Other stuff from the book

wisonsinian glaciation

canada

most of western region of america

antarcatica

path of rising magma

native rock melted and consumed into rising magma or broken into peieces that settle into the magma in a process known as stoping

anothrita is calcium rich plagioclase, oligoclaseis sodium-rich plagioclase

accompanying process to lithificaiton and is a low-temperature form of rock metamorphism

determined by analyzing mineral composition and type sof fossils present; important for describing tectonic history and paloegraphic fomraitons

sandstone is medium granied and arenite is well sorted snadstone

sandstone with a muddy matrix or one with many rock pieces (lithic fragments)

can be separated into thin sheets, aka shale

term for rocks made of sediment grains smaller than sand (less than 2 mm)

claystone or siltstone

sand-rich rock containing minor amounts of clay

salts ( evaporites)

calcium-carbonate saturade water precipitates porous masses of clacite called tufaC

produced from silica precipiated from groundwater

when water is oversaturated with caclite, the mineral precipitates out around a nucleus, a sand grain o shell fragment, and forms little sphere called ooids - ooids continue buliding concnetric layers of calcite as they roll around in gentle currents

fizzing = calcite recatis with HCl

microscopic calcite mud

study of seiimentary layreing

planes that separate the layers of strata in sedimentary and some volcanic rocks

a layer thinner than 1 cm