The Susong metamorphic complex (SSC) in the southern margin of Dabie orogenic belt (DOB) central-eastern China is a key unit for understanding subduction and exhumation processes DOB. However, formation age grade SSC remain uncertain, hampering our mechanism An integrated study field survey, regional petrology, geothermobarometry, U–Pb dating zircon was carried out this study. Our results revea...

a r t i c l e i n f o The Early–Middle Cambrian Pioche Shale of Lincoln County, Nevada preserves a diverse array of soft-bodied ecdysozoans that are well-known from the Burgess Shale soft-bodied fauna of British Columbia, Canada. At Pioche certain genera occur both above and below the Middle Cambrian boundary, allowing a comparison of the nature of their preservation across this interval. In or...

. Figure 1. Cambrian lobopodian diversity. (A) Aysheaia pedunculata, middle Cambrian Burgess Shale (NMNH-83942). (B) Claws of Aysheaia pedunculata (NMNH-365608). (C) Hallucigenia sparsa, middle Cambrian Burgess Shale (NMNH198658; courtesy of M. Smith, University of Cambridge. Nature 523, 75–78). (D) Microdictyon sinicum, early Cambrian Chengjiang (ELRC-30060; courtesy of G. Edgecombe, Natural H...

An exotic block of garnet-bearing schist has been found at the boundary between Early Triassic Takinosawa Unit Nedamo Belt and Jurassic Nakatsugawa Complex North Kitakami Belt, NE Japan. This is only second discovery schists in Belt; previously identified occur early Carboniferous Tsunatori units Belt. The characterized by a mineral assemblage garnet + phengite epidote albite quartz titanite. P...

In orogenic belts, a basal décollement zone often develops at depth to accommodate the shortening due to folding and thrusting of the sedimentary cover. In the Early Mesozoic intracontinental Xuefengshan Belt of South China, such a décollement zone is exposed in the core of anticlines formed by the emplacement of the late-orogenic granitic plutons. The detailed, multi-scale structural analysis ...

Relevance. When mapping the vast areas of Precambrian polymetamorphic complexes in North Yenisei Ridge, there is a problem metamorphism interpretation and phasing geological development particular area along with thrust tectonics. The solution these issues also great importance for purposes delineation metamorphic rocks that are favorable detection high-alumina (andalusite, kyanite, sillimanite...

Regional tectonic synthesis suggests that a segment of the bipartite eastern Gondwana-type Carpathian-Balkan nappe-stacked Getic/Kučaj/Supragetic basement (eastern Serbia) experienced Cambro-Ordovician Cenerian (Sardic) accretionary-type deformation. The Ordovician Alpine Getic/Kučaj nappe exposes an earlier-mapped shallow-marine transgressive-type Fe-silicate-rich ironstone sequence. is used a...

The Blue Nile Basin, situated in the Northwestern Ethiopian Plateau, contains 1400 m thick Mesozoic sedimentary section underlain by Neoproterozoic basement rocks and overlain by Early–Late Oligocene and Quaternary volcanic rocks. This study outlines the stratigraphic and structural evolution of the Blue Nile Basin based on field and remote sensing studies along the Gorge of the Nile. The Blue ...

■ Abstract The Cordilleran orogen of western North America is a segment of the Circum-Pacific orogenic belt where subduction of oceanic lithosphere has been underway along a great circle of the globe since breakup of the supercontinent Pangea began in Triassic time. Early stages of Cordilleran evolution involved Neoproterozoic rifting of the supercontinent Rodinia to trigger miogeoclinal sedime...