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Porosity, density and chemical composition relationships in altered Icelandic hyaloclastitesстатья
Информация о цитировании статьи получена из
Scopus
Дата последнего поиска статьи во внешних источниках: 28 мая 2015 г.
- Авторы: Franzson H., Gudfinnsson G.H., Helgadottir H.M., Frolova J.
- Сборник: Water-Rock Interaction
- Год издания: 2010
- Место издания: Birkle & Torres-Alvarado (eds)© 2010 Taylor & Francis Group London
- Первая страница: 199
- Последняя страница: 202
- DOI: ISBN 978-0-415-60426-0
- Аннотация: Basaltic hyaloclastite tuffs play an important role in hosting groundwater and geothermal systems in Iceland. Their porosity is high and may exceed 60%. Alteration starts by palagonitization of the glass during eruption and is usually complete at relatively low temperatures. Petrophysical measurements show that grain density decreases with increasing alteration but increases again when alteration has reached the chlorite-epidote facies. Porosity changes during alteration, with macro-pores filling at the same time as micro-porosity increases. When glass alters, most chemical components are released from the rock. This study shows, however, that chemical mobility during this process is very limited, even at the highest alteration state. Only Na2O shows high mobility and CaO, K2O, P2O5, Rb and V to a lesser extent. Other elements show no apparent mobility.
- Добавил в систему: Фролова Юлия Владимировна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | 2010_Franzson_Frolova_Hyaloclastits_WRI.pdf | 242,7 КБ | 29 января 2023 [JF] | |
| 2. | 2010_WRI-13.pdf | 2010_WRI-13.pdf | 242,7 КБ | 16 мая 2012 [JF] |