Showing 1,121 - 1,140 results of 1,318 for search 'Jurassic 5', query time: 0.11s Refine Results
  1. 1121
  2. 1122
  3. 1123
  4. 1124
  5. 1125
  6. 1126
  7. 1127

    Spectral properties of carbonatized ultramafic mantle xenoliths and their host olivine basalts, Jabal Al Maqtal basin, South Eastern Desert, Egypt, using ASD FieldSpec spectroradio... by Ahmed A. Madani

    Published 2011-06-01
    “…Field data revealed the presence of ultramafic mantle xenoliths at different stratigraphic levels within Jurassic olivine basalts. Ultramafic mantle xenoliths are recorded within highly altered olivine basalt topped by hard, compact brown conglomerate (erosional surface) of 1.5 m thick. …”
    Get full text
    Article
  8. 1128

    Geology, fluid inclusions, mineral and (S-O) isotope chemistry of the Badran orogenic Au deposit, Yana-Kolyma belt, eastern Siberia: implications for ore genesis by Valery Fridovsky, Sergey Kryazhev, Sergey Kryazhev, Lena Polufuntikova, Maxim Kudrin, Galina Anisimova

    Published 2024-02-01
    “…The δ34S values of pyrite and arsenopyrite vary from −1.1‰ to +2.4‰, with an average of +0.4‰; the δ18О of quartz from +15.1‰ to +17.5‰ at constant δ18ОH2O about +7.5‰ (±1.0‰). High contents of As (up to 2.4 wt%) and Co/Ni ∼ from 0.3 to 9.9 in pyrite of proximal alteration are typical for hydrothermal systems. …”
    Get full text
    Article
  9. 1129
  10. 1130
  11. 1131

    Depositional Sedimentary Facies, Stratigraphic Control, Paleoecological Constraints, and Paleogeographic Reconstruction of Late Permian Chhidru Formation (Western Salt Range, Pakis... by Syed Kamran Ali, Hammad Tariq Janjuhah, Syed Muzyan Shahzad, George Kontakiotis, Muhammad Hussain Saleem, Usman Khan, Stergios D. Zarkogiannis, Panayota Makri, Assimina Antonarakou

    Published 2021-12-01
    “…The sedimentary rocks found in this Gorge, belonging to the Chhidru Formation, were studied in terms of sedimentology and stratigraphy, and provide new insights into the basin paleogeographic evolution from the Precambrian to the Jurassic period. Facies analysis in the Chhidru Formation deposits allowed the recognition of three lithofacies (the limestone facies—CF1, the limestone with clay interbeds facies—CF2, and the sandy limestone facies—CF3) with five microfacies types (mudstone biomicrite—MF-1, wackestone-biomicrite—MF-2, wackestone-biosparite—MF-3, pack-stone-biomicrite—MF-4, and packstone-biosparite—MF-5), as well as their depositional characteristics. …”
    Get full text
    Article
  12. 1132
  13. 1133

    Petrogeochemical Characteristics and Metallogenetic Potential of Epimetamorphic Rocks in South Jiangxi Province by WANG Zhen, ZHAO Zhi, ZOU Xin-yong, CHEN Zhen-yu, TU Xue-jing

    Published 2018-01-01
    “…Minor epimetamorphic rocks also occur in Jurassic strata. Neoproterozoic epimetamorphic rocks are most widespread and mainly include blastopsammite, metamorphic tuff, slate, phyllite, and schist. …”
    Get full text
    Article
  14. 1134
  15. 1135

    Recycling of crustal materials and implications for lithospheric thinning: Evidence from Mesozoic volcanic rocks in the Hailar–Tamtsag Basin, NE China by Zheng Ji, Yan-Long Zhang, Chuan-Biao Wan, Wen-Chun Ge, Hao Yang, Yu Dong, Yan Jing

    Published 2021-09-01
    “…Late Mesozoic Nb-rich basaltic andesites and high-Mg adakitic volcanic rocks from the Hailar–Tamtsag Basin, northeast China, provide important insights into the recycling processes of crustal materials and their role in late Mesozoic lithospheric thinning. The Late Jurassic Nb-rich basaltic andesites (154 ± 4 Ma) are enriched in large-ion lithophile and light rare earth elements, slightly depleted in high-field-strength elements, and have high TiO2, P2O5, and Nb contents, and (Nb/Th)PM and Nb/U ratios, which together with the relatively depleted Sr–Nd–Hf isotopic compositions indicate a derivation from a mantle wedge metasomatized by hydrous melts from subducted oceanic crust. …”
    Get full text
    Article
  16. 1136

    The migration rule of the ore-forming fluids in the Meso-Cenozoic Basins, Southwestern Tianshan, China by JIA Runxing, FANG Weixuan

    Published 2021-08-01
    “…The Wulagen pb-zn deposit occurred in the coarse sandy fine conglomerates in the Section 5 of the Lower Cretaceous Kizilsu group(K1kz5) and have underwent weak tectonic reworking in the late period; The Sareke copper deposit occurred in anagenites in the upper section of Upper Jurassic Kuzigongsu formation (J3k2), and the northern part shows obvious tectonic reworking and enrichment mineralization, while the southern part shows discoloration and superposition mineralization after magmatic hydrothermal alteration. …”
    Get full text
    Article
  17. 1137

    A new body mass estimation of Brachiosaurus brancai Janensch, 1914 mounted and exhibited at the Museum of Natural History (Berlin, Germany) by H.-C. Gunga, T. Suthau, A. Bellmann, S. Stoinski, A. Friedrich, T. Trippel, K. Kirsch, O. Hellwich

    Published 2008-02-01
    “…The total body surface area was calculated to be 119.1 m2, specifically 1.5 m2 for the head, 26 m2 neck, fore limbs 18.8 m2, hind limbs 16.4 m2, 44.2 m2 thoracic-abdominal cavity, and finally the tail 12.2 m2. …”
    Get full text
    Article
  18. 1138

    Characteristics of thermophysical parameters in the Wugongshan area of South China and their insights for geothermal genesis by Kai Liu, Kai Liu, Yaoyao Zhang, Qingcheng He, Shouchuan Zhang, Wuhui Jia, Xiaolong He, Haoran Zhang, Luyao Wang, Shuxun Wang

    Published 2023-04-01
    “…The results show that the average radioheat generation rate, the average thermal conductivity, and the average specific heat are 0.24–5.49 (μW/m3), 1.995–4.390 (W/mK), and 1.318–4.829 (MJ/m3K), respectively. …”
    Get full text
    Article
  19. 1139
  20. 1140