Organic and Inorganic Geochemistry of the Petrification of Wood PDF Download
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Author: Anne Marguerite Colberg Sigleo
Publisher:
ISBN:
Category : Mineralogy
Languages : en
Pages : 158
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Book Description
Author: Anne Marguerite Colberg Sigleo
Publisher:
ISBN:
Category : Mineralogy
Languages : en
Pages : 158
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Book Description
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1016
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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 1108
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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 150
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Author: George E. Mustoe
Publisher:
ISBN:
Category : Paleobotany
Languages : en
Pages : 17
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Book Description
Petrified wood has traditionally been divided into two categories based on preservation processes: permineralization (where tissues are entombed within a mineral-filled matrix) and replacement (where organic anatomical features have been replicated by inorganic materials). New analytical evidence suggests that for most petrified wood, permineralization and replacement are not independent processes; instead, both processes may occur contemporaneously during diagenesis. Infiltration of mineral-bearing groundwater may initially cause permineralization of cellular tissues, but the wood is undergoing gradual degradation. The degree of anatomical preservation thus depends on the relative rates of mineral precipitation and tissue destruction. Rapid rates of mineralization under relatively mild Eh and pH conditions favor the preservation of organic matter. These conditions appear to be more common for calcium carbonate deposition than for silicification, based on observations of fossil woods from many localities. Because of these preservational complexities, ?mineralization? and ?mineralized? are more accurate as general descriptive terms than ?permineralization? and ?permineralized?.
Author:
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ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 664
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ISBN:
Category : Paper
Languages : en
Pages : 480
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Author:
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ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 568
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Author: Sophie Hüglin
Publisher: Springer Nature
ISBN: 3030693880
Category : Social Science
Languages : en
Pages : 215
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Book Description
Petrification is a process, but it also can be understood as a concept. This volume takes the first steps to manifest, materialize or “petrify” the concept of “petrification” and turn it into a tool for analyzing material and social processes. The wide array of approaches to petrification as a process assembled here is more of a collection of possibilities than an attempt to establish a firm, law-generating theory. Divided into three parts, this volume’s twenty-plus authors explore petrification both as a theoretical concept and as a contextualized material and social process across geological, prehistoric and historic periods. Topics connecting the various papers are properties of materials, preferences and choices of actors, the temporality of matter, being and becoming, the relationality between actors, matter, things and space (landscape, urban space, built space), and perceptions of the following generations dealing with the petrified matter, practices, and social relations. Contributors to this volume study specifically whether particular processes of petrification are confined to the material world or can be seen as mirroring, following, triggering, or contradicting changes in social life and general world views. Each of the authors explores – for a period or a specific feature – practices and changes that led to increased conformity and regularity. Some authors additionally focus on the methods and scrutinize them and their applications for their potential to create objects of investigation: things, people, periods, in order to raise awareness for these or to shape or “invent” categories. This volume is of interest to archaeologists, geologists, architectural historians, conservationists, and historians.
Author: Herbert Bucksch
Publisher: Springer-Verlag
ISBN: 3662033259
Category : Science
Languages : en
Pages : 697
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Book Description
Together, the two volumes of the Dictionary of Geotechnical Engineering (G-E, E-G) contain some 60,000 entries, with common synonyms given in the target language, where available. Similarly, additional explanations help to differentiate the headwords. Apart from general terms used in geology, the dictionary covers the more practical fields within geosciences, the emphasis being placed on mining, soil analysis, reconnaissance geology, geophysics, geomorphology, civil engineering, hydrogeology, hydraulic engineering, geological engineering, cartography, soil deposits, mineralogy, oceanography and surveying.
