本文關(guān)鍵詞： 東沙隆起 珠江組 微相 相模式　出處：《成都理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：位于南海北部的珠江口盆地所發(fā)育的下中新統(tǒng)珠江組碳酸鹽巖是我國(guó)海相碳酸鹽巖的最高層位,它記錄了新近紀(jì)以來(lái)南中國(guó)海氣候變化、生物演化、海平面升降和構(gòu)造沉降等豐富的地質(zhì)信息。前人對(duì)下中新統(tǒng)珠江組的研究主要集中在流花、陸豐、白云凹陷等地區(qū)的碳酸鹽巖上段,這是因?yàn)檫@些地區(qū)鉆井資料相對(duì)豐富,而且大量的鉆井取心均來(lái)自碳酸鹽巖上部,為研究碳酸鹽巖的礦物學(xué)、巖石學(xué)和沉積微相提供了實(shí)物資料。而碳酸鹽巖下段的地層因?yàn)閷?shí)物資料的相對(duì)欠缺,研究較少,這制約了人們對(duì)珠江組沉積環(huán)境和沉積演化規(guī)律的客觀科學(xué)認(rèn)識(shí)。因此本文依托國(guó)家“十二.五”重大專項(xiàng)海洋深水區(qū)油氣勘探關(guān)鍵技術(shù)子課題《南海北部深水區(qū)碳酸鹽巖儲(chǔ)層識(shí)別技術(shù)與評(píng)價(jià)》,以中海油深圳分公司近年在東沙隆起惠州地區(qū)實(shí)施的HZ28-1-1等5口鉆井的巖心、巖屑、錄井和測(cè)井資料為第一手資料,綜合運(yùn)用沉積地質(zhì)學(xué)、古生物地層學(xué)、巖相古地理和地球物理測(cè)井基礎(chǔ)原理等理論和方法,對(duì)珠江組下段碳酸鹽巖的礦物學(xué)、巖石學(xué)、古生物、測(cè)井響應(yīng)特征和沉積微相進(jìn)行詳細(xì)研究,取得如下認(rèn)識(shí):1.根據(jù)研究區(qū)274塊薄片的礦物學(xué)、巖石學(xué)和古生物的研究結(jié)果,在東沙隆起惠州地區(qū)珠江組下段識(shí)別出了粉砂質(zhì)泥質(zhì)巖、有孔蟲泥粒巖、有孔蟲屑藻屑泥粒巖、生物碎屑泥�；�?guī)r、含生物碎屑粒泥灰?guī)r、生物碎屑粒泥灰?guī)r、含內(nèi)碎屑藻屑泥粒巖、藻灰?guī)r和藻粘結(jié)巖等9種沉積微相類型;根據(jù)這些沉積微相對(duì)環(huán)境的指示,惠州地區(qū)珠江組下段碳酸鹽巖屬于混積陸棚、緩坡、臺(tái)地邊緣和淺水陸棚4種沉積環(huán)境的產(chǎn)物。2.基于對(duì)珠江組碳酸鹽巖下段微相和沉積相的研究,初步分析了珠江組碳酸鹽巖下段沉積可以分為4個(gè)期次。第I期:隨著海平面的上升,陸源碎屑注入的減少,整個(gè)東沙臺(tái)地為混積陸棚環(huán)境,混積沉積主要集中在研究區(qū)的東部,而惠州地區(qū)則為碳酸鹽巖陸棚的泥微晶灰?guī)r沉積;第II期:由于海平面的下降,之前的混積陸棚演變?yōu)樘妓猁}巖緩坡,惠州地區(qū)處于緩坡的高能相帶,沉積物質(zhì)以含珊瑚藻屑泥粒巖和白云石藻屑有孔蟲泥粒巖為主;第III期:中中新世中期,東沙隆起由碳酸鹽巖緩坡演變?yōu)樘妓猁}巖臺(tái)地,惠州地區(qū)由之前的緩坡高能相帶演變?yōu)榕_(tái)地邊緣的礁灘相帶,沉積物質(zhì)以藻屑有孔蟲屑泥粒巖、珊瑚藻屑泥粒巖和有孔蟲珊瑚藻屑泥粒巖為主;第IV期:碳酸鹽產(chǎn)率跟蹤相對(duì)海平面上升,臺(tái)地邊緣規(guī)模進(jìn)一步擴(kuò)大,在惠州東部呈條帶狀分布,沉積物質(zhì)以珊瑚藻屑泥粒巖為主。
[Abstract]:The carbonate rock of the Lower Miocene Pearl River formation developed in the Pearl River mouth basin in the northern part of the South China Sea is the highest layer of marine carbonate rocks in China. It records the climate change and biological evolution of the South China Sea since the Neogene. The previous studies of the Pearl River formation of the Lower Miocene are mainly focused on the upper carbonate rocks in Liuhua, Lufeng, Baiyun Sag and other areas, because these areas are relatively rich in drilling data. Moreover, a large amount of drilling coring comes from the upper part of carbonate rock, which provides material data for the study of mineralogy, petrology and sedimentary microfacies of carbonate rock. This restricts the objective scientific understanding of the sedimentary environment and sedimentary evolution law of the Pearl River formation. Therefore, this paper relies on the key technology of oil and gas exploration in the deep sea area of China's 12 Five-Year Plan < Deep Water in the North of the South China Sea. Identification Technology and Evaluation of Carbonate Reservoir in the area. Core of HZ28-1-1 and other drilling wells implemented by CNOOC Shenzhen Branch in Huizhou area of Dongsha uplift in recent years, According to the theories and methods of sedimentary geology, paleontological stratigraphy, lithofacies paleogeography and geophysical logging, the mineralogy and petrology of carbonate rocks in the lower part of the Pearl River formation are studied. Paleontology, logging response characteristics and sedimentary microfacies were studied in detail, and the following understandings were obtained: 1.According to the mineralogical, petrological and paleontological results of 274 thin slices in the study area, Silty mudstone, foraminiferal mudstone, foraminiferal dregs, bioclastic mudstone, bioclastic marl, bioclastic marl, bioclastic marlite have been identified in the lower member of the Pearl River formation in Huizhou area, Dongsha uplift. According to the indication of these sedimentary microenvironments, carbonate rocks in the lower member of Zhujiang formation in Huizhou area belong to mixed continental shelf and gentle slope. The products of four sedimentary environments of platform margin and shallow shelf. 2. Based on the study of the microfacies and sedimentary facies of the Lower Carbonate member of the Pearl River formation, The sediments of the lower carbonate rocks of the Pearl River formation can be divided into four stages. Phase I: with the rise of sea level and the decrease of the injection of terrigenous debris, the whole Dongsha platform is a mixed continental shelf environment. The mixed deposits are mainly concentrated in the eastern part of the study area, while the Huizhou area is the mud microcrystalline limestone deposit of the carbonate shelf, the second stage: because of the sea level drop, the former mixed shelf evolved into the carbonate rock gentle slope. Huizhou area is located in the high-energy facies belt of gentle slope, the sedimentary material is mainly composed of coral-bearing algal dregs and dolomite algal debris foraminiferal mudstone, and the III stage: in the middle Miocene, the Dongsha uplift evolved from carbonate rock gentle slope to carbonate platform. Huizhou area changed from the gentle slope high-energy facies belt to the reef shoal facies zone on the platform margin. The sedimentary materials are algal debris foraminiferal mudstone coral algal debris mudstone and foraminiferal algae-dreglite. Stage IV: carbonate yield tracked relative sea level rise, the scale of platform margin further expanded, distributed in the eastern part of Huizhou, the sedimentary material was mainly coral algal mudstone.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P588.245;P618.13

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 邵磊,李獻(xiàn)華,汪品先,翦知nc,韋剛健,龐雄,劉穎;南海漸新世以來(lái)構(gòu)造演化的沉積記錄——ODP1148站深海沉積物中的證據(jù)[J];地球科學(xué)進(jìn)展;2004年04期

2 孫珍,龐雄,鐘志洪,周蒂,陳長(zhǎng)民,郝滬軍,何敏,黃春菊,許鶴華;珠江口盆地白云凹陷新生代構(gòu)造演化動(dòng)力學(xué)[J];地學(xué)前緣;2005年04期

3 李云;鄭榮才;朱國(guó)金;李小平;陳淑慧;胡曉慶;;珠江口盆地白云凹陷中新統(tǒng)珠江組深水灰?guī)r沉積-成巖作用特征[J];地學(xué)前緣;2014年02期

4 朱偉林;珠江口盆地中新世碳酸鹽巖及生物礁相研究[J];海洋地質(zhì)與第四紀(jì)地質(zhì);1987年02期

5 陳驥;傅恒;劉雁婷;汪瑞良;;珠江口盆地東沙隆起珠江組沉積環(huán)境及演化[J];石油天然氣學(xué)報(bào);2011年02期

6 李小平;施和生;杜家元;張忠濤;郝建光;;珠江口盆地番禺低隆起東部珠江組沉積環(huán)境的恢復(fù)[J];海相油氣地質(zhì);2015年01期

7 李云;鄭榮才;朱國(guó)金;胡曉慶;;珠江口盆地白云凹陷珠江組深水牽引流沉積特征及其地質(zhì)意義[J];海洋學(xué)報(bào)(中文版);2012年01期

8 岳大力;吳勝和;林承焰;王慶如;衡立群;李燕;;流花11-1油田礁灰?guī)r油藏沉積-成巖演化模式[J];石油與天然氣地質(zhì);2005年04期

9 邵磊,雷永昌,龐雄,施和生;珠江口盆地構(gòu)造演化及對(duì)沉積環(huán)境的控制作用[J];同濟(jì)大學(xué)學(xué)報(bào)(自然科學(xué)版);2005年09期

10 李云;鄭榮才;高博禹;胡曉慶;戴朝成;;珠江口盆地白云凹陷漸新世/中新世地質(zhì)事件的碎屑組分響應(yīng)[J];現(xiàn)代地質(zhì);2011年03期

相關(guān)碩士學(xué)位論文 前2條

1 高憲偉;應(yīng)用測(cè)井資料定量識(shí)別碳酸鹽巖沉積微相的方法研究[D];成都理工大學(xué);2013年

2 趙杰;珠江口盆地東部中新統(tǒng)珠江組碳酸鹽巖結(jié)構(gòu)與成巖作用[D];成都理工大學(xué);2013年

，

本文編號(hào)：1548024