One of the principal activities of geologists is the reconstruction of
the origin and the development of mountain regions. Few geologists
have the opportunity, however, to carry out such a huge task on their
own. It is, consequently, even more exciting when one has the
opportunity, for instance during an excursion or by putting the pieces
of a mountain puzzle together with some colleagues, to feel that even
a complex phenomenon like a mountain range can reasonably well
understood. This book can, obviously, not compete with a field
excursion, nor with a joint fieldwork, but it comes close, letting the
reader make - as indicated in the book's subtitle - a journey in time,
showing the origin and development of a middle-altitude mountain range
(in Germany). One of the reasons for the authors to publish a book on
this mountain range now, is the recent construction of a high-speed
railway (Cologne-Rhine-Main) through the area, which led to great new
exposures and, consequently, provided many new data.
The essence of the book is certainly not its high scientific value,
but rather the way in which the reader is led through this mountain
range, getting an ever better understanding of its history. But there
is more: the authors make the reader feel that not only the rocks and
the fossils have a story to tell. The landscape, the vegetation, and
even the changes made by Man add to the insight that one obtains while
reading. And even that is, in my opinion, not even the most valuable
aspect of the book; most of all it is the "feel good" attitude of the
authors that cannot be neglected by the reader. Both authors studied
at the university at Frankfurt am Main that has been named after the
famous German poet, philosopher and (amateur) geologist Johann
Wolfgang Goethe, and it seems, therefore, only logical that the
authors start their preface with a quote from Goethe's autobiography
"From my Life - Poetry and Truth": "Accidentally feeling that I liked
to, as well as in accidental company I walked often to the mountains
that, from my childhood on, I had had in front of me so remote and so
earnest. We thus visited Homburg, Kronburg, climbed up the Fled
Mountain from where the view made us want to go ever farther away."
Diving into this book is, indeed, diving in poetry and truth. The
authors provide a wealth of data, but all the time not in the way of a
textbook for professionals, but as a book that must convince the
reader that a visit to the Taunus Mountains in Germany is more than
worth while. Geology is dealt with properly, but understandably for
non-professionals, and the numerous illustrations (largely in full
color) help the reader if he does not know really about, for instance,
plate tectonics or the Milankovitch-curve-induced climate changes.
Due to this approach, the book may be considered a great promotion for
the earth sciences, seducing people to take walks (many of which are
described) and look at the nature with eyes other than those of the
tourist who comes only for rest, for culture, or for spending just a
lazy time. So many suggestions for places to visit are made, that one
could easily spend several holidays in the area learning more and more
about the geological development of this old mountain range, and
learning to see things that remained hidden before.
As the book is not aimed primarily at earth scientists, is seems
overdone to detail the contents here. Let it suffice to say that the
book starts with a 33-page preface, a second chapter about the
continental drift that the area underwent, and a third chapter about
the ever continuing changes that affect a mountain range, and that
reshape it eventually from a real mountain range (with still unknown
original altitude) to the more gentle mountains by which the Taunus is
characterized nowadays. This is followed by a chapter about the rock
types in the Taunus, a chapter about the Quaternary ice ages that
changed its morphology considerably, a sixth chapter about the various
soil types, and a chapter about the Holocene, including Man's
influence, particularly regarding agriculture. Chapter 8 explains (in
only 4 pages!) why the Taunus area is so beautiful; Chapter 9 deals
with the natural resources (including healthy springs), and the final
chapter (10) describes a huge number of walks and places to go. This
all is followed by a (fortunately short) reference list and a helpful
index. There is not much more that a reader might want.
Obviously, there are some mistakes and omissions. The stratigraphic
table does not mention the eras before the Paleozoic, and it is a bit
odd to see that the "Quaternary (old)" ranges from 1.8 million years
ago to the present-day, whereas the "Quaternary (new)" is dated at
2.6S1.8 Ma. Another (small) shortcoming is that it is not mentioned in
all captions whether the figure is taken from the Taunus or not:
geologists (particularly from Europe) will be aware that there are no
strong volcanic eruptions nowadays in the Taunus, but Figure 47 at
least suggests so. Taken all together, however, the relatively few
shortcomings and omissions are more than compensated by the very
readable text, the well printed illustrations, and the interesting
information. It is perhaps not a book that will find a place on the
shelves of many professional geologists, but if someone asks you, as a
geologist, what your work is about, then this book is the perfect gift
(at relatively low cost). Books like this one should be published in
many more countries!
A.J. (Tom) van Loon, Geological Institute Adam Mickiewicz University
Maków Polnych
Journal of Sedimentary Research (Oct. 2007)