Kenneth M. Towe

Smithsonian Institution

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Laurel M. Bybell

University of Dayton

William W. Hay

University of Colorado Boulder

Stefan Bengtson

Swedish Museum of Natural History

Hans Hofmann

The University of Texas at Austin

Bruce Runnegar

Planetary Science Institute

Carol Mankiewicz

Beloit College

M. A. Fedonkin

Geological Institute

Charles W. Harper

University of Oklahoma

Philip G. Malone

U.S. Army Engineer Research and Development Center

Kirsten A. Seaver

Palo Alto Institute

Cooperative Institutions

Smithsonian Institution

National Museum of Natural History

United States Geological Survey

University of California, Los Angeles

Harvard University

Planetary Science Institute

NASA Astrobiology Institute

University of Wisconsin–Madison

Indiana University Bloomington

University of California System

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Research Field

Biomineralization

Science (1977)

Kenneth M. Towe

10.1126/science.196.4296.1311

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Citations (2)

On Biomineralization. Heinz A. Lowenstam and Stephen Weiner. Oxford University Press; New York. 1989. ix + 324 pp. $57.00. - Biomineralization. Cell Biology and Mineral Deposition. Kenneth Simkiss and Karl M. Wilbur Academic Press, Inc.; San Diego. 1989. xii + 337 pp. $69.95.

Paleobiology (1990)

Kenneth M. Towe

An abstract is not available for this content so a preview has been provided. Please use the Get access link above for information on how to access this content.

10.1017/s009483730001023x

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Citations (3)

Variations in clay mineralogy across facies boundaries in the Middle Devonian (Ludlowville) New York

American Journal of Science (1963)

Kenneth M. Towe Ralph E. Grim

A series of essentially time-equivalent shales and sandstones from the Middle Devonian Hamilton Group in New York State was traced and collected from those rocks representing the offshore marine environment through the nearshore and brackish water deposits into the nonmarine red bed facies to the E. The samples were studied by means of X-ray diffraction, X-ray fluorescence, and electron microscopy. The results of these analyses were treated statistically for reproducibility and significance of trend. The data indicate that the clay mineralogy of the shales and sandstones consists of dominant illite and subordinate chlorite. The chlorite is more susceptible to diagenetic change than is the illite. In the transition from the nonmarine to the marine environment, the evidence indicates that detrital chlorite is being supplemented by a diagenetic chlorite that seems to form more readily in the shales than in their associated sandstones. Subtle lateral variations in the clay mineralogy are discussed. Both illite and chlorite show a decrease in c-axis and an increase in a-b axis dimensions with distance from the source. Total Fe content decreases with distance.

Illite

Devonian

10.2475/ajs.261.9.839

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Citations (8)

Ultrastructure of calcite decomposition in vacuo

Nature (1978)

Kenneth M. Towe

10.1038/274239a0

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Citations (45)

Lepidocrocite Iron Mineralization in Keratose Sponge Granules

Science (1968)

Kenneth M. Towe Klaus Rützler

Reddish-brown granules embedded in the spongin fibers of some keratose sponges consist of very fine crystallites of poorly organized lepidocrocite, γ FeOOH. This is the first occurrence of crystalline iron mineralization in the phylum Porifera and the first indication of hard tissue formation among the Keratosa.

Lepidocrocite

Sponge

10.1126/science.162.3850.268

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Citations (36)

Photochemistry in the Primitive Solar Nebula

Science (1993)

Kenneth M. Towe

10.1126/science.261.5124.1058

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Citations (11)

Biomineralization: Silicon and Siliceous Structures in Biological Systems . Papers from a meeting, Richmond, Va., Dec. 1978. Tracy L. Simpson and Benjamin E. Volcani, Eds. Springer-Verlag, New York, 1981. xvi, 588 pp., illus. $98.90.

Science (1982)

Kenneth M. Towe

10.1126/science.216.4552.1310.a

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Citations (0)

Sea Urchins as Crystallographers

Science (2006)

Kenneth M. Towe

In their Perspective “Choosing the crystallization path less traveled” (12 Aug. 2005, p. 1027), S. Weiner et al. emphasize the significance of a disordered amorphous precursor phase in a biological strategy for making “beautifully sculpted carbonate minerals.” Size and sculpted shape are

Amorphous calcium carbonate

10.1126/science.311.5767.1554

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Citations (14)

Skeletal Calcite in Living Scleractinian Corals: Microboring Fillings, Not Primary Skeletal Deposits

Science (1976)

Ian G. Macintyre Kenneth M. Towe

Primary (astronomy)

10.1126/science.193.4254.701

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Citations (37)

Stratospheric Ozone Trends

Science (1992)

Kenneth M. Towe

10.1126/science.257.5071.727.a

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Citations (0)