本文選題：四川盆地 + 峨邊縣��； 參考：《礦物巖石地球化學(xué)通報(bào)》2017年03期

【摘要】：為探討川西峨邊地區(qū)震旦系燈影組三段泥頁(yè)巖沉積期氧化還原特征及構(gòu)造-沉積背景,對(duì)其開(kāi)展了礦物學(xué)、元素地球化學(xué)及同位素地球化學(xué)系統(tǒng)研究。結(jié)果表明,燈三段泥頁(yè)巖硅、鋁及鉀元素富集,沉積期間氣候溫暖潮濕、受淡水及陸源物質(zhì)影響明顯。藍(lán)灰色泥巖屬氧化環(huán)境,為桐灣I幕運(yùn)動(dòng)地殼抬升剝蝕及局部火山作用的產(chǎn)物,物源以正常沉積為主、夾前震旦基底花崗斑巖;灰黑色頁(yè)巖與拉張裂陷作用導(dǎo)致的海平面上升相關(guān),屬正常沉積物源供給的貧氧環(huán)境。裂陷槽西側(cè)峨邊地區(qū)桐灣I幕構(gòu)造運(yùn)動(dòng)表現(xiàn)為早期剝蝕、后期快速海侵充填特征。
[Abstract]:In order to study the redox characteristics and tectonic-sedimentary background of the third member of the Dengying formation of the Sinian system in Ebian area western Sichuan the mineralogical elemental geochemistry and isotopic geochemical systems were studied. The results show that Si, Al and K are enriched in the third stage of Liangshan shale, and the climate is warm and humid during the deposition period, which is obviously influenced by fresh water and land-based materials. The blue-gray mudstone belongs to the oxidation environment and is the product of crustal uplift and denudation and local volcanism of the Tongwan I episode movement. The provenance is dominated by normal deposition and the pre-Sinian basement granitic porphyry. The grey and black shale is related to the sea level rise caused by tension rifting and belongs to the oxygen-poor environment supplied by the normal sediment source. The tectonics of Tongwan I in Ebian area on the west side of the rift trough is characterized by early denudation and rapid transgression and filling.
【作者單位】： 西南石油大學(xué)地球科學(xué)與技術(shù)學(xué)院;四川省都江堰勘測(cè)設(shè)計(jì)院;
【基金】：國(guó)家自然科學(xué)基金青年基金項(xiàng)目(41202109) 四川省創(chuàng)新創(chuàng)業(yè)訓(xùn)練項(xiàng)目(201610615054) 西南石油大學(xué)啟航項(xiàng)目(2015QHZ028)
【分類號(hào)】：P534.31;P618.13

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陳孝紅,王傳尚,陳立德;峽東宜昌四溪震旦系燈影組多重地層劃分[J];華南地質(zhì)與礦產(chǎn);2001年03期

2 薛耀松,唐天福,俞從流;中國(guó)南方上震旦統(tǒng)燈影組中的古喀斯特洞穴磷塊巖[J];沉積學(xué)報(bào);1992年03期

3 劉早學(xué);張焱林;陳鐵龍;周向輝;;湘鄂西壺瓶山—走馬地區(qū)燈影組儲(chǔ)層特征[J];地質(zhì)通報(bào);2012年11期

4 劉懷仁;劉明星;胡登新;付強(qiáng);;川西南上震旦統(tǒng)燈影組沉積期的暴露標(biāo)志及其意義[J];巖相古地理;1991年05期

5 李勁楓;楊宏偉;;江山震旦系燈影組地質(zhì)特征分析[J];硅谷;2013年08期

6 劉懷仁 ,劉明星;川西南上震旦統(tǒng)燈影組的研究取得重要進(jìn)展[J];四川地質(zhì)學(xué)報(bào);1991年04期

7 劉新民;郭戰(zhàn)峰;付宜興;李志祥;;神農(nóng)架地區(qū)燈影組儲(chǔ)層成巖作用研究[J];資源環(huán)境與工程;2007年03期

8 王鵬萬(wàn);陳子p，

本文編號(hào)：1864364