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uraninite in Triassic-Jurassic sediments

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Journal Article
Journal: Economic Geology
Published: 01 March 1955
Economic Geology (1955) 50 (2): 233–234.
Journal Article
Journal: Economic Geology
Published: 01 June 1954
Economic Geology (1954) 49 (4): 351–361.
... of Triassic age. There are two principal modes of occurrence of uraninite, one with sulfides of copper, the other in asphaltic bodies. In both types, the association with fossil plants is the rule. Uraninite generally replaces cell walls of the plants, and the copper sulfides are more apt to fill the cells...
Journal Article
Journal: Economic Geology
Published: 01 September 1958
Economic Geology (1958) 53 (6): 639–662.
... in and immediately below paleochannels cut into the Triassic Moenkopi formation and filled with sediments of the Shinarump member of the Triassic Chinle formation. Most ore occurs in local scours along these channel courses. Within the channels and scours, uranium deposits appear to have been controlled largely...
Journal Article
Published: 01 June 2011
Russ. Geol. Geophys. (2011) 52 (6): 593–602.
... Yan’an Formation; 4 , Middle Jurassic Zhiluo Formation; Systems: 5 , Triassic, 6 , Permian, 7 , Carboniferous, 8 , Ordovician, 9 , Cambrian, 10 , Precambrian; 11 , Cenozoic graben; 12 , boundaries of dips and strikes; 13 , large regional faults; 14 , North China block; 15 , uranium deposit. I...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 2001
GSA Bulletin (2001) 113 (5): 625–639.
... taken place after 195 Ma. This result also provides a minimum age for the migmatite's precursor sediment deposition, which is broadly consistent with the tentatively suggested Permian–Triassic age for the Wakhan slates ( Hayden, 1915 ; Kafarskyi and Abdullah, 1976 ; Buchroithner, 1980 ; Gaetani...
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Journal Article
Journal: Economic Geology
Published: 01 March 2022
Economic Geology (2022) 117 (2): 273–304.
... of Triassic-Jurassic non-marine clastic sediments in the Newark, Hartford and Deerfield rift basins, northeastern USA : Chemical Geology , v. 133 , p. 89 – 124 . Veríssimo , C.U.V. , Santos , R.V. , Parente , C.V. , Oliveira , C.G. , Cavalcanti , J.A.D. , and Nogueira Neto , J.A...
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Journal Article
Published: 01 April 2011
The Canadian Mineralogist (2011) 49 (2): 487–501.
...Ibrahim Wagani; Maurice Pagel; Émilie Janots; Edwin Gnos Abstract A detailed study using back-scattered electron imaging and electron-microprobe analysis shows that grains of detrital monazite are present in the Carboniferous, Permian, Triassic and Jurassic sediments of the Tim Mersoï basin...
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Journal Article
Journal: AAPG Bulletin
Published: 01 January 1998
AAPG Bulletin (1998) 82 (1): 50–69.
... uraninite inclusions (white), Taylor Creek sequence; (D) nodule with marginal shrinkage cracks and containing blocky monazite inclusions (white), Permian–Triassic sandstones, Perth Basin, Western Australia, Dongara 4 well, 1693-m depth; (E) nodule with internal shrinkage cracks filled by illite-sericite...
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Journal Article
Journal: Economic Geology
Published: 01 December 2005
Economic Geology (2005) 100 (8): 1489–1509.
... with oceanic anoxic events (Fig. 12 ). A similar correlation in pre-Jurassic sediments is difficult to establish owing to the absence of contemporaneous deep ocean sediments. However, the high stand of sea level during the deposition of the Middle Ordovician deposit in Taojang, China, suggests...
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Journal Article
Journal: AAPG Bulletin
Published: 01 June 1978
AAPG Bulletin (1978) 62 (6): 1049–1062.
... or coffinite, for example, in coalified logs from Triassic and Jurassic uranium-bearing sediments of the Colorado Plateau and from Paleocene and Eocene sediments of Wyoming (Berger, 1974). Permeability —Although many other physical factors affect the accumulation of uranium in host rocks, permeability has...
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Journal Article
Published: 01 September 2021
American Mineralogist (2021) 106 (9): 1503–1519.
.... , Cao , J.-Y. , Jiang , J.-B. , and Wu , J.-H. ( 2019 ) Fluid evolution of Triassic and Jurassic W mineralization in the Xitian ore field, South China: Constraints from scheelite geochemistry and microthermometry . Lithos , 330-331 , 1 – 15 . Ludwig , K.R. ( 2003 ) User’s...
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Journal Article
Published: 01 June 2017
Bulletin of Canadian Petroleum Geology (2017) 65 (2): 327–342.
... that occur at, or near, the sediment depositional surface, where the geochemistry of the interstitial waters is controlled mainly by the depositional environment. Early diagenesis can also be defined in terms of temperature, geothermal gradient and depth, where the upper temperature limit is <70°C...
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Journal Article
Journal: Economic Geology
Published: 01 August 2023
Economic Geology (2023) 118 (5): 1177–1199.
... al., 2020 ). The Zhuguangshan batholiths consist of granites formed mainly in three stages: Silurian (~420 Ma), Triassic (240–220 Ma), and Jurassic (165–150 Ma) ( Fig. 1 b) ( Zhou et al., 2006 ; Zhang et al., 2021a ). The Triassic granites crop out in the eastern part of the Zhuguangshan batholiths...
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Journal Article
Published: 01 July 2022
American Mineralogist (2022) 107 (7): 1396–1409.
... and Yang 2000 ); (4) an independent intra-continental basin stage characterized by deposition of middle to late Mesozoic sedimentary units dominated by fluvial, deltaic and lacustrine environments, and containing various energy resources including (from oldest to youngest in Jurassic sediments) oil...
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Journal Article
Published: 01 May 1972
Journal of the Geological Society (1972) 128 (3): 273–294.
... convergence. Eastwards the hills diverged to encompass a lowland depression, divided into northern and southern basins by the Cornubian island. After the first sediment arrived in the ?Permian there were important fluctuations of supply and composition during the late Trias/early Jurassic, late Jurassic/early...
Journal Article
Published: 13 February 2017
European Journal of Mineralogy (2017) 29 (5): 915–922.
... and Keuper), Jurassic and Cretaceous sediments are paraconcordant ( Mey et al. , 1968 ). At the top of the Triassic sediments, small outcrops of late-Triassic ophites can be found, probably related to the Atlantic opening ( Béziat et al. , 1991 ). On top of these units, the continental post-tectonic...
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Journal Article
Published: 01 October 2020
American Mineralogist (2020) 105 (10): 1556–1571.
... from minerals in the source rocks (e.g., McGloin et al. 2016 ). In granitoids, uranium is mainly hosted in accessory phases such as uraninite, zircon, thorite, allanite, and monazite ( Pagel 1982 ; Cuney and Friedrich 1987 ; Bea 1996 ; Förster 1999 ; Cuney 2009 , 2014 ). Therefore, microscale...
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Journal Article
Published: 01 June 2000
The Canadian Mineralogist (2000) 38 (3): 675–684.
... ] and approaches end-member composition (86.3 to 96.7 mol.% ThSiO 4 ). Th – U – total Pb dating reveals a late Tertiary (Miocene) age for the huttonite. The thorite records older ages, from late Triassic–early Jurassic to early Tertiary. All ages coincide with major metamorphic or magmatic events on South Island...
FIGURES
Journal Article
Published: 01 June 2008
The Canadian Mineralogist (2008) 46 (3): 635–650.
... . 1992 ). Late Triassic to Early Jurassic extensional tectonics led to the uplift of subcontinental mantle, evidenced by a reheating event at 215±15 Ma ( Lu et al . 1997 ) and K and Na metasomatism of the Finero Complex at 207 Ma with the emplacement of zircon-bearing pegmatites within the Finero...
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Journal Article
Published: 01 June 2019
Russ. Geol. Geophys. (2019) 60 (6): 631–641.
.... , 2008 . Noble metal minerals in metalliferous sediments of the TriassicJurassic carbonaceous sequence in Sikhote Alin. Dokl. Earth Sci. 421 ( 2 ), 919 - 922 . Kazachenko , V.T. , Lavrik , S.N. , Perevoznikova , E.V. , 2015 . Gabbroids...
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