The Exhibition "Amber - Fossil Resin" PDF Download
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Author:
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ISBN:
Category :
Languages : en
Pages : 33
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 33
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Author: David A. Grimaldi
Publisher: Abrams
ISBN:
Category : Nature
Languages : en
Pages : 224
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Book Description
An illustrated examination of amber, fossilized translucent tree resin.
Author: Ken B. Anderson
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 334
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Book Description
Reports the state of the art in chemical studies of ambers, including structural characterization, isotopic composition, maturation studies, resinite derived oils, and amino acid distributions. Discusses aspects of the biological, geological, petrology, and technology of fossil resins. Presents a diverse summary of the current knowledge of the nature and properties of fossil resins.
Author: George Poinar
Publisher: Addison-Wesley Longman
ISBN:
Category : Nature
Languages : en
Pages : 256
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Book Description
In passages that read more like an Indiana Jones screenplay than scientific research, the Poinars describe how their hobby-turned-obsession ultimately led to a breakthrough scientific finding: the discovery of preserved insect DNA in amber. Photos.
Author: George O. Poinar
Publisher: Stanford University Press
ISBN: 9780804720014
Category : Science
Languages : en
Pages : 388
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Book Description
"Amber is a semi-precious gem that is formed over eons by natural forces out of the resin of trees. Human fascination with amber dates back to prehistoric times, when it was probably considered to have magical powers and was used for adornment and trade. Amber amulets and beads dating from 35,000 to 1,800 B.C. have been found, and where they have been found (for example in graves hundreds of miles from their chemically determined origins) has often helped to establish ancient trade routes." "The preservative qualities of plant resins were well known by the ancients. The Egyptians used resins to embalm their dead, and the Greeks used them to preserve their wine. Amber often preserved fossils, frequently in a pristine state, of all kinds of animal and plant organisms that made contact with the sticky substance and became trapped in it. These fossils include such fragile organisms as nematodes and mushrooms that ordinarily are not preserved under normal processes of fossilization, as well as larger organisms like scorpions and lizards, and the fossils are preserved in their full three-dimensional form, complete with minute details of scales, mouth parts, antennae, and hairs. It has even been suggested that viable DNA may persist in some amber-trapped organisms." "This book is a compendium of all that we know about life found in amber. It surveys all life forms, from microbes to vertebrates and plants, that have been reported from amber deposits throughout the world, beginning with the earliest pieces dating from some 300 million years ago. It also describes the formation of amber and the location, geological history, and early exploration of the major world amber deposits, including those still being worked today." "The book also provides practical information on how to determine fake amber containing present-day forms of life. It can serve as a beginning for tracing the geological history of a particular group of animals or plants or even reconstructing ancient paleoenvironments, and because amber fossils are preserved so completely, in a transparent medium, they can be intimately compared with related living species. Finally, the book discusses what amber fossils can tell us about evolution and speciation, cellular preservation, and paleosymbiosis." "The book is illustrated with 37 color photographs, 154 black-and-white photographs and drawings, and 8 maps."--BOOK JACKET.Title Summary field provided by Blackwell North America, Inc. All Rights Reserved
Author: Barbara Kosmowska-Ceranowicz
Publisher: Archeobooks
ISBN:
Category : Science
Languages : en
Pages : 296
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Author:
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ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Muzeum Ziemi (Polska Akademia Nauk)
Publisher:
ISBN:
Category : Amber
Languages : en
Pages : 66
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Book Description
Author: David Penney
Publisher: Siri Scientific Press
ISBN: 0955863643
Category : Amber fossils
Languages : en
Pages : 306
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Book Description
Author:
Publisher:
ISBN:
Category : Amber
Languages : en
Pages : 0
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Book Description
The deterioration of fossil resins (crazing, cracking, and darkening) was investigated by comparing the effects of one year of accelerated aging--specifically intensive exposure to light, heat, and fluctuating humidity, both individually and in combination--on samples from several natural resin deposits. These included two Cretaceous ambers (from Myanmar (Burma) and central New Jersey), two Tertiary ambers (from the Baltic and the Dominican Republic), and Holocene copal from Zanzibar. The five resins were chosen for their disparate ages and botanical origins (and thus chemical and physical properties), as well as their paleontological significance. In all cases, pronounced deterioration occurred under combined exposure to light and fluctuating humidity, based on surface crazing and a decrease in absorbance of light in the UV region (360-400 nm). While crazing did not visibly occur in cases of fluctuating humidity in dark conditions, or UV exposure alone, spectrophotometric evidence indicates that some deterioration did take place. Yellowing after exposure to elevated temperatures occurred in all samples tested, with the exception of Burmese amber. All four true ambers exhibited a decrease in UV absorbance after exposure to heat (while copal actually showed an increase). The samples from the five deposits represent three chemical subclasses of fossil resins, and each of the resins reacted differently to the various aging conditions, with New Jersey amber particularly unstable. Based on these results, amber collections should be stored in an environment with stable humidity, relatively low heat, and minimal exposure to light. Anoxic sealing and storage, and particularly embedding amber samples in a high-grade epoxy, may be beneficial, and further investigation is indicated.
