【摘要】 <正> 闽南—台湾浅滩大陆架位于东海与南海的交界处,是台湾海峡向开阔的南海的过渡区。调查范围界于116°00′—118°30′E,21°20′—24°00′N之间。本文对表层沉积物中的海绿石进行了研究,共分析样品76个。更多还原

【Abstract】 Glauconite in 76 bottom samples from this region was studied. Most of glauconite is in the cavities of foraminiferal tests, ostracod shells, molluscal shells and bryozan zooeeial chambers, but some are found in various forms of pellets and booklets. Most grains are brown-green, some are black, a few of them are yellow-green and light yellow.Glauconite distributes chiefly in the southwestern part of the area investigated. The highest content of glauconite is 35% of the total sediment from the station 10 (116°08’E 21°28’N).Our research shows that the well-sorted foraminiferal sands (2-0.063 mm) at a depth of 200-250 m and with a bottom temperature of 14-18 C, a salinity of 34.5-34.7‰, are favorable to the formation of glauconite as fillings of organisms.The parent materials of glauconite as fillings of organisms are micaceous clay fraction with a small amount of mineral fragments such as quartz. The light yellow glauconite is in the earliest stage glauconite as fillings of organisms.更多还原