Showing papers in "Lithos in 2013"

TL;DR: A review of the geochemistry of serpentinites, based on the compilation of ~900 geochemical data of abyssal, mantle wedge and exhumed serpentinite after subduction, is presented in this paper.

TL;DR: In this paper, a model to explain element transfer out of subducting slabs that involves serpentinite subduction and slab partial melting is presented, which is consistent with the geology of blueschist and eclogite-facies terranes and key geochemical and isotopic features of arc lavas.

TL;DR: In this paper, the ages of 50 igneous rock samples from the Urumieh-Dokhtar magmatic arc (UDMA) and Sanandaj-Sirjan structural zone (SSZ) in Iran were reported.

TL;DR: In this article, the authors presented the petrological observations and the Raman spectroscopy and XRD analyses of natural serpentinites from the Alpine paleo-accretionary wedge.

TL;DR: In this article, a new methodology using Large Igneous Provinces (LIPs) offers an opportunity for fast-tracking progress toward robust Precambrian reconstructions.

TL;DR: In this paper, the authors used thermodynamic computations to examine the equilibrium mineral assemblages, mineral compositions and the chemistry of fluids during serpentinization of 21 different ultramafic rock compositions and 10 distinct compositions of olivine between 25°C and 400°C at 50MPa.

TL;DR: Serpentinization is a key phenomenon for understanding the geodynamics of subduction zones in the 10-200 km depth range as discussed by the authors. But their rheological properties have a strong influence on deformation partitioning and seismicity at depths.

TL;DR: Zircon U-Pb dating and whole-rock geochemical analysis have been undertaken on Late Paleozoic-Early Mesozoic intrusive rocks of central Jilin Province, NE China, with the aim of constraining the tectonic evolution of the eastern segment of the northern margin of the North China Block (NCB) during the Late PDE as mentioned in this paper.

TL;DR: A detailed zircon dating and geochemical and Sr-Nd-Hf isotopic study of this suite of rocks has been under- taken in order to clarify this important issue as mentioned in this paper.

TL;DR: In this paper, the authors summarize the uptake of carbon and sulfur during serpentinization of seafloor peridotites, and discuss the fate of these volatiles during subduction of serpentinite.

TL;DR: Zircon dating results reveal that the magmatic precursors of the supracrustal metapelites and granitoid gneisses were generated at 2.54-2.53-Ga and 2.57−2.55-Ga, respectively.

TL;DR: In this article, the authors identify the major element signature of pyroxenite partial melts and evaluate to what extent this signature can be transmitted to the basalts erupted at oceanic islands and mid-ocean ridges.

TL;DR: In this paper, the Cretaceous Xigaze ophiolite is best exposed at the central Yarlung Zangbo Suture Zone (YZSZ, Tibet).

TL;DR: In this article, Petrography, zircon U-Pb ages and Hf isotopic data as well as whole-rock Sm-Nd isotope data for mafic granulites, metapelitic rocks and high-grade marble from the Kongling Complex in the Yangtze Block, South China are presented.

TL;DR: A model for the incorporation of alumina in FeOMgO-Al 2 O 3 -SiO 2 -H 2 O (FMASH) serpentinites has been developed by considering ideal Tschermak (Al 2 Mg − 1 Si − 1 ) solid solution in antigorite as discussed by the authors.

TL;DR: The platinum-group element (PGE) systematics of continental mantle peridotites show large variability, reflecting petrogenetic processing of the upper mantle during partial melting and melt/fluid percolation inside the lithosphere as mentioned in this paper.

TL;DR: In this article, the authors reported the first time the zircon LA-ICP-MS U-Pb age and Hf isotopic composition data, whole-rock major and trace ele- ment composition data and Sr-Nd isotopic data from the diverse Early Cretaceous magmatic rocks from Yanhu.

TL;DR: In this article, a set of new U-Pb zircon geochronological, elemental and Sr-Nd isotopic data are presented for several gabbroic plutons, which were recently identified in the Cathaysia Block.

TL;DR: Inverse modeling of zircon and apatite fission track and (U-Th)/He data from throughout the Central and Western Cordilleras reveals three periods of rapid cooling since the Late Cretaceous as discussed by the authors.

TL;DR: Zircon U-Pb and Hf isotopic data along with whole-rock elemental and Sr-Nd isotope data for early Paleozoic granitoids from the Tengchong, Baoshan and Shan-Thai Blocks that originally formed along the northern margin of Gondwana and now lie in SW Yunnan constrain the character of early paleozoic orogenesis along the margin this paper.

TL;DR: The deformed peridotites experienced a complex evolution, i.e., they were formed initially as high-degree melt extraction residues and later were subjected to three main stages of metasomatic modification as discussed by the authors.

TL;DR: In this article, the authors presented the first detailed SHRIMP zircon U-Pb chronology, mineral chemistry, major and trace element, and isotope geochemistry of three Middle Triassic plutons (Yuqikapa, Muztaga and Taer) and their microgranular enclaves in the western Kunlun orogen.

TL;DR: In this paper, the authors performed a μ-XANES analysis at the Fe K-edge on thin sections of peridotites with various degrees of serpentinization from ODP Leg 153 (MARK region, 23°N).

TL;DR: The Milin charnockites were most probably produced by partial melting of subducted Neo-Tethyan oceanic crust that was followed by adakitic melt-mantle interaction, minor crustal assimilation and fractional crystallization of amphibole+plagioclase as discussed by the authors.

TL;DR: Zhang et al. as mentioned in this paper showed that the Linglong granite is weakly peraluminous I-type granite, and is characterized by high SiO 2, Sr and La, but low MgO, Y and Yb contents, strongly fractionated REE pattern and high Sr/Y and La/Yb ratios.

TL;DR: In this article, geochemical and Sr Nd analyses of Eocene-Oligocene magmatic rocks in the Lut-Sistan region, eastern Iran shed light on their origin and the regional geodynamic evolution.

TL;DR: In this article, the authors reported detailed petrological, geochronological, geochemical and Sr-Nd-Hf isotopic data for recently identified norites and hypersthene-bearing hornblendites in the Milin area, southern Lhasa sub-block.

TL;DR: In this article, it was shown that the formation of magnetite was accompanied by the extraction of iron from the early-formed serpentine and brucite assemblage, making them both more magnesian.