本文選題：有機(jī)碳 + 干酪根��； 參考：《湖泊科學(xué)》2017年05期

【摘要】：青海湖布哈河口區(qū)與晚三疊世鄂爾多斯盆地及四川盆地具有相似的古地理特征和水體環(huán)境,對布哈河口區(qū)表層沉積物中有機(jī)質(zhì)的類型和豐度進(jìn)行研究具有重要的比較沉積學(xué)意義.通過對布哈河口區(qū)河流、三角洲平原、前三角洲、濱湖、淺湖及半深湖環(huán)境表層沉積物樣品全巖組分、總有機(jī)碳(TOC)及有機(jī)質(zhì)類型進(jìn)行分析,確定布哈河口區(qū)表層沉積物中有機(jī)質(zhì)主要為Ⅱ2型和少量Ⅱ1型,TOC含量不超過4.29%,其中半深湖TOC含量最高并且有機(jī)質(zhì)類型較好.布哈河口區(qū)表層沉積物中TOC含量主要受黏土礦物含量、有機(jī)質(zhì)生產(chǎn)力和水深控制,半深湖沉積物具有較高的黏土礦物含量、較高的有機(jī)質(zhì)生產(chǎn)力、較好的有機(jī)質(zhì)類型和較大的覆水深度,有利于有機(jī)質(zhì)的生產(chǎn)和保存,為河口區(qū)最有利于烴源巖發(fā)育的環(huán)境.同時(shí),根據(jù)前三角洲、淺湖及半深湖沉積物中TOC含量與水深存在良好的相關(guān)性,建立了利用巖石中TOC含量對古水深進(jìn)行恢復(fù)的公式.
[Abstract]:The Buha River mouth area of Qinghai Lake has similar paleogeographic characteristics and water environment to the late Triassic Ordos Basin and Sichuan Basin. It is of great significance to study the types and abundance of organic matter in surface sediments of Buha River estuary. The total rock components, total organic carbon (TOC) and organic matter types of surface sediment samples in the environment of Buha River Estuary, delta plain, pre delta, littoral lake, shallow lake and semi deep lake were analyzed. It is determined that the content of organic matter in surface sediments of Buha River estuary is mainly type 鈪，

本文編號：1911557