REE fractionation during the gypsum crystallization in hyperacid sulphate-rich brine: The Poás Volcano crater lake (Costa Rica) exploited as laboratory

2018 ◽  
Vol 59 ◽  
pp. 87-96 ◽  
Author(s):  
Claudio Inguaggiato ◽  
Enrique Iñiguez ◽  
Loïc Peiffer ◽  
Thomas Kretzschmar ◽  
Lorenzo Brusca ◽  
...  
Keyword(s):  
Costa Rica ◽  
Crater Lake ◽  
Poas Volcano ◽  
Ree Fractionation

Using Crater Lake chemistry to predict volcanic activity at Poás Volcano, Costa Rica

1992 ◽  
Vol 54 (6) ◽  
pp. 494-503 ◽  
Author(s):  
Gary L Rowe ◽  
Shinji Ohsawa ◽  
Bokuichiro Takano ◽  
Susan L Brantley ◽  
Jose F Fernandez ◽  
...  
Keyword(s):  
Costa Rica ◽  
Volcanic Activity ◽  
Crater Lake ◽  
Lake Chemistry ◽  
Poas Volcano

Fluid-volcano interaction in an active stratovolcano: the crater lake system of Poás volcano, Costa Rica

1992 ◽  
Vol 49 (1-2) ◽  
pp. 23-51 ◽  
Author(s):  
Gary L. Rowe ◽  
Susan L. Brantley ◽  
Mario Fernandez ◽  
Jose F. Fernandez ◽  
Andrea Borgia ◽  
...  
Keyword(s):  
Costa Rica ◽  
Crater Lake ◽  
Lake System ◽  
Poas Volcano

scholarly journals Rare Earth Elements Variations in a Hyperacid Crater Lake and Their Relations With Changes in Phreatic Activity, Physico-Chemical Parameters, and Chemical Composition: The Case of Poás Volcano (Costa Rica)

2022 ◽  
Vol 9 ◽  
Author(s):  
Sabrina Pappaterra ◽  
Claudio Inguaggiato ◽  
Dmitri Rouwet ◽  
Raúl Mora-Amador ◽  
Carlos Ramírez-Umaña ◽  
...  
Keyword(s):  
Rare Earth ◽  
Costa Rica ◽  
Rare Earth Elements ◽  
Lake Water ◽  
Crater Lake ◽  
Major Elements ◽  
Chemical Parameters ◽  
Crater Lakes ◽  
Physico Chemical ◽  
Poas Volcano

Decades of geochemical monitoring at active crater lakes worldwide have confirmed that variations in major elements and physico-chemical parameters are useful to detect changes in volcanic activity. However, it is still arduous to identify precursors of single phreatic eruptions. During the unrest phase of 2009–2016, at least 679 phreatic eruptions occurred at the hyperacid and hypersaline crater lake Laguna Caliente of Poás volcano (Costa Rica). In this study, we investigate the temporal variations of Rare Earth Elements (REE) dissolved in Laguna Caliente in order to 1) scrutinize if they can be used as a new geochemical tool to monitor changes of phreatic activity at hyperacid crater lakes and 2) identify the geochemical processes responsible for the variations of REE concentrations in the lake. The total concentration of REE varies from 950 to 2,773 μg kg−1. (La/Pr)N-local rock ratios range from 0.93 to 1.35, and Light REE over Heavy REE (LREE/HREE)N-local rock ratios vary from 0.71 to 0.95. These same parameters vary in relation to significant changes in phreatic activity; in particular, the (La/Pr)N-local rock ratio increases as phreatic activity increases, while that of (LREE/HREE)N-local rock decreases when phreatic activity increases. REE concentrations and their ratios were compared with the variations of major elements and physico-chemical parameters of the lake. Calcium versus (La/Pr)N-local rock and versus (LREE/HREE)N-local rock ratios show different trends compared to the other major elements (Na, K, Mg, Al, Fe, SO4, and Cl). Moreover, a higher loss of Ca (up to 2,835 ppm) in lake water was found with respect to the loss of Al, K, and Na. This loss of Ca is argued to be due to gypsum precipitation, a process corroborated by the mass balance calculation simulating the precipitation of gypsum and the contemporaneous removal of REE from the lake water. The observed relations between REE, changes in phreatic activity, and the parameters commonly used for the monitoring of hyperacid volcanic lakes encourage investigating more on the temporal and cause-effect relationship between REE dynamics and changes in phreatic activity at crater lake-bearing volcanoes.

Chemical evolution and volcanic activity of the active crater lake of Poás volcano, Costa Rica, 1993–1997

2000 ◽  
Vol 97 (1-4) ◽  
pp. 127-141 ◽  
Author(s):  
M Martı́nez ◽  
E Fernández ◽  
J Valdés ◽  
V Barboza ◽  
R Van der Laat ◽  
...  
Keyword(s):  
Costa Rica ◽  
Chemical Evolution ◽  
Volcanic Activity ◽  
Crater Lake ◽  
Active Crater ◽  
Poas Volcano

Fumarole migration and fluid geochemistry at Poás Volcano (Costa Rica) from 1998 to 2001

2003 ◽  
Vol 213 (1) ◽  
pp. 247-262 ◽  
Author(s):  
O. Vaselli ◽  
F. Tassi ◽  
A. Minissale ◽  
G. Montegrossi ◽  
E. Duarte ◽  
...  
Keyword(s):  
Costa Rica ◽  
Fluid Geochemistry ◽  
Poas Volcano

Diffuse CO2 Degassing and Thermal Energy Release from Poás Volcano, Costa Rica

2019 ◽  
pp. 135-154
Author(s):  
Gladys V. Melián ◽  
Nemesio M. Pérez ◽  
Raúl Alberto Mora Amador ◽  
Pedro A. Hernández ◽  
Carlos Ramírez ◽  
...  
Keyword(s):  
Costa Rica ◽  
Energy Release ◽  
Thermal Energy ◽  
Poas Volcano ◽  
Co2 Degassing

Seismicity of Poás Volcano, Costa Rica

2019 ◽  
pp. 119-134
Author(s):  
Mario Fernández-Arce ◽  
Raúl Alberto Mora Amador
Keyword(s):  
Costa Rica ◽  
Poas Volcano
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