When the Continental Crust MeltsGuest Editors: Edward W. Sawyer, Bernardo Cesare, and Michael Brown

229

235

750 800 850 900 950 1000

5

6

7

8

9

10

grt sil crd btkfs pl liq grt sil crd kfs pl liq

grt sil bt kfs pl liq

sil crd kfs pl liq

grt sil crd splkfs pl liq

grt sil crd pl liq

grt sil pl liq

grt sil kfs pl liq

sil crd spl pl liq

sil crdspl kfs pl liq

sil crd sp

l

pl liq (-q

tz)

grtsilliq

grt sil bt pl liq

silcrd pl

liq (-qtz)crd spl plliq (-qtz)

grt silcrd btkfs pl

grt sil bt pl

grt sil bt mukfs pl liq

NCKFMASH (+qtz) Composition AS

grt sil crdbt pl liq

grt sil crdbt pl liq

grt sil crdkfs pl liq

grt sil opxkfs pl liq

grt silpl liq

silbt pl

grt sil crdbt kfs pl liq

grt sil crd splkfs pl liq

grt sil crd kfs pl liq grt sil crdspl pl liq

sil crdspl liq

P (k

bar)

T (°C)750 800 850 900 950 1000

5

6

7

8

9

10

grt opx crd kfs pl liq

grt opx kfs pl liq

opx crd kfs pl liq

opx crd pl liq

grt opx p

l liq

opx pl liq

opxliq

grt o

px b

t kfs

pl l

iq

opx

crd

bt k

fs p

l liq

grt opx crdbt pl

grt b

t kfs

pl l

iq

grt bt pl liq

grt crdbt pl liq

grt crdbt pl

opxcrd bt pl

bt pl

opx btpl liq

grt opx crdkfs pl liq

opx kfspl liq

opx pl liq

opxcrd plliqopx pl liq

bt pl

grt opxbt kfspl liq

grt opxkfs pl liq

grt opxkfs pl liq

grt opxpl liq

grt opxpl liq

NCKFMASH (+qtz) Composition B

P (k

bar)

T (°C)

(a) (b)

241

247

253

261

When the Continental Crust Melts Edward W. Sawyer, Bernardo Cesare, and Michael Brown

How Does the Continental Crust Get Really Hot?Chris Clark, Ian C. W. Fitzsimons, David Healy, and Simon L. Harley

Is the Crucible Reproducible? Reconciling Melting Experiments with Thermodynamic CalculationsRichard W. White, Gary Stevens, and Timothy E. Johnson

Melted Rocks under the Microscope: Microstructures and Their InterpretationMarian B. Holness, Bernardo Cesare, and Edward W. Sawyer

Crustal Melting and the Flow of MountainsRebecca A. Jamieson, Martyn J. Unsworth, Nigel B. W. Harris, Claudio L. Rosenberg, and Karel Schulmann

Organizing Melt Flow through the CrustMichael Brown, Fawna J. Korhonen, and Christine S. Siddoway

D E P A R T M E N T S

Editorial – Is Science a Contact Sport? . . . . . . . . . . . . . . . . 219From the Editors – John Valley, Principal Editor 2012–2014 . . 220The Elements Toolkit – Smashing Up Stones . . . . . . . . . . . 221People in the News – Williams-Jones, Ferry, Stolper . . . . . . . 222Meet the Authors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226Society News

Swiss Society of Mineralogy and Petrology . . . . . . . . . . . . . .267Association of Applied Geochemists . . . . . . . . . . . . . . . . . . .268Mineralogical Society of Great Britain and Ireland . . . . . . . 269International Association of GeoChemistry . . . . . . . . . . . . . .270European Association of Geochemistry . . . . . . . . . . . . . . . .271The Clay Minerals Society . . . . . . . . . . . . . . . . . . . . . . . . . . .272The Meteoritical Society . . . . . . . . . . . . . . . . . . . . . . . . . . . .273Mineralogical Society of America . . . . . . . . . . . . . . . . . . . . 274International Association of Geoanalysts . . . . . . . . . . . . . . . . 276Société Française de Minéralogie et de Cristallographie . . .277Geochemical Society . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .278Mineralogical Association of Canada . . . . . . . . . . . . . . . . . 280

Book Review – Timescales of Magmatic Processes . . . . . . . . . . 282Meeting Report – Making Science Matter . . . . . . . . . . . . . 284Calendar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285Advertisers in This Issue . . . . . . . . . . . . . . . . . . . . . . . . . 286Parting Shots – Standing Stones . . . . . . . . . . . . . . . . . . . . 288

About the Cover: Spider Wall on the south face of Nuptse (the summit ridge

is at ~7650 m, and the wall is ~1700 m in height), showing a network of leucogranite dykes

in metasedimentary rocks of the Everest Series (centre)

above the Nuptse leucogranite, visible at the bottom left and

right. Leucogranites emplaced in the shallow crust are the end product of melting of the deep

crust in orogenic belts. The view is from Pokalde Peak in

the Khumbu Himalaya, Nepal. ImAge Courtesy of mICAh Jessup,

unIversIty of tennessee, usA

217

Elements is published jointly by the Mineralogical Society of America, the Mineralogical Society of Great Britain and Ireland, the Mineralogical Association of Canada, the Geochemical Society, The Clay Minerals Society, the European Association of Geochemistry, the Inter national Association of GeoChemistry, the Société Française de Minéralogie et de Cristallographie, the Association of Applied Geochemists, the Deutsche Mineralogische Gesellschaft, the Società Italiana di Mineralogia e Petrologia, the International Association of Geoanalysts, the Polskie Towarzystwo Mineralogiczne (Mineralogical Society of Poland), the Sociedad Española de Mineralogía, the Swiss Society of Mineralogy and Petrology, and the Meteoritical Society. It is provided as a benefit to members of these societies.

Elements is published six times a year. Individuals are encouraged to join any one of the partici-pating societies to receive Elements. Institutional subscribers to any of the following journals —American Mineralogist, Clay Minerals, Clays and Clay Minerals, Mineralogical Magazine, and The Canadian Miner alogist—also receive one copy of Elements as part of their 2011 subscription. Institu tional subscriptions are available for US$160 (US$175 non-US addresses) a year in 2011. Contact the managing editor (tremblpi@ete.inrs.ca) for information.

Copyright 2011 by the Mineralogical Society of America

All rights reserved. Reproduction in any form, including translation to other languages, or by any means—graphic, electronic or mechanical, including photocopying or information storage and retrieval systems—without written permission from the copyright holder is strictly prohibited.

Publications mail agreement no. 40037944

Printed in USA

ISSN 1811-5209 (print) ISSN 1811-5217 (online)

www.elementsmagazine.orgwww.elements.geoscienceworld.org

Volume 7, Number 4 • August 2011