Showing papers in "Gondwana Research in 2015"

TL;DR: The Jiangnan Orogen is considered as a continent-continent collisional belt resulting from the closure of a Meso-Neoproterozoic ocean separating the southeastern margin of the Yangtze Block from the northwestern boundary of the Cathaysia Block.

TL;DR: In this article, the authors present the petrology, geochemistry, zircon U-Pb geochronology and Lu-Hf isotopes of all the major lithologies from the Coorg block.

TL;DR: The chemical analysis of 23 sedimentary phosphate deposits (phosphorites) in the United States demonstrates that they are significantly enriched in rare earth elements (REEs) as mentioned in this paper.

TL;DR: In this paper, the authors classified the Triassic granitoids in the western Qinling Orogen into I-and S-types, with the former constituting the major variety.

TL;DR: In this article, a large quantity of geochronological, geochemical, thermochronology, sedimentological and palaeomagnetic data were collected over a trench (Pacific)-parallel distance of >1500 km (Colombia and Ecuador).

TL;DR: In this paper, 28 high-precision Chemical Abrasion Isotope Dilution Thermal Ionisation Mass Spectrometry U-Pb zircon dates for tuffs in the Sydney and Bowen Basins are reported.

TL;DR: In this article, the authors assimilate geological and geophysical evidence into a plate tectonic model for the India-Eurasia collision that includes continuously closing topological plate polygons, constructed from a time-dependent network of evolving plate boundaries, with synthetic plates constructed for now-subducted ocean floor, including back-arc basins that formed on the southern Eurasian margin.

TL;DR: The ChahJam-Biarjmand complex (CJBC) as mentioned in this paper contains granitic to tonalitic orthogneissic rocks (old plutons) and associated metasediments, amphibolites and paragneisses.

TL;DR: In this paper, a global geochemical dataset from one hundred-and-five greenstone sequences, ranging in age from the Eoarchean through the Archean and Proterozoic Eons, was examined to identify different ophiolite types (c.f. Zr) with distinct tectonic origins in the Precambrian rock record.

TL;DR: In this article, the granitic intrusions in the central part of the Jiamusi-Khanka Massif in the eastern segment of the Central Asian Orogenic Belt (CAOB) were investigated.

TL;DR: In this paper, geochemical, zircon U-Pb geochronology and Lu-Hf isotope data from a suite of magmatic rocks sampled from the region of confluence of two major Paleoproterozoic suture zones in the North China Craton (NCC) were presented.

TL;DR: In this article, the authors define three types of inheritance, namely structural, compositional and thermal inheritance and develop a simple and robust terminology able to describe and link observations made at different scales using geological, geophysical and modeling approaches.

TL;DR: In this article, the authors investigated the Ray-Iz massif of the early Paleozoic Voikar-Syninsk ophiolite belt in the Polar Urals (Russia) for a comparative study.

TL;DR: Based on basin evolution in the Central Asian Orogenic Belt (CAOB, Tarim Block, North China Block, and Qaidam-Qialian Block during the Late Jurassic-Early Cretaceous, the authors proposes that a short-lived but significant Mongol-Okhotsk collisional event occurred in the latest Jurassic-earliest Cretamous.

TL;DR: In this paper, the southern Great Xing'an Range is best described as a typical, late Mesozoic, intracontinental metallogenic belt related to magmatism with a significant mantle contribution.

TL;DR: Various combinations of zircon, quartz, corundum, K-feldspar, plagioclase, apatite, amphibole, rutile, titanite, almandine garnet, kyanite andalusite, and coesite have been recovered from podiform chromitites of the Luobusa and Dongqiao ophiolites.

TL;DR: A-type granitoids constitute volumetrically minor but genetically important building blocks of most post-Archean continental landmasses on Earth and their diversified genesis encapsulates key information for ascertaining critical geodynamic controls on continental crustal formation and differentiation as mentioned in this paper.

TL;DR: It is suggested that Avalonian ecosystems witnessed the appearance of novel nutrient sources, offering new opportunities and niches for benthic organisms, and cast doubt on previous suggestions that the Avalonian assemblages were largely composed of metazoans.

TL;DR: In this paper, the authors show that the Late Cretaceous tectonic evolution of Central America, NW South America and the Leeward Antilles is consistent with plume-induced SI (PISI) which nucleated along the southern and western margins of the Caribbean Plate (Caribbean Large Igneous Province).

TL;DR: Forsterite and pyroxene inclusions have Fo numbers of 97-98 and NiO contents of 1.11-1.22, respectively, in the Luobusa ophiolite.

TL;DR: A review of the current state of knowledge on the coquina play can be found in this paper, where the authors provide an integrated discussion of the state-of-the-art on the Coquina Play.

TL;DR: The study of subduction-related high-pressure and ultra-high-pressure metamorphic rocks exposed in orogenic belts is critical for unraveling the tectonothermal evolution of an orogen.

TL;DR: In this article, the authors proposed that the latest Jurassic to earliest Cretaceous granitoids and ores formed during a tearing of the subducting Izanagi slab, which caused the upwelling of asthenosphere and resulting mantle-crust interaction.

TL;DR: In this article, the Tombador Formation has been used to define the main sedimentary sources of the Archean, Paleoproterozoic and Mesoameric Eras, and the available zircon data defined three first-order intracratonic basinal cycles including the Lower (Statherian), Middle (Calymmian) and Upper (Stenian-early Tonian) Espinhaco basins.

TL;DR: In this paper, the authors proposed that the latest Permian convergent margin magmatism represented by the Xin'anzhai granitoid pluton (S-type leucogranite) is associated with the Indosinian Orogeny along the Ailaoshan suture zone.

TL;DR: The Heishan mafic-ultramafic complex in the Qimantag Mountains of the Eastern Kunlun Orogen, consists of olivine pyroxenites, pyroxensites, gabbros, and massive basalts.

TL;DR: In this paper, the authors report on two alkaline complexes and associated mineralisation in Namibia (Brandberg and Erongo) related to the opening of the South Atlantic and the Parana-Etendeka large igneous province.

TL;DR: In this article, a combined paleomagnetic and geochronologic study has been carried out on the Upper Cretaceous Jingzhushan Formation redbeds and the Lower Cretaged Dianzhong Formation volcanic rocks from the central Lhasa terrane to further constrain the India-Asia collisional process.

TL;DR: In this article, the authors used field-based structural analyses and geological mapping in five key ophiolite massifs (Luobusa, Zedang, Xigaze, Jiding and Dongbo) and petrofabric studies of core samples recovered through the Luobusa Scientific Drilling Project to document the structural architecture and the deformation history of the Indus-Tsangpo suture zone (ITSZ).

TL;DR: The osteology of Diamantinasaurus matildae, the most complete Cretaceous sauropod described from Australia to date, is comprehensively reassessed in this paper.