本文選題：碎屑礦物 + 石榴子石��； 參考：《海洋學(xué)報》2016年05期

【摘要】：基于南極普里茲灣海域33個表層碎屑沉積物樣品的碎屑礦物學(xué)分析,對該區(qū)的沉積環(huán)境與物質(zhì)來源進(jìn)行了分析。結(jié)果表明該區(qū)碎屑重礦物共17種,石榴子石、普通角閃石和磁鐵礦為優(yōu)勢礦物,紫蘇輝石和赤鐵礦為特征礦物。根據(jù)礦物組合分布特征,普里茲灣可劃分為4個礦物區(qū):Ⅰ區(qū)為石榴子石含量占絕對優(yōu)勢、重礦物含量較高的弗拉姆淺灘礦物區(qū);Ⅱ區(qū)為石榴子石、普通角閃石含量較高,磁鐵礦為特征礦物的普里茲水道礦物區(qū);Ⅲ區(qū)為紫蘇輝石含量較突出的四女士淺灘礦物區(qū);Ⅳ區(qū)為普通角閃石含量明顯突出,石榴子石顯著減少的深水陸坡礦物區(qū)。通過電子探針測試研究區(qū)石榴子石結(jié)果表明:碎屑石榴子石含有較高的Fe、Mg和較低的Ca、Mn,屬主要來源于高級麻粒巖相副變質(zhì)巖的A型石榴子石。普里茲灣海域的碎屑礦物分布特征是物質(zhì)來源、海流系統(tǒng)以及冰川活動等多重因素綜合作用的產(chǎn)物。
[Abstract]:Based on the clastic mineralogical analysis of 33 surface clastic sediment samples in Prydz Bay, Antarctica, the sedimentary environment and material sources in this area are analyzed. The results show that there are 17 kinds of clastic heavy minerals in this area. Pomegranate, common hornblende and magnetite are the dominant minerals, while perilla pyroxene and hematite are characteristic minerals. According to the distribution characteristics of mineral assemblages, Prydz Bay can be divided into four mineral regions: area I, where the content of pomegranate is the absolute dominant, and the Flamm shoal, where the content of heavy minerals is high, and the area 鈪，

本文編號：1949141