Showing 5,241 - 5,260 results of 5,525 for search '"Cretaceous"', query time: 0.21s Refine Results
  1. 5241

    Large igneous province activity drives oceanic anoxic event 2 environmental change across eastern Asia by R. Takashima, D. Selby, T. Yamanaka, Y. Kuwahara, H. Nakamura, K. Sawada, M. A. Ikeda, T. Ando, K. Hayashi, M. Nishida, T. Usami, D. Kameyama, H. Nishi, A. Kuroyanagi, B. R. Gyawali

    Published 2024-02-01
    “…Abstract During mid-Cretaceous Oceanic Anoxic Event 2, significant increase of atmospheric carbon dioxide concentrations from the eruption of the large igneous provinces is hypothesized to have induced a humid climate and an elevation in nutrient runoff from continents to the oceans, resulting in oxygen depletion in the ocean. …”
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  2. 5242

    Si decline and diatom evolution: Insights from physiological experiments by Alessandra Petrucciani, Andrew H. Knoll, Alessandra Norici, Alessandra Norici

    Published 2022-07-01
    “…Although molecular clocks suggest that diatoms arose as much as 250 million years ago (Ma), the earliest known diatom fossils date from 190 Ma, leading to the suggestion that early diatoms were at best lightly silicified. By the Cretaceous Period, large circular (in cross section) diatoms with highly silicified frustules thrived in surface oceans, only later to be joined by species with elongated and thinner frustules, as well as lower SiO2 content. …”
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  3. 5243

    Ca. 13 Ma strike-slip deformation in coastal Sonora from a large-scale, en-echelon, brittle-ductile, dextral shear indicator: implications for the evolution of the California rift by David García-Martínez, Molina Garza Molina Garza, Jaime Roldán Quintana, Héctor Mendívil-Quijada

    Published 2014-10-01
    “…The prevalent magnetization is southwest and moderately steep negative (ten sites), a discordant direction rotated clockwise about 41º±11 with respect to the expected Late Cretaceous reference direction, also indicating gentle southward tilt. …”
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  4. 5244

    Discovering a Project for the Development of Geotourism in Rural Areas: The Paleontological and Archaeological Interpretation Centre of Tamajón (CIPAT, Guadalajara, Spain) by Fernando Barroso-Barcenilla, María del Rosario Alcalde-Fuentes, Julia Audije-Gil, Mélani Berrocal-Casero, Pedro Miguel Callapez, Senay Ozkaya de Juanas, Juan Alberto Pérez-Valera, Vanda Faria dos Santos, Manuel Segura

    Published 2022-03-01
    “…The Paleontological Area allows visitors to explore, through fossils, replicas, models (real and virtual) and dioramas, the diversity of coastal and marine life that inhabited the region during the Late Cretaceous Age. Moreover, the area highlights crocodylomorphs, dinosaurs and fishes (identified through their fossilized tracks), and the remains of plants and invertebrates. …”
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  5. 5245

    Tectonic control on the stratigraphic framework of Late Pleistocene and Holocene deposits in Marajó Island, State of Pará, eastern Amazonia by Dilce F. Rossetti

    Published 2010-06-01
    “…The traditional view that the Brazilian Amazonia is located in a tectonically stable area since the Cretaceous is changing in front of the increasing documentation of fault reactivations even during the Holocene. …”
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  6. 5246

    Activity characteristics of Langshan Branch Fault in Jartai Structural Belt, Hetao Basin and its control on hydrocarbon accumulation by Binying Liu, Hongwei Zhang, Fang Wang, Peng Wang, Zenghu Guo, Dongmin Liu, Lei Wang, Zhaofei Wan

    Published 2023-03-01
    “…In the depositional stage of the Lisangou Formation in the Early Cretaceous, the sectionalized thrusting existed and the north section and the middle section of the fault were flexibly connected. …”
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  7. 5247

    Disentangling Sedimentary Pathways for the Pleniglacial Lower Danube Loess Based on Geochemical Signatures by Stephan Pötter, Daniel Veres, Daniel Veres, Yunus Baykal, Janina J. Nett, Philipp Schulte, Ulrich Hambach, Frank Lehmkuhl

    Published 2021-04-01
    “…Based on published literature, we thus evaluate five plausible sedimentary pathways for the LDB loess: 1) the Danube alluvium (DA) pathway, which constrains the transport and re-deposition of detrital material by the Danube and its tributaries; 2) the Carpathian Bending (CB) pathway, where sediment is mainly transported from the Cretaceous to Neogene flysch of the Eastern Carpathian Bending; 3) the Eastern Carpathian (EC) pathway, in which sediment is eroded from the flysch of the Outer Eastern Carpathians, transported by rivers, and deflated by northwesterly to westerly winds; 4) the glaciofluvial (GF) pathway, where dust is deflated from glacial outwash plains in nowadays Ukraine, and 5) the Black Sea (BS) pathway, where dust originates from the exposed shelf of the Black Sea. …”
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  8. 5248

    Zircon U-Pb Dating and Petrogenesis of Multiple Episodes of Anatexis in the North Dabie Complex Zone, Central China by Yang Yang, Yi-Can Liu, Yang Li, Chiara Groppo, Franco Rolfo

    Published 2020-07-01
    “…However, all the leucosomes and melanosomes display Pb-isotopic compositions similar to those observed for the NDZ UHP rocks (eclogites and granitic gneisses), suggesting a common source from the Triassic subducted Neoproterozoic lower-crustal rocks. In addition, the Cretaceous partial melting and migmatization began at 143 ± 2 Ma with three age-peaks at 133 ± 3 Ma, 124 ± 3 Ma and 114 ± 7 Ma, respectively.…”
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  9. 5249

    Die mesophytische Flora der Saurierlagerstätte am Tendaguru (Tansania) Erste Ergebnisse by E. Kahlert, S. Schultka, H. Süß

    Published 1999-01-01
    “…Preliminary observations support the opinion that further field work must be carried out if we would like to obtain a clearer „picture” of the Jurassic-Cretaceous flora that formed the diet of herbivorous dinosaurs. …”
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  10. 5250

    Reconstruction of the Diagenetic Environments of Tight Sandstone Reservoirs: A Case Study from the Tengger Formation in the Baiyinchagan Sag, Erlian Basin, Northern China by Shengyu Li, Jingchun Tian, Xiaobing Lin, Nanxin Yin, Chao Luo, Dongdong Yang

    Published 2022-09-01
    “… AbstractThe Lower Cretaceous Tengger Formation located in the Baiyinchagan Sag of the Erlian Basin comprises mainly deeply buried tight sandstone. …”
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  11. 5251

    Stronger selective constraints on the mitochondrial genome in flying fishes by Zufa Ding, Zufa Ding, Youwei Xu, Wenjun Chen, Wenjun Chen, Yang Liu, Yang Liu, Cheng Wang, Cheng Wang, Yuhan Niu, Kui Zhang, Ying Wang, Liandong Yang

    Published 2023-05-01
    “…The divergence time analysis showed that the split between the suborder Belonidei and the family Adrianichthyidae occurred roughly 77.08 Mya, which fell within the period of evolution of the Indian plate in the late Cretaceous. Selection analyses revealed that flying fishes have a lower dN/dS ratio than the other members of Beloniformes, indicating that flying fishes experienced stronger purifying selection to eliminate deleterious mutations to maintain efficient energy metabolism to adapt to flight behavior. …”
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  12. 5252

    Formation and evolution stages of gold rich Barika massive sulfide deposit, east of Sardasht, northern Sanandaj-Sirjan zone: based on structural, textural and fluid inclusion studi... by Hossein Ali Tajeddin, Ebrahim Rastad, Abdolmajid Yaghoubpour, Mohammad Mohajjel

    Published 2010-08-01
    “…Rock units outcropped in this area are Cretaceous metamorphosed volcano-sedimentary rocks in green schist facies, and include association of meta-andesite, meta-tuffite, phyllite and slate rocks, where the meta-andesitic unit (Kmv1) is host rock to the deposit. …”
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  13. 5253

    Geochronological and Geochemical Constraints on the Petrogenesis of Lamprophyre from the Giant Weishan REE Deposit in China by Yi-Zhan Sun, Kun-Feng Qiu, Mao-Guo An, Shan-Shan Li, Zhen Shang, Yu Wang

    Published 2022-05-01
    “…We propose that the mafic dike intrusions are consistent with an Early Cretaceous alkaline magma emplacement in an extensional setting, in which the magma was not contaminated by crustal material during its emplacement.…”
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  14. 5254

    Polyphase Exhumation of the East Kunlun Orogenic Belt: Evidence from Modern River Detrital Zircon and Apatite Fission Track Dating by Yuxiong Ma, Zhao Yang, Dengfeng He, Xiaohui Shi, Bo Zhou, Jiali You, Dali Ju, Yunpeng Dong

    Published 2024-01-01
    “…The youngest peak age at 25.1–18.3 Ma matches well with the extensive outward and upward growth of the Tibetan Plateau during the Oligocene to Miocene time. The Cretaceous and early Cenozoic rapid exhumations suggest that the E-KOB has been involved in the intracontinental deformation induced by collisions of the Lhasa-Qiangtang and India-Asia from the south. …”
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  15. 5255

    Quantitative Analysis of Morphometric Data of Pre-modern Birds: Phylogenetic Versus Ecological Signal by Alyssa Bell, Alyssa Bell, Jesús Marugán-Lobón, Jesús Marugán-Lobón, Guillermo Navalón, Guillermo Navalón, Sergio M. Nebreda, John DiGuildo, Luis M. Chiappe

    Published 2021-07-01
    “…Furthermore, we found differential scaling of leg bones among Early Cretaceous enantiornithines and ornithuromorphs, a result hinting that habitat partitioning among different lineages could be a pervasive phenomenon in avian evolution.…”
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  16. 5256

    LA–ICP–MS U–Pb Dating, Elemental Mapping and In Situ Trace Element Analyses of Cassiterites from the Gejiu Tin Polymetallic Deposit, SW China: Constraints on the Timing of Minerali... by Xiaohu He, Congfa Bao, Yongyan Lu, Nicole Leonard, Zheng Liu, Shucheng Tan

    Published 2022-02-01
    “…Such age coincidence, combined with the spatial association, suggests that tin mineralization may be genetically related to the Late Cretaceous granitic magmatism. Multielemental mapping shows that the distribution of Nb, Ta, and Ti in the cassiterite grains correlates well with the regular oscillatory zoning patterns in cathodoluminescence (CL) images. …”
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  17. 5257

    Is the Hubble Crisis Connected with the Extinction of Dinosaurs? by Leandros Perivolaropoulos

    Published 2022-04-01
    “…This increase may also be connected with the Chicxulub impactor event that produced the Cretaceous–Tertiary (K-T) extinction of 75% of life on Earth (including dinosaurs) about 66 Myrs ago. …”
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  18. 5258

    Kinematics of the South Atlantic rift by C. Heine, J. Zoethout, R. D. Müller

    Published 2013-08-01
    “…The South Atlantic rift basin evolved as a branch of a large Jurassic–Cretaceous intraplate rift zone between the African and South American plates during the final break-up of western Gondwana. …”
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  19. 5259

    Fracturing timing of Jurassic reservoirs in the Dibei-Tuziluoke gas field, Kuqa foreland basin: Evidence from petrography, fluid inclusions, and clumped isotopes by Guoding Yu, Wenfang Yuan, Kelai Xi, Yin Liu, Shuai Wang, Zhenping Xu, Jing Yuan, Lu Zhou, Keyu Liu

    Published 2024-04-01
    “…Bitumen-filled fractures likely resulted from the Late Cretaceous uplift, marking the migration of low-maturity hydrocarbons in the study area. …”
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  20. 5260

    Birds and hard ticks (Acari: Ixodidae), with discussions about hypotheses on tick evolution by GUGLIELMONE AA, NAVA S

    Published 2017-06-01
    “…The Australasian Ixodes + I. uriae clade probably originated at an uncertain time from the late Triassic to the early Cretaceous. It is speculated that Prostriata first hosts were Gondwanan theropod dinosaurs in an undetermined place before Pangaea break up; alternatively, if ancestral monotromes were involved in its evolution an Australasian origin of Prostriata seems plausible. …”
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