"From the author of Turning to Stone, a mediation on the stories that rock can tell us about the deep history of our planet
To many of us, the Earth's crust is a relic of ancient, unknowable history. But to a geologist, the Earth's crust, and every stone within it, is a richly illustrated narrative, telling gothic tales of cataclysm and reincarnation. How can we decode these stories?
In Reading the Rocks, geologist Marcia Bjornerud shows us. Taking the reader on an eye-opening tour of Deep Time, Bjornerud explains in elegant prose what we see and feel beneath our feet. Both scientist and storyteller, she reminds us that our home is a living thing with lessons to teach. She shows how our planet has long maintained a delicate balance between creation and destruction, and how the global give-and-take has sustained life on Earth through eons of upheaval.
Today, however, with the rapidly escalating effects of human beings on the planet, that great balance is being threatened-and the consequences may be catastrophic. Reading the Rocks reveals how heeding the messages in rocks can help us correct our course."
"Few of us have any conception of the enormous timescales in our planet's long history, and this narrow perspective underlies many of the environmental problems we are creating for ourselves. The passage of nine days, which is how long a drop of water typically stays in Earth's atmosphere, is something we can easily grasp. But spans of hundreds of years—the time a molecule of carbon dioxide resides in the atmosphere—approach the limits of our comprehension. Our everyday lives are shaped by processes that vastly predate us, and our habits will in turn have consequences that will outlast us by generations. Timefulness reveals how knowing the rhythms of Earth's deep past and conceiving of time as a geologist does can give us the perspective we need for a more sustainable future.
Marcia Bjornerud shows how geologists chart the planet's past, explaining how we can determine the pace of solid Earth processes such as mountain building and erosion and comparing them with the more unstable rhythms of the oceans and atmosphere. These overlapping rates of change in the Earth system—some fast, some slow—demand a poly-temporal worldview, one that Bjornerud calls 'timefulness.'"
