A5089503261- Paleontology and Stratigraphy of Fossils
- Geology and Paleoclimatology Research
- Geological and Geochemical Analysis
- Geological and Geophysical Studies
- Hydrocarbon exploration and reservoir analysis
- Evolution and Paleontology Studies
- Geochemistry and Elemental Analysis
- Paleontology and Evolutionary Biology
- Geological formations and processes
- Geological Studies and Exploration
- earthquake and tectonic studies
- Metallurgy and Material Forming
- Metal Forming Simulation Techniques
- Plant Diversity and Evolution
- Ichthyology and Marine Biology
- Fossil Insects in Amber
- Advanced Surface Polishing Techniques
- Geochemistry and Geologic Mapping
- Spectroscopy and Quantum Chemical Studies
- Chemical and Physical Properties in Aqueous Solutions
- Orthoptera Research and Taxonomy
- Mollusks and Parasites Studies
- Geological Formations and Processes Exploration
- Thermodynamic properties of mixtures
- International Environmental Law and Policies
Nanjing Institute of Geology and Paleontology
2016-2025
Minzu University of China
2024
Yangtze University
2024
Chinese Academy of Sciences
1985-2023
Columbia University
2019-2023
Lamont-Doherty Earth Observatory
2019-2023
State Key Laboratory of Palaeobiology and Stratigraphy
2020-2022
Institute for History of Natural Sciences
2018
Peking University
2014-2016
Shanghai Jiao Tong University
2014-2015
Single point incremental forming (SPIF) is a highly versatile and flexible process for rapid manufacturing of complex sheet metal parts. In the SPIF process, ball nose tool moves along predefined path to form desired shapes. Due its unique ability in local deformation metal, friction condition between plays significant role material deformation. The effects on surface finish, load, formability are studied using newly developed oblique roller (ORB) tool. Four grades aluminum including AA1100,...
Abundant lake ice-rafted debris in Late Triassic and earliest Jurassic strata of the Junggar Basin northwestern China (paleolatitude ~71°N) indicates that freezing winter temperatures typified forested Arctic, despite a persistence extremely high levels atmospheric P co 2 (partial pressure CO ). Phylogenetic bracket analysis shows non-avian dinosaurs were primitively insulated, enabling them to access rich deciduous evergreen Arctic vegetation, even under conditions. Transient but intense...
Abstract The end-Permian mass extinction (EPME; ca. 252 Ma) led to profound changes in lacustrine ecosystems. However, whether or not post-extinction recovery of ecosystems was delayed has remained uncertain, due the apparent rarity Early and Middle Triassic deep perennial lakes. Here we report on mid–Middle organic-rich shales with abundant fossils tuff interlayers Ordos Basin China, dated 242 Ma (around Anisian-Ladinian boundary Triassic). sediments record earliest known appearance, after...
Collective cognition is often mentioned as one of the advantages group living. But which factors actually facilitate smarts? To answer this, we compared how individuals and groups either ants or people tackle an identical ...Biological ensembles use collective intelligence to challenges together, but suboptimal coordination can undermine effectiveness cognition. Testing whether exceeds that individual impractical since ...
Paleotropical lacustrine strata of eastern North America are only known place where vertebrate and floral records the end-Triassic extinction (ETE) (1) directly interbedded with U-Pb zircon CA-TIMS-dated lavas CAMP (2) a high-resolution, orbitally paced, cyclostratigraphy (3, 4). New, continuous XRF elemental scans Newark Hartford rift basin cores (5) confirm previous work in showing expected climatic-precession-dominance modulated by eccentricity for most section (6, 7), but an emerging...
Over the past decades, abundant and well-preserved vertebrate fossils, known as Urho Pterosaur Fauna, have been recovered from Lower Cretaceous Tugulu Group in Junggar Basin, Xinjiang, NW China. Excavated materials belong to pterosaur, plesiosaur, dinosaur, crocodylomorph, turtle taxa. As such, they provide key insights into evolutionary history of several critical groups Early Cretaceous. The assemblages interpreted belonging Jehol Biota sensu lato, representing its northwesternmost...
Northeast China's Early Cretaceous Yixian Formation preserves spectacular fossils that have proved extraordinarily important in testing evolutionary hypotheses involving the origin of birds and distribution feathers among nonavian dinosaurs. These occur either flattened with soft tissue preservation (including color) laminated lacustrine strata or as three-dimensional (3D) skeletons "life-like" postures more massive deposits. The relationships these deposits to each other, their absolute...
Abstract The timing and ecological impacts of the Deccan Traps large igneous province eruption are vigorously debated. Pre–Cretaceous-Paleogene (KPg) boundary volcanism have been widely identified in marine sediments, but direct evidence terrestrial remains rare. We used mercury concentrations isotopic compositions, a proxy for volcanic activity, to assess on environments. studied two drill cores across KPg eastern China that represent different depositional environments: clastic deposits...
Abstract The vast, widely exposed terrestrial (lacustrine to fluvial) Upper Triassic–Jurassic (except Tithonian) successions of the Junggar Basin not only record most stratigraphic boundaries Triassic and Jurassic, including boundary Hettangian–Sinemurian, Sinemurian–Pliensbachian, Pliensbachian–Toarcian, Lower–Middle Middle–Upper Jurassic Oxfordian–Kimmeridgian boundaries, but also a range geological, organic, palaeogeographic palaeoclimatic events known have happened globally in Late...
Abstract Vertebrate assemblages from the Junggar Basin in Xinjiang, China, are only ones known palaeo-Arctic continental strata of Late Triassic and Early Jurassic age. Here we present a preliminary description these new assemblages, focusing on underappreciated Arctic palaeolatitude winter freezing this coal-bearing sequence. Mostly collected during NIGPAS-led stratigraphic studies 2016–17 field seasons, include: (1) small to large sculptured palaeonisciform cranial elements scales,...
Abstract Mesozoic continental basins of northern China, including the Junggar Basin, provide some most spectacular and important fossil assemblages in world, but their climatic environmental contexts have been shrouded uncertainty. Here we examine main factors that determine those contexts: palaeolatitude; effects changing atmospheric gases on radiative balance; orbitally paced variations insolation. Empirical evidence these is accumulating rapidly promises to upend many long-standing...