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UMD-led Study Finds Ancient Earth’s Fingerprints in Young Volcanic Rocks
UMD-led Ancient Earth’s Fingerprints Young Volcanic Rocks
2017/4/27
Earth’s mantle is made of solid rock that nonetheless circulates slowly over millions of years. Some geologists assume that this slow circulation would have wiped away any geochemical traces of Earth’...
Boron and other trace element constraints on the slab-derived component in Quaternary volcanic rocks from the Southern Volcanic Zone of the Andes
Andean Arc arc lava boron prompt γ-ray analysis mantle source
2017/4/11
We present a dataset for boron and other trace element contents obtained from samples from 13 volcanoes distributed
along the Quaternary volcanic front of the Southern Volcanic Zone (SVZ) of the Chil...
Mineral-Chemical Constraints on the Miocene Calc-alkaline and Shoshonitic Volcanic Rocks of Western Turkey: Disequilibrium Phenocryst Assemblages as Indicators of Magma Storage and Mixing Conditions
western Anatolia magma evolution magma mixing compositional zoning disequilibrium parameters crustal magma chambers
2009/7/7
Early to Middle Miocene (22 to 15 Ma) volcanic activity across western Turkey produced a series of lavas and pyroclastic deposits with calc-alkaline and shoshonitic affinities. The erupted magmas show...
Textural and Compositional Evidence for Magma Mixing in the Evolution of the Çamlıdere Volcanic Rocks (Galatean Volcanic Province), Central Anatolia, Turkey
Ç amlı dere Turkey zoning sieved texture reaction texture magma mixing
2009/7/7
The Çamlıdere area, in the Galatean Volcanic Province (Ankara), Turkey, is composed of rhyolitic, andesitic, trachytic, dacitic and locally basaltic rocks. The older volcanic rocks in the...
Geochemical Characteristics of Mafic and Intermediate Volcanic Rocks from the Hasandağ and Erciyes Volcanoes (Central Anatolia, Turkey)
Central Anatolia collision volcanism lithospheric delamination Turkey
2009/7/7
Hasandağ and Erciyes stratovolcanoes, which are the two important stratovolcanoes in Central Anatolia, erupted volcanic products with both calc-alkaline and alkaline compositions, although the c...
Compositional Variations, Zoning Types and Petrogenetic Implications of Low-pressure Clinopyroxenes in the Neogene Alkaline Volcanic Rocks of Northeastern Turkey
clinopyroxene zoning low-pressure alkaline volcanics eastern Pontides Northeastern Turkey
2009/7/7
Clinopyroxene phenocrysts and microphenocrysts in different series of the Neogene alkaline volcanic rocks from the eastern Pontides (NE Turkey) record various stages in the crystallization conditions ...
期刊信息
篇名
Tellunide Type Gold Deposit in Beiling Proterozoic volcanic rocks
语种
英文
撰写或编译
作者
Ren Fugen
第一作者单位
刊物名称
Acta Ceoscientia sinica
页面
1996 Vol.17 P77-79
出版日期
1996年
月
日
文章标识(ISSN)
相关项目
豫西元古宙碲化物型金矿成...
期刊信息
篇名
The zircon SHRIMP chronology and trace element geochemistry of the Carboniferous volcanic rocks in western Tianshan Mountains
语种
英文
撰写或编译
撰写
作者
Zhu YF,Zhang LF,Gu LB,Guo X,Zhou J
第一作者单位
北京大学
刊...
Significance of K-Ar age of bimodal volcanic rocks at Wangtian’e volcano, Changbaishan area.
2007/7/28
期刊信息
篇名
Significance of K-Ar age of bimodal volcanic rocks at Wangtian’e volcano, Changbaishan area.
语种
中文
撰写或编译
撰写
作者
Fan Qicheng,Liu Roxin,Li Daming,Li Qi
第一作者单位
中国地震局地质研究所
刊物名称
CHINESE SCIENCE BULL...
Genesis of Dioctahedral Phyllosilicates During Hydrothermal Alteration of Volcanic Rocks: II. The Broadlands-Ohaaki Hydrothermal System, New Zealand
Crystallization Dioctahedral Phyllosilicates Hydrothermal System Illite-Smectite (I-S) Polytypism Transmission Electron Microscopy
2011/12/2
Abstract: The clay mineral textures, assemblages, formation mechanisms, and controlling geological parameters relating to alteration of silicic volcanic rocks by hydrothermal solutions, in core sample...
Genesis of Dioctahedral Phyllosilicates During Hydrothermal Alteration of Volcanic Rocks: I. The Golden Cross Epithermal Ore Deposit, New Zealand
1M polytype Dioctahedral Clay Minerals Epithermal Hydrothermal Alteration Illite-Smectite (I-S) Neoformation Smectite Transmission Electron Microscopy (TEM)
2011/12/2
Abstract: To characterize the evolution of dioctahedral interstratified clay minerals in the Golden Cross epithermal deposit, New Zealand, hydrothermally altered volcanic rocks containing the sequence...
Quantification and Characterization of Maghemite in Soils Derived from Volcanic Rocks in Southern Brazil
Aluminum Substitution Ferrimagnetic Maghemite Magnetic Susceptibility Magnetite Selective Dissolution
2011/12/7
Abstract: Many soils developed from volcanic rocks in southern Brazil exhibit spontaneous magnetization caused by the presence of fine-grained maghemite (γ-Fe2O3), but few attempts were made to quanti...
Cation Exchange Capacity of Layer Silicates and Palagonitized Glass in Mafic Volcanic Rocks: A Comparative Study of Bulk Extraction and In Situ Techniques
Cation Exchange Capacity Corrensite Electron microprobe analysis Extractable cations Palagonite Smectite
2011/12/27
The cation exchange capacities (CEC) and extractable cations in smectite, corrensite and palagonitized glass from hydrothermally-altered pillow lavas and hyaloclastite breccias were measured by both b...