Title

Aragonite Crystals within Codiacean Algae: Distinctive Morphology and Sedimentary Implications

Document Type

Article

Publication Date

2-11-1972

Publication Title

Science

ISSN

0036-8075

Volume

175

Issue/No.

4022

First Page

624

Last Page

626

Abstract

Morphologic studies of single crystals of aragonite within Codiacean algae reveal characteristic crystal forms produced by two distinctly different modes of calcification. Diagnostic serrated crystals (1 micrometer in length) of aragonite originating within the extracellular sheaths of capitular filaments are incorporated into modern lime sediments and may serve as effective tracers for particles of algal origin. Intracellular calcification within Penicillus dumetosus, previously unreported, is represented by doubly terminated aragonite crystals ranging in size from 48 to 160 micrometers.

Comments

©1972 by the American Association for the Advancement of Science

DOI

10.1126/science.175.4022.624

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