Siliciclastic rocks (commonly misspelled
siliclastic) are
clastic non
carbonate sedimentary rocks that are almost exclusively
silica-bearing, either as forms of
quartz or other
silicate minerals. All siliciclastic rocks are formed by inorganic processes, or deposited through some mechanical process, such as stream deposits (delta deposits) that are subsequently
lithified. They are
sandstone based rocks accounting for about 50 - 60% of the world oil and gas exploration.The other silicate minerals that are generally present in siliciclastic sedimentary rocks are feldspar, biotite etc....