BIBLIOS

  Ciências References Management System

Visitor Mode (Login)
Need help?


Back

Publication details

Document type
Conference papers

Document subtype
Extended abstract/Short paper

Title
Preliminary Geochemical and Isotopic Results in Thermal and Cold Waters of Graciosa Volcanic Island (Azores)

Participants in the publication
Paula M. Carreira (Author)
Maria do Rosário Carvalho (Author)
Dep. Geologia
IDL - Instituto Dom Luiz
João Carlos Nunes (Author)
Fausto Grassa (Author)
Giorgio Capasso (Author)
José Manuel Marques (Author)

Scope
International

Refereeing
Yes

Summary
Graciosa Island is located in the Azores Archipelago, along the so-called Terceira Rift, NE boundary of the Azores Plateau. From the hydrochemical point of view, two types of Na-Cl groundwater systems were identified: a cold aquifer system emerging at springs and exploited through boreholes for public water supply with different degrees of mineralization, and a hydrothermal system with issuing temperatures around 45 ºC. Geothermometers applied to the thermal waters point to deep temperature around 167 ºC and to immature waters, not reaching complete equilibrium with the reservoir rock. The isotopic composition and geochemistry of the thermal waters indicate mixture groundwater - seawater in different percentages and ion-exchange mechanisms that will be able to: i) increase groundwater salinity, ii) strongly change the isotopic composition to more enriched values, with different degrees of mixing.

Date of Publication
2017

Event
Procedia Earth and Planetary Science

Publication Identifiers
ISSN - 1878-5220

Publisher
Elsevier BV

Volume
17

Number of pages
4
Starting page
630
Last page
633

Document Identifiers
DOI - https://doi.org/10.1016/j.proeps.2016.12.169
URL - http://dx.doi.org/10.1016/j.proeps.2016.12.169

Keywords
Thermal waters volcanic island seawter-groundwater mixture Azores(Portugal)

Download

Export

APA
Paula M. Carreira, Maria do Rosário Carvalho, João Carlos Nunes, Fausto Grassa, Giorgio Capasso, José Manuel Marques, (2017). Preliminary Geochemical and Isotopic Results in Thermal and Cold Waters of Graciosa Volcanic Island (Azores). Procedia Earth and Planetary Science, 630-633

IEEE
Paula M. Carreira, Maria do Rosário Carvalho, João Carlos Nunes, Fausto Grassa, Giorgio Capasso, José Manuel Marques, "Preliminary Geochemical and Isotopic Results in Thermal and Cold Waters of Graciosa Volcanic Island (Azores)" in Procedia Earth and Planetary Science, , 2017, pp. 630-633, doi: 10.1016/j.proeps.2016.12.169

BIBTEX
@InProceedings{40957, author = {Paula M. Carreira and Maria do Rosário Carvalho and João Carlos Nunes and Fausto Grassa and Giorgio Capasso and José Manuel Marques}, title = {Preliminary Geochemical and Isotopic Results in Thermal and Cold Waters of Graciosa Volcanic Island (Azores)}, booktitle = {Procedia Earth and Planetary Science}, year = 2017, pages = {630-633}, address = {}, publisher = {Elsevier BV} }