24 of 25 people found the following review helpful:
2.0 out of 5 stars
Little Enough About the Permian Extinction, September 20, 2005
This review is from: Gorgon: The Monsters That Ruled the Planet Before Dinosaurs and How They Died in the Greatest Catastrophe in Earth's History (Paperback)
Some years back, Peter Ward co-wrote "Rare Earth," an interesting little book on the likelihood of life more complex than bacteria existing elsewhere in the universe. It was on the strength of that book -- and an interest in new work on the Permian Extinction -- that I picked up "Gorgon."
In "Gorgon," you will learn a lot about the rigors of life on a paleontological "dig" and the difficulties of extracting rock samples halfway up a cliff. You will learn bits and snippets of the author's opinions of African politics (generally PC), his assessment of (some of) his colleagues' abilities and personalities, and generic snatches of his personal life.
What you won't learn much about is the Permian Extinction. Or Gorgons -- either the pre-dinosaurian animals or the vague metaphor Ward occasionally stabs at, as a representation of the Great Extinction.
My trade paperback contained a (tiny) reproduction of a chart of various factors that Ward said explained it all. Unfortunately, he didn't bother to explain it -- which was sadly typical of the whole book.
Useful as background material for a novel about paleontologists, but not recommended as a source of information on the Permian Extinction.
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14 of 16 people found the following review helpful:
5.0 out of 5 stars
Death knell of the Gorgons, June 16, 2005
This review is from: Gorgon: The Monsters That Ruled the Planet Before Dinosaurs and How They Died in the Greatest Catastrophe in Earth's History (Paperback)
By now, almost everyone must be familiar with the discovery of the iridium concentrations at the K-T (Cretaceous-Tertiary) boundary, and the Chicxulub impact crater, first reported in 1981, that appears to exactly the right age and the right size to have terminated most of the life on Earth, sixty-five million years ago. The author of "Gorgon" began his career with field work on the proof of the quick and terrible extinction at the K-T boundary--the death knell of the dinosaurs.
However, Dr. Ward found himself more and more intrigued by an even great extinction event that occurred 250 million years ago at the boundary of the Permian and the Triassic (P/T). Was it caused by another comet or meteor strike? Did the elimination of 95 % of Earth's marine life and 70% of all land species proceed as quickly as at the K-T termination, or did it take place in pulses over a much longer period of time?
According to the author (and others), there is no credible, unambiguous evidence for an impact as is the case for the K-T extinction. What is more likely is that massive greenhouse gas emissions reduced oxygen availability, ultimately resulting in the collapse of marine ecosystems, and most of the land-based systems as well. This was possibly caused by volcanic eruptions on the supercontinent of Pangea, in what is now Siberia (the Siberian Traps).
In the final chapter of his book, "Resolution," the author puts forth two interesting observation-based theories: (1) the abundance of oxidized, reddish rock in the Triassic beds above the P/T boundary (about 50 million years worth) implies "...the oxygen in our atmosphere plunged to very low levels as it became tied up in the rocks...so low, in fact, that any poor human...would very quickly suffer from altitude sickness, even at sea level."; (2) on land at least, the near extinction of animals that didn't use oxygen efficiently, including most but not all of the mammal-like reptiles that dominated the Permian. "Heat [greenhouse effect] and asphyxiation [were] the two agents of the long mysterious mass extinction."
Except for the last chapter, "Gorgon" is light on theory and heavy on field work and proof-of-concept. Here is how geologists, paleontologists, and other scientists interact in the field, braving the heat of South Africa's Karoo Desert, the omnipresent ticks, flies, and puff adders, and the digestive challenges of bad water and mystery-meat pizza. Dr. Ward takes his readers not only on a trip through the lost world of the Permian, but also through an African culture that seems to be on the brink of chaos. He is a sensitive and at times acerbic observer of both present and deep past. "Gorgon" is a compelling, thoroughly readable story.
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14 of 16 people found the following review helpful:
2.0 out of 5 stars
Not Much There, December 17, 2005
This review is from: Gorgon: The Monsters That Ruled the Planet Before Dinosaurs and How They Died in the Greatest Catastrophe in Earth's History (Paperback)
A reader's impression of a book is often closely tied her expectations. In my case, I picked up Gorgon thinking that it would be a paleontological discussion focused on the mass extinction at the end of the Permian period - this is not the case. While the brief comments that Ward offers in this regard are not uninteresting they could be covered in a short article.
Unfortunately, from my perspective, the bulk of the text consists of personal recollections and reminisces. These types of books are not my cup of coffee - like family photo albums their appeal is normally limited to those involved. I do not doubt that these memories are important for Ward. I do not think, however, many readers will find Gorgon to be worth the money or effort.
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