Showing 5,481 - 5,500 results of 5,525 for search '"Cretaceous"', query time: 0.53s Refine Results
  1. 5481

    Investigation of petrography, mineralogy and alteration of northern part of the Chahfiruzeh porphyry copper deposit, northwest of Shar-e-Babak, Kerman by Mohammad Boomeri, Habib Biabangard, Zahra Zeinadini

    Published 2019-06-01
    “…Geology Geology of the northern part of the Chahfiruzeh area consists of upper Cretaceous-Eocene andesitic lava, pyroclastic and volcanoclastic rocks that have been intruded by Oligo-Miocene intermediate stocks and dikes (Dimitrijevic, 1973). …”
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  2. 5482

    Geology, petrography, mineral chemistry and fluids inclusion of the Kalate Shab iron skarn (East of Sarbisheh, Southern Khorasan) by Fatemeh Yari, Mohammad Hossein Zarrinkoub, Seyyed Saeid Mohammadi

    Published 2021-02-01
    “…The Sistan suture zone represents a deformed accretionary prism that was emplaced during the destruction of a small Neotethyan ocean basin, referred to as the Sistan Ocean, which once separated the Lut and Afghan continental blocks from each other (Tirrul et al., 1983). Late Cretaceous adakitic granodiorites and Early Eocene A-type granites have been emplaced in the suture (Zarrinkoub et al., 2012). …”
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  3. 5483

    Petrology of Oligocene Ghaleh Yaghmesh granitoids in the west of Yazd province by Bahareh Fazeli, Mahmoud Khalili, Roy Beavers, Mahin Mansouri Esfahani, Zahra Loghmani Dastjerdi

    Published 2017-02-01
    “…The belt is response to subduction of Neo-Tethyan oceanic crust beneath central Iran (Alavi, 1994). During Cretaceous-Late Tertiary, numerous granitoid bodies were exposed in this belt, many of which have been studied by a number of workers (e.g. …”
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  4. 5484

    Mineralization and trace element distribution in pyrite using EMPA in exploration drill holes from Cheshmeh Zard gold district, Khorasan Razavi Province, Iran by Zahra Alaminia, Mohammad Hassan Karimpour, eyed Massoud Homam

    Published 2015-10-01
    “…This includes the Arghash diorite pluton, upper Cretaceous granitoids (minor diorite, mainly quartz monzodiorite and granodiorite), early Eocene granite and several lamprophyre and small intrusions of quartz monzodiorite porphyries. …”
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  5. 5485

    Geology, Geochemistry and Ground Magnetic Survey on Kalateh Naser Iron Ore Deposit, Khorasan Jonoubi Province by Saeed Saadat

    Published 2017-02-01
    “…Results The most significant rock units in the area are cretaceous carbonate rocks (Fig. 3). The unit turns to shale and thin bedded limestone in the central part and into red and white crystalline limestone towards the west, which sometimes can be referred as marble and skarn (Figs. 4, 5 and 6; Saadat, 2014). …”
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  6. 5486

    Petrology, geochemistry and tectonic setting studies in magmatic complex generating the Takht Fe-skarn deposit, NE Hamedan by Seyed Nematollah Haghighi Bardineh, Reza Zarei Sahamieh, Hassan Zamanian, Ahmad Ahmadi Khalaji

    Published 2019-06-01
    “…These bodies are mostly intruded in Jurassic schists and are in contact with Cretaceous limestone leading to the formation of a skarn iron-ore deposit. …”
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  7. 5487

    Corona formation around monazite and xenotime during greenschist-facies metamorphism and deformation by F. Hentschel, E. Janots, C. A. Trepmann, V. Magnin, P. Lanari

    Published 2020-10-01
    “…The corona microstructure documents replacement reactions of a single reactant into multiple distinct mineral growth zones by dissolution and precipitation processes at non-isostatic, greenschist-facies conditions, which prevailed in the area to the north of the Defereggen–Antholz–Vals shear zone between the middle Cretaceous and the Oligocene. These reactions ceased before being completed, and REE gradients within single grains within the corona and on the thin-section scale are preserved, which suggests restricted and/or episodic transport of REE in the fluid phase and/or availability of fluid.…”
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  8. 5488

    Investigation of Organic Matters and their Roles in Deposition and Phosphate Mineralization in the Kuh-e-Sefid Deposit, Ramhormoz by Houshang Pourkaseb, Alireza Zarasvandi, Zahra Fereydouni, Babak Mokhtari, Neda Mirzaei

    Published 2017-07-01
    “…Sedimentology, geochemistry and origin of phosphate chalks. The upper cretaceous deposits of NW Europe. Sedimentology, 39(1):55-97. …”
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  9. 5489

    Pierre et carrières dans la Saintonge antique : identification, usages et diffusion by Jacques Gaillard, Egle Conforto

    Published 2023-03-01
    “…Sedimentary formations ranging from the Jurassic to the Cretaceous are the ones most frequently found along lengthy stretches on either side of the Saintonge anticline axis. …”
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  10. 5490

    Suspended sediment load modeling by machine learning algorithms in low and high discharge periods (Case study: Kashkan watershed) by Nasrin Beiranvand, Alireza Sepahvand, Ali Haghizadeh

    Published 2023-06-01
    “…The surface lithology in the KhorramAbad, Alashtar and Biranshahr watersheds are covered by the Eocene, Quaternary, Cretaceous, Miocene, Oligocene, Paleocene, and Pliocene geologic formations.Predicting suspended sediment load (SSL) in water resource management requires efficient and reliable predicted models. …”
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  11. 5491

    BASEMENT CONFIGURATION OF THE NORTHWESTERN SOUTH AMERICA - CARIBBEAN MARGIN FROM RECENT GEOPHYSICAL DATA Configuración del basamento de la margen Sur America noroccidental - el Car... by John F. Cerón, James N. Kellogg, Germán Y. Ojeda

    Published 2007-12-01
    “…The oceanic nature of the crust in northern Colombia (underlying the Lower Magdalena Basins) has been postulated by different authors as a northern extension of the Cretaceous, mafic and ultramafic rocks accreted to the western margin of northwest Colombia (in the Western Cordillera and Baudo range). …”
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  12. 5492

    An evaluation of Deccan Traps eruption rates using geochronologic data by B. Schoene, M. P. Eddy, C. B. Keller, K. M. Samperton

    Published 2021-04-01
    “…These datasets can be analyzed in finer detail to determine eruption rates, which are critical for connecting volcanism, associated volatile emissions, and any potential effects on the Earth's climate before and after the Cretaceous–Paleogene boundary (KPB). It is our observation that the community has frequently misinterpreted how the eruption rates derived from these two datasets vary across the KPB. …”
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  13. 5493

    Investigation of Regional Fractures and Cu Mineralization Relationships in the Khezrabad and Shahr-e-Babak Area: Using Fry and Fractal analysis by Alireza Zarasvandi, Babak Samani, Houshang Pourkaseb, Zahra Khorsandi, Yaghoub Jalili

    Published 2015-10-01
    “…<br> - The results of Fry analysis show that the mineralization in the Khezr-Abad occurred in the Cretaceous (and younger) rocks with NE/SW and NW/SE orientations. …”
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  14. 5494

    Sedimentary Basins of the Republic of Yemen : Their Structural Evolution and Geological Characteristics Evolution structurelle et caractéristiques géologiques des bassins sédimenta... by Beydoun Z. R., As-Saruri M. L., Baraba R. S.

    Published 2006-11-01
    “…All the tectonic activity is linked to Gondwanan fragmentation and breakup from the initial closure of the paleo-Tethys and opening of the neo-Tethys in late Carboniferous to Permian times, and the development of the African Karoo system, through separation of India from Afro-Arabia in the Cretaceous to ultimate separation of Arabia from Africa in the Neogene. …”
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  15. 5495

    Petrology and geochemistry of high temperature I type granitoids in Nusha region, Mazandaran province by Farbood Hakimi Bandboon, Saeed Taki, Mohamad Modarresnia

    Published 2022-12-01
    “…Exposed rock units in the study area, in addition to intrusive igneous rocks, include sedimentary carbonate and detrital rocks belonging to the Mobarak (Carboniferous), Dorood (Lower Permian), Ruteh (Upper Permian), Nesen (Upper Permian), Elika (Lower-Middle Triassic), Shemshak (Upper Triassic-Lower Jurassic) Formations and Cretaceous sedimentary and volcanic rocks. In this area, the granitoid intrusive masses have northwest-southeast trends and have intruded during the Eocene (56±2 million years ago) (Axen et al., 2001). …”
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  16. 5496

    Alteration, mineralization, geochemistry and fluid inclusion study of the Firouzeh mine, NW Neyshabour by Alireza Ghiasvand, Mohammad Hassan Karimpour, Azadeh Malekzadeh Shafaroudi, Mohammad Reza Haidarian Shahri

    Published 2019-06-01
    “…La Candelaria and the Punta del Cobre district, Chile, Early Cretaceous iron oxide Cu-Au (-Zn-Ag) mineralization. …”
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  17. 5497

    Evolución paleoambiental de la formación Río Mayer, cretácico inferior, cuenca austral, provincia de Santa Cruz, Argentina by Sebastián Richiano, Augusto N Varela, Abril Cereceda, Daniel G Poiré

    Published 2012-06-01
    “…A major change in the sedimentary systems of the Austral Basin during the Lower Cretaceous is the development of the deltaic Piedra Clavada Formation (Fig. 10d). …”
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  18. 5498

    Structural, metamorphic and geochronological studies in the south-east Tauern (Austria) by Waters, D

    Published 1976
    “…</p> <p>The recognition of a high temperature, relatively low pressure metamorphic event, distributed in an elongate east-west trending belt in the Altkristallin, suggests that the two contrasted early Alpine metamorphisms in the Alps constitute paired metamorphic belts indicating southward subduction under the Altkristallin during the Cretaceous. The absence of large volumes of igneous rocks may be explained if the subduction was relatively short-lived.…”
    Thesis
  19. 5499

    From atoms to landscapes through time: the chemical controls on carbonate precipitation and phosphate concentration in alkaline lakes by Pietzsch, R

    Published 2022
    “…Moving a step further, the knowledge from theory, geochemical modelling and experimental observations is combined with a detailed investigation of the ancient carbonate sediments from the Lower Cretaceous Barra Velha Formation, Santos Basin, offshore Brazil, in the South Atlantic ocean. …”
    Thesis
  20. 5500

    Adakitic magmatism, a window to evolution on tectonic and mineralization in eastern Iran by Saeed Saadat

    Published 2023-05-01
    “…This region is a part of the extensive magmatism that has spread from Turkey to Pakistan and had numerous magmatic activities over time, especially from the Cretaceous to the Quaternary. Adakitic series have received special attention in recent years in Iran and some articles have been published by various researchers. …”
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