Showing papers in "Journal of Asian Earth Sciences in 2014"

TL;DR: In this article, the authors used new field observations and existing studies to shed new light on the origin and significance of two NW-SE striking orogens in NW and NE Vietnam, and concluded that the architecture of each belt is a stack of NE-directed nappes formed either under deep ductile synmetamorphic conditions, or under shallow depth in the SW and NE parts, respectively.

TL;DR: In this paper, the key role of postsubduction related porphyry ore systems is emphasized, comprising collisional and post-collisional Cu-Mo porphyries during the geological history of the Eurasian continent.

TL;DR: In this paper, the authors present the current understanding of the Mesozoic ophiolites of Iran for the international geoscientific audience and summarize field, chemical and geochronological data from the literature and their own unpublished data.

TL;DR: In this paper, the development of the orogenic collages in central Eurasia has been studied from the Ordovician to the Jurassic, with the most significant porphyry Cu-Au/Mo and Au-Cu deposits associated with magmatic arcs within the extensive subduction-accretion complex.

TL;DR: A review of available petrological, geochonological and geochemical data for late Mesozoic to Recent igneous rocks in the South China Sea (SCS) and adjacent regions and a discussion of their petrogeneses and tectonic implications is presented in this article.

TL;DR: In this paper, the authors used satellite data, topographic maps and digital elevation model (DEM) to extract various parameters at various spatial scales, including geomorphic indices and morphotectonic parameters supported by field evidences.

TL;DR: In this paper, the authors focused on the magmatic origins and potential source regions of the Chang7 tuff intervals through detail depositional, petrographic and geochemical analyses, and the results indicated that these tuffs are enriched in K2O (average 4.21%), SiO2/Al2O3 ranges from 1.73 to 2.85 (average 2.17), and the ratio of TiO 2/Al 2O3 varies between 0.006 and 0.032 (average 0.017).

TL;DR: In this paper, six molybdenite samples from the Duobaoshan porphyry Cu-Mo-Au mine were selected for Re-Os isotope measurement to define the mineralization age of the mine.

TL;DR: In this article, an inventory of landslides triggered by the 2013 Minxian-Zhangxian earthquake is presented based on field investigations and visual interpretation of high-resolution satellite images.

TL;DR: Huangshaping granites in South China were investigated for their geochemical characteristics as mentioned in this paper, and three types of granites have been petrographically identified: quartz porphyry, granophyre, and granite porphyr.

TL;DR: The initiation timing and mechanism of lithospheric thinning of the North China Craton (NCC) was still controversial as discussed by the authors, and the initiation of the NCC thinning was still questionable.

TL;DR: The Jiru porphyry copper deposit in the Gangdese Porphyry Copper Belt (GPCB) is hosted by monzogranite and monzoglobalite porphyries with SHRIMP U-Pb ages of 48.6 and 16.4 Ma, respectively.

TL;DR: In this article, two large copper-gold porphyry deposits (No.I and No.II) were discovered in the last decade within the Xiongcun district, which is located along the south margin of the Gangdese Porphyry copper belt.

TL;DR: In this paper, the Late Triassic Xiao-Nuomuhong pluton is interpreted as the result of mixing between thickened lower crust-derived melts and lithospheric mantle-derived mafic melts and the protracted magmatic response to the break-off of the Paleo-Tethys oceanic slab at ∼232.

TL;DR: In this paper, the formation of mud diapirs and volcanoes in the study area are attributed to the overpressure in sedimentary layers, compressional tectonic forces and gas-bearing fluids.

TL;DR: In this article, a systematic study on the seasonal variation of major cations and anions was carried out to understand the source of dissolved ions as well as the geochemical weathering processes controlling the meltwater chemistry of Gangotri glacier.

TL;DR: In this article, the authors constructed an integrated magnetic anomaly map of Taiwan and its vicinity that combines land magnetic data and marine magnetic data using the reduction to pole (RTP) correction method.

TL;DR: In this paper, the authors focused on the representative Cenozoic basins of East China and its surrounding seas in the western Pacific domain to discuss the phenomenon of tectonic jumping in Cenozhocian basins, based on structural data from the Bohai Bay Basin, the South Yellow Sea Basin, and the East China Sea Shelf Basin.

TL;DR: In this article, the authors collected 38 water samples from the main channel and its main tributaries, spread between the upstream (above Lanzhou), midstream (from Lanzhou to Huayuankou) and downstream (from Huayanankou up to river mouth) segments of the Huanghe River.

TL;DR: The Yandong porphyry copper deposit, located in the Eastern Tianshan Mountains, Xinjiang, China, is part of the Central Asian Orogenic Belt as mentioned in this paper, and is hosted by a volcanic complex in the Early Carboniferous Qi’eshan Group and a felsic intrusion.

TL;DR: Based on the integrated analysis of high-resolution 2D/3D seismic data and well log data, the whole canyon could be divided into three segments from west to east through its distinct morphological and depositional architecture characteristics, the head area, the western segment and the eastern segment as mentioned in this paper.

TL;DR: In this article, the authors proposed a different model for the origin of the granites and related mineralization, based on petrological and geochemical studies on the Qianlishan composite plutons that host the supergiant Shizhuyuan W-Sn-Bi-Mo deposit.

TL;DR: In this paper, the authors demonstrate the co-existence of autobrecciation products such as slabby pahoehoe, rubbly phoehoe and a′a in scattered outcrops within the dominantly pheoehoe flow fields and show that these might have formed in individual lobes along marginal branches and terminal parts of compound flow fields.

TL;DR: Recently, a number of nanometric minerals have been identified as inclusions employing state-of-the-art analytical tools as mentioned in this paper, including diamonds in ultra-high-pressure (UH P ) minerals including diamond in felsic granulites of orogenic belts, in chromitites associated with ophiolitic complexes, and in mantle xenoliths.

TL;DR: In this paper, geochronological, whole-rock geochemical and zircon Hf-isotopic data for the early Paleozoic granitic rocks in the Jiamusi Massif in the eastern segment of the Central Asian Orogenic Belt (CAOB) was investigated.

TL;DR: In this article, a core section from Deep Sea Drilling Project Site 213 in the eastern Indian Ocean was reported to contain high concentrations of rare-earth elements and yttrium (REY) of possible economic significance.

TL;DR: In this article, the authors analyzed the petrological and geochemical characteristics of sandstones and mudstones from the Early Carboniferous Nanmingshui formation in Northeast Junggar and discussed the provenance and tectonic setting of these clastic rocks.

TL;DR: In this paper, major ion concentrations and stable isotopes of the dissolved loads of the Yalong River of the eastern Tibetan Plateau were analyzed to better understand chemical weathering and controlling processes.

TL;DR: In this article, the authors presented detailed geochemical and geochronological data of various types of magmatic rocks (including volcanic, cumulate and granitic rocks) widely exposed in the Zedong terrane to constrain the formation age and tectonic setting of the terrane.