Granulite facies xenoliths from the Yuhuashan complex, central Jiangxi, South China: constraints on Late Palaeozoic orogeny and middle-lower crust components

2016 ◽  
Vol 34 (1) ◽  
pp. 45-61 ◽  
Author(s):  
C. Zhang ◽  
J. Yu ◽  
S. Y. O'Reilly ◽  
W. L. Griffin ◽  
J. Qian ◽  
...  
Keyword(s):  
South China ◽  
Lower Crust ◽  
Granulite Facies ◽  
Late Palaeozoic

scholarly journals Granulite-Facies Xenoliths in Rift Basalts of Northern Tanzania: Age, Composition and Origin of Archean Lower Crust

2014 ◽  
Vol 55 (7) ◽  
pp. 1243-1286 ◽  
Author(s):  
A. T. Mansur ◽  
S. Manya ◽  
S. Timpa ◽  
R. L. Rudnick
Keyword(s):  
Lower Crust ◽  
Granulite Facies ◽  
Age Composition ◽  
Northern Tanzania

Spatial distribution and origin of the high-velocity lower crust in the northeastern South China Sea

2021 ◽  
pp. 229086
Author(s):  
Jinhui Cheng ◽  
Jiazheng Zhang ◽  
Minghui Zhao ◽  
Feng Du ◽  
Chaoyan Fan ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
South China Sea ◽  
South China ◽  
High Velocity ◽  
Lower Crust ◽  
China Sea ◽  
Northeastern South China Sea

Middle Permian (Roadian) gastropods from the Khao Khad Formation, Central Thailand: Implications for palaeogeography of the Indochina Terrane

Zootaxa ◽  
2020 ◽  
Vol 4766 (1) ◽  
pp. 1-47 ◽  
Author(s):  
CHATCHALERM KETWETSURIYA ◽  
BARAN KARAPUNAR ◽  
THASINEE CHAROENTITIRAT ◽  
ALEXANDER NÜTZEL
Keyword(s):  
New Species ◽  
Shallow Water ◽  
South China ◽  
New Genus ◽  
Middle Permian ◽  
Late Permian ◽  
Gastropod Species ◽  
Late Palaeozoic ◽  
Central Thailand

A new Permian gastropod assemblage from the Roadian (Middle Permian) Khao Khad Formation, Saraburi Group (Lopburi Province, Central Thailand) which is part of the Indochina Terrane, has yielded one of the most diverse Permian gastropod faunas known from Thailand. A total of 44 gastropod species belonging to 30 genera are described herein, including thirteen new species and one new genus. The new genus is Altotomaria. The new species are Bellerophon erawanensis, Biarmeaspira mazaevi, Apachella thailandensis, Gosseletina microstriata, Worthenia humiligrada, Altotomaria reticulata, Yunnania inflata, Trachydomia suwanneeae, Trachyspira eleganta, Heterosubulites longusapertura, Platyzona gradata, Trypanocochlea lopburiensis and Streptacis? khaokhadensis. Most of the species in the studied assemblage represent vetigastropods  (35.6%) and caenogastropods (26.7%) and most of the species belong to Late Palaeozoic cosmopolitan genera. The studied faunas come from shallow water carbonates that are rich in fusulinids, followed by gastropods, ostracods, bivalves and brachiopods. The gastropod assemblage from the Khao Khad Formation shares no species with the gastropod assemblages from other Permian formations in Thailand, the Tak Fa Limestone and the Ratburi Limestone. However, it is similar to the Late Permian gastropod faunas from South China of the Palaeo-Tethys, therefore it suggests that the Indochina Terrane was not located far from South China. 

Origin of TTG-like rocks from anatexis of ancient lower crust: Geochemical evidence from Neoproterozoic granitoids in South China

Lithos ◽  
2009 ◽  
Vol 113 (3-4) ◽  
pp. 347-368 ◽  
Author(s):  
Shao-Bing Zhang ◽  
Yong-Fei Zheng ◽  
Zi-Fu Zhao ◽  
Yuan-Bao Wu ◽  
Honglin Yuan ◽  
...  
Keyword(s):  
South China ◽  
Lower Crust ◽  
Geochemical Evidence

scholarly journals A window into the lower crust: Trace element systematics and the occurrence of inclusions/intergrowths in granulite-facies rutile

2018 ◽  
Vol 59 ◽  
pp. 76-86 ◽  
Author(s):  
Emma Hart ◽  
Craig Storey ◽  
Simon L. Harley ◽  
Mike Fowler
Keyword(s):  
Trace Element ◽  
Lower Crust ◽  
Granulite Facies

Metamorphism and geochronology of high-pressure mafic granulites (retrograded eclogites?) in East Cathaysia terrane of South China: Implications for Mesozoic tectonic evolution

2021 ◽  
Author(s):  
Yanfei Xia ◽  
Changqing Yin ◽  
Shoufa Lin ◽  
Jian Zhang ◽  
Jiahui Qian ◽  
...  
Keyword(s):  
High Pressure ◽  
South China ◽  
Secondary Ion Mass Spectrometry ◽  
Trace Element Analysis ◽  
Granulite Facies ◽  
Crustal Thickening ◽  
Element Analysis ◽  
Garnet Porphyroblasts ◽  
High Pressure Granulite ◽  
The Matrix

High-pressure mafic granulites (retrograded eclogites?) were discovered as minor lenses enclosed in garnet-kyanite-cordierite gneiss from the Badu Complex of the East Cathaysia terrane in South China. These rocks consist mainly of garnet, clinopyroxene, hornblende, quartz, and rutile/ilmenite with or without omphacite pseudomorphs that are indicated by clinopyroxene + sodic plagioclase symplectic intergrowths. Mineral textures and reaction relationships suggest three metamorphic stages: (1) an eclogite-facies stage (M1) characterized by the mineral assemblage of garnet + clinopyroxene (omphacite) + hornblende + rutile + quartz; (2) a high-pressure granulite-facies (M2) stage mainly represented by garnet + clinopyroxene + plagioclase + hornblende + rutile + quartz in the matrix; and (3) an amphibolite retrograde stage (M3) defined by hornblende + plagioclase + ilmenite + quartz symplectites surrounding garnet porphyroblasts. Conventional geothermometers and geobarometers in combination with phase equilibria modeling constrain metamorphic P−T conditions of 15.8−18.2 kbar/625−690 °C (M1), 11.8−14.5 kbar/788−806 °C (M2), and 5.4−6.4 kbar/613−668 °C (M3), respectively. Two-staged decompression processes are defined after the peak pressure, which suggests a two-staged exhumation of these deeply buried rocks. Secondary ion mass spectrometry (SIMS) zircon U-Pb dating and trace element analysis show that the high-pressure metamorphism occurred at 240−244 Ma. Complete early Mesozoic orogenic processes characterized by initial subduction and/or crustal thickening and subsequent exhumation followed by rapid uplift are reconstructed for this part of the East Cathaysia terrane, South China.

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