貴州大方地區(qū)構(gòu)造特征及構(gòu)造演化探討
發(fā)布時間：2018-07-21 15:37
【摘要】：大方位于貴州西北部,屬黔中隆起部分。區(qū)內(nèi)受多次構(gòu)造運動影響,區(qū)內(nèi)構(gòu)造類型齊全,樣式復雜。自中生代以來,板塊拼接和洋陸俯沖碰撞在區(qū)內(nèi)形成復雜的褶皺系統(tǒng)的斷裂體系。特別是自中生代揚子板塊和華南板塊碰撞拼合以來,區(qū)內(nèi)的構(gòu)造演化與揚子-華南板塊構(gòu)造演化密不可分。研究區(qū)內(nèi)的構(gòu)造對研究揚子-華南板塊的其他區(qū)域地質(zhì)構(gòu)造有著現(xiàn)實的科學意義。本文結(jié)合現(xiàn)代構(gòu)造地質(zhì)學、板塊構(gòu)造學說,通過野外地質(zhì)調(diào)查、室內(nèi)構(gòu)造解析等手段,綜合前人資料,對其幾何學和運動學進行研究,并探討其古構(gòu)造應力場和構(gòu)造演化,取得以下幾點認識:1、研究區(qū)構(gòu)造形跡多為北北東向和北東東向,大致沿“鼠場-雞場-林泉”為界,其北部構(gòu)造多為北北東向,一般規(guī)模較大,褶皺舒緩開闊,發(fā)育較多構(gòu)造穹窿。南部多為北東東向構(gòu)造,其排列緊密,規(guī)模一般不大,見有構(gòu)造盆地發(fā)育。2、研究區(qū)褶皺多由彎滑褶皺作用形成,其影響深度有限,為典型的薄皮構(gòu)造。斷層多為逆斷層,疊瓦扇式斷層組合較為常見,所以本區(qū)構(gòu)造系統(tǒng)應該是由逆沖推覆作用形成的。3、本區(qū)構(gòu)造格局的形成,主要受四個因素控制,一是受區(qū)域地質(zhì)構(gòu)造背景控制,其總體構(gòu)造走向與黔中隆起及其鄰區(qū)相同,其演化歷史基本一致;二是本區(qū)經(jīng)歷多期次、多性質(zhì)的構(gòu)造運動,構(gòu)造復合-聯(lián)合作用在本區(qū)表現(xiàn)的比較明顯;三是構(gòu)造還受巖石能干性的影響,褶皺多沿二疊系龍?zhí)督M泥巖、粉砂巖滑動。四是一定程度上受異�？紫秹毫τ绊�。4、燕山中期,受南北向擠壓應力,研究區(qū)形成一系列近東西向褶皺和斷層。燕山末期-喜山早期,研究區(qū)主要受到來自太平洋板塊和印度板塊的共同影響,形成一系列北北東向褶皺和斷裂,并疊加于早期北東東向褶皺之上,之后的構(gòu)造運動使研究區(qū)褶皺系統(tǒng)進一步壓緊、壓扁。
[Abstract]:Generous is located in the northwest of Guizhou, a part of central Guizhou uplift. The area is affected by multiple tectonic movements, the regional structure type is complete, the style is complex. Since the Mesozoic, plate splicing and oceanic subduction collide in the area to form a complex fault system of fold system. Especially since the Mesozoic Yangtze plate and South China plate collided together, the tectonic evolution in the area is closely related to the Yangtze-South China plate tectonic evolution. The tectonics in the study area are of practical scientific significance for the study of other regional geological structures of the Yangtze-South China plate. Combined with modern tectonics and plate tectonics, by means of field geological survey and indoor structural analysis, this paper studies its geometry and kinematics, and discusses its paleotectonic stress field and tectonic evolution. We have obtained the following knowledge: 1: 1. The structural features of the study area are mostly NNE and NW, roughly along the boundary of "rodent farm, chicken farm-Lin Quan," and the northern structures are mostly NNE, generally larger in scale, and generally more relaxed and open in fold. More structural fornix is developed. In the south, most of them are east-west structure, their arrangement is compact, and the scale is not large. There are tectonic basins developed .2. the folds in the study area are mostly formed by curve-slip folds, and their influence depth is limited, which is a typical thin-skinned structure. Most of the faults are reverse faults, and the imbricate fan type fault assemblage is more common. Therefore, the tectonic system in this area should be formed by thrusting and nappe. The formation of the tectonic framework in this area is mainly controlled by four factors, one is controlled by the regional geological tectonic background. Its overall tectonic trend is the same as that of the central Guizhou uplift and its adjacent areas, and its evolution history is basically the same. The third is that the structure is also affected by the rock activity, and the folds slide along the mudstone and siltstone of the Longtan formation of the Permian system. The fourth is influenced by abnormal pore pressure to some extent, and a series of near-east-west folds and faults are formed in the study area during the middle Yanshanian period and under the compression stress of the north-south direction. From the late Yanshanian to the early Himalayan, the study area was mainly influenced by the Pacific plate and the Indian plate, forming a series of NNE folds and faults, which were superimposed on the early east-west fold. The subsequent tectonic movement further compacted and flattened the fold system in the study area.
【學位授予單位】：成都理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：P542
本文編號：2135983
[Abstract]:Generous is located in the northwest of Guizhou, a part of central Guizhou uplift. The area is affected by multiple tectonic movements, the regional structure type is complete, the style is complex. Since the Mesozoic, plate splicing and oceanic subduction collide in the area to form a complex fault system of fold system. Especially since the Mesozoic Yangtze plate and South China plate collided together, the tectonic evolution in the area is closely related to the Yangtze-South China plate tectonic evolution. The tectonics in the study area are of practical scientific significance for the study of other regional geological structures of the Yangtze-South China plate. Combined with modern tectonics and plate tectonics, by means of field geological survey and indoor structural analysis, this paper studies its geometry and kinematics, and discusses its paleotectonic stress field and tectonic evolution. We have obtained the following knowledge: 1: 1. The structural features of the study area are mostly NNE and NW, roughly along the boundary of "rodent farm, chicken farm-Lin Quan," and the northern structures are mostly NNE, generally larger in scale, and generally more relaxed and open in fold. More structural fornix is developed. In the south, most of them are east-west structure, their arrangement is compact, and the scale is not large. There are tectonic basins developed .2. the folds in the study area are mostly formed by curve-slip folds, and their influence depth is limited, which is a typical thin-skinned structure. Most of the faults are reverse faults, and the imbricate fan type fault assemblage is more common. Therefore, the tectonic system in this area should be formed by thrusting and nappe. The formation of the tectonic framework in this area is mainly controlled by four factors, one is controlled by the regional geological tectonic background. Its overall tectonic trend is the same as that of the central Guizhou uplift and its adjacent areas, and its evolution history is basically the same. The third is that the structure is also affected by the rock activity, and the folds slide along the mudstone and siltstone of the Longtan formation of the Permian system. The fourth is influenced by abnormal pore pressure to some extent, and a series of near-east-west folds and faults are formed in the study area during the middle Yanshanian period and under the compression stress of the north-south direction. From the late Yanshanian to the early Himalayan, the study area was mainly influenced by the Pacific plate and the Indian plate, forming a series of NNE folds and faults, which were superimposed on the early east-west fold. The subsequent tectonic movement further compacted and flattened the fold system in the study area.
【學位授予單位】：成都理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：P542
【參考文獻】
相關期刊論文 前10條
1 王德富;陶曉風;姚金鵬;;區(qū)域性構(gòu)造節(jié)理在遙感影像上的反映特征——以黔西北地區(qū)為例[J];四川建材;2015年06期
2 包漢勇;郭戰(zhàn)峰;張羅磊;黃亞平;;太平洋板塊形成以來的中國東部構(gòu)造動力學背景[J];地球科學進展;2013年03期
3 鄧新;楊坤光;劉彥良;佘振兵;;黔中隆起性質(zhì)及其構(gòu)造演化[J];地學前緣;2010年03期
4 秦守榮;張明發(fā);龔梅;況忠;;貴州的印支運動[J];沉積與特提斯地質(zhì);2009年02期
5 陳學敏;;論貴州西部扭動構(gòu)造[J];貴州地質(zhì);2009年01期
6 董樹文;張岳橋;陳宣華;龍長興;王濤;楊振宇;胡健民;;晚侏羅世東亞多向匯聚構(gòu)造體系的形成與變形特征[J];地球?qū)W報;2008年03期
7 董樹文;張岳橋;龍長興;楊振宇;季強;王濤;胡建民;陳宣華;;中國侏羅紀構(gòu)造變革與燕山運動新詮釋[J];地質(zhì)學報;2007年11期
8 牛新生;馮常茂;劉進;;黔中隆起的形成時間及形成機制探討[J];海相油氣地質(zhì);2007年02期
9 王尚彥;張慧;王天華;王純厚;彭成龍;胡仁發(fā);陳明華;石磊;;黔西水城—紫云地區(qū)晚古生代裂陷槽盆充填和演化[J];地質(zhì)通報;2006年03期
10 何熙琦,肖加飛,王尚彥,劉愛民,黎超,白平;黔中隆起研究[J];貴州地質(zhì);2005年02期
相關碩士學位論文 前1條
1 樓達;黔中隆起及其周緣復雜褶皺—逆沖推覆構(gòu)造及其動力學[D];中國海洋大學;2008年
，本文編號：2135983
本文鏈接：http://sikaile.net/kejilunwen/diqiudizhi/2135983.html
最近更新
教材專著
