Table 1. The geological classes and the lithologies included in each class.
Geology Class | Included Lithologies |
Ultramafic: magnesium rich alkaline rock. | Serpentine, soapstone, pyroxenite, dunite, peridotite, talc schist |
Mafic: quartz poor alkaline to slightly acidic rock. | Anorthosite, gabbro, diabase, basalt, diorite, andesite, syenite, trachyte, Metamorphic equivalents: Greenstone, amphibolites, epidiorite, granulite, bostonite, essexite |
Acidic Granitic: quartz rich, acidic igneous and metamorphic rock. | Granite, granodiorite, rhyolite, felsite, pegmatite, Metamorphic equivalents: Granitic gneiss, charnocktites, migmatites |
Acidic Sedimentary: fine to coarse grained, acidic sedimentary rock. | Mudstone, claystone, siltstone, Non-fissile shale, sandstone, breccia, conglomerate, greywacke, arenites, Metamorphic equivalents: slate, phyllite, pelite, schist, pelitic schist, granofel, quartzite |
Acidic Shale: fine grained acidic sedimentary rock with fissile texture. | Fissile shale |
Calcareous Sedimentary: Alkaline, soft sedimentary rock with high calcium content. | Limestone, dolomite, dolostone, other carbonate-rich clastic rocks, Metamorphic equivalents: Marble |
Moderately Calcareous Sedimentary: Neutral sedimentary rock with some calcium. | Calcareous shale and sandstone, calc-silicate granofel, Metamorphic equivalents: calcareous schists and phyllite |
Fine Sediment: fine-grained surficial sediments. | Unconsolidated mud, clay, drift, ancient lake deposits |
Coarse Sediment: coarse-grained surficial sediments. | Unconsolidated sand, gravel, pebble, till. |
The first eight are bedrock classes, and the last two are surficial classes.