Geoscience frontiers
Papers 883
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Abstract The Gudui geothermal field records the highest temperature at equivalent borehole depths among the mainland hydrothermal systems in mainland China. Located about 150 km southeast of Lhasa City, the capital of Tibet, the Gudui geothermal field belongs to the Sangri–Cuona rift belt, also known as the Sangri–Cuona geothermal belt, and is representative of the non-volcanic geothermal systems in the Himalayas. In this study, oxygen-18 and deuterium isotope compositions as well as 87Sr/86Sr r...
#1Renbiao Tao (PKU: Peking University)
#2Lijuan Zhang (PKU: Peking University)
Last.Lifei Zhang (PKU: Peking University)H-Index: 42
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Abstract Knowing the phase relation of carbon-bearing phases at high-pressure (HP) and high-temperature (HT) condition is essential for understanding the deep carbon cycle in the subduction zone. In particular, the phase relation of carbon-bearing phases is also strongly influenced by redox condition of subduction zones, which is poorly explored. Here we summarized the phase relation of carbon-bearing phases (calcite, aragonite, dolomite, magnesite, carbonaceous graphite, hydrocarbon) in HP meta...
#1Levente PatkóH-Index: 3
#2Nóra LiptaiH-Index: 2
Last.Csaba SzaboH-Index: 110
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#1Kai-tuo ShiH-Index: 1
#2Ke-yong WangH-Index: 4
Last.Rui WangH-Index: 4
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#1V. Markwitz (UWA: University of Western Australia)H-Index: 8
#2Christopher L. Kirkland (Curtin University)H-Index: 35
Last.Klaus Gessner (Geological Survey of Western Australia)H-Index: 18
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Abstract Preservation bias may significantly impact the application of detrital zircon geochronology in reconstructing Earth surface processes. Here we compare detrital zircons from the actively eroding Murchison River channel in Western Australia with Ordovician fluvial sediments that have drained similar source rocks along the western margin of the West Australian Craton. In addition to standard analysis of detrital zircon age spectra we apply multivariate statistics to test the relation betwe...
#1Tom WiseH-Index: 2
#2Stephan Thiel (University of Adelaide)H-Index: 12
Abstract Over the last two decades, co-located seismic and magnetotelluric (MT) profiles provided fundamental geophysical data sets to image the Australian crust. Despite their complimentary nature, the data are processed and often interpreted separately without common processes in mind. We here qualitatively compare 2D resistivity inversion models derived from MT and seismic reflection profiles across a region of Archean–Proterozoic Australia to address the causes of variations in seismic respo...
#1T. G. Shumilova (U.H.: University of Hawaii at Manoa)H-Index: 2
#2Vasily V. Ulyashev (RAS: Russian Academy of Sciences)H-Index: 1
Last.N. S. Kovalchuk (RAS: Russian Academy of Sciences)H-Index: 1
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Abstract Impact diamond is one of perspective natural type of superhard carbon materials, forming huge resources sometimes, such as Popigai impact structure counting the largest diamond storage on the Earth. By present, there are two known types of impact diamonds – after-graphitic and after-coal varieties formed from different carbon precursors. Here we present for the first time a new impact diamond type – diamond fossils, named by “karite”, formed about 70 Ma from unmetamorphosed organics in ...
#1Yayun Liang (China University of Geosciences)
#2Xuefei Liu (China University of Geosciences)H-Index: 13
Last.Yao Ma (China University of Geosciences)H-Index: 1
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Abstract A section from the Linglong gold deposit on the northwestern Jiaodong Peninsula, East China, containing Late Mesozoic magmatic rocks from mafic and intermediate dikes and felsic intrusions, was chosen to investigate the lithospheric evolution of the eastern North China Craton (NCC). Zircon U–Pb data showed that low-Mg adakitic monzogranites and granodiorite intrusions were emplaced during the Late Jurassic (∼145 Ma) and late Early Cretaceous (112–107 Ma), respectively; high-Mg adakitic ...
#1L. Giacomini (INAF)H-Index: 1
#2MatteoMassironi (UNIPD: University of Padua)H-Index: 34
Last.Pasquale J. Palumbo (University of Naples Federico II)H-Index: 28
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Abstract The global tectonics of Mercury is dominated by contractional features mainly represented by lobate scarps, high relief ridges, and wrinkle ridges. These structures are the expression of thrust faults and are linear or arcuate features widely distributed on Mercury. Locally, these structures are arranged in long systems characterized by a preferential orientation and non-random spatial distribution. In this work we identified five thrust systems, generally longer than 1000 km. They were...
1 CitationsSource
#1C.J. Spencer (Queen's University)
#2Christopher L. Kirkland (Curtin University)H-Index: 35
Last.J. Liebmann (Curtin University)H-Index: 1
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Abstract The combination of U–Pb and Lu–Hf compositions measured in zircon crystals is a remarkably powerful isotopic couplet that provides measures on both the timing of mineral growth and the radiogenic enrichment of the source from which the zircon grew. The U–Pb age documents the timing of zircon crystallization/recrystallization and Hf isotopes inform on the degree to which the host melt was derived from a radiogenic reservoir (e.g. depleted mantle) versus an unradiogenic reservoir (e.g. an...
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