scholarly journals Geochronology and Tectonic Evolution of the Lincang Batholith in Southwestern Yunnan, China

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Hongyuan Zhang ◽  
Junlai Liu ◽  
Wenbin Wu

Geochronological research of the Lincang Batholith is one key scientific problem to discuss the tectonic evolution of the Tethys. Two granitic specimens were selected from the Mengku-Douge area in the Lincang Batholith to perform the LA-ICPMS Zircon U-Pb dating based on thorough review of petrological, geochemical, and geochronological data by the former scientists. Rock-forming age data of biotite granite specimen from Kunsai is about 220 Ma, the Norian age. However, the west sample from Mengku shows 230 Ma, the Carnian age. The later intrusion in Kunsai area located east to the Mengku area shows directly their uneven phenomena in both space and time and may indirectly reflect the space difference of the contraction-extension transformation period of the deep seated faults. Considering the former 40Ar/39Ar data and the outcrop in Mengku, the Lincang Batholith should have experienced one tectonic exhumation and regional subsidence cycle. The regional subsidence cycle has close relations to the expansion of the Meso Tethys.

1985 ◽  
Vol 114 (1-4) ◽  
pp. 193-211 ◽  
Author(s):  
C. Craddock ◽  
E.C. Hauser ◽  
H.D. Maher ◽  
A.Y. Sun ◽  
Zhu Guo-Qiang

2018 ◽  
Vol 112 (1) ◽  
pp. 55-81 ◽  
Author(s):  
Dušan Plašienka ◽  
Štefan Méres ◽  
Peter Ivan ◽  
Milan Sýkora ◽  
Ján Soták ◽  
...  

2018 ◽  
Vol 3 (2) ◽  
pp. 3-10
Author(s):  
Dida Ibrahim Abdurrahman ◽  

Configuration of characters in a story is a representative manifestation that is able to communicate the order and value of cultural distinctiveness inherent in him. Along with the phenomenon of globalization, through the practice of appropriation, the various exclusive elements and knowledge of certain groups of society are reconstructed into new cultural entities, even if they do not originate in the space and time in which they created. The configurations Son Goku in manga (typical Japanese comic) Dragon Ball is a transcultural myth of elements in the classic Chinese novel Journey to The West mixed with the popular modern serial story of Superman from the American DC Comics and King Kong, as well as the mythology of lycanthropy from Europe. Through further investigation, the source taken in the Son Goku configuration is suspected of having a relationship with elements and knowledge of different spaces and past times (archaic), so that he is not just a popular myth, he is a collection of texts from various cultural civilizations that are scattered all over the earth.


2015 ◽  
Vol 89 (5) ◽  
pp. 1497-1515 ◽  
Author(s):  
ZHANG Heng ◽  
LI Tingdong ◽  
XIE Ying ◽  
ZHANG Chuanheng ◽  
GAO Linzhi ◽  
...  

2016 ◽  
Vol 154 (5) ◽  
pp. 923-945 ◽  
Author(s):  
CHANGFENG LIU ◽  
ZHIGUANG ZHOU ◽  
YONGJU TANG ◽  
CHEN WU ◽  
HONGYING LI ◽  
...  

AbstractZircon U–Pb dating and whole-rock geochemical analysis have been performed on Late Jurassic – Early Cretaceous intrusive rocks of the Ulanhot area, NE China, with the aim of constraining the tectonic evolution of the central and southern Da Xingan Range. Zircon U–Pb dating indicates that Late Jurassic – Early Cretaceous magmatic events experienced four stages at:c.155 Ma;c.144 Ma; 135–130 Ma; andc.126 Ma. Thec.155 Ma magmatic event consists of quartz diorite and granite-porphyryp with the geochemical characteristic of high Sr and Sr/Y or high A/CNK (1.38), implying the primary magma was derived from partial melting of a thickened lower crust which induced the closure of the Mongol–Okhotsk Ocean. Thec.144 Ma magmatic event consists of quartz monzodiorite with the geochemical characteristics of alkaline series, and indicates the delamination of a thickened crust. The 135–130 Ma magmatic event consists of syenogranite and granite-porphyry with characteristics of both I-type and A-type granites, which induced both the subduction of the Palaeo-Pacific oceanic plate and the post-orogenic extension of the Mongol–Okhotsk Orogenic Belt. Thec.126 Ma magmatic event consisted of highly fractionated I-type biotite granite and alkaline series gabbro, marking the end of the Mongol–Okhotsk Orogen, and implying that the study area was controlled by the circum-Pacific tectonic system during this stage.


Minerals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 341
Author(s):  
Yalong Li ◽  
Wei Yue ◽  
Xun Yu ◽  
Xiangtong Huang ◽  
Zongquan Yao ◽  
...  

The Bogeda Shan (Mountain) is in southern part of the Central Asian Orogenic Belt (CAOB) and well preserved Paleozoic stratigraphy, making it an ideal region to study the tectonic evolution of the CAOB. However, there is a long-standing debate on the tectonic setting and onset uplift of the Bogeda Shan. In this study, we report detrital zircon U-Pb geochronology and whole-rock geochemistry of the Permian sandstone samples, to decipher the provenance and tectonic evolution of the West Bogeda Shan. The Lower-Middle Permian sandstone is characterized by a dominant zircon peak age at 300–400 Ma, similar to the Carboniferous samples, suggesting their provenance inheritance and from North Tian Shan (NTS) and Yili-Central Tian Shan (YCTS). While the zircon record of the Upper Permian sandstone is characterized by two major age peaks at ca. 335 Ma and ca. 455 Ma, indicating the change of provenance after the Middle Permian and indicating the uplift of Bogeda Shan. The initial uplift of Bogeda Shan was also demonstrated by structural deformations and unconformity occurring at the end of Middle Permian. The bulk elemental geochemistry of sedimentary rocks in the West Bogeda Shan suggests the Lower-Middle Permian is mostly greywacke with mafic source dominance, and tectonic setting changed from the continental rift in the Early Permian to post rift in the Middle Permian. The Upper Permian mainly consists of litharenite and sublitharenite with mafic-intermediate provenances formed in continental island arcs. The combined evidences suggest the initial uplift of the Bogeda Shan occurred in the Late Permian, and three stages of mountain building include the continental rift, post-rift extensional depression, and continental arc from the Early, Middle, to Late Permian, respectively.


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