Sources and Composition of Marine Sediments

摘要: Marine sediments consist of deposits accumulating below the sea. They show great variety. There is debris from wearing down continents and volcanic mountains, shells derived organisms, organic matter, minerals precipitated seawater, there are products such as ash pumice. All matter transported in various ways, deposited, subsequently suffers diagenesis redeposition to degrees (Fig. 4.1). Terrigenous muds (with their tremendous fraction continental erosion products) make up well over one half total volume marine deposits. By area it deep-sea that dominant, with roughly deep seafloor covered by calcareous ooze – largely shell material coccolithophores foraminifers, along some reef many tropical margins. In contrast, extraterrestrial while interesting for its content information, negligible when considering abundance.