This dissertation was focused on the research about the formation and evolution of NQB from the Late Triassic to the early middle Epoch of Jurassic Period, including integrated analyzing the characteristic of the key stratigraphic surfaces, the time of the key stratigraphy, regional rock straigraphy, biostratigraphy and chronostratigraphy, sedimentary system and depositional facies. On basis of these analysis, a tectonic evolution model have been established for NQB during from the Late Triassic to the early middle Epoch of Jurassic Period.1. After the systematic surface analysis about main stratigraphy units, we found that:(1) the bottom of Xiaochaka formation was comformity with the middle Triassic in the basin, and in the north margin it was deposited and overlapped on the different period stratigraphy before Triassic.(2) The top surface of Xiaochaka formation developed regionally karst and paleo-karst breccia, and was uncomformity with Nadigangri Formation, these things suggest that NQB in Xiaochaka depositing stage was developed from middle Triassic basin, and then an extensive regression occurred, the deposition was over and erosion come into being.(3) The lithologic assemblage, geochemistry, mixed fossils, and stratigraphy overlapping characteristic of Quemocuo Formation in early middle Jurassic indicted that the uncomformity surface was an extension-unconformity.2. Integrated analysis about stratigraphy division and correlation indicted that:(1) the paleontologic assemblage of Xiaochaka formation show its time was Carian -Norian stage of late Triassic. According to it was overlapped by late Triassic Nadigangri Formation, so Xiaochaka formation should be Carian - early Norian stage.(2) the SHRIMP Zircon U-Pb age of Nadigangri formation volcanic rocks wear vary form 216 to 205 Ma, so its time should be Norian, but maybe extended into Rhaetian Stage.(3) The age of its bottom volcanic rocks, the fossil assemblages of its middle and upper members and overlapped by lower Jurassic, indicted the age of Riganpeicuo Formation was Norian - Rhaetian stage. And the same time, the volcanic rocks geochemistry of Nadigangri and Riganpeicuo formation both reflected that they wear formed in rift tectonic settings. The lower lithologic and surface characteristic, fossil assemblages and its upper maybe was conformity with lower Jurassic, all reflected that the age of Tumengela Formation in Tumen area should be Norian - Rhaetian stage.

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This age stands for the formation time of the ocean basin of Xiugugabu-Daba Tethys, and is very close to that of the middle part of the Yarlung-Zangbo suture zone (126±1.5 Ma). This outcome provides a well chronologic condition for discussing the palaeotectonic framework and the evolution of the Tethys basin in the study area. In addition, the forma...

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The coal and coaly organic matter are believed mainly to be hydrocarbon souce of the basin in the middlelow Jurassic of the Turpan-Hami basin.

吐哈盆地中下佛羅統(tǒng)煤及煤系有機(jī)質(zhì)被確認(rèn)為該盆地的主力烴源巖女人十八片。

Songliao basin ; Late Mesozoic era ; Basin environment ; Organic evolution ; Ostracoda ; Conchostraca

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Detrital sedimentation is the direct record in basin for mountain uplift and erosion. The analysis of detrital minerals, including heavy minerals, is a key means for basin-mountain coupling studies.

碎屑沉積是山脈隆升和盆地沉積的直接記錄，包括碎屑重礦物研究在內(nèi)的碎屑沉積物的分析是開(kāi)展盆山耦合研究的必要手段欧美要精品。

According to the latest researches, there is a set of MesozoicT_3-J_(1+2 palaeo-foreland basin deposits in the deep-seated Songliao Basin, which are composed of detrital rock, coal and volcanic rock.

根據(jù)最新的研究成果四虎成人最新影院网址大全，松遼盆地深層存在一套早中生代(T3-J1+2)含煤和火山巖的古前陸盆地沉積。

Therefore, Changning-Menglian ocean basin is a small-scale in tercontinental rift ocean basin, and formed by pull-apart and spreading on the basis of the epeiric sea after Caledonian movement.

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Pearl River Mouth Basin, an epicontinental sea and marginal sea basin, is one of depositional basins abundant in oil and gas in China.

該沉積組合反映了張性邊緣海盆地的演化特點(diǎn)亚洲国产黄片，盆地演化與資源效應(yīng)表現(xiàn)在裂陷期、熱沉降期及斷塊升降期的生儲(chǔ)蓋配置免费在线亚洲，故勘探目的層段為熱沉降階段所形成的三角洲碎屑巖與陸棚碳酸鹽巖这里视频亚洲视频免费观看,。

The sedimentary formation can be summarized as epicontinental sea filling sequence, offshore debris lake basin sequence and inner continental lake basin sequence etc.

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