Zircon saturation in silicate melts: a new and improved model for aluminous and alkaline melts

2016 ◽  
Vol 171 (3) ◽  
Author(s):  
Fernanda Gervasoni ◽  
Stephan Klemme ◽  
Eduardo R.V. Rocha-Júnior ◽  
Jasper Berndt
Keyword(s):  
Silicate Melts ◽  
Improved Model ◽  
Zircon Saturation

scholarly journals Modulation of zircon solubility by crystal–melt dynamics

Geology ◽  
2020 ◽  
Vol 48 (8) ◽  
pp. 798-802 ◽  
Author(s):  
Dawid Szymanowski ◽  
Francesca Forni ◽  
John A. Wolff ◽  
Ben S. Ellis
Keyword(s):  
Silicate Melts ◽  
Chemical Affinity ◽  
Magma Body ◽  
Zircon Dating ◽  
Body Dynamics ◽  
Magmatic Processes ◽  
Crystal Accumulation ◽  
Magma System ◽  
Zircon Saturation ◽  
Highly Evolved

Abstract Zircon dating is commonly used to quantify timescales of magmatic processes, but our appreciation of the consequences of internal magma body dynamics lags behind ever-increasing analytical capabilities. In particular, it has been shown that crystal accumulation and melting of cumulates by recharge-delivered heat may affect melt chemistry within magma bodies. We considered the effect of such processes on zircon solubility in highly evolved silicate melts of diverse chemical affinities. Our modeling shows that in most cases cumulate melting perpetuates the zircon saturation behavior of the first melts emplaced at shallow storage levels. Once cumulate melting is established, the ease of saturating in zircon is controlled by cumulate mineralogy, with a particular effect of the amount of cumulate zircon and its availability for resorption. The fidelity of zircon as a recorder of magma system history thus depends on both the system’s chemical affinity and mineralogy, and the history itself.

Zircon saturation model in silicate melts: a review and update

2019 ◽  
Vol 39 (3) ◽  
pp. 387-403
Author(s):  
Tongbin Shao ◽  
Ying Xia ◽  
Xing Ding ◽  
Yongfeng Cai ◽  
Maoshuang Song
Keyword(s):  
Silicate Melts ◽  
Saturation Model ◽  
Zircon Saturation

An Improved Model for Short-Term Traffic Forecasting Considering Weather Impacts

CICTP 2017 ◽  
2018 ◽  
Author(s):  
Xinchao Chen ◽  
Si Qin ◽  
Jian Zhang ◽  
Huachun Tan ◽  
Yunxia Xu ◽  
...  
Keyword(s):  
Short Term ◽  
Traffic Forecasting ◽  
Improved Model ◽  
Weather Impacts

Improved Model for Vocal Folds with a Polyp with Potential Application

2020 ◽  
Author(s):  
Jônatas Santos ◽  
Jugurta Montalvão ◽  
Israel Santos
Keyword(s):  
Potential Application ◽  
Vocal Folds ◽  
Improved Model

scholarly journals Human Prehistoric Demography Revealed by the Polymorphic Pattern of CpG Transitions

2020 ◽  
Vol 37 (9) ◽  
pp. 2691-2698 ◽  
Author(s):  
Xiaoming Liu
Keyword(s):  
Population Dynamics ◽  
Population Expansion ◽  
Future Research ◽  
Human Populations ◽  
Neolithic Revolution ◽  
Cpg Sites ◽  
Hunting And Gathering ◽  
Genome Wide ◽  
Polymorphic Pattern ◽  
Improved Model

Abstract The prehistoric demography of human populations is an essential piece of information for illustrating our evolution. Despite its importance and the advancement of ancient DNA studies, our knowledge of human evolution is still limited, which is also the case for relatively recent population dynamics during and around the Holocene. Here, we inferred detailed demographic histories from 1 to 40 ka for 24 population samples using an improved model-flexible method with 36 million genome-wide noncoding CpG sites. Our results showed many population growth events that were likely due to the Neolithic Revolution (i.e., the shift from hunting and gathering to agriculture and settlement). Our results help to provide a clearer picture of human prehistoric demography, confirming the significant impact of agriculture on population expansion, and provide new hypotheses and directions for future research.

An improved model for meshing characteristics analysis of spur gears considering fractal surface contact and friction

2021 ◽  
Vol 158 ◽  
pp. 104219
Author(s):  
Zhifang Zhao ◽  
Hongzheng Han ◽  
Pengfei Wang ◽  
Hui Ma ◽  
Shunhao Zhang ◽  
...  
Keyword(s):  
Spur Gears ◽  
Fractal Surface ◽  
Surface Contact ◽  
Characteristics Analysis ◽  
Meshing Characteristics ◽  
Improved Model
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