石笋
- stalagmite
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[stalagmite] 大致像一个倒转钟乳石的结晶质碳酸钙的沉积,系重碳酸钙饱和溶液滴在洞穴地面上形成的,常与钟乳石相接而成一完整石柱
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君不见益州城西门,陌上石笋双高蹲。-- 杜甫《石笋行》
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作者认为,洞穴区域性生态差异与土壤CO2产率不同是导致石笋碳同位素复杂多变的主要原因。
The author suggests that the region ecologic discrepancies and the different productivity of soil CO_2 is the main cause of the variability of the stalagmite carbon isotope .
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石笋ML(s)灰度和碳同位素序列很好地对应了石笋年纹层季节韵律。
The grey level and carbon isotope series of the stalagmite ML ( s ) commendably corresponds to the seasonal rhythm of the stalagmite annual layers .
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洞穴石笋的δ~(13)C记录研究
Study on δ ~ ( 13 ) C Isotope Records from Stalagmites
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桂林地区44ka洞穴石笋碳酸钙(盐)δ~(13)C的同位素组成与大气CO2浓度估算
The δ ~ ( 13 ) C Isotopic Composition of Cave Stalagmite Carbonate and the Estimation of the Atmospheric CO_2 Concentration Since 44 ka in Guilin Area
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ESR法测定石笋类碳酸盐年代的研究
Study on ESR dating of stalagmites
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EPR在南京石笋气候代用指标研究中的初步应用
A preliminary application of EPR in the study on climatic proxy for the stalagmite from Hulu cave , Nanjing
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与其它陆地古环境信息载体相比,洞穴滴石石笋具有分布广、时间跨度大、生长机制对环境敏感、适用于U系测年等特点。
Compared with other paleo-environment information media on land , cave dripstone-stalagmite has many superiorities including wide-ranging distribution , long-time span , sensitive to outside environment , suitable for U-series dating etc.
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洞穴石笋高精度ICP-MS铀系年代学与西南岩溶地区古气候变化研究
Research on the High Precision ICP-MS Uranium Series Chronology of Cave Stalagmites and the Paleo-climatic Changes in the South-Western Karst Region , P.R. China
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末次冰期贵州七星洞石笋高分辨率气候记录与Heinrich事件
The High Resolution Climate Records from Two Stalagmites in Qixing Cave of Guizhou and the Heinrich Events of the Last Glacial Period
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石笋的w(Mg)/w(Sr)值与Mg的固液分配系数DMg/Ca直接相关,可作为估算古温度变化的地球化学温度计。
The w ( Mg ) / w ( Sr ) ratio in a stalagmite , which is directly proportional to D_ Mg / Ca , the solid-liquid distribution coefficient of Mg , is proposed as a geochemical thermometer to estimate paleoclimatic changes .
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中全新世相应时段两支石笋δ~(18)O序列与树轮△~(14)C(res)曲线的良好对应关系说明了东亚季风降水波动在百年~十年尺度上显著受太阳驱动。
The good corresponding between the two stalagmites δ ~ 18O time series and tree ring Δ ~ 14C_res curve during the counterpart periods of mid-Holocene suggests that the precipitation change of East Asian monsoon is markedly driven by the solar activity at the centennial - to decadal-scale .
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岩溶石笋、海洋珊瑚、湖泊沉积物等信息载体可以用热电离质谱(TIMS)铀系技术定年。数据表明,1&3层的年代比目前的有些提法要早一些。
Cave stalagmites , corals , lake sediments are suitable for dating using the thermal ionization mass spectrometry ( TIMS ) uranium series method . 1 were dated with uranium series dating .
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对北京周口店猿人遗址第四地点洞穴的石笋进行了ESR测定,用封闭平衡模式计算了它们的ESR年龄,并与U系年龄进行了对比,发现这两种方法估计的平均年龄十分一致。
The ESR dating of stalagmite samples from Choukoutien Cave is described . The close-equilibrium model was used to estimate the ESR age which was then compared with the U series age . The two average ages were found consistent , indicating the reliability of the ESR dating .
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。研究表明,末次冰期相当于格陵兰冰芯记录、北大西洋沉积记录的YD、Heinrich事件等的气候跃变事件,几根石笋取得了非常一致的准确定位及定年。
It is showed by the study on stalagmite records that the last glacial epoch corresponds to YD and the Heinrich events recorded in North Atlantic sediment , and also corresponds to ice core from Greenland .
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该文从洞穴石笋δ18O与温度、降水的相关关系以及不同时间尺度下所指示的气候意义等角度对当前洞穴石笋气候学中氧同位素的应用进行了总结分析。
In particular the problems in the relationship of the temperature or the precipitation with δ ~ ( 18 ) O , the relation of the oxygen isotope with temperature and precipitation , and also the meaning of different time-scale are described .
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从石笋的氧同位素曲线中明显地检出了Heinrich事件,并且氧同位素曲线与周边地区的石笋记录有着良好的对比关系。
The Heinrich Events obviously were checked out from the oxygen isotopic curve of the stalagmite . And the oxygen isotopic curve of the stalagmite is better related and corresponded with the records of the other stalagmites froms the adjacent area .
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从石笋δ18O功率谱中识别出类似树轮14C的28~25a、10a等周期成分,表明该地区十年尺度季风降水也受太阳活动的影响。
Power spectrum analysis for δ ~ ( 18 ) O of the stalagmite proves that there were the periodicities of 28 ~ 25 year and 10 year respectively , which shows the East Asian Monsoon precipitation was also affected by decadal scale variations of solar activities .
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通过对云南寻甸白石岩仙人洞1号石笋进行高精度TIMS-U系测年和氧碳稳定同位素分析,重建了寻甸地区中全新世8.0ka以来高分辨率古气候演化序列。
Based on ages of high precision TIMS-U series dating and carbon and oxygen isotopes analyzing to the stalagmite from Xianren cave in Xundian , high resolution time sequence of paleoclimatic change since the middle Holocene i.e. the recent 8000 years , has been reconstructed .
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岩溶石笋的古环境研究进展
Progress in research on the paleo - environment of karst stalagmite
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南京猿人洞石笋年代学研究及其古气候记录
GEOCHRONOLOGICAL and Paleoclimatic studies on a stalagmite from Nanjing man cave
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杭州地区石笋稳定同位素古气候探索
Study by Stable Isotope method on for Stalagmite from Hangzhou area
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中国洞穴石笋信息管理系统的开发与应用
Exploitation and application of Cave Stalagmite information management system in China
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洞穴石笋沉积间断类型研究
Study on the Sedimentary Interruption Types of Stalagmite in Cave
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贵州七星洞晚更新世晚期石笋的古气候环境记录
The Paleoclimatic Records from the late Pleistocene Stalagmite in Guizhou Qixing cave
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洞穴次生沉积物石笋的稳定同位素古气候的研究
Paleoclimate of Stable Isotope of Stalagmite from Cave Secondary Sediment
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石笋和钟乳石有时会连成一根石柱。
Stalagmites and stalactites can sometimes meet to form a continuous column .
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北京周口店石笋稳定同位素古气候探讨
Paleoclimate of Stable Isotope of Stalagmite from Zhoukoudian , Beijing
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洞穴石笋沉积速率研究中值得注意的几个问题
A study on the sedimentation rate of Stalagmite in cave
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周口店洞穴石笋的同位素古温度探索
A study on paleotemperature of stalagmite from Choukoutien Cave by isotope determination
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倒数第二次冰期晚期东亚季风气候演变的石笋δ~(18)O记录
East Asian monsoon climate during the late Penultimate Glaciation based on stalagmite records