How Does Chert Form - Web chert is a biochemical sedimentary rock made from microcrystalline quartz. Web chert and flint occur as individual nodules or layers of nodules in limestone or dolomite; They are common in rocks of all ages.
They are common in rocks of all ages. Web chert and flint occur as individual nodules or layers of nodules in limestone or dolomite; Web chert is a biochemical sedimentary rock made from microcrystalline quartz.