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本文研究海域范围为115°00′,—119°00′E,20°00′—24°00′N,笔者研究该区碎屑矿物,共分析表层样品60个。 海绿石发现于150多年前,多数人认为海绿石是一种海相自生矿物,形成于稍呈碱性(pH=7—8)的正常盐度海水中,曾一度被视作鉴别海相地层的标志。然而,也有人在非海相沉积中发现过海绿石,但有人认为是从海相地层中带入的。随着科学研究逐步深入,60年代就有人用K-Ar比确定它的年龄,至今已积累不少资料,证实近代海洋中有两种沉积海绿石,即陆源他生海绿石和自生海绿石。近几年来,我国不少学者研
The study area of the sea area is 115 ° 00 ’, - 119 ° 00’E, 20 ° 00’-24 ° 00’N. The author studied the detrital minerals in this area and analyzed 60 surface samples. Glauconite was discovered more than 150 years ago and most people believe that glauconite is a marine authigenic mineral formed in a slightly alkaline (pH = 7-8) normal salinity seawater that was once considered as a distinguishing sea Phase strata sign. However, some people found glauconite in non-marine sediments, but some believe it is brought in from marine strata. With the gradual deepening of scientific research, some people used the K-Ar ratio in the 1960s to determine its age. So far, a lot of information has been accumulated, confirming that there are two kinds of sedimentary glauconites in the modern ocean, that is, terrestrial heliotropine and spontaneous sea green stone. In recent years, many Chinese scholars research