Replication in Plastic of Three-Dimensional Fossils Preserved in Indurated Clastic Sedimentary Rocks

A new technique for replicating in plastic the fossils preserved in clastic rocks should now make available reliable morphologic and frequency data, comparable in quality to those derived from acid-prepared silicified faunas, for a major segment of the fossil record. The technique involves three ste...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1984-06, Vol.224 (4656), p.1425-1427
Main Authors: Zapasnik, Henryk T., Johnston, Paul A.
Format: Article
Language:English
Subjects:
Brackish
Carbonates
Etching
Fauna
Fossils
Freshwater
Latex
Liquids
Lithology
Marine
Methods
Paleontology
Plastics
Polymerization
Rocks
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Summary:A new technique for replicating in plastic the fossils preserved in clastic rocks should now make available reliable morphologic and frequency data, comparable in quality to those derived from acid-prepared silicified faunas, for a major segment of the fossil record. The technique involves three steps: the dissolution of carbonate in fossiliferous rocks with hydrochloric acid, impregnation of resulting voids with liquid plastic, and dissolution of the rock matrix with hydrofluoric acid, leaving a concentrate of plastic-replaced fossils.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.224.4656.1425