Titlebook: Volcanic Successions Modern and Ancient; A geological approac R. A. F. Cas,J. V. Wright Book 1988 Springer Science+Business Media Dordrecht

節(jié)約

Some properties of magmas relevant to their physical behaviour,ws, either as a coherent mass or as a particulate mass flow, then the original character of the erupted material will control the form and mobility of the resultant deposit. An understanding of why magmas erupt coherently or explosively and how they behave subsequently requires a brief review of some of the properties of magmas.

transdermal

Classification of modern and ancient volcaniclastic rocks of pyroclastic and epiclastic origins,is of ancient volcaniclastic rocks. The problems associated with the use of the terms ‘a(chǎn)gglomerate’ and ‘vulcanian’ for ancient volcaniclastic rocks are discussed and, finally, we comment on the nomenclature of quench-fragmented and autobrecciated (flow brecciated) volcaniclastics.

因無茶而冷淡

Catheter

Some properties of magmas relevant to their physical behaviour,ucts. At the time of eruption the volcanic products may range in character from pure magmatic liquid to essentially solid. If the erupted material flows, either as a coherent mass or as a particulate mass flow, then the original character of the erupted material will control the form and mobility of

組裝

Volcaniclastic deposits: fragmentation and general characteristics,control their characteristics, are discussed in Chapter 4. In this chapter we consider how volcaniclastic deposits (particularly those formed by primary volcanic processes) are formed, and some of their general characteristics. The use of the non-genetic term ‘volcaniclastic’, opens the way to explo

adumbrate

Lava flows,r some basaltic lavas, that are fed by lava fire fountains. Lava flows show great variations in size and shape, and in their surface and internal features. In this chapter we describe these variations and discuss the different controls on lava morphology, such as effusion rate, physical properties (

myelography

Three types of pyroclastic deposits and their eruption: an introduction,es according to their mode of transport and deposition:.In this introductory chapter on pyroclastic rocks we set out the differences between these three basic types of deposit. We also describe the eruption style and the deposits of different kinds of pyroclastic falls, flows and surges, based on st

繼而發(fā)生

Dissonance

Transport and deposition of subaerial pyroclastic flows and surges, a type of flow, one at the dilute, low particle concentration end of the spectrum and the other at the highly concentrated end. It is shown that there is a broad spectrum of pyroclastic flow types, and that the flow mechanics can vary, as do the resultant facies. The roles of fluidisation and turbu

本土