The Mesozoic rift basins of northeast China are characterized by a significant proportion of basalt due to the progressive emplacement of basalt lava flows The objective of this study was to construct vesicle distribution models of the basalt lava flow units including conceptual geological models and thickness models to understand the architecture of the
Similarly trends in the thickness of the massive core zone and the base vesicle zone relative to the basalt lava flow unit thickness can be expressed by a piecewise linear function Vesicle distribution models provide an effective means of determining the proportion and distribution of vesicle zones in basalt with limited borehole data
The chemical compositions of the extrusive rocks are characterized by both alkaline basalt and tholeiitic basalt and belong to the subalkaline type of transitional basalt magma eruption LUO Zhili A discussion of taphrogenesis and hydrocarbon distribution in China Bulletin of the Chinese Academy of Ge ological Sciences 1984 6 3 99â
According to the division of basalt distribution regions the CO 2 emission in the east of China close to the coastline is Gt which is the largest one taking 37% of the total CO 2 emissions in China
B Distribution and sample locations of Chifeng Xilin Hot Cenozoic basalts Solid blue triangles solid green diamonds and solid red circles represent sample locations in this study Half filled diamonds and half filled circles represent transitional basalt locations from the literature Wang et al 2015; Guo et al 2016; Pang et al 2019
A lateritic weathering profile of basalt from Hainan Island South China was studied by determining bulk δ⁹⁸Mo values as well as δ⁹⁸Mo values of extracted Fe Mn hydro oxides and
Any further distribution of this work must maintain attribution to the author s and the title of the work journal citation and DOI Wu G et al 1998 The Emeishan flood basalt in SW China A mantle plume initiation model and its connection with continental breakup and mass extinction at the Permian Triassic Boundary America Geophysical
Geological map showing simplified distribution of the basalt in the Leizhou Peninsula China and profiles sampling location a ; field photographs of NLC b and CLL c weathering profiles Continental scale spatial distribution of chromium Cr in China and its relationship with ultramafic mafic rocks and ophiolitic chromite deposit Appl
Basalt was the main lithology of the study area and is mostly olivine basalt Its distribution accounts for more than 50% of the study area with an overall thickness of 500 1700 m Yan et al 2015 The mineral is mainly comprised of pyroxene plagioclase and olivine and contains a small amount of dolomite calcite and strontianite
Assuming a 3D random distribution of BFs a nonlinear viscoelastic dynamic constitutive model of BFRCs was developed The fine aggregate used in concrete was a natural river sand with a fineness modulus of J Y He X Q Huang and C Y Tian Experimental study on strengthening and crack resistance of basalt fiber China
Basalt fibers BFs are formed by drawing molten basalt one of the most widely distributed volcanic rocks on the earth for which the primitive magma originates from the upper mantle 1 at high temperatures ranging from 1450 to 1500° BFs have excellent mechanical and physical properties 2 10 such as excellent acid and alkali corrosion resistance 11 14 high
Volcanic basalt eruption activity in the South China Sea and adjacent areas occurred strongly in Cenozoic E ra However it is difficult to define their ranges and spatial paper presents the methods of reduction to the magnetic equator in low latitudes to bring out a better correlation between magnetic anomalies and their causing sources; high
The objective of this study was to construct vesicle distribution models of the basalt lava flow units including conceptual geological models and thickness models to understand the architecture
Geological Background and Petrographic Features The study area is located in the northern part of the Nanpanjiang Youjiang rift basin in western Guangxi Local tectonism is strong and has undergone the Caledonian Early Paleozoic Variscan Late Paleozoic Indosinian Triassic Yanshanian Jurassic Cretaceous and Himalayan Cenozoic tectonic
In northeast China Cenozoic intraplate basalts are widely distributed and the underlying mantle transition zone MTZ contains remnants of the subducted Pacific slab the
Distribution of late Cenozoic <16 Ma intraplate volcanism in the South China Sea region which includes Beibuwan Leiqiong peninsula Pearl River mouth basin SCS basin and the Indochina block 29
Citation Liang Yuxin Li Hong Zhang Dongdong Yang Kang Zhou Dingwu Zheng Tianyu Dong Yangkun Zhai Liguo 2021 Geochemical characteristics and genetic analysis of Huayingshan Emeishan basalt in Sichuan Basin
This means that the water content contrast between the basalt source and the lithospheric mantle for a specific area and the regional water distribution in the lithospheric mantle and in the basalt source for entire eastern China could be explored Chen et al
[1] Although peridotite xenoliths are common in alkaline basalts it is still unclear whether the chemical compositions of their host rocks have been affected by these mantle fragments and if so what processes are involved in this alteration of the host basalts Here we document a kind of xenolith rich alkaline basalts from the Nanjing basaltic field eastern China
The basalt weathering profiles on the tropical Hainan Island and the Leizhou Peninsula in South China show that preferential binding of the light 6 Li isotope to Fe Mn oxides is the primary cause of Li isotope fractionation Tong et al 2021; Xiong et al 2022
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