Showing 261 - 280 results of 577 for search '"Paleoproterozoic"', query time: 0.23s Refine Results
  1. 261

    Carbon in Mineralised Plutons by Joseph G. T. Armstrong, John Parnell, Adrian J. Boyce

    Published 2022-05-01
    “…The Paleoproterozoic schists of the Leverburgh Belt, South Harris and the Neoproterozoic carbonaceous metasediments of the Dalradian Supergroup were deposited during the two most significant periods of black shale deposition globally. …”
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    Article
  2. 262

    Re-discussion on the detrital zircon provenance of the lower Yanchang Formation in the southern Ordos Basin by Zhang Yu, Liu Jianchao, Zhang Haidong, Chen Yangyang

    Published 2016-01-01
    “…The two older age groups (Paleoproterozoic, and Neoarchean) are likely derived from the North China Craton basement. …”
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    Article
  3. 263

    Detrital zircon geochronology of the Lützow-Holm Complex, East Antarctica: Implications for Antarctica–Sri Lanka correlation by Yusuke Takamura, Toshiaki Tsunogae, M. Santosh, Yukiyasu Tsutsumi

    Published 2018-03-01
    “…The Lützow-Holm Complex (LHC) of East Antarctica has been regarded as a collage of Neoarchean (ca. 2.5 Ga), Paleoproterozoic (ca. 1.8 Ga), and Neoproterozoic (ca. 1.0 Ga) magmatic arcs which were amalgamated through the latest Neoproterozoic collisional events during the assembly of Gondwana supercontinent. …”
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  4. 264

    AGE OF THE EARLY PALEOZOIC GRANITOID MAGMATISMIN THE CENTRAL PART OF THE BUREYA CONTINENTAL MASSIF, CENTRAL ASIAN FOLD BELT by R. O. Ovchinnikov, A. A. Sorokin, N. M. Kudryashov, V. P. Kovach, J. V. Plotkina, T. M. Skovitina

    Published 2020-03-01
    “…The Sm-Nd isotope stu­dies show that Late Ordovician quartz monzonites were formed mainly from crustal sources with Paleoproterozoic Nd model isotopic ages. Both ancient (Paleoproterozoic?) …”
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  5. 265

    Structures of sulfide melt crystallization as an indication of metamorphism of the ores in the Oleninskoe gold deposit by Kalinin A. A., Savchenko Y. E.

    Published 2020-04-01
    “…Signs of the Paleoproterozoic metamorphism are found in the ores of the neighboring Cu-Mo porphyry Pellapahk deposit as well.…”
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  6. 266

    Nanoscale analysis of pyritized microfossils reveals differential heterotrophic consumption in the ~1.9-Ga Gunflint chert. by Wacey, D, McLoughlin, N, Kilburn, MR, Saunders, M, Cliff, J, Kong, C, Barley, M, Brasier, M

    Published 2013
    “…This work also extends the record of remarkable biological preservation in pyrite back to the Paleoproterozoic and provides criteria to assess the authenticity of even older pyritized microstructures that may represent some of the earliest evidence for life on our planet.…”
    Journal article
  7. 267

    Increased biomass and carbon burial 2 billion years ago triggered mountain building by John Parnell, Connor Brolly

    Published 2021-11-01
    “…High burial of organic carbon in sediments around 2 billion years ago acted to enhance crustal deformation and led to intensified mountain building both in the Paleoproterozoic and since, suggests an assessment of the timing of carbon burial and deformation…”
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  8. 268

    Crustal growth history of the Korean Peninsula: Constraints from detrital zircon ages in modern river sediments by Taejin Choi, Yong Il Lee, Yuji Orihashi

    Published 2016-09-01
    “…Comparison of detrital zircon-age data between the North and South Korean river sediments reveals that the Paleoproterozoic zircon age distributions of both regions are nearly identical, while the Neoproterozoic–Paleozoic ages exist and the Mesozoic ages are dominant in southern Korean Peninsula. …”
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  9. 269
  10. 270

    The Multiple Metamorphism of Mafic Granulites From the East Hebei Terrane, North China Craton: Insights Into the Transition of Tectonic Regimes by Ting Liu, Ting Liu, Chunjing Wei, Chuan Yang, Zhuang Li

    Published 2022-05-01
    “…This study may have indications for the Neoarchean–Paleoproterozoic tectonic transition of the craton.…”
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    Article
  11. 271

    Composition of the Sub‐Cratonic Mantle of the Guiana Shield Inferred From Diamond‐Hosted Inclusions by R. Bassoo, K. S. Befus

    Published 2021-06-01
    “…Abstract The composition of diamond‐hosted inclusions provides insight into the character of the sub‐cratonic lithosphere of the Guiana Shield. Guyana's Paleoproterozoic diamonds preserve an inclusion suite comprised of forsterite (Fo ∼89.3–91.8), enstatite, chromite, and Cr‐pyrope. …”
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  12. 272

    Petrography, geochemistry and Sm-Nd isotopes of the granites from eastern of the Tapajós Domain, Pará state by Flávio Robson Dias Semblano, Moacir José Buenano Macambira, Marcelo Lacerda Vasquez

    “…ABSTRACT: The Tapajós Domain, located in the southern portion of the Amazonian Craton, is a tectonic domain of the Tapajós-Parima Province, a Paleoproterozoic orogenic belt adjacent to a reworked Archean crust, the Central Amazonian Province. …”
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  13. 273

    Contribution to the Geology and Geochronology of the Rio Capibaribe Terrane (TRC, Borborema Province) by Benjamim Bley de Brito Neves, Walter Mauricio Spröesser, Liliane Aparecida Petronilho, Solange Lucena Souza

    Published 2013-06-01
    “…This terrane exhibits gneissic-migmatitic basement complexes of Paleoproterozoic age and Neoproterozoicfold belts of the Tonian (“Cariris Velhos” cycle) and the Cryogenian – Ediacaran (“Brasiliano” cycle). …”
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  14. 274

    Origin of Mesozoic Porphyritic Rocks and Regional Magmatic Evolution in the Zijinshan Ore Field of Fujian Province, China: Hf-O Isotope Characteristics of Magmatic Zircons by Wenhui Zhang, Liyuan Wang, Xupeng Lv, Xiaomin Li, Shuaiqi Yan, Juntao Nie

    Published 2020-12-01
    “…The Paleoproterozoic crust was the predominant magmatic source for the subsequent Mesoproterozoic to Jurassic magmatism, but the only melts that were closely related to mineralization were derived from partial melting of the Mesoproterozoic crust and a more depleted upper mantle.…”
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  15. 275

    Detrital Zircons U-Pb Age and Hf Isotope from the Western Side of the Taiwan Strait: Implications for Sediment Provenance and Crustal Evolution of the Northeast Cathaysia Block by Yonghang Xu, Qinqin Sun, Liang Yi, Xijie Yin, Aijun Wang, Yunhai Li, Jian Chen

    Published 2014-01-01
    “…The wide ranges of εHf(t) value in the Paleoproterozoic and Neoproterozoic demonstrate the re-melting of ancient crustal materials with minor juvenile mantle materials. …”
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  16. 276

    Antiperthite and Mesoperthite Exsolution Textures in the Zhengjiapo BIF, Changyi Metallogenic Belt, North China Craton: Evidence of UHT Metamorphic Overprint by Yan-Rong Chen, Xu-Ping Li, Zeng-Sheng Li, Hans-Peter Schertl, Fan-Mei Kong

    Published 2023-07-01
    “…Paleoproterozoic banded iron formation (BIF) iron ore of the Zhengjiapo region of the Changyi metallogenic belt, Eastern Block of North China Craton contains abundant coexisting antiperthite and mesoperthite textures. …”
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  17. 277

    Before-Cambrian geology on the territory of the Botanic Garden by Kulikov V S, Kulikova V V

    Published 2001-12-01
    “…The description of the crystal foundation’s structure on the territory of the PetrSU Botanic Garden that is represented by different facial volcanogenous formations (lavas, tufas and others) of the Suisar and Zaonegye suites of the paleoproterozoic period is adduced. The got geochronological data served the material for the cor- relation between the Suisar formations and those of other Fennoskandian regions, carried out with the help of Sm-Nd and Pb-Pb methods (1975 ± 24 and 1980 ± 57 mln years).…”
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  18. 278
  19. 279

    Zircon U–Pb Age and Geochemistry of Ore-Hosting Rocks from the Liuhe Orefield of the Jiapigou Gold Ore Belt, NE China: Magmatism and Tectonic Implications by Jian Zhang, Yanchen Yang, Piyi Guo, Wukeyila Wutiepu

    Published 2022-09-01
    “…Zircon U–Pb data suggest that the ore-hosting magma emplacement in the Liuhe orefield mainly took place in two epochs: late Neoarchean to early Paleoproterozoic (ca. 2500 Ma) and early Jurassic of the Mesozoic era (ca. 170 Ma). …”
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  20. 280

    Spinel + quartz-bearing ultrahigh-temperature granulites from Xumayao, Inner Mongolia Suture Zone, North China Craton: Petrology, phase equilibria and counterclockwise p-T path by Huatian Zhang, Jianghai Li, Shoujie Liu, Wenshan Li, M. Santosh, Honghao Wang

    Published 2012-09-01
    “…The Khondalite Belt within the Inner Mongolia Suture Zone (IMSZ) in the North China Craton is a classic example for Paleoproterozoic ultrahigh-temperature (UHT) metamorphism. …”
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