|Series||Maryland Geological Survey Bulletin -- 27|
Get this from a library! The spores and pollen of the Potomac group of Maryland. [Gilbert Jay Brenner]. The Spores and Pollen of the Potomac Group of t J. Brenner. Department of Geology, Mines, and Water Resources, Baltimore, Md., ix + pp. Illus Author: Estella B. Leopold. Origin of the Angiosperms. (Book Reviews: The Spores and Pollen of the Potomac Group of Maryland)Author: Estella B. Leopold. Try the new Google Books. Check out the new look and enjoy easier access to your favorite features Catalog of Fossil Spores and Pollen (Volume 42) distal surface distilled H20 easily disaggregated exine explanation of location ﬁg float treated HF flotation in ZnClz Group of Maryland heavy liquid method high focus ICBN interpreted as.
The spores and pollen of the Potomac Group of Maryland , Brenner, G.J. Bulletin 27 Introduction. The Potomac Group forms the oldest unit of the Maryland Coastal Plain. It consists of a series of interlensing gravels, sands, silts, and clays deposited in a continental environment. Brenner, G.J., , The spores and pollen of the Potomac Group of Maryland: Maryland Geological Survey Bulletin, no. 27, p. Summary: The Potomac Group, the basal unit of the Coastal Plain, consists of approximately feet of continental sediment that can be divided between Baltimore, MD, and Washington, DC, into the Patuxent, Arundel. Brenner, G.J., , The spores and pollen of the Potomac Group of Maryland: Maryland Geological Survey Bulletin, no. 27, p. Summary: The Patapsco Formation of the Potomac Group consists of interlensing sands, silts, and clays with the clays being highly colored and variegated (red, gray, white, and chocolate). The Potomac Group is a geologic unit that includes important aquifers in the Coastal Plain of the Mid-Atlantic region. Potomac aquifers are heavily used in northeastern and southern Maryland, as well as northern Delaware and southern New Jersey. Analyses of fossil pollen and spores provide some data to tie particular core intervals to.
Spores: Camarozonosporites rudus: Found commonly in Zone III: Gleicheniidites circinidites: Potomac Group: Appendicisporites tricornatatus: Potomac Group: Sample: – ft (– m) Both Subzone IIC and Zone III forms are found in this sample. The abundance of bisaccate coniferous pollen is a very common aspect of the upper. Bulk maceration of unconsolidated Potomac Group sediments collected from 12 samples of middle–late Albian and early Cenomanian age on the Elk Neck Peninsula, Maryland, yielded 14 genera and Pollen: In Maryland and in other states in the mid-Atlantic region pollen spores are produced by different sources that include trees in late winter and spring, different types of grasses in spring and summer and various weed types in late summer and fall of each year. As pollen spore counts increase more people develop allergic reactions. Ragweed is a known allergen; it takes . The spores and pollen of the Potomac Group of Maryland. Maryland Depareraemof Geology,Mines and WaterResourcesBulle pp. Brenner, G. J. Middle Cretaceous floral provinces and early migrations of angiosperms.