秦皇島柳江盆地本溪組—下花園組層序地層研究
發(fā)布時(shí)間：2019-06-26 17:59
【摘要】：本文以柳江盆地為主要研究對象。在較全面收集華北地區(qū)、柳江盆地本溪組-下花園組地層的已有研究成果和各種地質(zhì)資料的基礎(chǔ)之上,進(jìn)行實(shí)地勘察測量、繪制剖面圖、磨制薄片、室內(nèi)鏡下分析和實(shí)驗(yàn)等。并且通過數(shù)字模擬軟件對研究區(qū)上本溪組-下花園組進(jìn)行地質(zhì)發(fā)展的演化進(jìn)行模擬。取得了以下主要成果:實(shí)地測量剖面2條,約3.5km。通過現(xiàn)場勘查,采樣制薄片,鏡下分析等可知,上古生界沉積主要以陸源碎屑巖為主,其中,本溪組含頁巖,夾灰?guī)r透鏡體,主要沉積環(huán)境為潮坪-o_湖沉積;太原組為頁巖、砂巖及灰?guī)r透鏡體,主要為潮平-o_湖-局限碳酸鹽臺地沉積;山西組由灰色頁巖、砂巖夾煤線組成,主要為三角洲沉積。中生界沉積主要以砂巖、礫巖為主,上三疊統(tǒng)杏石口組主要為砂巖、粉砂巖與泥巖互層,主要為砂質(zhì)辮狀河沉積。下侏羅統(tǒng)下花園組為砂巖夾礫巖夾煤線,含湖相沉積、砂質(zhì)辮狀河沉積;根據(jù)沉積相分析,采集古生物化石等對研究區(qū)史時(shí)期的古環(huán)境、古氣候進(jìn)行還原,其中石炭紀(jì)時(shí)期主要為溫暖潮濕的氣候,且經(jīng)歷過三次海泛;二疊紀(jì)時(shí)期為海濱沼澤環(huán)境,氣候溫暖潮濕;三疊紀(jì)期間地殼抬升,早、中三疊世氣候炎熱干旱。中三疊世晚期,炎熱干燥的氣候有所緩和;早侏羅世至中侏羅世早期,潮濕的氣候得到進(jìn)一步發(fā)展,中侏羅世晚期,本地區(qū)逐漸演變?yōu)榘霛駶?半干旱-干旱氣候。最后,通過分析、結(jié)合前人資料,對柳江盆地上古生界-中生界的地質(zhì)演化進(jìn)行模擬,并通過maya、AE等軟件實(shí)現(xiàn)恢復(fù)地質(zhì)歷史時(shí)期的陳基發(fā)展、構(gòu)造運(yùn)動。
[Abstract]:In this paper, Liujiang Basin as the main research object. On the basis of collecting the existing research results and various geological data of Benxi formation and Xiayuan formation in North China and Liujiang Basin, the field investigation and survey, the drawing of profile, the grinding of thin slices, the analysis and experiment under room endoscopy are carried out, and the results of field investigation and survey are carried out on the basis of the existing research results and various geological data of Benxi formation and Xiayuan formation in Liujiang Basin. The evolution of geological development of Shangbenxi formation and Xiayuan formation in the study area is simulated by digital simulation software. The main results are as follows: 2 profiles are measured in the field, about 3.5 km. Through field investigation, sampling thin slice and microscopic analysis, it can be seen that the Upper Paleozoic deposits are mainly terrestrial clastic rocks, in which Benxi formation contains shale and limestone lens, and the main sedimentary environment is Chaoping-o _ lake deposit, Taiyuan formation is shale, sandstone and limestone lens, mainly Chaoping-o _ lake-confined carbonate platform deposition. Shanxi formation is composed of grey shale and sandstone coal line, which is mainly deltaic deposit. The Mesozoic deposits are mainly sandstone and gravel, and the upper Triassic Xingshikou formation is mainly sandstone, siltstone and mudstone interbedded, mainly sandy braided river deposits. The Lower Jurassic Xiayuan formation is composed of sandstone with gravel coal line, lacustrine deposit and sandy braided river deposition. According to the analysis of sedimentary facies, the paleontological fossils were collected to restore the paleoclimate and paleoclimate in the historical period of the study area, in which the Permian period was mainly warm and humid climate, and experienced three times of sea flooding, and the Permian period was coastal swampy environment with warm and humid climate. During the Triassic period, the crust rose, early, and the climate of the Middle Triassic was hot and dry. In the late Middle Triassic, the hot and dry climate was moderate, and from the early Jurassic to the early Middle Jurassic, the humid climate was further developed, and in the late Middle Jurassic, the area gradually evolved into a semi-humid, semi-arid and arid climate. Finally, through the analysis and combined with the previous data, the geological evolution of the Upper Paleo-Mesogenetic realm in Liujiang Basin is simulated, and the Chen Ji development and tectonic movement in the geological history period are restored by maya,AE and other software.
【學(xué)位授予單位】：中國礦業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P539.2
本文編號：2506368
[Abstract]:In this paper, Liujiang Basin as the main research object. On the basis of collecting the existing research results and various geological data of Benxi formation and Xiayuan formation in North China and Liujiang Basin, the field investigation and survey, the drawing of profile, the grinding of thin slices, the analysis and experiment under room endoscopy are carried out, and the results of field investigation and survey are carried out on the basis of the existing research results and various geological data of Benxi formation and Xiayuan formation in Liujiang Basin. The evolution of geological development of Shangbenxi formation and Xiayuan formation in the study area is simulated by digital simulation software. The main results are as follows: 2 profiles are measured in the field, about 3.5 km. Through field investigation, sampling thin slice and microscopic analysis, it can be seen that the Upper Paleozoic deposits are mainly terrestrial clastic rocks, in which Benxi formation contains shale and limestone lens, and the main sedimentary environment is Chaoping-o _ lake deposit, Taiyuan formation is shale, sandstone and limestone lens, mainly Chaoping-o _ lake-confined carbonate platform deposition. Shanxi formation is composed of grey shale and sandstone coal line, which is mainly deltaic deposit. The Mesozoic deposits are mainly sandstone and gravel, and the upper Triassic Xingshikou formation is mainly sandstone, siltstone and mudstone interbedded, mainly sandy braided river deposits. The Lower Jurassic Xiayuan formation is composed of sandstone with gravel coal line, lacustrine deposit and sandy braided river deposition. According to the analysis of sedimentary facies, the paleontological fossils were collected to restore the paleoclimate and paleoclimate in the historical period of the study area, in which the Permian period was mainly warm and humid climate, and experienced three times of sea flooding, and the Permian period was coastal swampy environment with warm and humid climate. During the Triassic period, the crust rose, early, and the climate of the Middle Triassic was hot and dry. In the late Middle Triassic, the hot and dry climate was moderate, and from the early Jurassic to the early Middle Jurassic, the humid climate was further developed, and in the late Middle Jurassic, the area gradually evolved into a semi-humid, semi-arid and arid climate. Finally, through the analysis and combined with the previous data, the geological evolution of the Upper Paleo-Mesogenetic realm in Liujiang Basin is simulated, and the Chen Ji development and tectonic movement in the geological history period are restored by maya,AE and other software.
【學(xué)位授予單位】：中國礦業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P539.2
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