"Head of Cat" Waterfall River Stone on Granite Base (not shown)
Origination: China
Approximate Height - 47" - Width - 38.3" - Depth - 30"
"Head of Cat" Waterfall River Stone of Basaltic Composition: $16,000.00 U.S.D.
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Beautiful several centuries old basaltic rock that has been carved by nature, typically composed by multiple different elements with particular chemistry (SiO2 45-55 wt%, high in Fe, Mg, Ca, low in K, Na) that provides the rock with considerable durability. This “head of a cat shaped†rock found in a large water fall in Eastern China was extracted with a 3 month long intense effort, clean and transported in a most difficult conditions. It is a prize.
The Cenozoic volcanicity of eastern China is entirely basaltic and occurred as relatively small eruptions widely dispersed in space and time, closely associated with graben basins and their regional bounding faults. Samples (157) from over 30 sites in eastern China have been studied. They are predominantly alkaline basalts, but vary in composition from olivine nephelinites and leucitites to quartz tholeiites. The majority are aphyric but some contain olivine and clinopyroxene phenocrysts. Whole-rock analyses (X-ray fluorescence) of all samples for the major and 13 trace elements are used, as are the compositions of all the major mineral phases determined by electron microprobe.
The Cenozoic magmatism of eastern China is seen as a typical example of volcanism associated with continental extension. That is, small volumes of predominantly alkalic basalts and olivine tholeiites erupted over a prolonged period and associated with extensional basins and their bounding faults. As such, the province is distinct from continental flood basalt provinces At depth in the Earth nearly all magmas contain gas dissolved in the liquid, but the gas forms a separate vapor phase when pressure is decreased as magma rises toward the surface. This is similar to carbonated beverages which are bottled at high pressure. The high pressure keeps the gas in solution in the liquid, but when pressure is decreased, like when you open the can or bottle, the gas comes out of solution and forms a separate gas phase that you see as bubbles. Gas gives magmas their explosive character, because volume of gas expands as pressure is reduced.
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