A important conclusion is that fluvial-lacustrine, karst, diluvial, colluvial, glacial and outwash deposits, which formed between early Pleistocene and early middle-Pleistocene, have high cement degree, low permeability, high intensity, low deformation, and good engineering properties, but modern riverbed phase deposits, which formed in between late middle-Pleistocene and Holocene, are loose, highly permeable, weak, highly deformable and have bad engineer characteristics, so they are susceptive to differential settlement, piping, drafting, liquefaction problems.

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First,we have discovered stone artefacts in caves, which have similar features to that were broadly scattered in laterite terraces in Bose basin(0.8 Ma B.P),next study on deposits and fauna will be hopefully contributed to document paleoenvironmental background of early human;Second,early human fossils,Gigantopithecus and mammalian fossils unearthed in Mohui cave provide new evidence of early human origin; Third,after our scientific excavation in Fengshudao site in Bose basin, we have found five pieces of bi-face LCT with 10 tektites and nearly 100 stone artefacts form original laterite deposit.This important discovery is very answerable to international question about stratigraphic suspect of LCT; Fourth, abounding mammallian fossils with human fossils and remains from early Pleistocene to Holocene have been uncovered after systematically excavation in marginal cave of Bose basin.These discoveries are significant to the study on human evolution and establishment of sequence of Quarternary biological-stratigraphic in southern China.

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Based on investigations and studies of modern and ancient glaciers at the Tanggula Mountain pass, coupled with the GPS data and TL, 10B-26Al-21Ne and 14C dating data, Quaternary remnants of glaciation in the study area are discussed in detail. Two glacial epochs (i.e., the late Middle Pleistocene penultimate glacial epoch and the mid-late Late Pleistocene last glacial epoch) arid two Holocene glacial advances (i. e. the Neoglaciation and the Little Ice Age) have been intensively studied.

在對唐古拉山口現(xiàn)代冰川和古冰川考察研究的基礎(chǔ)上，結(jié)合定位觀測資料和TL91在线精品国自产拍、10B-26Al-21Ne及14C測年數(shù)據(jù)欧美性爱资源站，對區(qū)內(nèi)第四紀(jì)冰川遺跡進行了深入討論，劃分出二次冰期（即中更新世晚期的倒數(shù)第二次冰期精品黄黄久久久免费看、晚更新世中－晚期的末次冰期）和二次全新世冰進男女免费视频在线观看网址。

Influenced by tectonic movement, there were no sediments in the area from Oligocene to Miocene. Appearance of marlite in the Pliocene, especially in Yaqueling region, proved localized depositing environment forming, for which there had only few amount of terrigenous matters to supply. Sedimentary facies association of alluvial fan, fan delta and inland lake appeared at the early and middle stage of lower Pleistocene, and association of fan delta and inland lake appeared at the later stage of lower Pleistocene and the early stage of middle Pleistocene. Net-veined laterite appeared at the top of lacustrine deposit, which reflected pedogenesis taking place after the end of deposition. Such evolution history proves that there had no lager river system traversing this area before the early stage of middle Pleistocene.

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The study area is located in the W-E fault valley 68 km west to Yumenguan, on a residual hill peneplain of the North Mountain north to Suleihe billabong (90°～90°10′E,40°30′～40°34′N). There, the paleo-lacustrine sediments composing Yardang landform is deposited in the period of Middle and even Early Pleistocene.

玉門關(guān)西雅丹地貌位于玉門關(guān)以西68 km的疏勒河故道北面北山剝蝕殘丘準(zhǔn)平原的東西向斷層谷地中（90°00′～90°10′E国产精品18久久久久久不卡， 40°30′～40°34′N）www、/789黄片，該區(qū)雅丹地貌組成的古湖相地層被推測形成于中更新世甚至早更新世，中更新世末的新構(gòu)造運動湖水向西撤退在线无码不卡网，隨即被晚更新世的戈壁礫石層覆蓋亚洲人成在线精品无码毛片。

On the basis of volcanological study,here we present thirty one K-Ar ages of basaltic rocks and two 14C ages of coke and peat. The history of LGV Quartenary activities can be divided into three main periods, namely Xiaoyishan Period (Early Pleistocene:2.15～0.75Ma), Longang Period (Middle－Late Pleistocene::0.68～0.05Ma) and Jinglongdingzi Period Holocene:1600～1500a.

根據(jù)31個火山巖K-Ar年齡和2個炭化木與泥炭層的14C年齡，將龍崗第四紀(jì)火山活動分為三期：小椅山期（早更新世：2.15～0.75Ma）免費一級毛片、龍崗期（中－晚更新世：0.68～0.05Ma）和金龍頂子期（全新世：1600～1500a国产老熟女乱伦。

Analyzing the model, especially the activity of Taihang Mountain piedmont fault, we got such main conclusion:1. Based on sequence stratigraphy, the strata is divided from the selected drills. And the Quaternary stratigraphic framework of Handan city is established, dividing the Quaternary strata into four parts- Qh, Qp3O , Qp2Y and Qp1G.2. With all the selected drill data of Handan city, a drill database is established. A quaternary strata 3D model of Handan city is imitated by GOCAD and ArcGIS, and so are the bottom structural map of each horizon.3. Analyzing the 3D model and the contradistinction section of drills, we got: the stratum of Qh and Qp3 is smooth and flat, with a feature of a higher west, little difference between south and north and undistinctness of faults; there are several depocenters along S-N and N-W in the stratum of Qp2, and the evolution of the stratum is controlled by a couple of ruptures, which means the tectonic movement is active in this period of time.4. Since quaternary, main tectonic movements happened in Qp2 and have been stable in Qp3 and Qh.

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Evolution history of Jianghan Basin can be divided into Seven stages by sedimentary character since Cretaceous: uplifting and decomposing stage (lower-middle Cretaceous), whole downfaulting stage , regional subsiding stage , uplifting and decomposing stage , differential downfaulting , shinking-subsiding-uplifting and denudating , subsiding stage , differential elevating and subsiding-stabilizing stage (lower Pleistocene-early stage of middle Pleistocene), whole subsiding stage (middle stage of middle Pleistocene), shringking stage (upper Pleistocene-Holocene).

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It has been found that the Sanweishan fault is a Quaternary active fault which had intensely moved in the way of thrusting during the early to mid-Pleistocene and has ceased its movement since the late Pleistocene. Field investigation shows tha...

研究結(jié)果表明，敦煌三危山斷層是一條晚更新世以來無強震的第四紀(jì)活動斷層国产91调教丝袜在线，早完全免费的黄色视频在线观看、中更新世曾發(fā)生過比較強烈的傾滑逆沖運動，晚更新世以來停止活動日韩精品免费裸身美女在线观看，代之以包括三危山斷層在內(nèi)的間歇性區(qū)域抬升運動国产日本韩国欧美久久传媒。

The analytical results show that the neotectonic activities resulted from the nearly north-south-trending compressional stress in the region. Based on previous research results, the neotectonic activities in this area can be divided into five evolution stages: late Eocene to Oligocene, Miocene, late Pliocene to early Pleistocene, early Pleistocene to Mid-Pleistocene, and Mid-Pleistocene to now.

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alluvium：沖積世

更新世又稱洪積世(Diluvium),從300萬年前至1萬年前;全新世又稱沖積世(Alluvium),從1萬年前至現(xiàn)代. 第四紀(jì)有兩大特點,一是此期氣候變化劇烈,高緯度地區(qū)發(fā)生過多次冰川,中精品国产黄、低緯度地區(qū)也受到很大影響,二是人類出現(xiàn),

Pleistocene glacial epoch：更新世冰期

Pleistocene Climate Optimum 更新世氣候最適期 | Pleistocene glacial epoch 更新世冰期 | Pleistocene glaciation 更新世冰川作用

pleistocene：更新世

間冰期的時間也長於冰期,通常說,更新世(pleistocene)有四個冰期和三個間冰期,目前我們的時代為后冰期,若在未來又有一次冰期,則我們這個時代也是個間冰期了

Pleistocene epoch：更新世

第四紀(jì)(Quatrernary Period)可劃分為更新世(Pleistocene Epoch)和全新世(Holocene Epoch),開始于大約二百萬或三百萬年前,具體時間并未確定,現(xiàn)在也是第四紀(jì).

Pleistocene glaciation：更新世冰川作用

Pleistocene epoch 更新世 | Pleistocene glaciation 更新世冰川作用 | Pleistocene series 更新統(tǒng)

Calabrian age：卡拉不期(更新世早期)

焦黏性 caking | 卡拉不期(更新世早期) Calabrian age | 異極礦 calamine

mid-Pleistocene transition：中更新世轉(zhuǎn)型

濱水區(qū):riverside areas | 中更新世轉(zhuǎn)型:mid-Pleistocene transition | 北宋中期:the mid-stage of Northern Sung

Pleistocene Extinctions：(更新世的大滅絕)

15 Pacific Colonization(太平洋的移民史) | 16 Pleistocene Extinctions(更新世的大滅絕) | 17 Repulsive Force(排斥力)

iceage：更新世

iceage冰河時代 冰期 | IceAge更新世 | iceanchor冰錨

Qp：更新世;更新統(tǒng)

qlty 質(zhì) | Qp 更新世;更新統(tǒng) | QPL 產(chǎn)品一覽表