Carving Grand Canyon: Evidence, Theories, and Mystery

Carving Grand Canyon: Evidence, Theories, and Mystery[PDF / Epub] ☁ Carving Grand Canyon: Evidence, Theories, and Mystery ✎ Wayne Ranney – Carving Grand Canyon provides a synopsis of the intriguing ideas and innovative theories that geologists have developed over time This story of a fascinating landscape is told in an engaging style tha Carving Grand Canyon provides a synopsis of Canyon: Evidence, Kindle Ö the intriguing ideas and innovative theories that geologists have developed over time This story of a fascinating landscape is told in an engaging style that nonscientists will find inviting The story’s end however remains a mystery yet to be solved. I've just finished reading this a second time in preparation for attending a seminar by the author I've upgraded my rating to 5 from 4 stars because I can't imagine a better book on this topicWayne does a great job of weaving together the history of the naturalists and geologists who have attempted over the years to explain the evolution of the Colorado River and the Grand Canyon along with their evolving theories each one building on the earlier onesThe one thing you learn is that the history of the river and the canyon is very complex which may surprise many people At the end Wayne does a superb job of summarizing what is known for sure and what uestions still remain to be answered I wish science books had summaries like this one CARVING GRAND CANYON EVIDENCE THEORIES AND MYSTERY by Wayne Ranney is the next logical book to read after the one he co wrote with Ron Blakey ANCIENT LANDSCAPES OF THE COLORADO PLATEAU In ANCIENT LANDSCAPES the authors describe the environments in which the layers of the Colorado Plateau formed and illustrate those concepts with paleogeographic maps As you study those maps you can't help but try to impose the Grand Canyon on them since it's the feature that best exposes the layers At what point you may wonder does the canyon begin to be carved? CARVING GRAND CANYON is the best answer to that uestion It narrates the attempt by geologists to formulate a unified theory of how the Grand Canyon formed and how long it took to do so Once you've started reading it you'll realize that theory is – complicated Fortunately it's also fascinating – a story of rivers and basins faults and frost wedging lava flows and karst collapse personalities and plate tectonics If you look at a map of the Canyon from Lee's Ferry to Grand Wash Cliffs you may suspect that it's not simply a uestion of how old the Colorado River is though that's the most pertinent uestion It's a uestion of what else can happen in a region that large over millions of years during which several uniue conditions persist One of the most interesting controversies is whether a paleocanyon may have existed one that continued to be cut down to current levels in parts of the Grand Canyon The graphic on page 124 beautifully illustrates the argument that a paleocanyon existed in Mesozoic layers above Eastern Grand Canyon that have since eroded away The relatively new study of karst collapse near the Kaibab Upwarp also sheds some light on the mystery of how the river cut through the southern tip of the upwarp This book is for people whose curiosity burns when they look at the Grand Canyon trained geologists and armchair geologists alike It is lavishly illustrated with photographs cross sections maps some of which are paleogeographic and diagrams that make the text clear and easy to understand It offers a coherent answer to a uestion that is far complicated than it seems And best of all it sparks as much curiosity as it satisfies Buy two copies – one for your reference library and one to take with you as you explore Grand Canyon a place with enough wonder to fill a lifetime This is a really good book published by the Grand Canyon association and written for laypersons who want to know about how the amazing canyon came to be The longest chapter is a summary of the major geologists who developed theories that have led to our current understanding There may always be gaps in what we know and Ranney explains why but you can learn a lot There are also lots of diagrams and pictures to help outI also liked how Ranney presents the scientific process as an accretion of knowledge in which even those theories that ultimately didn't pan out helped to advance knowledge Also we see how developments in technology also clearly explained give us information and may even resurrect some abandoned theories If you're going to the canyon you should consider reading this book first so that you can fully appreciate what you see I got it at the Yavapai Geology Museum and wished I'd read it in advance I also recommend the Trail of Time and the guidebook check this out before you start the walk to see what you want to read in advance and what along the way This is THE book on the Grand Canyon Published in 2012 not only does it include up to date science but it was written by a professional geologist who works with the Grand Canyon Association Two things that I love about this book1 The images Geology is fundamentally a science of the visible and every page is bursting with diagrams maps charts illustrations models photos and other visual aids that describe what the text is saying 2 The author doesn't just give an answer Instead the premise of the book is that the Grand Canyon is a challenge and still somewhat of a mystery The author takes you on an intellectual journey through the general features of riverscanyonssouthwestetc and then spends a great deal of time touring the various ideas and hypotheses about the Grand Canyon's formation This culminates in the 2000 and 2010 Grand Canyon conferences where the author describes the main themes of geological research Only in the last chapter and the epilogue does the author paint a picture of what is currently suspected about its past After reading Beyond the 100th Meridian by Wallace Stegner and because I live in the area I got really interested in how the Grand Canyon was formed This is a great book But if I was doing it again I would read the last chapter and epilogue first then start at the beginning Ranney does a great job of giving an intro to fluvial geological processes and synthesizing several theories into something comprehensible But it's really hard to follow At least it was for me He gives it to you in bits and pieces not chronological at all In fact the only chronology he gives until the end are the chronology of theories about the canyon He does tie it all together at the end but I wish I had used that last chapter and even concise epilogue as a referenceWhat it is not a description of the layers of sediment you see as you descend into the Grand Canyon I was hoping to find something like this but this book was eually intriguing I am a person that thinks I should be a geologist in my next lifetime In other words have no geology background besidesroadside rock hounding and appreciating what the surfaces I see living in Colorado I would recommend this book to help explain 'what you see' at the Grand Canyon The author takes it back to not only the evolution of the Grand Canyon over time but interweaves the past scientists studies and thoughts regarding 'what really happened' Some things were agreeable through time some were not But I do know thisMANY of the things I knew nothing about There are some surprises in this book I enjoyed the snippets of photos and diagrams that aided appropriately to the ideas of uplift faults and various tributaries Certainly the Tertiary time period was an exhausting one too bad the dinosaurs didn't get to see it Now that I've read the booktime to go see the movie That is right I have never seen the Grand Canyon and I need to change this fact I will be referencing this book over the very short time I am on this Earth After hearing the author give an interview on the radio I was intrigued enough to get the book It is a good read with a tremendous amount of information in this small copy It did get a little deep when discussing the timeline of major events in the Grand Canyon area I increased and corrected my knowledge of river erosion Even with a layperson’s knowledge of geology there were a times a clearer explanation of a given theory might have been helpful Still it did give an overview of the theories about how the Grand Canyon came into existence and along with that a smattering of history A recent edition would perhaps have been better This is a short colorful book that tries to explain complex geological concepts in a simple way that the general public can understand What is amazing is that even though the Grand Canyon is one of the most studied certainly one of the most viewed areas of geologic interest it is still one of the least understood Yes the layers visible in the cliff walls have been dated and fairly well interpreted but the carving process is not The book explains possible processes such as headwater erosion stream piracy knickpoint erosion and stream integration it also delves into what was happening on a broader regional scale northeast flowing streams from the Mogollon Highland the uplift of the Colorado Plateau the destruction of the Mogollon Highlands and creation of the Basin and Range region glaciers faulting and local volcanism But the gap in the geologic record from 30 and 16 million years ago leaves space for many varying interpretations and theories Until new evidence comes to light the creation of the Grand Canyon will continue to be a topic of debate and study by geologists This book will help readers understand geologic processes and appreciate even the wonders of the Grand Canyon As to how it formedonly time will tell This book is an excellent history of the thoughts about the Grand Canyon formation If you want to learn the complexity of the formation of this amazing natural landscape this book will teach you the building of ideas covering it You can jump to the last chapter if you want to learn what the prevailing ideas of Grand Canyon origins are nowadays I miss some detailed maps with landscapes features mentioned in the text though I bought mine at Grand Canyon Village and it was the best book there

Carving Grand Canyon: Evidence, Theories, and Mystery
  • Paperback
  • 160 pages
  • Carving Grand Canyon: Evidence, Theories, and Mystery
  • Wayne Ranney
  • English
  • 18 August 2015
  • 9780938216827