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Search Results: 1 - 10 of 18527 matches for " HAN BaoFu "
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Study on Soil Remediation Technology of Cadmium Contaminated Site  [PDF]
Baofu Han
Open Journal of Applied Sciences (OJAppS) , 2019, DOI: 10.4236/ojapps.2019.93010
Abstract: This paper focuses on the status quo of heavy metal cadmium pollution sites, analyzes and summarizes the physical, chemical and bioremediation technologies of cadmium contaminated soil, and carefully analyzes the advantages and disadvantages of each repair technology. It pointed out the need to develop scientific, efficient and comprehensive restoration management techniques.
A rare zigzag mud crack
Tairan Wu,Guoqi He,Baofu Han
Chinese Science Bulletin , 1999, DOI: 10.1007/BF02885498
Abstract:
SHRIMP zircon U-Pb ages of Kalatongke No. 1 and Huangshandong Cu-Ni-bearing mafic-ultramafic complexes, North Xinjiang, and geological implications
Baofu Han,Jianqing Ji,Biao Song,Lihui Chen,Zonghuai Li
Chinese Science Bulletin , 2004, DOI: 10.1007/BF03183432
Abstract: The SHRIMP zircon U-Pb dating was carried out and yielded 287±5 Ma (MSWD = 0.34) and 274±3 Ma (MSWD = 1.35) for the Kalatongke No. 1 and Huangshandong Cu-Ni-bearing mafic-ultramafic complexes. These ages are much more precise than pre-existing rock-mineral Rb-Sr, Sm-Nd and Re-Os isochron ages for the two complexes and constrain the timing of not only the complexes but also the magmatic Cu-Ni sulfide deposits more reliably. It is necessary to carefully reevaluate the previous chronological data for the complexes. The Cu-Ni-bearing mafic-ultramafic complexes have the ages similar to those of postcollisional A-type granites in the same area, implying that they could be related to the delamination of lithospheric mantle and upwelling and partial melting of asthenospheric mantle in postcollisional setting. Therefore, the Cu-Ni-bearing mafic-ultramafic complexes are a direct indicator of vertical growth of the continental crustal in the Central Asian Orogenic Belt.
Geochronology,geochemistry and Sr-Nd-Pb isotopic composition of mafic intrusive rocks in Wuqiagou area,north Xinjiang:Constraints for mantle sources and deep processes.
新疆北部乌恰沟地区镁铁质侵入岩的年代学、地球化学和Sr-Nd-Pb同位素组成:对地幔源区特征和深部过程的约束

CHEN LiHui,HAN BaoFu,
陈立辉
,韩宝福

岩石学报 , 2006,
Abstract: 阿尔泰造山带东段的乌恰沟地区发育大量镁铁质侵入岩(岩脉或小岩体),包括闪长玢岩和具堆积结构的角闪辉长岩和橄榄辉长岩。锆石SHRIMP U-Ph同位素定年结果说明这些镁铁质岩浆的侵位时间为257.4±5.3Ma,与峨眉山玄武岩相近(259±3Ma)。在微量元素原始地幔标准化图上,它们共同的特征是富集大离子亲石元素,亏损Nb和Ta,具K和Pb的正异常,LREE相对HREE富集,即具弧火山岩的地球化学特征。同时它们之间还存在互补的地球化学特征,如闪长玢岩存在Ba、Sr、Eu、P和Ti的负异常,橄榄辉长岩具有Ba、Sr、Eu、P的正异常,而角闪辉长岩具有Ti的正异常。如果扣除围岩混染和后期流体交代的影响,这些岩石的Sr-Nd-Pb同位素组成基本一致,因此闪长玢岩和两种辉长岩分别代表同源岩浆因结晶分离作用形成的演化岩浆和堆晶岩。乌恰沟晚二叠世镁铁质侵入岩和新疆北部早二叠世与铜镍矿有关的基性-超基性杂岩体都具有与弧火山岩相似的地球化学特征,反映了被俯冲改造的陆下岩石圈地幔的地球化学特征。但是与后者相比,前者的Mg~#值、ε_(Nd)(t)值和La/Nb比明显偏低,暗示存在软流圈地幔来源物质的显著贡献。综合阿尔泰乌恰沟地区镁铁质侵入岩的年代学、地球化学和同位素组成特征,我们推测该区在晚二叠世存在地幔柱与岩石圈地幔之间的相互作用。
Discovery of mantle and lower crust xenoliths from early Cretaceous volcanic rocks of southwestern Tianshan, Xinjiang
Baofu Han,Xuechao Wang,Guoqi He,Tairan Wu,Maosong Li,Yulin Liu,Shiguang Wang
Chinese Science Bulletin , 1999, DOI: 10.1007/BF02886139
Abstract: In Tuoyun area of southwestern Tianshan, mantle and lower crust xenoliths are present in the volcanic rocks with ages of 101–123 Ma. Mantle xenoliths include mineral megacrysts such as kaersutite and pargasite, feldspar, biotite, and rare pyroxene and rock fragments such as perodotite, pyroxenite, amphibolite, and rare glimmerite. Lower crust xeno-liths are mainly banded and massive granulite. The volcanic rocks were produced by within-plate magmatism. Occurrence of hydrous and volatile mineral megacrysts, amphibolite, and some pyroxenite containing hydrous and volatile minerals indicates that mantle metasomatism was intense. Undoubtedly, this discovery is very important to understanding of the crust-mantle structure and geodynamic background in depth in southwestern Tianshan and geological correlation with adjacent regions.
SHRIMP zircon U-Pb dating of the Ertaibei granodiorite and its enclaves from eastern Junggar, Xinjiang,and geological implications
新疆东准噶尔二台北花岗岩体和包体的SHRIMP锆石U-Pb年龄及其地质意义

LI ZongHuai,HAN BaoFu,
李宗怀
,韩宝福,宋彪

岩石学报 , 2004,
Abstract: 高精度SHRIMP锆石U-Pb定年结果表明,二台北花岗闪长岩的形成时代为299.3±8.7Ma,代表了岩浆侵入到上地壳的年龄;其中所含的暗色微粒包体形成时代为301.5±6.6Ma,与寄主岩石的时代在误差范围内完全相同。结合野外、岩相学和主量、微量元素地球化学特征分析,偏基性的暗色微粒闪长质包体与寄主花岗闪长质岩浆并非有直接成因联系,包体可能是由过冷的镁铁质岩浆混入到花岗闪长质岩浆中发生快速冷凝,然后被花岗闪长质岩浆携带、侵入到上地壳中形成的。因此,花岗闪长岩及其包体才能够具有相同的SHRIMP锆石U-Pb年龄。二台北岩体与东准噶尔广泛分布的以碱性花岗岩为代表的后碰撞花岗岩具有相同的形成时代,乌伦古-斋桑泊断裂北侧的花岗闪长岩、石英闪长岩等和断裂南侧的碱性花岗岩、钾长花岗岩等的形成时代非常相近,应该是同一期岩浆活动的产物,无法区分出先后顺序。而这些岩体普遍具有低的~(87)Sr/~(86)Sr初始比值和正的ε_(Nd)(t)值,表明它们都是新疆北部晚古生代幔源岩浆活动的产物,它们的形成和演化提供了准噶尔地区后碰撞幔源岩浆底侵作用导致大陆地壳垂向生长过程的信息。
K-Ar Chronology and Geochemistry of Jining Cenozoic basaits, Inner Mongolia, and geodynamic Implications.
内蒙古集宁新生代玄武岩的K-Ar年代学和地球化学及其深部动力学意义

ZHANG WenHui,HAN BaoFu,
张文慧
,韩宝福

岩石学报 , 2006,
Abstract: 对内蒙古集宁地区四个新生代玄武岩剖面进行了K-Ar年代学及岩石地球化学的系统研究。K-Ar定年结果显示,集宁玄武岩的主要喷发期在晚渐新世至中新世,可分为三个喷发旋退:~33Ma、22.8~22.1Ma和12.2~9.4Ma。玄武岩由拉斑玄武岩和碱性玄武岩组成。SiO2和MgO含量变化范围分别为46.4~52.3wt%和5.1~7.8wt%,微量元素特征总体上与OIB相似。集宁的三个喷发旋迴有一个共同的特点,即在每一旋迴底部,先出现的均为拉斑玄武岩,向上变为碱性玄武岩。从第一至第三旋迴,碱性玄武岩Yb含量逐渐增加,La/Yb比值逐渐减小,暗示集宁地区在这一时期曾发生过岩石圈减薄。由于集宁碱性玄武岩的地球化学特征从早期至晚期逐渐接近拉斑玄武岩,且两者的Nd、Sr同位素特征相似,因此,该区岩石圈的减薄可能是软流圈热物质上涌,对岩石圈产生底蚀作用的结果。拉斑玄武岩的存在可能代表了岩石圈减薄在地表的显示,是被底蚀的岩石圈与少量上涌软流圈的熔融物质混合的产物。通过对比集宁、汉诺坝、赤峰、阿巴嘎、大同等地新生代玄武岩的K-Ar年龄和岩性分布特征,推测这一区域的岩石圈减薄在时间、空间及减薄强度上均存在不均一性。
Timing of major suture zones in North Xinjiang, China: Constraints from stitching plutons
“钉合岩体”与新疆北部主要缝合带的形成时限

HAN BaoFu,GUO ZhaoJie,HE GuoQi,
韩宝福
,郭召杰,何国琦

岩石学报 , 2010,
Abstract: This study introduces the concept of stitching pluton because a stitching pluton can provide an upper-age bound for the timing of an accretionary or a collisional event in orogens, with an emphasis on the geochronological constraints from the stitching plutons crosscutting major suture zones on the timing of accretionary and collisional events in North Xinjiang. A combination of the oldest stitching plutons and the youngest ophiolitic rocks within the major suture zones in North Xinjiang may tightly constrain the timing of these major suture zones. The Irtysh-Zaysan suture zone between the Altai terrane in the north and the Zharma-Saur magmatic arc in the south, the North Tian Shan suture zone between the Junggar terrane in the north and the Kazakhstan-Yili terrane in the south, and the South Tian Shan suture zone between the Kazakhstan-Yili terrane in the north and the Tarim craton in the south were formed during the Late Carboniferous, whereas the other ophiolite zones in East Junggar and West Junggar during the Early Carboniferous or earlier. The western Junggar accretionary complex was commonly crosscut by many Late Carboniferous stitching plutons, but it is unclear that these plutons were generated by either subduction-related or post-collisional magmatism during the Late Carboniferous so that more work needs to be done in the future in order to eliminate the uncertainty. The pre-existing data are in support of Late Paleozoic orogens, without evidence for Triassic collision, in North Xinjiang. Particularly, the stitching plutons within the South Tian Shan provide an upper-age bound for the timing of the South Tian Shan suture zone and strong evidence against the suspected Late Permian radiolarians from the Baleigong ophiolite, and they also help re-interpret the Triassic zircon U-Pb ages from the high and ultrahigh pressure metamorphic rocks within the suture zone.
Geochemistry,Sr-Nd isotopes and tectonic implications of two generations of Late Paleozoic plutons in northern West Junggar,Northwest China
西准噶尔北部晚古生代两期侵入岩的地球化学、Sr-Nd同位素特征及其地质意义

CHEN JiaFu,HAN BaoFu,ZHANG Lei,
陈家富
,韩宝福,张磊

岩石学报 , 2010,
Abstract: 西准噶尔北部发育构造环境截然不同的晚古生代两期侵入岩体,它们的空间分布与地球化学特征存在明显差异。早石炭世侵入岩包括辉石闪长岩、二长闪长岩、花岗闪长岩、二长花岗岩和钾长花岗岩,仅分布于晚古生代扎尔玛-萨吾尔岩浆弧内,可能与额尔齐斯-斋桑洋的南向俯冲有关。它们的A/CNK和A/NK比值变化范围分别为0.86~1.03和1.24~1.86,属于偏铝质-弱过铝质岩石。Al2O3、CaO、Na2O含量较高,Na2O/K2O比值普遍大于1.2;LREE、HREE分馏明显,(La/Lu)N=4.50~26.03,无明显的Eu异常;富集大离子亲石元素(K、Rb、Ba)、Pb和Sr,亏损Nb、Ta、P和Ti,具有I型花岗岩的特征。早石炭世侵入岩的Sr同位素初始比值(ISr)为0.70408~0.70912,εNd(t)值为+6.09~+7.25,单阶段Nd模式年龄(tDM1)为527~593 Ma。元素和同位素地球化学特征表明早石炭世岩体(不包括阿布都拉二长花岗岩)可能是受交代的亏损地幔部分熔融并发生岩浆混合之后再经过结晶分异形成的,而阿布都拉二长花岗岩可能来源于洋壳的部分熔融。晚石炭世-中二叠世侵入岩以钾长花岗岩为主,遍布西准噶尔北部及相邻的各个构造单元,是后碰撞岩浆活动的产物。它们的A/CNK和A/NK比值变化范围分别为0.92~0.99和1.03~1.27,属于偏铝质岩石。Al2O3、MgO、CaO的含量很低,全碱含量很高(8.6%~9.7%),Na2O/K2O比值为0.9~1.1;REE总量很高(平均值为196×10-6),LREE、HREE分镏程度较弱,(La/Lu)N=3.32~5.36,Eu负异常明显;强烈亏损Ba、Sr、P、Ti,中度亏损Nb和Ta,具有A型花岗岩的特征。εNd(t)值为+5.26~+7.26,单阶段Nd模式年龄(tDM1)为502~655Ma。元素和同位素地球化学特征表明晚石炭世-中二叠世A型花岗岩体可能是由被流体交代的亏损地幔熔融生成的玄武质岩浆在上升过程中(可能发生岩浆混合)发生高度结晶分异之后的产物,是后碰撞环境下的板片断离导致软流圈物质上涌的结果。
Geochronology and geochemistry of Early Paleozoic granitic plutons from Subei and Shibaocheng areas, the western segment of Central Qilian and their geological implications
中祁连西段肃北、石包城地区早古生代花岗岩年代学、地球化学特征及其地质意义

LI JianFeng,ZHANG ZhiCheng,HAN BaoFu,
李建锋
,张志诚,韩宝福

岩石学报 , 2010,
Abstract: 对中祁连西段肃北、石包城地区花岗岩进行了精确的SHRIMP 锆石U-Pb 定年和地球化学成分分析。SHRIMP 锆石U-Pb定年表明,肃北岩体和石包城岩体侵位年龄均属早古生代,分别为415±3Ma和435±4Ma。地球化学分析表明,随着SiO2含量的增加,TiO2、Al2O3、MgO、CaO、Fe2O3、Mg#等的含量相应下降,这表明该套岩石是角闪石和斜长石的分离作用控制下岩浆分异的产物。肃北岩体稀土元素总量较高,∑REE介于118.7×10-6~202.2×10-6之间,轻稀土相对富集,(La/Yb)N=11.1~16.5,具微弱δEu异常。石包城岩体稀土元素总量较低,∑REE介于19.7×10-6~59.0×10-6之间,轻稀土相对富集,(La/Yb)N=6.68~44.8,δEu正异常而呈倒“V”型。岩石富集大离子亲石元素Rb、K、Sr等,亏损Nb和Ta等高场强元素以及P和Ti。在微量元素判别图解上,肃北岩体所有岩石投影点落后碰撞区域,石包城岩体的岩石投影点落在岛弧区。结合区域地质背景,石包城岩体可能产出于洋壳俯冲的岛弧环境,而肃北岩体是加里东造山作用晚期陆陆碰撞后的产物。
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