The Field Description of Metamorphic Rocks. Dougal Jerram

This edition first published 2022 © 2022 John Wiley & Sons Ltd

      Edition History John Wiley & Sons Ltd (1e, 2013)

      All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, except as permitted by law. Advice on how to obtain permission to reuse material from this title is available at http://www.wiley.com/go/permissions.

      The right of Dougal Jerram and Mark Caddick to be identified as the authors of this work has been asserted in accordance with law.

      Registered Offices John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, USA John Wiley & Sons Ltd, The Atrium, Southern Gate, Chichester, West Sussex, PO19 8SQ, UK

      Editorial Office 9600 Garsington Road, Oxford, OX4 2DQ, UK

      For details of our global editorial offices, customer services, and more information about Wiley products visit us at www.wiley.com.

      Wiley also publishes its books in a variety of electronic formats and by print‐on‐demand. Some content that appears in standard print versions of this book may not be available in other formats.

      Limit of Liability/Disclaimer of Warranty While the publisher and authors have used their best efforts in preparing this work, they make no representations or warranties with respect to the accuracy or completeness of the contents of this work and specifically disclaim all warranties, including without limitation any implied warranties of merchantability or fitness for a particular purpose. No warranty may be created or extended by sales representatives, written sales materials or promotional statements for this work. The fact that an organization, website, or product is referred to in this work as a citation and/or potential source of further information does not mean that the publisher and authors endorse the information or services the organization, website, or product may provide or recommendations it may make. This work is sold with the understanding that the publisher is not engaged in rendering professional services. The advice and strategies contained herein may not be suitable for your situation. You should consult with a specialist where appropriate. Further, readers should be aware that websites listed in this work may have changed or disappeared between when this work was written and when it is read. Neither the publisher nor authors shall be liable for any loss of profit or any other commercial damages, including but not limited to special, incidental, consequential, or other damages.

       Library of Congress Cataloging‐in‐Publication Data

      Names: Jerram, Dougal, author.

      Title: The field description of metamorphic rocks / Dougal Jerram, Centre for Earth Evolution & Dynamics, University of Oslo, Norway, DougalEARTH Ltd, Solihull, UK, Mark Caddick, Virginia Tech, Blacksburg, VA.

      Description: Second edition. | Hoboken, NJ : Wiley, 2022. | Series: The geological field guide series | Revised edition of: The field description of metamorphic rocks / Norman Fry. 1984. | Includes bibliographical references and index.

      Identifiers: LCCN 2021052480 (print) | LCCN 2021052481 (ebook) | ISBN 9781118618752 (paperback) | ISBN 9781118618691 (adobe pdf) | ISBN 9781118618677 (epub)

      Subjects: LCSH: Metamorphic rocks–Handbooks, manuals, etc.

      Classification: LCC QE475.A2 F79 2022 (print) | LCC QE475.A2 (ebook) | DDC 552/.4–dc23/eng/20211204

      LC record available at https://lccn.loc.gov/2021052480 LC ebook record available at https://lccn.loc.gov/2021052481

      Cover design: Wiley

      Cover image: Courtesy of Susanne Schmid

PREFACE – THE FIELD DESCRIPTION OF METAMORPHIC ROCKS

      In many regards, metamorphic rocks represent some of the most complicated challenges that you will find in the field. They were obviously once igneous, sedimentary, or even different metamorphic rocks, and you may be able to interpret some of this early history at the outcrop. But they have subsequently been changed through combinations of pressure, temperature, and reaction with fluid so that they might now look radically different to their original form. In order to understand these changes (the rock’s metamorphosis), and to some extent the original ‘parent’ rock, the field description of metamorphic rocks requires careful observation and a grasp of many aspects of the broader range of the geosciences. It is not enough just to know how to identify key metamorphic minerals in the field: multidisciplinary skills borrowed from other branches of field geology, and even engineering, are increasingly essential requirements for the modern metamorphic geologist.

      This concise guide is designed to give students, professionals, and keen amateur geoscientists the key tools needed to help understand and interpret the origin and evolution of complex metamorphic systems in a focused way, while in the field. This extensively revised and reorganised colour guide builds on Norman Fry’s original version, published in 1984 as part of the (then) Geological Society of London Field Guide Series. Since 1984, much has changed in the scientific community’s understanding of metamorphic processes and in the ways that fieldwork is conducted. Accordingly, we have tried in this first colour revision to incorporate much of this newer thinking and methodology. At the same time, we have aimed to remain true to the original philosophy of a portable guide that concisely explains the basic concepts underpinning the field description of metamorphic rocks. Indeed, we have kept and built on some sections of Fry’s original text. The original version was necessarily limited by its black and white printing, and we have enjoyed updating the figures in this version: almost every figure in the original book has been replaced here or reproduced in colour. We hope that the inclusion of the new colour images and a simple, colour‐coded index system will help the reader to navigate their way through the different types, grades, and origins of metamorphic rocks. Both authors grew up with the original versions of the Geological Field Guide Series and one of us (Dougal) was even taught by Norman Fry at Cardiff University. So it has been a great pleasure, if not a long journey, to revise this field handbook, now published as part of Wiley Blackwell’s ‘Geological Field Guide Series’. We hope you find this new guide a great companion and an essential aid when confronted, perhaps for the first time, with metamorphic rocks in the field.

       Dougal Jerram and Mark Caddick 2021

Preface – Meet the Authors

      Dougal holds a 20% research professorship at the University of Oslo and is the director of DougalEARTH Ltd. He is primarily a field geologist and has undertaken fieldwork all over the world and experienced a wide range of Earth’s geology and landscapes from Africa to Antarctica. He started his geological career in the UK, where he cut his teeth on the many fundamental outcrops the UK has to offer through a

---

Скачать книгу