Stratigraphy and map distribution of main …
The Columbia River Basalt Group reveals a complete and detailed stratigraphic suc- cession to assess the interplay of lithospheric and asthenospheric processes.
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Heavy metal migration and lithium isotope fractionation …
Geological map of Hainan Island with sampling site marked by filled asterisk (revised from the 1:2 500 000 geological map of China). The sampled weathering profile of late Pleistocene basalt (E110°33′54.43″, N19°50′11.46″, Table 1 and filled asterisk in Fig. 1 ) is situated southeast of Haikou City, the capital of Hainan Province ...
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Cenozoic Basalts in North China Their Distribution, …
Sketch map showing the distribution of Cen zoie basaltic rocks in North China. 1. Prec6nozoie basement; 2. Cenozoic uplifting region; 3. Cenozoic basin; Quaternary 4. basalt; 5. Late …
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Continental-scale spatial distribution of chromium (Cr) in China …
Notably, proven economic Cr deposits in China are dominated by ophiolitic chromite deposits, such as the Luobusa in Tibet and Saertuohai in Xinjiang Province (Zhu et al., 2013; Hu et al., 2014). Whether the distribution of chromite deposits is coupled to the distribution of high Cr geochemical anomalies or not remain unclear.
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Distribution of igneous rocks in China revealed by …
Basalt and andesite are common in the Junggar with anomalies ranging from 100 to 350 ... This work provides a new distribution map of igneous rocks in China from a geophysical perspective. These findings will play an important role in concealed magmatic rocks and tectonic research. Meanwhile, the results will also provide a more detailed ...
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Hf isotopes of zircon megacrysts from the Cenozoic basalts in eastern China
KeywordsHf isotopes-zircon megacryst-lithospheric mantle-Cenozoic basalt-eastern China Distribution map of the Cenozoic basalts in eastern China. Hf isotopic compositions of zircon megacrysts in ...
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A Tectonic framework of China, showing the distribution of …
A Tectonic framework of China, showing the distribution of the Emeishan basalt province (after Bao et al. (2017)); B simplified geological map of the South China Craton and internal tectonic ...
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Cenozoic basalt distribution in Shandong province (a) and …
There are widespread Cenozoic basalts in Shandong province that are primarily distributed along the Tanlu fault ( Fig. 1a; Xu et al., 2009, and references therein). Based on geochronological …
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Chinese geotectonic map | Online map
Chinese geotectonic map. Formation and Recycling of the Continental Crust in the Precambrian Period. Pentaplex fold zone (>2400Ma) and older crust; Zhongtiao (Lvliang) Fold …
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Interactive map of mineral resources and mines …
The U.S. Geological Survey (USGS) Mineral Resources Data System catalogs information about mineral resources around the United States and the world. Using the map tool, users can zoom in to obtain reports and data on past and …
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Geochemistry and petrogenesis of Late Permian basalts
Schematic map of southwestern China showing the distribution of volcanic rocks in the Late Permian (a), and geological map of the Sichuan Basin showing the distribution of the …
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Lunar Nearside‐Farside Mare Basalt Asymmetry: The …
explanation requires no major difference in global mare basalt NS/FS mantle source regions; indeed, mare basalt ages on the NS/FS span a similar range, despite the lower abundance on the farside (Figure 1c). Additional support for crustal thickness as a factor in mare basalt distribution was found in analysis of mare
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(PDF) Origin of Northeast Fujian Basalts and Limitations on …
Cenozoic alkali basalts in Southeast (SE) China generally are genetically related to intracontinental rifting. Hence, they can be used to probe the nature of their underlying mantle sources and ...
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Continental-scale spatial distribution of chromium (Cr) in China …
Geochemical maps constructed by cumulative frequency method had intuitively shown the spatial distribution of Cr in China's mainland (Fig. 8). However, under the influence of lithologic variations in different tectonic units, large-scale positive anomalies were presented in some regions with high Cr background values such as the outcropped ...
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| (A) The distribution of the Emeishan basalts and …
Download scientific diagram | | (A) The distribution of the Emeishan basalts and cooper ore in southwest China (after Li et al., 2009) (B) Geologic map of the Zhaotong area, Yunnan Province ...
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A Tectonic framework of China, showing the distribution of …
Download scientific diagram | A Tectonic framework of China, showing the distribution of the Emeishan basalt province (after Bao et al. (2017)); B simplified geological map of the South …
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(PDF) Basalt Chronology of the Orientale Basin …
Distribution of the lunar basalts and basins in WAC image (108 m/pix). The boundary of the technical unit based on the work of Jolliff et al., [16], the rings the basins based on the work of Liu ...
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Characteristics of the lunar samples returned by the Chang'E …
The particle size distribution and the similarity between the true density of CE-5 soils and Apollo basalt indicate a possible basaltic origin of the CE-5 sample. The most abundant minerals composing CE-5 soils are pyroxene, followed by plagioclase, with fewer amounts of ilmenite and olivine, indicating that basaltic composition dominates CE-5 ...
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Distribution map of lining cracks of basalt fiber-reinforced …
Download scientific diagram | Distribution map of lining cracks of basalt fiber-reinforced concrete. from publication: Model Test on Bearing Characteristics of Basalt Fiber-Reinforced Concrete ...
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CRYSTAL SIZE DISTRIBUTION OF ILMENITE IN CHANG'E …
represents China's first lunar sample return. The site was chosen because it contains relatively young (~2 Ga) mare basalts, which has recently been confirmed [2,3]. Back-scattered electron (BSE) images (Fig. 1) and false color element maps were obtained and used to conduct quantitative textural analyses through
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(PDF) Mobilization and re-distribution of major and trace …
Mobilization and re-distribution of major and trace elements during extreme weathering of basalt in Hainan Island, South China July 2007 Geochimica et Cosmochimica Acta 71(13):3223-3237
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Vesicle distribution in basalt lava flow units in the …
physicallogdatafrom23deepboreholes.Theseboreholeswere drilledinthebasaltofthethirdmemberoftheYingchengForma-tion in the Xujiaweizi and g grabens of the Songliao
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a) Geological map of Israel; basalt and tuff are marked red …
a) Geological map of Israel; basalt and tuff are marked red and purple; b) Distribution map of Lower Palaeolithic sites and their associated lithology: Basalt and tuff (red), chalk chert and ...
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Map of the distribution and physiographic features of the …
The updated distribution map demonstrates that the earliest eruptions of flood-basalt volcanism at ~16.7 Ma (Steens Basalt) were essentially coincident in both time and space with the earliest ...
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Map of the Karoo continental flood basalt province showing …
Download scientific diagram | Map of the Karoo continental flood basalt province showing the distribution of the main volcanic remnants (red). The main Karoo basin broadly delineates the major ...
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Mobilization and re-distribution of major and trace …
Mobilization and re-distribution of major and trace elements during extreme weathering of basalt in Hainan Island, South China Jin-Long Ma a,b, Gang-Jian Wei a,*, Yi-Gang Xu a, Wen-Guo Long a,c ...
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Geochemical and Sr–Nd–Pb isotopic characteristics of basalt …
The magmatic age of mafic rocks from inland South China hold a significant tendency to become younger to the west. The spatial and temporal distribution and variation of components of basalt in South China indicated a mantle plume model which is derived from the 670 km thermal boundary layer (670 TBL) between the lower and upper mantle.
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Cobalt distribution and its relationship with bedrocks and …
Cobalt distribution patterns in China are consistent with rock types. The conterminous distribution patterns of high background concentrations falling in the Q75-Q85 …
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Geological Characteristics and Distribution of Granite …
The average heat flow value of 64.2 mW/m 2 in southern China is higher than that of 61 mW/m 2 in other mainland parts in China (Wang et al., 1990), which is close with that of the globe for 65 mW/m 2 (Yuan, 2006). The abnormally high value areas in South China are mainly distributed in the suture zone or regional deep fault zone.
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Distribution of eruptive volcanic basalt in the South China …
The results from the above-mentioned methods have shown that the distribution of the eruptive volcanic basalt is mainly concentrated along the South China Sea's sea floor-spreading axis ...
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