scholarly journals SHRIMP zircon age of the high aeromagnetic anomaly zone in central Tarim Basin and its geological implications

2012 ◽  
Vol 04 (01) ◽  
pp. 1-4 ◽  
Author(s):  
Guanghui Wu ◽  
Zhiyong Chen ◽  
Tailai Qu ◽  
Yanlong Xu ◽  
Chengze Zhang
Keyword(s):  
Tarim Basin ◽  
Zircon Age ◽  
Aeromagnetic Anomaly ◽  
Geological Implications ◽  
Shrimp Zircon

SHRIMP Zircon U-Pb Dating of the Tongshi Magmatic Complex in Western Shandong and Its Geological Implications

2005 ◽  
Vol 79 (4) ◽  
pp. 491-496
Author(s):  
HU Huabin ◽  
MAO Jingwen ◽  
LIU Dunyi ◽  
NIU Shuyin ◽  
WANG Yanbin ◽  
...  
Keyword(s):  
Magmatic Complex ◽  
Geological Implications ◽  
Shrimp Zircon ◽  
Western Shandong

SHRIMP zircon age control of Gondwanan sequences in Late Carboniferous and Early Permian Australia

1995 ◽  
Vol 89 (1) ◽  
pp. 145-174 ◽  
Author(s):  
John Roberts ◽  
Jonathan Claoue-Long ◽  
Peter J. Jones ◽  
Clinton B. Foster
Keyword(s):  
Late Carboniferous ◽  
Early Permian ◽  
Zircon Age ◽  
Shrimp Zircon

SHRIMP zircon U-Pb ages of Kalatongke No. 1 and Huangshandong Cu-Ni-bearing mafic-ultramafic complexes, North Xinjiang, and geological implications

2004 ◽  
Vol 49 (22) ◽  
pp. 2424-2429 ◽  
Author(s):  
Baofu Han ◽  
Jianqing Ji ◽  
Biao Song ◽  
Lihui Chen ◽  
Zonghuai Li
Keyword(s):  
North Xinjiang ◽  
Geological Implications ◽  
Shrimp Zircon

The Grenvillian assembly of Rodinia: Timing of accretion on the western margin of the Kalahari (Kaapvaal) Craton

2020 ◽  
Vol 123 (4) ◽  
pp. 441-464
Author(s):  
H.S. Van Niekerk ◽  
R. Armstrong ◽  
P. Vasconcelos
Keyword(s):  
Detrital Zircons ◽  
Age Dating ◽  
Granitic Gneiss ◽  
Detailed Model ◽  
Zircon Age ◽  
Western Margin ◽  
Tectonic History ◽  
Kalahari Craton ◽  
History Of ◽  
Shrimp Zircon

Abstract During the Grenvillian assembly of Rodinia, the Namaqua-Natal Metamorphic Province (NNMP) was formed as a result of the convergence of the Laurentia and Kalahari cratons. A detailed model for this accretion along the south-eastern margin of the Kalahari Craton has been established, but the tectonic history of the NNMP along the western margin of the Kalahari Craton has remained highly controversial. U-Pb SHRIMP zircon age dating of gneiss in the Kakamas Domain of the NNMP, as well as U-Pb SHRIMP age dating of detrital zircons and 40Ar/39Ar dating of metamorphic muscovite from sediments overlying the gneiss, confirms the presence of at least two separate events during the Namaqua-Natal Orogeny at ~1 166 Ma and 1 116 Ma. These events occurred after the Areachap Terrane was accreted onto the western margin of the Proto-Kalahari Craton during the Kheis Orogeny. 40Ar/39Ar ages derived from metamorphic muscovite formed in the metasediments of the Kheis terrane does not provide evidence for the timing of the Kheis Orogeny but suggests that it most likely only occurred after ~1 300 Ma and not at 1 800 Ma as commonly accepted. A U-Pb concordia age of ~1 166 Ma was derived from granitic gneiss in the Kakamas Domain of the Bushmanland Subprovince, possibly reflecting subduction and the initiation of continent-continent collision between the Proto-Kalahari Craton and the Bushmanland Subprovince. This granitic gneiss is nonconformably overlain by the metasediments of the Korannaland Group that contains metamorphic muscovite with 40Ar/39Ar ages of ~1 116 Ma. This age suggest that complete closure of the ocean between the Proto-Kalahari Craton and Bushmanland Subprovince probably occurred about 50 Ma after the intrusion of the ~1 166 Ma granitic gneisses.

A distant magmatic source for Cretaceous karst bauxites of Southern Apennines (Italy), revealed through SHRIMP zircon age dating

Terra Nova ◽  
2012 ◽  
Vol 24 (4) ◽  
pp. 326-332 ◽  
Author(s):  
Maria Boni ◽  
Steven M. Reddy ◽  
Nicola Mondillo ◽  
Giuseppina Balassone ◽  
Rich Taylor
Keyword(s):  
Age Dating ◽  
Southern Apennines ◽  
Zircon Age ◽  
Magmatic Source ◽  
Shrimp Zircon

Palaeoproterozoic U–Pb SHRIMP zircon age from basement rocks in Bangladesh: A possible remnant of the Columbia supercontinent

2007 ◽  
Vol 339 (16) ◽  
pp. 979-986 ◽  
Author(s):  
Ismail Hossain ◽  
Toshiaki Tsunogae ◽  
Hariharan M. Rajesh ◽  
Bin Chen ◽  
Yoji Arakawa
Keyword(s):  
Zircon Age ◽  
Columbia Supercontinent ◽  
Basement Rocks ◽  
Shrimp Zircon

scholarly journals Resolution of the age structure of the detrital zircon populations of two Lower Cretaceous sandstones from the Weald of England by fission track dating

1984 ◽  
Vol 121 (4) ◽  
pp. 269-277 ◽  
Author(s):  
A. J. Hurford ◽  
F. J. Fitch ◽  
A. Clarke
Keyword(s):  
Detrital Zircon ◽  
Lower Cretaceous ◽  
Fission Track ◽  
Age Distribution ◽  
The Other ◽  
Fission Track Dating ◽  
Zircon Age ◽  
Zircon Fission Track ◽  
Geological Implications ◽  
Fission Track Ages

AbstractModes in the frequency of distribution of fission track ages obtained from detrital zircon grains may prove characteristic of individual sandstone bodies, supporting the identification of the sources from which a particular flow of sedimentary detritus was derived and thus allowing new inferences to be made concerning palaeogeography. A computer program has been written and used to identify modes in the zircon fission track age distribution within two Lower Cretaceous sandstone samples from the Weald of southern England. Pronounced modes appear in one rock around 119 Ma, 160 Ma, 243 Ma and 309 Ma and in the other around 141 Ma, 175 Ma, 257 to 277 Ma and 394 to 453 Ma. The geological implications of these quite dissimilar zircon age spectra are discussed. It is concluded that they support the palaeogeographical models of Allen (1981) and indicate that the provenance of the first sample, from the Top Ashdown Sandstone member at Dallington in East Sussex, was almost entirely southerly, while that of the second, from the Netherside Sand member at Northchapel in West Sussex, was more varied, but predominantly westerly and northerly.

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