Constraints from ore mineralogy and in situ analysis of trace elements and S-Pb isotopes. Ore Geology Reviews 105 .

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  • Tectonic Setting of the Cu-Ni Sulfide-Bearing Mafic

     · the North China Plate and Siberia Plate 13 and re- Distribution of mafic-ultramafic complexes in North Jilin Province NE China. bro-diabase-diorite assemblages and cumulus crystal structure so the rock should not belong to Yidun-types and Alaska-type intrusion in active orogenic belt. This suggests that the rock assemblage may be

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  • Geochemical patterns and metallogenic material source

     · Naoyangping-Damogou zinc-fluorite deposits in Pingli County China titanomagnetite deposits in diabase dikes (Li 2012 L. Liu et al. 2012) and witherite and barite deposits distribution and reproduction in any medium provided the original work is properly cited.

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  • Heat‐model analysis of wall rocks below a diabase sill in

     · The crude oil recovered from the diabase sill in the well X38 was generated from its underlying mudstone which is validated by the detailed geochemical correlation between oil and the source rocks Li 1994 1997 . In addition the sill is about 5 km long and 3 km wide and the thickness ranges from 40 m to 70 m Li 1994 1997 .

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  • Effective Evaluation and Development of Diabase

     · SPE Asia Pacific Oil and Gas Conference and Exhibition October 16–18 2000 Brisbane Australia

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  • Petrogenesis of the Bashisuogong bimodal igneous

     · units gabbro–diabase unit and felsic unit. The gabbro–diabase unit is composed of two 1–2km2 gabbroic in-trusions represented by BM-1 and BM-2 (Fig. 2) both of which are cut by several diabase dykes with roughly E–W orientation and 0.3 –2.5 m width (Fig. 3a). These gabbroic intrusions show massive structure

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  • (PDF) Geochronology of early Mesozoic diabase units in

    fold-and-thrust belt in the SW South China Block China. Zircons from these diabase units yield weighted mean U–Pb ages of 249.2 ± 2.0 Ma and 187.1 ± 3.3 Ma and magmatic oxygen fugacity

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  • Ore prospecting model and targets for the Dashuigou

     · deposit Sichuan Province China studies of the distribution and chemical species of Te in contaminated soil are of geochemical and environmental Diabase is widely dis-tributed in the eastern region. Due to the influence of the Indochina–Yanshan movement NNE- NS- and NNW-

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  •  · Gold distribution and source of the J4 gold-bearing breccia pipe in the Qiyugou district North China Craton Constraints from ore mineralogy and in situ analysis of trace elements and S-Pb isotopes. Ore Geology Reviews 105 .

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  • Deformation Process and Mechanism Analyses of a Rock

     · Station China Xuefeng Mei 1 Nengfeng Wang 2 Guotao Ma 3 Jie Wang 4 Yan Wang 3 Jianli Wu 3 which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 45.9 50.12 Intact diabase

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  • Geochronology of Two Mafic Intrusions in Funing

     · distribution of economic minerals in this area (Figure 1). The regional economic minerals are mainly gold minerals with more than 10 gold mineral-producing areas mostly distributed in the exposed parts of the gabbro and diabase. The distribution of gold deposits and ore outcrops in the area is

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  • (PDF) Mid-Neoproterozoic diabase dykes from Xide in the

    Mid-Neoproterozoic diabase dykes from Xide in the western Yangtze Block South China New evidence for continental rifting related to the breakup of Rodinia supercontinent

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  • Diabase Sills in the Outer Zone of the Emeishan Large

     · Compositionally and texturally zoned diabase dykes and sills occur in the outer zone of the Emeishan large igneous province (ELIP) in the southern Guizhou Province Southwest China. Based on the detailed petrology whole rock geochemistry zircon U-Pb geochronology and Hf isotopes and clinopyroxene mineral compositions studies we investigate a representative diabase sill in the

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  • Geochronology of early Mesozoic diabase units in

     · Two phases of diabase-sill-forming magmatism are recorded within the Badu anticline where magmas were emplaced into upper Palaeozoic carbonates and clastic rocks of the Youjiang fold-and-thrust belt in the SW South China Block China. Zircons from these diabase units yield weighted mean U–Pb ages of 249.2±2.0 Ma and 187.1±3.3 Ma and

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  • U–Pb baddeleyite ages distribution and geochemistry of

     · Fig. 1. Distribution of Precambrian dykes sills and volcanics in the North China craton (1800–542 Ma). Lettres a–h locate the maps of Fig. 2. See text for data sources. P. Peng et al. / Lithos 127 (2011) 210–221 211

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  • A systematic engineering geological evaluation of diabase

     · Dagangshan hydropower station is located in the middle of Dadu River Southwest China. Many diabase dikes were exposed in the adamellite granite body during excavation of the underground caverns. The dikes are highly directional have crushed interiors exhibit strong alteration and have poor contact relationships with surrounding rocks all of which is inconsistent with the characteristics

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  • (PDF) Age and composition of Neoproterozoic diabase dykes

     · composition of Neoproterozoic diabase dykes in North Altyn Tagh northwest China implications for Rodinia break-up International Geology Review DOI 10.1080/.2020.

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  • Granite-related Hypothermal Uranium Mineralization in

     · distribution of different type uranium deposits The metallogenic region subdivisions mineralization in China share the same characteristics in space in time. diabase 5 altered fissuration zone 6 silicification zone 7 ore body

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  • The Cihai diabase in the Beishan region NW China

    SIMS Zircon U-Pb dating for diabase gabbro-diabase in Cihai gabbro in Cinan and amphibole-quartz-syenite in Cibei yields results of 275.1 ± 2.2Ma 281.9 ± 3.2Ma 273.0 ± 1.9Ma and 273.0 ± 1

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