The book is more than just an introduction to geology; it is an invitation to see the world in a new way.

Marcia Bjornerud’s Turning to Stone is a captivating exploration of Earth’s deep geological history and the extraordinary, often hidden, role that rocks play in shaping our planet and our lives. With clarity and passion, Bjornerud invites readers to reconsider the familiar, yet overlooked, materials beneath our feet, presenting them not as inert objects but as dynamic participants in Earth's ongoing story. In a narrative that seamlessly weaves together personal memoir, scientific insight, and philosophical reflection, Bjornerud makes a compelling case for why understanding geology is essential for understanding our place in the world.

I was immediately intrigued to read this memoir by Marcia Bjornerud, currently a Professor at Lawrence University with degrees in Geophysics and Structural Geology. I don’t get many chances to read memoirs from people in my general field of academic study much less a woman. I enjoyed reading about her travels and the various research projects she has undertaken in other countries including Norway and Canada.

I immediately loved the structure of this book with each chapter labeled with a type of rock and relating her studies, research and life experiences back to the meaning and setting of each. And since she started off in chapter one with sandstones, a rock I studied for both my undergraduate and graduate theses, I felt a quickly growing affinity for her storytelling. I really enjoyed the journey.

It amazes me that even though there is only a decade between our times of study how different our experiences were although some of that was probably a factor of location. Having worked in industry rather than academia through my almost twenty-year career, I know I’m a little behind in keeping up with the latest geological research and theories but am a little overwhelmed with just how much information I have missed. This memoir introduced me to several new concepts that I am eager to learn more about in the future.

I switched between the ebook and audiobook while reading this one. The book was narrated by Rebecca Stern. This was my first audiobook listen by this narrator, and I found her voice to be pleasant, propelling me along the narrative in a smooth and easy manner.

Thank you to Netgalley, Flatiron Books, and Macmillan Audio for a copy provided for an honest review.

A book that is part autobiography and partly science in the geology field. The book is organized rock types, each rock type being the focus of a chapter and the author fits this into this portion of her life too. Such as, beginning with being a child running to the bus with sand in her shoe leads to sandstone rocks. I liked the format. I found myself connecting more with her life than the science as I'm not that adept with geology. Some of it was too scientific, while other parts were not. A bit of a mix.

There are discussions of some of the controversies over the years, such as the asteroid hit that killed the dinosaurs. The field of geology, such as understanding of earthquakes and volcanoes, is relatively new. It comes with disagreements when new knowledge doesn’t support the current theory.

There were a few points where I glossed over the areas that got too deep in geologic terms, but a more determined reader would likely glean more if pausing and turning towards other resources to understand the terminology better. Possibly the book would work best for those with some understanding of geology, or a strong interest.

A geologist writing a book that is part life story, part story of stones makes sense. But I’m probably not the only one who wishes the two threads were separate. I found the geological information fascinating. It is not some wide overview of present day geology, but gives glimpses of the changes in the field in the past half century. The book is structured in chapters that each concentrate on one type of stone and one period of Bjornerud’s life. This allows for more detailed information about some of the rocks and how they fit in to the Rock Cycle (yes, like the Water Cycle, etc.). Although I didn’t find the autobiographical passages very interesting, the entire book is very well written and easy to read.

I really wanted to enjoy this book. I have a fascination with rocks, and am in the science field, so I thought this would be a book for me. At first, I was interested in this book. I was curious about Bjornerud's life and the connection to rocks. However, I think I was looking for a book that was more about rocks and geology and less an autobiography. So, that's probably why this didn't work for me.

I enjoyed the writing style and the quality of the writing, it is just a case of the wrong book for me.

Thanks to Flatiron Books and NetGalley for the ARC!

I absolutely loved this book. It was part memoir, part science and each part kept me turning pages. I think the author did a really amazing job at using time as a theme to tell both the story of her life / career path and also to give context to her discussions of different rocks and rock formations throughout the book. In addition to learning some new things about geology, I also learned a lot about what it is like to be a geologist. Thank you to NetGalley for providing me with an advance copy of this book in return for my opinion. It was a great weekend read!

Geologist Marcia Bjornerud shares her love of rocks, both from an academic perspective through the lens of her life and through lessons the life-cycle of rocks can teach us.

While reading this, it dawned on me that there aren’t very many pop-geology books. I can name quite a few general interest science books, and there are loads of books specific to physics, astronomy, and psychology. More recently, there’s an increasing interest in biology and chemistry, but still very few geology books for the layperson.

Unfortunately, this book doesn’t quite meet that criterion. Even to a chemist like myself, the geology terms are thrown around quite casually, which can be confusing and off-putting for the average reader. Perhaps a reader with at least an intro semester in geology in college would fare better. But if you’re patient and looks up terms often, it’ll pay off.

I really like the structure of the book, which is half autobiography and half science. Bjornerud divides her own life story into chapters, then associates each period in time with a type of rock, usually because that rock featured heavily in her location or her studies, but she then extends the correlation into metaphor.

For example, in Chapter 1, as a girl growing up in rural Wisconsin Bjornerud would get sand in her shoes walking to the bus stop, and this kicks off the chapter on Sandstone. She reflects on the legacy of rural America, both the good and the bad, including environmental abuse and racism. Their farmland used to be an expanse of old-growth white pine in the Menominee Nation. The tribe selectively harvested the trees, whereas settlers cut them all down for agriculture before becoming interested in the oil beneath. Bjornerud traces the history of the sand, from its early days as granite in the Proterozoic mountains, then a sandy Cambrian beach, then hardening into sandstone. Without all the tree roots, Wisconsin’s sandstone eroded away with every rain, so the 1930s saw the concept of soil preservation arise. Hydrogeologists became interested in its role in groundwater, determining that the sandstone filters pathogens from rainwater and creates clean water oases underground. Bjornerud also compares the increase in environmental change by humans with the social upheaval in her childhood in the 1970s, from politics to technology.

Bjornerud’s life in itself has some interesting parts, but it’s not nearly sensational enough to make a standalone autobiography. In fact, some parts are quite dull, in the sense that they are normal. Raising kids as a single mom, or feeling out of touch with the local community, moving for a new job, or even grieving, these are all events that make up a normal life. I admit I wondered several times if I even liked the structure of the book, because there’s little to make the reader care deeply for the author.

However, in hindsight I understand the structure. I realize now that Bjornerud’s life is not meant to be unique. Take any one of our lives, sensational or normal, and set it against the backdrop of the life of a rock, against billions of years, and we’re all quite small and humbled against the span of deep time. Our lives are microcosms of an even bigger story that we forget we’re a part of. Our own tumultuous life events are small fries against the transformation going on in the depths of the Earth.

My favorite part of each chapter is when she finally dives into the rocks themselves. There’s an entire world of knowledge to uncover, both with the science and the history of rocks and our understanding of them. Some of my top take-away’s include:

-Geology is a relatively new science. The age of the Earth and plate tectonics wasn’t determined until the 1950s and 60s, respectively.
-Deep sea sediments suggest that ice sheets in the northern hemisphere melted and reformed at least 30 times over 2 million years
-Turbidite rock forms a famous outcrop of rock at Siccar Point, Scotland, considered the birthplace of modern geology. In 1778, James Hutton surmised that the deformed rocks had once been in the heart of an ancient mountain range, 150 years before the concept of plate tectonics.
-The granite problem, which essentially asked, “when and how did all the Earth’s granite form,” was not solved until very recently. Multiple competing theories divided the geology community for decades.
-The extremely rare ecologite is the motive force behind tectonics, in which basalt turns into garnet-rich ecologite, which sinks slabs of ocean crust deep into the mantle.

I think Bjornerud’s primary message is to inspire us to see that the Earth is not a passive backdrop against which we live our lives. Environmentalist themes emerge — not just for the sake of our children — with the knowledge that we live in a greater ecosystem bigger in space and time than we can imagine.

Highly recommended for those with a basic knowledge in geology!

This is a tough book for me to review as it was not what I expected. I am one of those people who will stop and pick up a rock while walking on a beach, or a road, or in the woods. I will pick it up and look at it and see if it has something to show or tell me. I requested this book thinking the author might feel as I do about rocks and stones. But because the author is a scientist, they are approached, of course, scientifically. Between the authors' personal life and her professional life, there was a lot going on. I steadily became uninterested in her personal life and felt that she lost the wonder of stones. But again, I may have misinterpreted the description of the book. I thank NetGalley and Flatiron Books for the advance read.