Zobrazeno 1 - 10
of 2 083
pro vyhledávání: '"Zircon U–Pb age"'
Autor:
Shengli GONG, Zhuoyu YAN, Baiqiang LI, Tongyao ZHANG, Turong WU, Junfeng PENG, Lei ZHENG, Dongfeng ZHANG, Xiangsheng HUANG, Chengfei LUO, Ren WANG
Publikováno v:
地质科技通报, Vol 43, Iss 5, Pp 45-54 (2024)
Objective The middle Miocene submarine fan in the Qiongdongnan Basin is an important target for natural gas exploration in the northern South China Sea. However, there has been no consensus on the source of submarine fan sediments for a long time. Pr
Externí odkaz:
https://doaj.org/article/24db35a9e82e45129924b181ad8f3eab
Publikováno v:
Progress in Earth and Planetary Science, Vol 11, Iss 1, Pp 1-26 (2024)
Abstract The most common age constraint for the diatomaceous sediments is biostratigraphy of siliceous microfossils. Although biostratigraphy is a powerful tool to establish stratigraphy and correlate with sedimentary sequences in other sites, biostr
Externí odkaz:
https://doaj.org/article/2b7690425bb94360aa1e9c4dff242c75
Autor:
Chun-Mei Liu, Hao Zou, Hai-Feng Chen, Chen-Wei Li, Nuru Said, Chang-Cheng Huang, Xing-Xing Mao, Hui-Dong Yu, Hua-Wen Cao, Xin-Yu Liu
Publikováno v:
Solid Earth Sciences, Vol 9, Iss 3, Pp 100198- (2024)
In this study, we report for the first time a new gabbro diorite, forming in an intraplate extensional environment during the Early Devonian, in the Shimian of the western margin of the Yangtze Block. Zircon SIMS U–Pb dating indicates that the gabb
Externí odkaz:
https://doaj.org/article/720e3c188701498391e8a79b7e16fb8d
Publikováno v:
Minerals, Vol 14, Iss 9, p 941 (2024)
This article focuses on zircon U-Pb isotope dating and a whole-rock elemental analysis of granodiorites, monzonitic granites, granodioritic porphyries, and alkali feldspar granites in the Yangmugang area of the Lesser Xing’an–Zhangguangcai Range.
Externí odkaz:
https://doaj.org/article/2996bfba93264ddda827ea9a8b891405
Autor:
HaiTao Hong, ChunYu Qin, ShaoMin Zhang, ZhiJie Zhang, XiaoJuan Wang, Nan Li, DaWei Cheng, Wenbin Tang
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
This paper discusses the sedimentary environment and source supply in the sedimentary area and their coupling relationship through a detailed description of the deposits from the Ziliujing Formation to Shaximiao Formation of the Lower–Middle Jurass
Externí odkaz:
https://doaj.org/article/82ef3736241f441289d157dd985c5a3b
Publikováno v:
Minerals, Vol 14, Iss 6, p 537 (2024)
Eolian sediments are extensively distributed across the Earth’s surface, and their formation is intricately linked to climate change, tectonic activity, and topographic features. Consequently, the investigation of eolian sediments bears great geolo
Externí odkaz:
https://doaj.org/article/50f2c58625454e3f91b6e5053a16a607
Publikováno v:
Minerals, Vol 14, Iss 6, p 561 (2024)
Orogen-parallel ductile shear zones are conspicuous structures in the Khondalite Belt, but the timing of shearing remains poorly understood. Here, we present field-based structural and zircon U-Pb geochronological studies on the newly discovered Qian
Externí odkaz:
https://doaj.org/article/e9f2ce5a0e5c476a9762ba58021a4cd3
Autor:
Thuy Thi Bich Nguyen, Pham Trung Hieu, Qian Xin, Bui The Anh, Nguyen Thi Xuan, Pham Minh, Ho Thi Thu
Publikováno v:
Minerals, Vol 14, Iss 6, p 569 (2024)
The magmatic rocks of the Ben Giang-Que Son complex exposed in the southern part of the Truong Son belt have petrographic compositions including gabbro, gabbrodiorite, granodiorite, and granite. Geochemically, the magmatic rocks are of subalkaline af
Externí odkaz:
https://doaj.org/article/c1b71c05e4b84b89bdf26e7746e3569e
Publikováno v:
Minerals, Vol 14, Iss 3, p 301 (2024)
It has been accepted that granitoids of the Irizar unit in the Central Victoria Land (Antarctica), as an important part of the Granite Harbour Intrusives, were formed in a post-collisional setting during the Ross orogeny along the margin of east Gond
Externí odkaz:
https://doaj.org/article/33d9f5db9aa649cc98e5c297702411ac
Publikováno v:
Solid Earth Sciences, Vol 7, Iss 4, Pp 276-295 (2022)
The Xing–Meng Orogenic Belt hosts an amount of low-sulfidation epithermal gold deposits. However, the tectonic-magmatic setting remains problematic, which hinders understanding the factors that control the gold endowment in the region. Wulaga depos
Externí odkaz:
https://doaj.org/article/b4cba95563404f9e9ab31760d4f1fc35