第三纪

剑川盆地第三纪以来地壳变形的地质分析与FT测年

Geological Analysis and FT Dating of Crustal Deformation in the Jianchuan Basin Since the Tertiary

利用K-Ar年代学方法，对山西左云地区第三纪火山岩剖面进行了初步精细定年。

By K-Ar chronology , we have preliminarily attempted on careful dating for a Tertiary volcanic profile in Zuoyun , Shanxi Province .

洱海东部第三纪火山岩与同时代基性岩为超K岩系。

The Cenozoic volcanic and mafic rocks in eastern Erhai , western Yunnan , constitute an ultra - potassic complex .

K-Ar法在第三纪地磁极性事件研究中的尝试

Attempt on studying tertiary geomagnetic events by using K-Ar chronology

确定其推覆方向是由SW向NE，道冲－推覆距离估计应大于100km。推覆时代应在早第三纪之后。

The napping direction goes along SW to NE , the napping distance estimates to be over 100 km and the time should be later than Palaeogene .

在白垩-第三纪的干旱、炎热古气候条件下，U经过强风化和热水浸出，在断陷带内富集成铀矿床&岩源活化型铀矿床。

Under the dry and hot paleoclimate condition in the Cretaceous-Tertiary period , strong weathering and hot water leaching forced uranium to be concentrated into the " rock origin activation " type uranium deposits in the fault depressed zone .

晚第三纪的沉积厚度近似于E2末剥蚀厚度，对油气生成和运移的影响不大。

The sedimentary thickness of Neogene is similar to that of denudation in the end of E 2 , which has only little influence on the formation and migration of oil and gas .

与地磁测量结果进行对比显示，利用K-Ar法与地磁学共同研究第三纪地磁极性事件是可行的。

After comparing K-Ar results with magnetic investigation , it can be found that it is feasible to study Tertiary geomagnetic events through K-Ar dating and terrestrial magnetism .

中国东部新生代火山岩K-Ar年龄与岩石化学研究表明，早第三纪（40&55Ma）均为拉斑与钙-碱性岩浆喷发，代表了弧后引张环境。

K-Ar dating of the Cenozoic volcanics from East China and their petrochemistry indi-cate that early Tertiary volcanism is represented mainly by the eruptions of tholeiitic and calc-alkaline magmas .

在早第三纪末（23×106a），一部分中侏罗统源岩已处于临界成熟状态（Ro为0.5%～0.6%）；

By the end of Paleogene ( 23Ma ), a part of them has been in critical mature status ( R o is about 0.5 % ~ 0.6 % );

珙桐（Davidiainvolucrata）是我国特有的珙桐科珙桐属植物，起源古老，为第三纪古热带植物区系的孑遗种。

Davidia involucrata is a species that is specially distributed in China and belongs to Davidia and Nyssaceae . It has epibiotic origin and is relic species from tertiary palae-tropical flora .

南方红豆杉（TaxusChinensisvar.mairei），是我国特有的第三纪孑遗树种，为国家一级濒危珍贵保护植物，也是红豆杉属植物中分布最广泛的一种。

Taxus chinensis var. mairei , being one of the state-protected one-grade rare and endangered plants , is one of the tertiary relic species and endemic to China . It is also distributed as one of the most wide plant in the taxus .

中生代末至第三纪早期，东部盆地的古地温梯度大于4.0℃／100m，而西部盆地的在3.0～2.5℃／100m。

The eastern basins had more than 4 . 0 ℃ / 100m of PG from the Late Mesozoic to Early Cenozoic Era , but lower than 3 . 0 ~ 2 . 5 ℃ / 100m in the western basins of China during the same period .

圈定结果表明，在3.5km以下深度范围，凸起面积增大，早第三纪凹陷面积缩小，而且凹陷内下第三系呈向斜形态。

It is shown that the uplift scope increased , the depression area decreased , and the inner formation of the depression took the shape of syncline .

中新生代沉积盆地表现为典型下部断陷型和上部坳陷型盆地结构，最大沉积厚度8000～10000m，沉积主洼形态较好，晚&早第三纪是盆地主要的勘探目的层系。

The Cenozoic sedimentary basin shows a typical structure of lower faulting and upper depression , the maximum thickness is 8 000 ~ 10 000 m , and the Paleogene and Neogene are the main target strata of the basin .

利用电子探针和激光探针剥蚀系统（LA-ICP-MS）对北羌塘新第三纪高钾钙碱岩系英安岩中角闪石的主元素和微量、稀土元素进行了分析。

Based on the electron microprobe and laser ablation inductively coupled plasma mass spectrometer ( LA-ICP-MS ) analyses , the major and trace element features of amphibole from the Cenozoic high-potassium calc-alkaline dacite of north Qiangtang are discussed in this paper .

沉积于中中新世到上新世的浊积砂体是第三纪Niigata弧后盆地的主要油气储层之一，该盆地是日本列岛最富产石油的盆地。

Many turbidite sandstone bodies , deposited during the Middle Miocene to Pliocene , are distributed and form one of major reservoirs for oil and gas in the Tertiary Niigata backarc sedimentary basin , the most productive oil basin in the Japanese Islands .

其后，季风系统在晚第三纪又经历了巨大变化，包括15~13Ma前、8Ma、3Ma前干旱气候的加剧和季风系统的加强。

Since then , the Neogene has witnessed significant variations of the monsoon system , including enhancement of aridity and monsoon intensity at about 15 ~ 13 Ma , around 8 Ma and 3 Ma .

应用Easy-Ro（%）数值模拟方法对下白垩统烃源岩生烃史的研究表明，本区主要生油期为晚第三纪-第四纪，不存在二次生烃作用。

Applying the Easy-Ro ( % ) model to the hydrocarbon generating history research of the lower Cretaceous source rocks shows that the main oil-generating period is from late Tertiary to Quaternary , and does not exist the second hydrocarbon-generating event during the geological time .

南襄盆地泌阳断陷第三纪湖泊演化探讨

Discussion on tertiary lake evolution of Biyang fault-depression in Nanxiang Basin

铀成矿时代主要集中于白垩-第三纪。

Metallogenetic epoch of uranium is mainly concentrated in Cretaceous-Teytiary periods .

晚第三纪以来断裂活动微弱。

The activity of the fault has been weak since Neogene .

晚第三纪以前形成古土壤的鉴别、分类及其在古环境研究中的应用

Identification , Classification and Application in Paleoenvironment Research of Pre-Neogene Paleosols

新疆准噶尔盆地北缘第三纪地层古生物研究新进展

Progress of the study of tertiary biostratigraphy in North Junggar Basin

中国东部第三纪箕状断陷斜坡带的石油地质特征

On the petroleum geological features of tertiary half-graben in eastern China

西湖凹陷是经历多期构造作用的白垩&第三纪盆地。

Xihu sag is a Cretaceous-Tertiary basin which experienced multi-episodic tectonism .

中国新第三纪中-小型猿类化石及其意义巫山龙骨坡似人下颌属于猿类

Middle small bodied apes from Neogene in China and their significanc

中国东南部侏罗纪&第三纪陆相地层沉积特征

The sedimentary features of the jurassic-tertiary terrestrial strata in Southeast China

小龙潭盆地第三纪成煤植物及古生态

Tertiary Coal - forming Plants and Their Paleoecology in Xiaolongtan Basin

广西百色第三纪哺乳动物群与气候变迁

Paleogene climate change and mammalian fauna in Bose Basin of Guangxi