- 更多网络例句与全新世相关的网络例句 [注:此内容来源于网络,仅供参考]
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The research results indicated that the climatic changes could be divided into four stages as follows: late deglaciation (11324-10290 a B. P.), early holocene (10290-8850 a B. P.), mid holocene (8850-4400 a B. P.) and late holocene
研究结果表明,柴达木盆地尕海湖地区环境演化大致经过4个阶段:冰消期晚期(3109~3454cm)、早全新世(2623~3109cm)、中全新世(1114~2623cm)和晚全新世(50~1114cm)。
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Three preliminary conclusions could be approached as follows:(1) SST changes were distinctively characteristic of stepwise fluctuations. A warming trend during the last deglaciation was punctuated by a slightly cooling event which corresponded to the Younger Dryas. The Holocene episode could be divided into three phases of warming, continuously high temperature and cooling.(2) Two remarkable cooling records were documented around 4 kaBP and 1.5 kaBP after the megathermal of the Holocene.(3) Comparison between time series of MD05-2904 diatom R SST index and stalagmite δ^18O results from Dongge Cave, Guizhou Province suggested that changes in the East Asian Monsoon climate is synchronous with variations in the SST in the northern SCS since the last deglaciation and they might have a close correlation with each other
结果表明:(1)南海北部15 kaBP以来表层海水温度呈现明显的阶段性波动特点,即末次冰消期气候转暖过程中,12.9~11.5 kaBP前后温度略有下降,与新仙女木事件对应,全新世南海北部气候依次经历了升温期、高温期和降温期3个变化阶段;(2)全新世大暖期鼎盛期结束后,南海北部海水温度阶段下降,两次明显降温分别发生于4 kaBP前后和1.5 kaBP前后;(3) MD05-2904孔硅藻R值时间序列曲线与董哥洞D4石笋δ^18O曲线对比表明,南海北部表层海水温度变化与末次冰消期以来东亚季风强度变化关系较为密切。
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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.
首先,我们在百色盆地边缘洞穴堆积物中,发现与百色盆地内网纹红土阶地(0.8 Ma )类型相似的石制品,通过对堆积物及其包含动物群的研究有望对解决早期人类生存环境背景作出贡献;其次,在么会洞发现了早更新世早期大约1.8 Ma 的人类化石、巨猿化石和丰富的哺乳动物化石,为解决早期人类起源提供了新的证据;再次,在百色盆地枫树岛旧石器时代遗址,通过科学发掘,从原生地层中发现五件与玻璃陨石共生的手斧,以及近百件其它类型的石制品,解决了目前国际学术界普遍关注的百色手斧的层位问题,为进一步确定百色旧石器的时代奠定了基础;另外,通过对百色盆地边缘洞穴的系统发掘,发现了自早更新世早期至全新世以来不同时代的大量哺乳动物化石,同时还发现中更新世晚期--晚更新世早期和全新世的人类化石和石制品,对研究人类演化、建立华南第四纪生物地层序列具有重要的科学意义。
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Climate change in North China in Holocene caught much attention of the domestic and international academician.
基于全新世气候变化研究在全球变化将古论今和以今推古中的纽带作用和华北地区的区域敏感性,华北地区全新世气候变化吸引了众多学者的关注。
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Study on the Holocene climate and environment are of great significance not only for its near past but also for the understanding of the inter-correlation between human and earth environment.
全新世是距离现今最近的时代,对全新世环境变化的研究是探究人类与环境相互关系的重要内容。
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During the Last Interglaciation it was the forest, mainly composed of broadleaves, or forest-grassland at the east and middle part of the Chinese Loess Plateau, and was the forest-grassland at the west part of the Chinese Loess Plateau. It changed to the forest or forest-grassland at the most part of the Chinese Loess Plateau in the Holocene, some kinds of hardwood broadleaves dispersing at the warm temperate and the tropic zones appeared. Now the vegetation at the Chinese Loess Plateau inherits from that during the Holocene, the vegetation have been heavily destroyed owing to the human being actions. The vegetation protection at the Chinese Loess Plateau is a significant problem.
末次间冰期期间气候温暖湿润,黄土高原的中、东部地区主要发育了以落叶阔叶林为主的森林或森林草原植被,黄土高原西部地区主要发育的是以针叶林为主森林草原植被;全新世期间黄土高原的植被状况发生较大变化,黄土高原的大部分地区为森林植被或森林草原植被,植被中还有暖温带落叶阔叶林,并含有少量亚热带种属;现代黄土高原的植被主要还是继承了全新世以来的植被状况,但是由于人类活动的加剧,对黄土高原的植被产生了毁灭性的破坏,因此,如何保护黄土高原的自然植被是我们面临的一个严峻的现实问题。
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On the basis of pollen analysis of surface sample in North China, polynomial function analysis method was applied to establish pollen climate response surface of Pinus, Betula, Quercus, Artemisia, Chenopodiaceae, Compositae, Picea, Ephedra, Gramineae in North China, therefore an easy and applicable method for reconstructing palaeoclimate and palaeoenvironment with data of fossil pollen was founded; Multi-analysis method was applied to analyse the principal elements of surface sample pollen in central Inner Mongolia Steppe, the assemblages of surface sample pollen in steppe area and its relationship with vegetation type were discussed with helps from spore-pollen analysis of a peat section in Chasuqi, Inner Mongolia and 〓C chronometer, fossil pollen data were obtained with high resolution on the peat section in Chasuqi. Vegetation succession and environmental changes since Holocene at resolution of 70 years were primarily reconstructed in south Mount Daqingshan and Plain Tumete. The changes in the area were copmared with those in the neighbouring areas during the same period. It was found that Holocene environmental change had undergone the following stages: cold-arid, temperate-wet, warm-wet, temperate-arid and cold-arid, and the climatical optimum period occurred in 5000-4100 aB.
本文在对中国北方表土花粉研究的基础上,采用多项式函数回归方法建造了中国北方松属、桦属、栎属、蒿属、藜科、菊科、云杉属、麻黄属、禾本科等的花粉——气候趋势面,从而为利用化石花粉资料直接恢复古气候、古环境提供了一种方便易行的方法;采用多元分析方法对内蒙古中部草原区表土花粉进行了主成分分析,探讨了草原区表土花粉组合的规律及与植被类型的关系;本文还应用孢粉分析方法,结合〓C测年技术,通过内蒙古中部察素齐泥炭剖面高分辨率的化石花粉数据,初步恢复了大青山山地南部及土默特平原地区分辨率为70年的全新世以来植被演替和环境变迁的状况,并与邻近地区的全新世古气候、古环境进行了对比研究,研究发现,本区域全新世古环境的变迁序列基本上可以与周围地区及华北地区进行对比,其环境变迁经历了凉干~温湿~暖湿~温干~凉干的变化,且气候最适宜期出现在5000~4100aB.P。
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Low magnetic susceptibility, low CaCO3, low organic carbon concentration, low C/A (Chenopodiaceae/Artemisia) ratio, low Sr concentration and, hence, high Rb/Sr ratio in the lake sediments indicate a cold but moist climate during the global Little Ice Age in the Daihai area.
在明确湖泊沉积物Rb/Sr比值古气候指示意义的基础上,通过AMS-14C和210Pb精确定年及12.08米岱海沉积岩心的Rb/Sr比值、碳酸盐含量和有机碳含量的变化,恢复了包括中世纪暖期、小冰期及全新世适宜期等典型气候事件在内的全新世环境演化过程,基本认识是:全新世早—中期9-3.5kaB.P。
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Study shows that environment evolution and eustatic change of Holocene in this area may be divided into 6 stages:① early stage of early Holocene, 9 100~10 900 aBP,when sea level was low and this area was an oxidizing environment or oxidizing-reducing transition environment;② late stage of early Holocene, 8 000~9 100 aBP, sea-level rising,...
研究表明,本区全新世环境演化分为6个阶段:①早全新世早期,10900~9100aBP,海平面较低,尚未淹没本区,为近岸氧化环境或氧化—还原过渡环境;②早全新世晚期,9100~8000aBP,海水上涨,本区时淹时退,为浅海或潮坪环境,生物钻孔发育;③中全新世主体,8000~4150aBP,海平面快速上升,完全淹没,Fe2+/Fe3+介于0.7395~1.9123之间,为全新世中最高段,表明还原程度强、全球气候变暖;④中全新世后期,4150~2850aBP,海水有所下降,仍为浅海环境,Fe2+/Fe3+较高,多在1.0以上;⑤晚全新世,2850~1310aBP,海平面进一步下降,本区时常暴露,其中2150~1310aBP以还原环境为主,为潮下带,2150~2850aBP以氧化—还原过渡环境为主,为潮间带;⑥1855AD以来,海平面基本稳定,稍有上升,为现代黄河三角洲沉积时期。本区全新世至少存在5期冷热交替的旋回性气候变化。
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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.
获得主要结论如下:1、利用层序地层学的方法将收集的邯郸市钻孔以及论文所依托项目野外施工的钻孔进行了具体的地层划分与对比,建立了邯郸市第四系等时地层格架,将邯郸市第四系划分为全新统、更新统上部欧庄组(Qp3O)、更新统中部杨柳青组(Qp2Y)和更新统下部固安组(Qp1G)。2、利用收集到的邯郸市水文、工勘钻孔以及所依托项目初勘和详勘两个阶段野外施工的钻孔数据,建立钻孔数据库,通过使用三维建模软件GOCAD和地理信息系统软件ArcGIS等进行模拟,得到邯郸市市区部分第四系地层三维可视化模型,并获得各个地层的底部构造图;3、通过对所天生模型和钻孔廊带对比剖面的分析,可以得到:全新世和更新世晚期(Qp3)时期地形整体较平缓,整体上显示西高东低、南北差异不大的格式,断裂显示不明显;更新世中期(Qp2)时期沿南北向和北西向存在几个沉积中心,地层发育受几条断裂的控制,反映了研究区的构造活动在更新世中期较为活跃;4、邯郸市自第四系以来,主要构造运动均发生于更新世中期,到更新世晚期及全新世时期逐渐趋于稳定,进而使更新统上部和全新统地层沉积均一且完好。
- 更多网络解释与全新世相关的网络解释 [注:此内容来源于网络,仅供参考]
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alluvium:冲积世
更新世又称洪积世(Diluvium),从300万年前至1万年前;全新世又称冲积世(Alluvium),从1万年前至现代. 第四纪有两大特点,一是此期气候变化剧烈,高纬度地区发生过多次冰川,中、低纬度地区也受到很大影响,二是人类出现,
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diluvium:洪积世
更新世又称洪积世(Diluvium),从300万年前至1万年前;全新世又称冲积世(Alluvium),从1万年前至现代. 第四纪有两大特点,一是此期气候变化剧烈,高纬度地区发生过多次冰川,中、低纬度地区也受到很大影响,二是人类出现,
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Holocene epoch:全新世
英语国家的岩石学家沿用哈克(Alfred Harker)的方式,把第三纪(Tertiary Period)和全新世(Holocene Epoch)的火成岩划分为钙碱性的和碱性的两个系列. 碱性岩中有许多具有罕见的名称,但是比较常见的碱性玄武岩、正长岩和响岩都包括在这一类里.
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Holocene epoch:全新世:一万年以来的地质时期,包括新石器时代、青铜器时代和铁器时代
Hollywoodish 好莱坞的 | Holocene epoch 全新世:一万年以来的地质时期,包括新石器时代、青铜器时代和铁器时代 | holocrystalline 全晶质的
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Holocene:全新世
从地质年代(Geological Epoch)上看,目前所处的年代属于"全新世"(Holocene),大约已经有11000年的历史. 但是,许多证据都表明,在1950年以后的几十年中,地球的一些地质特征发生了明显变化. 科学家们说,
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Holocene series:全新统
Holocene epoch 全新世 | Holocene series 全新统 | Holocene 全新世
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Holocene climate:全新世气候
全新世气候 Holocene climate | 全像 hologram | 全像学 holography
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Holocene Loess-Palaeosol:全新世
湿陷性黄土:Collapses loess | 全新世:Holocene Loess-Palaeosol | 黄土暗穴:loess hidden cavity
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Holocene stratum:全新世地层
分层厚度:Thickness of stratum | 全新世地层:Holocene stratum | 地层岩性:stratum lithology
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Mya age:米雅期{全新世}
相利共生 mutualism | 米雅期{全新世} Mya age | 菌丝体 mycelium