Growth Lines and

Initially a study to determine the periodicities (or lack of periodicity) of various kinds of growth lines: "daily," "monthly," and "yearly," among others. See, for example, nos. 1, 6, 8, 9, 13 and 17 from the reference list.

This grew to encompass paleoecological aspects, for growth lines are strongly influenced by the environment, and thus preserve records of some aspects of paleoenvironments. See, for example, nos. 14, 18, 21, 26 and 31 from the reference list.

Finally, because periodic growth lines can be modified by random events, a population will show similar patterns on individual shells, providing a means of testing contemporaneity in fossil assemblages and opening a window onto the area of paleopopulation dynamics. See, for example, nos. 22, 39, and 45 from the reference list.

Current Project:

I am currently collecting additional data and refining analytical techniques for the study of paleoenvironmental and population factors in a Pliocene assemblage of Pecten stearnsii. See, for example, nos. 40 and 47 from the reference list.

Future Projects:

1. Collect additional data and refine analytical techniques to examine the effects of age on summer growth in a recent assemblage of Pecten maximus. See no. 22 from the reference list. THIS WOULD MAKE A GOOD MASTER'S THESIS FOR AN INTERESTED STUDENT!!

2. Use oxygen isotope data to supplement an ongoing shell microstructural study on annual growth lines in Mercenaria mercenaria. See nos. 31, 34 and 36 from the reference list. THERE IS ROOM HERE FOR AN ISOTOPE GEOCHEMISTRY COLLABORATOR!

G. R. Clark home page

............ e-mail ............ phone (913)532-6724 ............ fax (913)532-5159 ............
George R. Clark II, Department of Geology, Kansas State University, Thompson Hall, Manhattan, KS 66506-3201
The special contents of this page are copyright (c) 1996 by George R. Clark II

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Kansas State University | Department of Geology
October, 1996