Composition, pre-eruptive zonation, and geochronologic significance of the ~450ka Diamante Tuff, Andean Cordillera (34°S), Argentina

Hynek S.A.; Marchetti D.W.; Fernandez D.P.; Cerling T.E.

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Composition, pre-eruptive zonation, and geochronologic significance of the ~450ka Diamante Tuff, Andean Cordillera (34°S), Argentina

机译：阿根廷安第斯山脉（34°S）〜450ka Diamante Tuff的组成，火山爆发前的带化及其地质年代学意义

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Vertical geochemical sampling through the Diamante Tuff establishes patterns of zonation in the pre-eruption magma. Volcanic glass demonstrates a roofward increase in Fe and Cl, and a roofward decrease in Ca. Trace elements have no measurable zonation. Welded volcanic glass shows post-eruption loss of Fe, Mg and Cl as well as K gain. Our reported glass chemistry provides robust criteria for correlation to other localities. The Diamante Tuff is an important stratigraphic marker and recognition of this unit provides age control on Quaternary deposits, allowing determination of process rates and elucidating timing of tectonic and geomorphic activity.

机译：通过Diamante Tuff进行的垂直地球化学采样在喷发前的岩浆中建立了分区模式。火山玻璃显示出Fe和Cl的向屋顶增加，而Ca的向屋顶减少。痕量元素没有可测量的分区。焊接的火山玻璃显示出喷发后铁，镁和氯的损失以及钾的增加。我们报告的玻璃化学性质提供了与其他地区相关的可靠标准。 Diamante Tuff是重要的地层标记，该单元的识别提供了第四纪沉积物的年龄控制，从而可以确定过程速率并阐明构造和地貌活动的时间。

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《Quaternary geochronology》 |2010年第5期|共11页
作者
Hynek S.A.; Marchetti D.W.; Fernandez D.P.; Cerling T.E.;
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正文语种 eng
中图分类地球物理学;
关键词
Diamante Tuff; Magma zonation; Mendoza; Quaternary; Tephra; Tephrochronology;

机译：Diamante Tuff;岩浆带;Mendoza;第四纪;Tephra;年代学;

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1. Composition, pre-eruptive zonation, and geochronologic significance of the ~450ka Diamante Tuff, Andean Cordillera (34°S), Argentina [J] . Hynek S.A., Marchetti D.W., Fernandez D.P., Quaternary geochronology . 2010,第5期

机译：阿根廷安第斯山脉（34°S）〜450ka Diamante Tuff的组成，火山爆发前的带化及其地质年代学意义
2. Major changes in the post-glacial evolution of magmatic compositions and pre-eruptive conditions of Llaima Volcano,Andean Southern Volcanic Zone, Chile [J] . J. C. Schindlbeck, A. Freundt, S. Kutterolf Bulletin of Volcanology: Journal of the International Association of Volcanology and Chemistry of the Earth s Interior . 2014,第6期

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4. THE PRESENCE OF THE MESSAOUDENSIS-TRIFIDUM ACRITARCH ASSEMBLAGE (UPPER TREMADOCIAN-FLOIAN) IN THE CENTRAL ANDEAN BASIN, NORTH-WESTERN ARGENTINA: CALIBRATION WITH CHITINOZOANS AND GRAPTOLITE ZONATION [C] . Donglin JIANG International Symposium on the Ordovician System;International Symposium on the Silurian System;IGCP 503 Annual Meeting . 2007

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5. Influence of environment on soil carbonate clumped isotope records, Andean piedmont of central Argentina (32-34 degrees). [D] . Ringham, Mallory. 2015

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6. Munroa argentina a Grass of the South American Transition Zone Survived the Andean Uplift Aridification and Glaciations of the Quaternary [O] . Leonardo D. Amarilla, Ana M. Anton, Jorge O. Chiapella, -1

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机译：34ºS的安第斯山前山脉山脉的古生代地下室（阿根廷门多萨省科隆德尔卡里萨利托）：大地构造意义
8. MELT INSLUSIONS IN COMPOSITIONALLY ZONED TUFF, SOUTHWESTERN NEVADA VOLCANIC FIELD [R] . 1997

机译：内华达西南部火山地区构造带的熔体灌注

Composition, pre-eruptive zonation, and geochronologic significance of the ~450ka Diamante Tuff, Andean Cordillera (34°S), Argentina

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