Premium
WEATHERING STAGES OF THE COMMON IGNEOUS ROCKS, INDEX MINERALS AND MINERAL ASSEMBLAGES AT THE SURFACE OF THE EARTH
Author(s) -
CHESWORTH WARD
Publication year - 1977
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1977.tb02257.x
Subject(s) - weathering , igneous rock , metamorphic rock , mineral , geology , geochemistry , facies , earth (classical element) , mineralogy , earth science , geomorphology , chemistry , mathematics , organic chemistry , structural basin , mathematical physics
Summary The system SiO2 ‐AlOOH‐Fe2 O3 ‐H2 O is used to show certain short‐comings in the use of single minerals to index weathering stages. An alternative (analogous to the metamorphic facies concept) is proposed in which three stages are recognized, one of which can already be defined in terms of mineral assemblages, while the two earlier stages should eventually prove open to this treatment.