词汇 | volcanism |
释义 | BETA Examples of volcanismvolcanism isn’t in the Cambridge Dictionary yet. You can help! Nevertheless, the profusion of pyroclastic deposits signifies a major input to the volcanic-sedimentary record derived from subaerial volcanism. The age of volcanism in this area remains poorly known. The editors have succeeded in bringing together a volume that illustrates the enormous progress that has been made in the study of explosive subaqueous volcanism. Threats to life come with the largest, whose power rivals that of high-magnitude earthquakes and exceeds most volcanism. It is suspected that volcanism of this age may be more widespread than is known at present. Increased subaerial volcanism and the rise of atmospheric oxygen 2.5 billion years ago. Perhaps the most important aspect of this monograph is that its contributions provide compelling evidence for significant explosive subaqueous volcanism even at considerable water depths. For example, active volcanism is most likely responsible for maintaining the global cloud cover. Volcanism is a great draw to unsubtle film makers, and to many jolly geologists, but its greatest hazards are stealthy. In a departure from the previous book, there is no discussion of icy volcanism (cryovolcanism) on other outer planet satellites. This paper presents the results of extensive new fieldwork and the first detailed geochronological studies of the volcanism. It displays all known volcanism in each year up to 1993. The first chapter provides a context to volcanism within the earth sciences with a brief description of volcanic processes. Furthermore, volcanism coincided with prominent changes in local basin development, following collapse of the carbonate platform in this foreland basin. These characteristics suggest that the initiation of sinistral strike-slip movement behind the trench caused the basaltic volcanism subsequent to rifting. As the triple point migrates, the associated volcanism switches from arc to extensional. This is inter preted to reflect a substantial and relatively constant proportion of continental material involved in collisional arc volcanism. Much has been learned about the geologic environments of these magnificent valleys and their associated volcanism, but less so about their tectonic evolution. |
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