This is a review of Vineyards, Rocks, & Soils – The Wine Lover’s Guide to Geology, by Alex Maltman, a book published earlier this year, by Oxford University Press which probably explains the unnecessary comma in the title. I picked it up recently from Wordery for just over £20.
My first impressions were very favourable. It is what I have come to think of as a classic-style book: with text organised in a logical sequence and designed to be read linearly from beginning to end. And the illustrations support the text rather than being the main focus of the book. Call me old-fashioned, but that is the way I like the world, and I already have more than enough books for the coffee table thank you. My only criticisms about the presentation is that the text on some of the illustrations is difficult to read due to its size and/or poor contrast, and that the colour illustrations are bound as plates in the centre for the book. I appreciate this is done to keep costs down, but it nevertheless makes the book less convenient to use. Close to the relevant bit of text, there are also grey-scale versions of the plate illustrations, but the grey-scale figure captions do not reference the plates, so I was more than a little bemused to see a grey-scale image used to illustrate the “striking red color” of the terra rossa soil, without realising the image also existed in colour elsewhere. Neither do the colour images reference the grey scale versions, or even duplicate the figure captions, so if you try browsing the colour plates you have no idea what you are looking at. (In case you are wondering, if there is a colour version of the figure it is the main text that links the two versions, by referencing both of them.)
The book starts at the atomic level, and works its way up in scale through two chapters about minerals (the chemical compounds that comprise rocks), then moves on to the three types of rock (sedimentary, igneous and metamorphic). That is followed by a couple of chapters about folds, faults and joints in rock, and how geology influences landscape. In this initial two-thirds or so of the book, there is little mention of how the geology influences wine, but the author does take pains to give examples of the minerals, rocks and landscape features under discussion in well-known wine regions and vineyards, and also notes how the geological terms are used on wine labels and in promoting the wines.
Building on that basis, the rubber then makes firmer contact with the road as we learn about how this geology affects vines and wines. Largely it is indirectly through the soil, so we look at how soils are created, mineral nutrients, minerals in wine, and a more general look and the concept of terroir. This is followed by a chapter on geological time, and the names of the geological periods. This seems like an odd place to discuss geological time, and to an extent the author seems reluctant to discuss it at all, as he maintains the age of the rocks has no bearing on the soils, vines and wines. But it is nevertheless a favourite topic of wine-writers, and of people promoting wines and wine regions, so he thought it should be mentioned. Finally, the book ends with an epilogue discussion of the how the geology of the vineyard affects its wine’s taste.
At the end of the book, I felt I had grasped the broad thrust of the main geological content, but I must admit I skipped through some of the detail, and very quickly forgot some detail I did concentrate on. But I still have the book, and with its excellent index, and use of a bold typeface to indicate where new concepts are explained, it will be good as a reference work to help keep myself geologically sound in my writing.
Maltman seems to have become a bit of a bête noir amongst proponents of minerality and terroir, at least those who see things in black and white terms. But I think his attitude as expressed in this book strikes the right balance in a very measured and tolerant way. Nevertheless, and quite reasonably in my opinion, he does maintain a degree of scientific scepticism. I tend to agree with him on most of these issues of debate.
Also, while pointing out that wine people often do not use geological terms correctly, I think he is also very understanding, admitting that the subject can be very confusing, and that even geologists change their minds and do not always agree amongst themselves. However, when he sees important geological errors in the wine world he is keen to flag them up. A good example is the common confusion between the very different rocks called tuff (volcanic) and tufa (precipitated from cold water).
My final point is that Alex Maltman is an academic who has a wealth of experience in the teaching of geology, and it shows. He knows how to develop the subject in a logical way, how to explain topics that are likely to confuse, and how to lighten the mood with the odd anecdote. And he writes with authority. This is in marked contrast to the more journalistic style of writing where the author travels the world to “find out”, recording interviews with experts en route, and often requiring the reader to fill in the gaps and assemble everything to make a coherent whole. That journalistic style appears to be increasingly popular – but it is not for me.