In tropical areas , rocks are exposed to meteoric alteration ,resultingin an assemblage of clay minerals , iron and manganese oxides
the sampleswere composedof carbon microparticles and iron oxide nanoparticles
Preserved matrix cementis ... composedof iron oxides / hydroxides and clay minerals
These cracks are less than .05 mm in width and mostlyis ... composedof iron oxides / hydroxides and clay minerals
The chemical weathering of carbonate minerals and the geochemical behavior of Hg in the epigenetic environmentresultin Hg enrichment by ferric oxides , iron hydroxide and organic carbon in limestone soils
layered veneercomposedof clay minerals cemented together by oxides and hydroxides of manganese and iron
These sandstone canyon walls ... desert varnishis composedof clay minerals , oxides and hydroxides of manganese and iron
a thin , dark coatingcomposedof clay , minerals , oxides and hydroxides of manganese and iron
the thin reddish / black coating ,composedof clay minerals , oxides and manganese and/or iron
to stabilization of organic carbon in soilscontributingto stabilization of organic carbon in soils
These aggregation indices(passive) are influenced byThese aggregation indices
from chemical and biological alteration processesresultedfrom chemical and biological alteration processes
the accumulation and stabilisation of organic carbon in soilsinfluencesthe accumulation and stabilisation of organic carbon in soils
to the retention of Cd in non - mobile or unavailable forms ( Sposito and Page , 1985may contributeto the retention of Cd in non - mobile or unavailable forms ( Sposito and Page , 1985
These green sands(passive) are composedThese green sands
from the soiloriginatefrom the soil
Desert varnish(passive) is composedDesert varnish
taste , odor , color and fixture staining complaints for decadeshad causedtaste , odor , color and fixture staining complaints for decades