Showing papers in "Lithos in 2018"

TL;DR: In this paper, the authors examine the global distribution of Archaean and modern igneous rock's compositions, without relying on preconceptions about the link between rock compositions and tectonic sites.

TL;DR: In this article, the authors used rocks recovered from subduction zones, together with insights from thermomechanical modelling, to provide a new dynamic vision of the nature, structure and properties of the plate interface and to bridge the gap between the mechanical behavior of active subducting zones (e.g.,coupling inferred from geophysical monitoring) and fossil ones (i.e.couplings required to detach and recover subducted slab fragments).

TL;DR: A case study of two apatite samples from the Akia Terrane in Greenland that help chart some of the post magmatic history of this region has been presented in this article, where the U-Pb and trace element chemistry and morphology support an interpretation in which these apatterite crystals are originally igneous and record cooling after metamorphism, with subsequent generation of discrete new rims.

TL;DR: In this paper, two types of granitic rocks (albite granite and greisenized granite) from the Laiziling pluton in the Xianghualing area were studied to elucidate magma evolution and the genesis of mineralization.

TL;DR: In this article, Hu et al. reported U-Pb ages and trace element abundances for zircon crystals, where apatite and K-feldspar inclusions are observed, from diorite porphyry in the Weibao deposit, East Kunlun Mountains, Northern Tibetan Plateau.

TL;DR: Olivine is the dominant component in kimberlites as discussed by the authors, where it occurs as individual grains of variable size (>1.5 cm to 2700 major and minor element analyses of olivine from 17 Kimberlite localities from southern Africa, Canada, Greenland and Russia.

TL;DR: Zhang et al. as mentioned in this paper presented new zircon U-Pb and whole-rock geochemical data for intrusive rocks in the Xing'an Massif of NE China, with the aim of furthering our understanding of the evolution and spatial influence of the Mongol-Okhotsk tectonic regime.

TL;DR: In this paper, the authors reported new cassiterite U-Pb ages and Pb isotopes of sulfides for the Shirenzhang tungsten deposit, combined with new zircon UPb dates and Hf isotopes, elemental geochemistry and Sr-Nd-pb isotope of the concealed granitic rocks, with aims to elucidate the origin of the ore-related granites and the link between the tengsten mineralization and granitic magmatism.

TL;DR: In this paper, the in-situ zircon U-Pb dating by LA-ICPMS reveals that the Sindreth rhyolites were erupted at 769-762 ǫ Ma.

TL;DR: In this paper, the authors present systematic major, trace and rare earth element (REE) concentrations for garnets from the skarn zone, discuss the factors controlling the incorporation of trace elements into the garnets, and constrain the formation and evolution of the garnet from skarn in Xinqiao deposit.

TL;DR: In the Advocate ophiolite (Newfoundland, Canada) as mentioned in this paper, a sequence of carbonation reactions is uniquely preserved in three main growth zones characteristic of listvenite magnesite: (i) an inner zone of magnetite-bearing, Fe-poor, Mn-bearing Magnesite formed by carbonation of lizardite, brucite and olivine from Atg-serpentinite; (ii) an outer zone of Fe-rich Magnesites formed by Carbonation of antigorite and in equilibrium with Fepoor talc; and

TL;DR: In this paper, the authors deal with arc-type and subsequent bimodal volcanic rocks interbedded with (late) Cretaceous sedimentary formations near Gaize, central Tibet that shed new light on the Tethyan evolution along the Bangong-Nujiang suture.

TL;DR: The formation of the Shiquanhe-Yunzhug-Namu Tso ophiolite melange zone (SNMZ) within the Lhasa Terrane, Tibetan Plateau is key to understanding the Mesozoic tectonic evolution of this terrane.

TL;DR: In this paper, the authors reported new whole-rock geochemical and Sr-Nd isotopic data, and in situ zircon U-Pb ages for three typical A-type granitic intrusions (syenogranite, K-feldspar granite and monzonitic granite) and one dioritic pluton in the central Eastern Tianshan, NW China, in order to constrain their petrogenesis, tectonic setting and geodynamic evolution.

TL;DR: The age of Emeishan volcanism is consistent with the Wuchiapingian climate cooling event, supporting a potential linkage between these two phenomena as discussed by the authors, which can be constrained to between ca. 260 and257.8 Ma.

TL;DR: In this paper, a modal analysis including the discrimination of xenocrysts from magmatic phases was combined with mineral chemistry determinations to reconstruct a whole-rock composition of kimberlite melts.

TL;DR: IODP Expedition 357 used two seabed drills to core 17 shallow holes at 9 sites across the Atlantis Massif ocean core complex (Mid Atlantic Ridge 30°N).

TL;DR: In this paper, the authors present new zircon U-Pb ages, whole-rock geochemistry and Sr-Nd isotopic compositions for four Late Paleozoic felsic plutons in Eastern Tianshan (or Tienshan in some literatures) in order to constrain the tectonic evolution of the southern CAOB.

TL;DR: The Wulonggou Pluton is located in the eastern segment of the Eastern Kunlun Orogenic Belt, NW China, and consists of mainly alkali-feldspar granites covering an area of about 150 km2.

TL;DR: In this article, the authors present new mineral major and trace element data and bulk-rock reconstructions for 26 MARID and PIC samples from the Kimberley-Barkly West area in South Africa.

TL;DR: The authors showed that the volcanic ashes were originated from alkaline magmatism, followed by a continuous hydrothermal-weathering process, resulting in precipitation of the leached critical metals in the deposit.

TL;DR: In this paper, the authors report ages and geochemical data for newly identified gabbro sheets/stocks emplaced in the lower part of the early Paleozoic accretionary wedge at the NE Pamir, the western section of the West Kunlun Orogenic Belt (WKOB).

TL;DR: A comprehensive analysis of the major and trace element, mineral, and Sr, Nd, Pb and Mg isotopic compositions of late Cenozoic intraplate basaltic rocks from central and southern Vietnam is presented in this article.

TL;DR: In this article, the major and trace element compositions of apatites from contemporary A1- and A2-type granites at different localities along the Lower Yangtze River Belt were investigated to decipher their discrepant source processes.

TL;DR: In this article, the authors presented new zircon LA-ICP-MS U-Pb age and whole-rock geochemical data for the middle Permian to Middle Jurassic granitoids in the western Erguna and central Xing'an massifs.

TL;DR: In this paper, three mineralization-related granites including granite porphyry dykes (GP), biotite granitic stocks (BG), and white granitic dyke (WG) were identified in the Zhuxi tungsten deposit.

TL;DR: In this paper, the age and petrology of volcanic rocks from the Panjeh basaltic-andesitic rocks complex in the northern SaSZ, southwest of Ghorveh city were reported.

TL;DR: In this article, the authors compare the element partitioning between leucosome and restite of low and high-temperature migmatites and demonstrate the dominant roles of protolith composition, melting conditions, and melt extraction/evolution for the distribution of Sn between melt and restites and, thus, the Sn content of melts.

TL;DR: Zhang et al. as mentioned in this paper proposed a geodynamic model for the 145-135-Ma W-Sn mineral system and related magmatism in the southwestern domain of the SCMB.