Text to accompany slides/photographs of Lower Cretaceous pollen and spores in sediments from the Muirkirk clay pit (Prince Georges County, MD)
Open-File Report
91-642
By: Eleanora I. Robbins
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- Document: Report (pdf)
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Abstract
The pollen and spores found in clay beds at the Muirkirk clay pit are those of ferns and lycopods, seed ferns, shrubby conifers, bald cypress-type conifers, and tree-sized conifers. Some of the ferns and conifers have modern representatives which help interpret the vegetation of this site that bears Early Cretaceous dinosaur fossils. The plants, as well as the presence of algae, fungi, and mineral remains of bacteria, show that the site was once a wetland that developed on the clay floor of a waning oxbow lake.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Text to accompany slides/photographs of Lower Cretaceous pollen and spores in sediments from the Muirkirk clay pit (Prince Georges County, MD) |
| Series title | Open-File Report |
| Series number | 91-642 |
| DOI | 10.3133/ofr91642 |
| Year Published | 1991 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | Report: 2 p.; 15 plates |
| Country | United States |
| State | Maryl |
| County | Prince Georges County |
| Other Geospatial | Muirkirk Clay Pit |
| Google Analytic Metrics | Metrics page |