The investigated Barail sandstones are chemically mature as indicated by the ICV while the ratio of SiO 2/Al 2O 3 indicated moderate sediment maturity. Thin section photomicrographs of rocks of the Simpson Group from the Mazur well: 5. Partial ternary diagram showing composition of sandstones of the Simpson Group from the Mazur well determined using point-count analysis H8 5-6. The A-CN-K diagram and weathering indices such as CIA, PIA shows moderate to intense weathering in the source area. Ternary diagram showing mineral composition and lithology for samples of the Simpson Group from the Mazur well H4 4. The sediments are also found to be derived from recycled sedimentary rock which is proved by ratios of Zr/Sc and Th/U. Most plot compositional data on ternary diagrams, with quartz, feldspar and lithic fragments as the polesreferred to as QFL diagrams. However, the many classifications typically share a few common characteristics. Like the QFL diagram, this ternary graph uses the specifications published in 1983 by Dickinson. Others focus exclusively on composition, although some provide separate terms to describe textures. Qm is monocrystalline quartz, F is feldspar, and Lt is total lithics. The binary diagram between ratios of Zr/Sc vs. This diagram is used like the QFL diagram, but it is designed for provenance studies of sandstones that contain a lot of chert or polycrystalline quartz (quartzite) grains. Similarly, the high LREE/HREE ratios and negative Eu anomaly (La/Lu) cn, ratios of Eu/Eu*, La/Sc, La/Co, Cr/Th, Th/Sc, Th/Co and Cr/V ratio indicate felsic source. The ratio of Al 2O 3/TiO 2 and the ternary diagram of La-Th-Sc indicate felsic to intermediate source. The Chondrite normalised REE pattern show similar pattern to UCC (Taylor and McLennan 1985) with an enrichment of LREE and depletion of HREE. The geochemical characteristics of the rock are plotted in various binary and ternary diagrams and selected ratios of elements are interpreted in the light of source rock characteristics. log(Fe 2O 3/K 2O) of the Barail sandstones indicated that the sandstones belong to litharenite and wacke. log(Na 2O/K 2O) and log(SiO 2/Al 2O 3) vs.
SANDSTONE TERNARY DIAGRAM SOFTWARE
Ordinary ternary diagram plotting software is unable to plot these diagrams as the parameters on the three axes do not sum to 1. The geochemical classification based on diagrams of log(SiO 2/Al 2O 3) vs. triangular diagram This spreadsheet plots triangular (ternary) diagrams for the representation of particle shape following the method recommended by Benn and Ballantyne (1993) and first proposed by Sneed and Folk (1958). The significance of the work is that it will uncover and reconstruct origin of Barail sandstone and restore the tectonic and paleoclimatic conditions based on petrography and geochemistry of the sandstone. The Oligocene age of Barail group of sedimentary rocks, exposed near the Indo Myanmar mobile belt, i.e., Champhai area, Mizoram have been studied to infer the provenance and paleoweathering history. Mizoram is geologically young comprising entirely of sedimentary rocks.
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