MAIN ELEMENT THAT MAKE UP MARBLE
What are the main element/minerals that make up
marble and what are the main weathering process which affect it. If if it hard to break down. Why
Weathering Physical (Mechanical) Weathering: - Frost wedging - water freezing in cracks & expanding - Salt wedging - crystallization of salts in pores - Unloading - release of confining stress - sheeting, exfoliation, jointing - Thermal expansion - also produces sheeting & exfoliation - Organic Activity - root wedging
Physical weathering reduces
rocks size, increases surface area - rock dis-aggregated into minerals, bulk chemistry unchanged
Chemical Weathering: - change in bulk chemistry of rock - dissolution (water-soluble rocks) - chemical attack: - leaching - selective removal of ions - carbonic & other acids react with minerals - produce new minerals more stable in surface environment - function of surface area - large surface area, faster weathering Rates: vary with climate & rock type - for given mineral, rate function of temperature and environment of formation - high T igneous & metamorphic minerals weather faster - low T igneous, metamorphic & sedimentary minerals weather slowly. The Composition of
Marble and
Granite 1. marble A metamorphic rock composed largely of calcite. The metamorphic equivalent of limestone.
More resources:
Granite Stone
What color is your granite? Our granite products are carved from the traditional white/gray (salt & pepper) granite stone with black pigments unless noted (i.e. beige granite).
Granite Slab
Ornamental polished slabs of granite have wide applications ranging from use of monumental purposes, fencing, panelling and interior and exterior, skirting, mantels, windows sills, steps, concrete columns, kitchen sinks and bath tubs.