This current book discusses the formation, distribution and environmental impacts of marine sediments. The first chapter describes the isolation, taxonomic approach, diversity, secondary metabolites and activities of actinobacteria. Chapter Two aims at the verification of anisotropy of magnetic susceptibility (AMS) usability as a textural indicator of rocks, with special emphasis on origin of fluid pathway within tight turbidite sandstones burying a foreland basin. The final chapter reviews aluminum impact on the growth of benthic diatom.