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. Both profiles could be divided into …
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 ...
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 ...
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 ...
Distribution of wrinkle ridges in the southern mare basalt inside Apollo basin. (a) Topographic map of the mare basalt (Barker et al., 2016), with the WAC image as the basemap. The red rectangles mark the extents of b and c. (b–c) WRs 2–7 …
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
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
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 ...
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 locations.This 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 …
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 …
Cenozoic basalt distribution and faults of the continental-oceanic transitional zone over the South China Sea. Note: certain areas of basalts with small sizes or unconfirmed sizes due to insufficient data are shown with slight enlargement in order to be seen clearly.
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 ...
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 ...
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 ...
A Sketch of the tectonic framework of South China; B Map of the Sichuan–Yunnan–Guizhou metallogenic province, SW China, showing the distribution of the Emeishan flood basalts, major faults ...
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 ...
The simplified geological map of North China Craton at the lower right corner in (a) is after Zhao et al. (2001). The location of the Yujiagou basalts is marked by a red triangle (E118°46′57.7 ...
Cenozoic basalts are widely distributed in eastern China, and some of them contain zircon megacrysts which are considered to be constituent mineral of the subcontinental lithospheric mantle...
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 ...
(a) Map of the basalt distribution in onshore southwestern Australia based on drill holes and aeromagnetics (see Figures 2, 3). All drill holes that contain the Bunbury Basalt and deep intrusive ...
Chemical weathering of rocks has substantial influence on the global geochemical cycle. In this paper, the geochemical profile of a well-developed basalt weathering profile (>15 m thick, including soil, saprolite, semi-weathered rock and fresh basalt) on the Island of Hainan (South China) was presented.The soil and saprolite samples from this profile are characterized …
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.
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 …
The Columbia River Basalt Group reveals a complete and detailed stratigraphic suc- cession to assess the interplay of lithospheric and asthenospheric processes.
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 …
Chinese geotectonic map. Formation and Recycling of the Continental Crust in the Precambrian Period. Pentaplex fold zone (>2400Ma) and older crust; Zhongtiao (Lvliang) Fold …
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 …
physicallogdatafrom23deepboreholes.Theseboreholeswere drilledinthebasaltofthethirdmemberoftheYingchengForma-tion in the Xujiaweizi and g grabens of the Songliao
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 …
They subsequently created a new lunar surface chemical composition distribution map with high precision and high resolution, which comprehensively reflected the chemical characteristics of the ...