Showing papers in "Precambrian Research in 2014"

TL;DR: A set of global paleogeographic reconstructions for the 1770-1270 Ma time interval is presented in this article through a compilation of reliable paleomagnetic data and geological constraints.

TL;DR: Li et al. as mentioned in this paper carried out detailed studies on the geochemical compositions of Early Neoproterozoic crust across the Jiangnan orogen (JO) which connects the Yangtze and Cathaysia blocks on the northwestern margin of Rodinia.

TL;DR: In this paper, the Cadomian Orogen is inferred as a continental magmatic arc during the Neoproterozoic developed on a stretched Eoarchean to Hadean crust.

TL;DR: In this paper, the ages of two granitic gneisses from the Kongling Terrain in the Yangtze Craton, South China were determined by SIMS, LA-ICP-MS and LA-MC-ICP-MS.

TL;DR: In this article, the authors investigated the mafic-ultramafic suites and granitoids exposed in the Yuanbaoshan area along the western segment of the Jiangnan Orogen.

TL;DR: In this paper, a clockwise P-T path for high-pressure granulites from the Qianlishan Complex and medium-pressure pelitic granulite from other complexes in the Khondalite Belt is reconstructed based on the assemblage stability fields of PÞ pseudosection constructed in NCKFMASHTO.

TL;DR: In this paper, the authors present zircon cathodoluminescence images, U-Pb dates, and Lu-Hf isotope data for these rocks, in order to constrain the tectonic nature and evolution of the Jiao-Liao-Ji Belt.

TL;DR: In this article, the authors report new Fe-Mo-C-S geochemical data from black shale-rich strata of the early Cambrian continental margin Yangjiaping section in the Yangtze platform, South China.

TL;DR: In this article, a refined model of Rodinia is presented, with Baltica, Amazonia and West Africa attached to eastern Laurentia as in the SAMBA model, and East Antarctica, Australia and India to western Laurentia in a SWEAT configuration.

TL;DR: In this paper, a combined study of zircon U-Pb age, Hf-O isotope compositions, as well as whole rock element compositions was carried out for gray gneiss rocks from the Douling complex in the northwestern part of the Yangtze Craton.

TL;DR: In this paper, the parent magma of the meta-basalts was derived from 20% partial melting of spinel-garnet lherzolites that were previously metasomatized by subduction zone fluids/melts in the Late Archean.

TL;DR: In this paper, texturally controlled dating of zircon from Paleoarchean tonalite-trondhjemite-granodiorites of the Older Metamorphic Tonalitic Gneisses and the Singhbhum Granite batholith (Phases I, II, and III) reveals a polycyclic evolution of the Archean crust.

TL;DR: The North China Craton (NCC) is characterized by major ∼2.5 Ga tectono-thermal events and is thus different from many other cratons worldwide where ∼ 2.7 Ga events are well developed as mentioned in this paper.

TL;DR: In this paper, the Kuanping ophiolite melange between the North Qinling Terrain and the North China Block provides important constraints on the Meso-Neoproterozoic tectonic evolution of the Qinling Orogenic Belt.

TL;DR: In this paper, the Wenquan metamorphic complex (WMC) was investigated, which represents the basement and metamorphosed sedimentary cover of the northern Yili Block.

TL;DR: A global database of zircon ages from both granitoids and detrital sediments shows an exceptional and robust age gap between 2.45 and 2.20 Ga as mentioned in this paper.

TL;DR: In this article, the authors presented LA-CPMS U-Pb zircon and U-Th-pb monazite ages and geochemical data for felsic orthogneisses and granites from the Southern Granulite Terrane of India, a key area for reconstructing the evolution of the late Neoproterozoic Gondwana supercontinent.

TL;DR: The Kongling terrane is a high grade metamorphic complex, exposed in the northern part of the Yangtze Block, which mainly consists of TTG gneisses, amphibolites, migmatite, granite and diabase as discussed by the authors.

TL;DR: In this article, the SHRIMP U-Pb zircon analyses were obtained for nine samples of the Singhbhum Craton to investigate major regional granite intrusion, volcanism, sedimentary deposition, metamorphism and deformation episodes.

TL;DR: Based on temporal and spatial geochemical variations, the Yaolinghe Group can be divided into three volcanic cycles as discussed by the authors, and the most significant role in studying the tectono-magmatic evolution of the South Qinling.

TL;DR: In this article, the presence of a ∼85,000 km2 radiating dyke swarm with a fanning angle of 65° is confirmed within Peninsular India at 1.88°Ga.

TL;DR: In this article, several petrographical and geochemical criteria are proposed to recognize the pristine sedimentary origin of a chert, including microquartz, a 18O-rich bulk oxygen isotopic composition, the occurrence of large δ18O ranges at a micrometer scale, the variation of trace element compositions coupled with δ30Si, and the presence of large ranges of δ 30Si in pure micro-quartz. And these criteria should be regarded as guides to the identification of pristine diagenetic cherts in order to better constrain seaw

TL;DR: In this article, the authors demonstrate by means of SIMS U-Pb zircon dating that the Jiangkou glaciation in South China was initiated at 715.9 ± 2.8 Ma.

TL;DR: In this paper, the earliest Neoproterozoic granitic gneisses from the Wuyi-Yunkai domain gave zircon U-Pb ages of 985-913-Ma, indicating the presence of the early Neoproglobalite granitic magmatism in the Cathaysia interior.

TL;DR: In this paper, the age spectra of detrital zircons from sedimentary rocks may help resolve the tectonic affinity of the Alxa block and the North China Craton (NCC).

TL;DR: In this paper, the Tiradentes suite is represented by mafic andesites, dacites, granophyres and tonalites and shows petrographic features of volcanic rocks, such as spherulites, amygdales and porphyritic textures with plagioclase phenocrysts.

TL;DR: In this article, the authors integrate LA-ICP-MS U-Pb ages and Hf isotopic data for detrital zircons from Neoproterozoic successions in the Aksu area, NW Tarim.

TL;DR: In this article, the authors integrated zircon LA-ICP-MS U-Pb ages and Hf-isotope data from volcanic and sedimentary samples in the Kuruktag Group to constrain their deposition age and reveal the crustal evolution history of the Tarim Craton.

TL;DR: In this article, rare earth element (REE) analyses of ∼2800 million year old shallow-marine limestones and deep-water iron-rich sediments at Steep Rock Lake, Canada were performed.

TL;DR: In this paper, the formation and growth of continental crust in the Archean have been evaluated through models of subduction-accretion and mantle plume, and the authors showed that the Nilgiri block in southern India exposes exhumed Neoarchean lower crust, uplifted to heights of 2500 m above sea level along the north western margin of the Peninsula.