Please Note:

The Library Open Repository will be moving to a new authentication system on the 1st of November.

From this date onwards, account holders will be required to login using their University of Tasmania credentials.
If your current repository username differs from your University username, please email E.Prints@utas.edu.au so we can update these details on your behalf.

Due to the change, there will be a short outage of the repository from 9am on the morning of the 1st of November

Library Open Repository

Melt inclusion record of immiscibility between silicate, hydrosaline, and carbonate melts: Applications to skarn genesis at Mount Vesuvius

Downloads

Downloads per month over past year

Fulignati, P and Kamenetsky, VS and Marianelli, P and Sbrana, A and Mernagh, TP (2001) Melt inclusion record of immiscibility between silicate, hydrosaline, and carbonate melts: Applications to skarn genesis at Mount Vesuvius. Geology, 29 (11). pp. 1043-1046.

[img]
Preview
PDF
Geology-MtVesuv...pdf | Download (317kB)
Available under University of Tasmania Standard License.

| Preview

Abstract

Foid-bearing syenites and endoskarn xenoliths of the A.D. 472 Vesuvius eruption represent the magma chamber-carbonate wall-rock interface. Melt inclusions hosted in crystals from these rocks offer a rare opportunity to depict the formation and the composition of metasomatic skarn-forming fluids at the peripheral part of a growing K-alkaline magma chamber disrupted by an explosive eruption. Four principal types of melt inclusions represent highly differentiated phonolite (type 1), hydrosaline melt (type 3), unmixed silicate-salt melts (type 2), and a complex chloride-carbonate melt with minor sulfates (type 4). The high-temperature (700-800oC) magmatic-derived hydrosaline melt is considered to be the main metasomatic agent for the skarn-forming reactions. The interaction between this melt (fluid) and carbonate wall rocks produces a Na-K-Ca carbonate-chloride melt that shows immiscibility between carbonate and chloride constituents at ~700oC in 1 atm experiments. This unmixing can be viewed as a possible mechanism for the origin of carbonatites associated with intrusion-related skarn systems.

Item Type: Article
Keywords: Vesuvius; skarn; melt inclusions; immiscibility; fluid inclusion; magma chamber; evolution
Journal or Publication Title: Geology
Page Range: pp. 1043-1046
Date Deposited: 10 Aug 2006
Last Modified: 18 Nov 2014 03:11
Item Statistics: View statistics for this item

Actions (login required)

Item Control Page Item Control Page
TOP