Liaoning Institute of Mineral Exploration

Shenyang, China

Liaoning Institute of Mineral Exploration

Shenyang, China
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Bi J.-H.,Jilin University | Ge W.-C.,Jilin University | Yang H.,Jilin University | Wang Z.-H.,Jilin University | And 4 more authors.
Journal of Asian Earth Sciences | Year: 2017

The Yuejinshan Complex, a remnant of the late Paleozoic western Paleo-Pacific Ocean, is located between the Jiamusi Massif and the Nadanhada Terrane in NE China. The complex consists of strongly deformed metaclastic rocks, marbles and metabasaltic lavas. The basalts have undergone hydrothermal alteration, greenschist facies regional metamorphism, and surface oxidation. These rocks can be divided into two broad rock groups based on whole-rock geochemical and Sr-Nd isotopic characteristics: (1) mid-ocean ridge basalt (MORB-type) tholeiites that range in composition from light rare earth element (LREE)-depleted varieties (N-MORB; (La/Sm)N <1), showing highly positive ε Nd(t) ratios (+10.2 to +10.5), to LREE-enriched tholeiites (E-MORB; (La/Sm)N >1); and (2) ocean island basalt (OIB-type) alkaline lavas, characterized by less positive ε Nd(t) ratios (+6.20 to +8.61), with significant enrichments in LILE, HFSE, LREE, and MREE, and slight depletions in HREE, relative to average N-MORB. Trace element and isotope systematics indicate that the tholeiitic basaltic rocks were derived from partial melting of a depleted MORB source in the spinel facies mantle, whereas the source of the E-MORB was a depleted MORB mantle (DMM) source significantly enriched by OIB-type components. In contrast, the alkaline basalts were generated from an enriched OIB-type mantle source in the garnet facies and continued melting to spinel facies mantle depths. Therefore, the mafic volcanic rocks of the Yuejinshan Complex, located above the oceanic plate of the Paleo-Pacific Ocean, were most likely derived from chemically heterogeneous mantle sources during back-arc basin spreading and plume-related volcanism. The westwards subduction of the Paleo-Pacific Ocean lithosphere during the late Carboniferous to middle Permian resulted in the back-arc lavas, seamounts, and other oceanic fragments accreting onto the eastern Jiamusi Massif, forming the Yuejinshan Complex. © 2017 Elsevier Ltd.


Yang H.,Jilin University | Ge W.-C.,Jilin University | Yu Q.,Jilin University | Ji Z.,Jilin University | And 3 more authors.
Journal of Asian Earth Sciences | Year: 2016

We report zircon U-Pb age data, Hf isotopes, and bulk-rock geochemical data for the Middle to Late Triassic granitoids in the Taerqi-Chabaqi-Kutihe region within the Xing'an Block of the central Great Xing'an Range, northeast China. Euhedral to subhedral zircon grains were extracted from the nine representative granitoids. These zircons exhibit oscillatory zoning typical of a magmatic origin. The zircon U-Pb determinations on the monzogranite, syenogranite and quartz diorite samples yielded ages between 244Ma and 206Ma, which essentially suggests that the magmatism in the Xing'an Block occurred during the Middle to Late Triassic period. Geochemically, these granitoids have SiO2=62.97-76.31wt%, A/CNK=1.03-1.51, and K2O/Na2O=0.40-2.39, we infer that they belong to high-K calc-alkaline series and are peraluminous I-type granites in nature. The major and trace element systematics indicate that these granitoids have different origins. Among them, the 244Ma syenogranite of Taerqi and the 230-206Ma monzogranite and syenogranite of Kutihe were probably generated from partial melting of pre-existing juvenile arc-type rocks in a relatively shallow crustal level. The 210Ma quartz diorite of Chabaqi likely originated from the hybridization between a depleted mantle component and the juvenile subducted oceanic crustal materials that were buried to depths of the middle to lower continental crust. The 212Ma monzogranite and syenogranite of Kutihe were probably generated from the partial melting of miscellaneous lower crustal materials at high pressure conditions. By combining these new data with regional geological data, we conclude that the early Mesozoic evolution of the central Great Xing'an Range was governed by two superimposed tectonic regimes, i.e., (1) post-orogenic extension due to slab break-off after the closure of the Paleo-Asian oceanic basin along the Hegenshan-Heihe suture belt, and (2) back-arc extension associated with the southward subduction of Mongol-Okhotsk oceanic plate. © 2016 Elsevier Ltd.


Zhao J.,Jilin University | Lu W.,Jilin University | Zhang F.,Jilin University | Lu C.,Jilin University | And 3 more authors.
Marine Pollution Bulletin | Year: 2014

Evaluation of CO2 solubility-trapping and mineral-trapping by microbial-mediated process was investigated by lab experiments in this study. The results verified that microbes could adapt and keep relatively high activity under extreme subsurface environment (pH<5, temperature>50°C, salinity>1.0mol/L). When microbes mediated in the CO2-brine-sandstone interaction, the CO2 solubility-trapping was enhanced. The more biomass of microbe added, the more amount of CO2 dissolved and trapped into the water. Consequently, the corrosion of feldspars and clay minerals such as chlorite was improved in relative short-term CO2-brine-sandstone interaction, providing a favorable condition for CO2 mineral-trapping. Through SEM images and EDS analyses, secondary minerals such as transition-state calcite and crystal siderite were observed, further indicating that the microbes played a positive role in CO2 mineral trapping. As such, bioaugmentation of indigenous microbes would be a promising technology to enhance the CO2 capture and storage in such deep saline aquifer like Erdos, China. © 2014 Elsevier Ltd.


PubMed | Jilin University and Liaoning Institute of Mineral Exploration
Type: Journal Article | Journal: Marine pollution bulletin | Year: 2014

Evaluation of CO solubility-trapping and mineral-trapping by microbial-mediated process was investigated by lab experiments in this study. The results verified that microbes could adapt and keep relatively high activity under extreme subsurface environment (pH<5, temperature>50 C, salinity>1.0 mol/L). When microbes mediated in the CO-brine-sandstone interaction, the CO solubility-trapping was enhanced. The more biomass of microbe added, the more amount of CO dissolved and trapped into the water. Consequently, the corrosion of feldspars and clay minerals such as chlorite was improved in relative short-term CO-brine-sandstone interaction, providing a favorable condition for CO mineral-trapping. Through SEM images and EDS analyses, secondary minerals such as transition-state calcite and crystal siderite were observed, further indicating that the microbes played a positive role in CO mineral trapping. As such, bioaugmentation of indigenous microbes would be a promising technology to enhance the CO capture and storage in such deep saline aquifer like Erdos, China.

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