Practical Volcanology, lecture notes for understanding volcanic rocks from field based studies
https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgT5CNpTEDm8qGuCEqaiL_3rB3BOyOuJAqtfCqrzDejvgZsmi0SBqaZ0lCGmx3CFZwoxSpo7PBsiKHi1W7I8EUFr-AYnTjC5tu82B29qmFzfoH4vCsanOs_hA903Sm2p-RBEpUWqie79TLL/s72-c/Practical+Volcanology+Lecture+Notes+for+Understanding+Volcanic+Rocks+from+Field+Based+Studies.jpg
Volcanic rocks are important in compiling geological records because of their characteristic chemistry, relatively fast accumulation and great variety; however, recognizable facies diversity may be useful for reconstructing not only the volcanic processes but also the eruptive environment where the volcanism take place. Volcanic rocks that are significantly fragmented are important from a stratigraphic point of view and they can be used to study palaeoenvironments where these volcanic deposits formed. The increasing importance of fragmental volcanic rocks in geological research is clearly demonstrated by the increasing number of publications that have appeared over recent decades dealing with volcaniclastic deposits and rocks. Different volcanological schools and associated textbooks have been published since the 1980s. Among the many that have become available four are of particular significance These are Fisher and Schmincke(1984): Pyroclastic Rocks; CAS and WRIGHT (1987) Volcanic Successions; MCPHIE et al. (1993) Volcanic Textures; and SIGURDSSON et al (2000) Encyclopedia of Volcanoes.
Enregistrer un commentaire