Ice sheets which cover about 10 percent of our Earth's land surface at present, were thought 20 years ago to be frozen wastelands, devoid of life and with supressed chemical weathering
- irrelevant parts of the carbon cycle.
Kaolin is a natural clay formed by the chemical weathering
of aluminum silicate minerals such as felspars through a complex sequence of events.
was evaluated using the chemical index of alteration (CIA).
The intense chemical weathering
is established by the high CIA (Chemical Index for Alteration) values.
plays a significant role in the effectiveness of agrominerals as fertilisers in agricultural practices (Harley and Gilkes 2000; Van Straaten 2006).
Plants play a major role in the chemical weathering
of continental rocks.
As on Earth, chemical weathering
and hydrothermal reactions can change minerals in rock from dry to water-bearing.
Li and Wu  performed X-ray diffraction (XRD) analysis on clay minerals and found that the chemical weathering
in this area was obvious, and significant development of clay minerals was observed in the weathered rock.
Over a period of time, this process - known as chemical weathering
- cooled the planet back down, and ushered in another ice age.
Bulk changes produced by weathering in granitic rocks have been studied by several methods, including chemical weathering
This process, called "chemical weathering
," effectively sends dissolved remnants of rocks--my time capsules--into the Fraser.
The effects of chemical weathering
of sedimentary rocks were described by Chigira and Oyama .