Presentation on theme: "Carbon-Silicate Cycle By: Tyler Molton & Michael A. Logan."— Presentation transcript:
Carbon-Silicate Cycle By: Tyler Molton & Michael A. Logan
What is carbon silicate? Defined as the geochemical cycle that is naturally occurring reversible chemical reaction with summary equation CaSiO3+CO2 CaCO3+SiO2. reaction is generally shifted in the favor of carbonate formation under near surface temperature and pressure conditions, but shifts to silicate formation at temperatures above 300 °C
The cycle as a process This cycle begins when CO 2 in the atmosphere dissolves in the water to form weak carbonic acid that falls as rain. The second step is then the acidic water travels through the ground and creates erosion of the Earth’s rocks that are silicate-rich. The erosion of the rocks release ions like calcium and bicarbonate Lastly the ions enters the grounds surface and eventually travels to the ocean.
Geological Importance This cycle is important to stabilize the concentration of carbon and silicone in the atmosphere. It can create negative feedback on the global temperature with a typical time scale of a few million years, which effectively counters water vapor and carbon dioxide short-term positive feedback.