本文選題：黃河口凹陷 + 古近系　； 參考：《中國(guó)地質(zhì)大學(xué)（北京）》2014年碩士論文

【摘要】：本文以層序地層學(xué)、地震沉積學(xué)、地震地貌學(xué)為理論依據(jù)，綜合利用鉆井、測(cè)井、地震數(shù)據(jù)，結(jié)合前人的研究成果，重點(diǎn)對(duì)黃河口凹陷古近系溝谷的發(fā)育特征及其對(duì)沉積體系展布的控制作用展開(kāi)分析。 在前人研究的基礎(chǔ)上，充分利用工區(qū)內(nèi)的三維地震數(shù)據(jù)資料，尤其是新獲得的西南斜坡帶BZ31-32工區(qū)的三維地震數(shù)據(jù)資料，以及鉆井、測(cè)井?dāng)?shù)據(jù)，對(duì)工區(qū)的各個(gè)三級(jí)層序界面進(jìn)行了劃分識(shí)別，并分別總結(jié)出其界面特征，通過(guò)單井分析、聯(lián)井對(duì)比分析，井震結(jié)合等方法，建立了黃河口凹陷古近系層序地層格架。在研究區(qū)古近系共識(shí)別出3個(gè)二級(jí)層序，8個(gè)三級(jí)層序，9個(gè)三級(jí)層序界面。 結(jié)合地震剖面、地層厚度圖以及古地貌圖，，在黃河口凹陷古近系按幾何形態(tài)特征分為三種類(lèi)型，即U型溝谷、V型溝谷和W型溝谷；按成因特征分類(lèi)分為沉積成因型和構(gòu)造成因型兩種，又將構(gòu)造成因型細(xì)分為單斷槽型、雙斷槽型、構(gòu)造樞紐帶型、多階斷層型和走滑斷層伴生型五種類(lèi)型。同時(shí)結(jié)合工區(qū)的構(gòu)造演化運(yùn)動(dòng)，明確了沉積成因型和構(gòu)造成因型兩種類(lèi)型的成因機(jī)制，探討了整個(gè)研究區(qū)在不同層序發(fā)育時(shí)期溝谷的分布特征。 在此基礎(chǔ)上，分析了黃河口凹陷古近系溝谷對(duì)物源輸送以及沉積體系展布的控制作用。認(rèn)為沉積成因型溝谷剝蝕時(shí)供給物源，沉積時(shí)是沉積物的堆積場(chǎng)所；構(gòu)造成因型溝谷則主要作為溝通物源區(qū)與沉積中心的輸送通道而存在，也可以作為少量的沉積區(qū)域。在分析不同層序發(fā)育時(shí)期溝谷發(fā)育對(duì)沉積體系展布的影響時(shí)，得出由于南北地形特征的不同，沉積體系的發(fā)育也不相同。北部陡坡處，沉積物通過(guò)溝谷快速堆積，多發(fā)育扇三角洲；而南部緩坡，大量流水帶著沉積物順著溝谷方向沉積，多發(fā)育為辮狀河三角洲。
[Abstract]:Based on sequence stratigraphy, seismic sedimentology and seismic geomorphology, this paper synthetically uses drilling, logging, seismic data and previous research results. The development characteristics of Paleogene gully and its controlling effect on the distribution of sedimentary system in Huanghekou depression are analyzed. On the basis of previous studies, we make full use of the 3D seismic data in the working area, especially the newly acquired 3D seismic data of the BZ31-32 working area in the southwest slope zone, as well as the drilling and logging data. The third order sequence interface of the working area is divided and identified, and its interface characteristics are summarized respectively. By means of single well analysis, well correlation analysis and well shock combination, the Paleogene sequence stratigraphic framework of Huanghou depression is established. Three secondary sequences, eight third-order sequences and nine third-order sequence interfaces were identified in the Paleogene in the study area. Combined with seismic profile, stratigraphic thickness map and paleogeomorphic map, Paleogene in Huanghekou depression can be divided into three types according to their geometric characteristics: U type gully, V type gully and W type gully. According to the genetic characteristics, it can be divided into two types: sedimentary genetic type and tectonic genetic type. The tectonic genetic type is divided into five types: single faulted trough type, double fault trough type, structural hinge zone type, multi-order fault type and strike-slip fault associated type. At the same time, combined with the tectonic evolution of the work area, the genetic mechanism of the sedimentary and tectonic genetic types is clarified, and the distribution characteristics of the gully in the different sequence development period of the whole study area are discussed. On this basis, the control effect of Paleogene gully on provenance transportation and distribution of sedimentary system in Huanghekou sag is analyzed. It is considered that the source of supply during denudation of the sedimentary type gully is the accumulation place of the sediment, while the tectonic type valley exists mainly as the transport channel between the source area and the center of the deposit, and can also be used as a small amount of sedimentary area. In the analysis of the influence of gully development on the distribution of sedimentary system in different sequence development periods, it is concluded that the development of sedimentary system is different due to the different terrain characteristics of the north and south. At the northern steep slope, the sediment accumulates rapidly through the gully, and more fan deltas are developed; on the southern slope, a large number of sediments are deposited along the gully direction, most of them are braided river deltas.
【學(xué)位授予單位】：中國(guó)地質(zhì)大學(xué)（北京）
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：P534.611;P737.1

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