atacazo {GCDkit} | R Documentation |
This data set gives the whole-rock major- and trace-element contents, together with Sr and Nd isotopic compositions of lavas from two volcanic complexes in Ecuador: the Atacazo and the Ninahuilca (Hidalgo, 2006; Hidalgo et al., 2008). This dataset is used in a worked example (chapter 25) of Janousek et al.'s book (2016).
Note that this data set contains information on symbols and colours to be used in GCDkit,
as well as labels (Volcano
) that can be used for grouping or similar purposes.
It also includes 87Sr/86Sr
and 143Nd/144Nd
. Therefore, if the SrNd plugin
for GCDkit is installed, these columns will automatically be recognized as Sr and Nd initial
isotopic ratios when loading it into GCDkit (via accessVar("atacazo")
,
allowing variables such as TDM to be calculated and isotope-based diagrams to be plotted.
As no Age
column is supplied, the user will be prompted for the emplacement age;
the volcanoes being Quaternary in age (220-71 ka for Atacazo and 71-2 ka for Ninahuilca),
the age correction is insignificant and a small value (of 0.1 for instance) is adequate.
data(atacazo)
A data frame containing 110 observations of 38 variables.
data by Silvana Hidalgo, shidalgo@igepn.edu.ec,
formatted by Jean-François Moyen, jfmoyen@gmail.com
Hidalgo S (2006) Les interactions entre magmas calco-alcalins "classiques" et adakitiques: exemple du complexe volcanique Atacazo-Ninahuilca (Equateur). Unpublished PhD thesis, Universite Blaise-Pascal, Clermont-Ferrand, France
Hidalgo S, Monzier M, Almeida E, Chazot G, Eissen JP, van der Plicht J, Hall M (2008) Late Pleistocene and Holocene activity of the Atacazo-Ninahuilca Volcanic Complex (Ecuador). J Volc Geoth Res 176: 16-26 doi: 10.1016/j.jvolgeores.2008.05.017
Janousek V, Moyen JF, Martin H, Erban V, Farrow CM (2016) Geochemical Modelling of Igneous Processes - Principles and Recipes in the R Language. Springer Verlag, Berlin doi: 10.1007/978-3-662-46792-3
data(atacazo) accessVar("atacazo") binary("SiO2","Ba") ageEps()