10−3 mg/liter (some field water) Be, Co, Ga, Ge, Pb, V, W, Zn Ca2+ may form scale of CaCO3 or CaSO4; Ba2+ and Sr2+ may also form scale of sulfate, such as the scale in tubing in the Changqing Maling oil field and the scale of barium sulfate in tubing of the production...
During the course of the Cenozoic Earth’s surface temperatures have exhibited a long-term reduction1,2. However, amidst the backdrop of this general cooling trend, the Earth experienced a number of warming phases on million year timescales, such as the Early Eocene Climatic Optimum3. Global wa...
CaCO3, while this form had disappeared after 3 weeks, being replaced by porous, crystalline FTIR analyses of the stored grid with recrystallized carbonate match with that of calcite, no ACC-like spectra were observed. The formation of porous calcite is in accordance with the transformation of ...
When CaCO3 are replaced by dolomite, Mg2+ ions are incorporated into crystal lattices and Ca2+ ions release. The reaction can be expressed by the following equation (Tucker and Wright, 1990):(2)2CaCO3+Mg2+→CaMg(CO3)2+Ca2+ Because the difference between molar volumes between Mg2+ and Ca...
This equation reflects the philosophy of Archie’s equation with a simple, physically understandable structure (based on a capillary m ) and empirical parameters covering the complicated geometry and structure of the pore space in a fascinating way. And it teaches us that we need laboratory core ...
Bottom currents are also active in the rift valley, but their primary effect is the localized formation of transient ripple and scour features. The CaCO3... Marks, N. S 被引量: 2发表: 1979年 Conceptualizing Aeolian Sediment Transport in a Cellular Automata Model to Simulate the Bio-Geomorphol...
The results of applying this equation suggested that aragonite transformed into calcite through a solid-to-solid process. The formation of magnesian calcite was interpreted as the following process: aragonite nuclei, formed owing to Mg2+ions at the initial stage of CaCO3crystallization, transformed ...
structures of MgCO3, 176 CaCO3 and CO2 and their 17. Boulard, E. et al. New host for carbon in the deep Earth. Proc. Natl. Acad. Sci. USA 108, 5184–5187 (2011). 18. Boulard, E. et al. Experimental investigation of the stability of Fe-rich carbonates in the lower mantle. J....
CaCO3 medium lb. 5 Sodium sulfite lb. 0.25–0.3 Soltex lb. 1–2 BlackNite gal 0.3–0.5 SOURSCAV lb. 2 2.3. Solvent for barite filter cake removal The barite filter cake removal solvent consists of a chelating agent, Diethylenetriaminepentaacetic acid (DTPA), with a concentration of 20 ...
P. Molecular-dynamics simulations of CaCO3 melts to mantle pressures and temperatures - implications for carbonatite magmas, Earth Plan. Sci. Lett. 131, 225 (1995). 16. Tissen, J. T. W. M. & Janssen, G. J. M. Molecular-dynamics simulation of molten alkali carbonates. Mol. Phys. 71,...