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The rate of silicification depends on a few factors: 1) Rate of breakage of original cells [20] 2) Availability of silica sources and silica content in the fluid [1] [3] 3) Temperature and pH of silicification environment [1] [3] 4) Interference of other diagenetic processes [3] [21] These factors affect the silicification process in many ways.
A new world of gold and silver. Brill, 2010. TePaske, John J. The Royal Treasuries of the Spanish Empire in America, 2 vol (1982) vol1 online also vol 2 online; Xiantang, Li. "The Paradoxical Effect of Silver in the Economies of Ming and Qing China: On the New Myth Created by the 'Global Economic View' of Andre Gunder Frank and Kenneth Pomeranz."
For example, global aquaculture production for shellfish contributed US$29.2 billion to the world economy. [58] Damaged shell surfaces, primarily resulting from reduced calcification rates, contribute to a significant decrease in sale prices, marking a critical economic concern.
Silicon cycle and balance in the modern world ocean [1] Input, output, and biological silicon fluxes, with possible balance. Total silicon inputs = total silicon outputs = 15.6 Tmol Si yr −1 in reasonable agreement with the individual range of each flux.
The first list includes estimates compiled by the International Monetary Fund's World Economic Outlook, the second list shows the World Bank's data, and the third list includes data compiled by the United Nations Statistics Division. The IMF's definitive data for the past year and estimates for the current year are published twice a year in ...
This accounts for the detail found in permineralization. Silicification reveals information about what type of environment the organism was likely to have lived in. Most fossils that have been silicified are bacteria, algae, [3] and other plant life. Silicification is the most common type of permineralization. [4]
The world economy or global economy is the economy of all humans in the world, referring to the global economic system, which includes all economic activities conducted both within and between nations, including production, consumption, economic management, work in general, financial transactions and trade of goods and services.
Often the host rock is entirely replaced by chlorite, which may appear as a chlorite schist in deformed examples. Sericite zone, found in nearly all examples, consisting of sericite ± chlorite ± silica, Silicification zone, often gradational with background silica-albite metasomatism.