Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item:

Authors: Del gaudio, P.*
Ventura, G.*
Title: Mechanical erosion of xenoliths by magmatic shear flow
Title of journal: Geophysical Research Letters
Series/Report no.: / 35 (2008)
Publisher: AGU
Issue Date: 2008
DOI: 10.1029/2008GL033781
Keywords: xenoliths
Abstract: We focus on the role of mechanical erosion by magmatic shear flow in the formation of xenoliths occurring in lava flows. The process is analyzed by combining the physics of fragmentation and erosion to the concept of rock mass. The conditions for the country rock fragmentation are analyzed as a function of the magma viscosity, strain rate and tensile strength of the rock mass. In reservoirs, mechanical processes play a subordinate role and thermal erosion processes prevail. In conduits, intermediate and silicic magmas may erode and, eventually, fragment good to poor quality country rock masses. Basalts may erode poor quality country rocks. A crystal-rich magma has more chance to break up the conduit walls with respect to a vesiculated melt. The variety of xenoliths of a lava reflects a set of wall-rocks with similar mechanical properties and may not mirror the stratigraphy of the substratum of a volcanic area.
Appears in Collections:04.08.05. Volcanic rocks
Papers Published / Papers in press

Files in This Item:

File Description SizeFormatVisibility
Del Gaudio and Ventura 2008 GRL.pdfMain article242.33 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Share this record




Stumble it!



Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA