Sự dịch chuyển dọc theo đứt gãy có thể tạo ra nếp uốn, hoặc do các đứt gãy không có mặt phẳng, hoặc do các lớp đá trượt dọc theo nó, tạo thành các nếp uốn kéo, khi trượt xuất hiện dọc theo đứt gãy. Các đá nằm sâu hơn trong lòng đất thì có ứng xử như vật liệu dẻo, và tạo ra nếp uốn thay vì đứt gãy | . Phạm Hữb Sy - ĐHTL I i3 PHONG HOÁ ĐÁ tiếp 0 Thuỷ phân 0 Hydrolysis is a chemical reaction or process in which a molecule is split into two parts by reacting with a molecule of water. One of the parts gets an OH- from the water molecule and the other part gets an H from the water 0 Feldspars are an important silicate mineral group in granite and granite-type stones with their general formulas containing potassium sodium and calcium. These soluble elements are leached out during the chemical reaction with acidicly charged waters 0 H2O CO2. H2CO3 0 Acid then dissociates and the following happens 0 2KAISi3O8 feldspar 2H H2O ----- AI4Si4O10 OH 8 clay 2K 4SIO2 . Phạm Hữb Sy - ĐHTL I Ĩ3 PHONG HOÁ ĐÁ tiếp 0 Thuỳhũá 0 Hydration is the chemical addition of water molecules to a mineral. This process frequently produce a new mineral compound. In addition the size of the mineral structure is increased causing stress and developing zones of weakness. This can increase the overall permeability of the stone and lead to spalling pitting and flaking. Overall color changes can take place as well. . Phạm Hữu Sy - ĐHĨL Ĩ3 PHONG HOẤ ĐÁ tiếp Organisms can assist in breaking down rock into sediment or .
