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中国科学院广州地球化学研究所陈绮静等-JGR-SE:大理苦橄岩中橄榄石熔体包裹体的水含量和氢同位素研究——重新评估水在峨眉山大火成岩省形成中的作用(图)
陈绮静 氢同位素 红外光谱
2024/1/17
大火成岩省是短时、巨量喷发的镁铁质岩浆建造,代表了地球内部巨量物质和能量的集中释放。地质记录表明,大火成岩省可以通过大规模火山脱气(包括H2O、SO2、CO2、F和Cl)对全球环境产生重大影响,可能造成生物大灭绝等重大灾变事件。大火成岩省的成因目前还没有一致看法,早期科学家们都强调了过量的热或者减压熔融的作用,但是后来的研究者强调岩浆中高的水含量对大火成岩省的形成才是最重要的因素。位于我国西南地区...
MAPPING LAND COVER IN THE TAITA HILLS, SE KENYA, USING AIRBORNE LASER SCANNING AND IMAGING SPECTROSCOPY DATA FUSION
GEOBIA LCCS Hyperspectral data
2015/5/7
The Taita Hills, located in south-eastern Kenya, is one of the world’s biodiversity hotspots. Despite the recognized ecological importance of this region, the landscape has been heavily fragmented d...
Transient Photoconductivity in Amorphous Se-Ge-Ag System
Persistent photoconductivity Chalcogenide Glasses Photoconductivity
2010/4/9
Transient Photoconductivity measurements have been made in vacuum evaporated thin films of Se0.80 - xGe0.20Agx at different intensities, temperatures and illumination times. The films exhibit long-liv...