GEOL 1100 Lecture Notes - Clastic Rock, Gypsum, Breccia
Document Summary
3. lithification unconsolidated sediments transformed into solid sedimentary rock a. lithified by compaction (weight of overlying materials compresses deeper sediments) and cementation (soluble cementing materials like calcite, silica and iron oxide are sediments grains, fill open spaces and join: principle sources, detrital material solid particles from mechanical and chemical weathering, form detrital sedimentary rocks a, sandstone, conglomerate (rounded, gravel size particles. Greater than 2 mm: breccia (angular, gravel sized particles, soluble materials produced largely by chemical weathering (when precipitated, forms chemical sedimentary rocks, organic sedimentary rocks coal= primary example. Two basic sizes of sedimentary rocks: detrital (clastic) sedimentary rocks both are composed of particles greater than 2 mm in diameter, conglomerate consists largely of rounded gravels (shows that they were transported a long way, breccia composed mainly of large angular particles (angular pieces show it was transported far from the origin, chemical sedimentary rocks consists of precipitated material that was once in a solution, precipitation of material occurs by.
