Palynostratigraphy of the Eocene Little River Section, Grays Harbor County, Washington

<p>A total of 27 samples from Eocene marine rocks exposed along the Little River, Grays Harbor County, southwestern Washington were analyzed for palynomorphs. Strata studied included the Crescent Formation, "Sedimentary Rocks of Late Eocene Age", and the Lincoln Creek Formation. A total of 77 micro fossil types were identified of which 32 were pollen and spores, 24 fungal remains, 18 dinoflagellate cysts, and 3 miscellaneous micro fossils.</p> <p>Based upon the stratigraphic distribution of 21 palynomorphs, three informal palynologic assemblage biozones were recognized. The oldest zone, Zone 1, of late early or early middle Eocene age, contains Platycaryapollenites, Platanoidites, Laevigatosporites type-2, trilete type-2 and D-6 dinoflagellates. Zone 2, of middle Eocene age, is recognized by the presence of Proteacidites Laevigatosporites type-2, tricolpate reticulate type-1,trilete type-2, and D-14 and D-15 dinoflagellates. Zone 3, of late Eocene age, is recognized by Tsugapollenites, Bombacacidites, Tiliaepollenites, Selaginella, Inaperturopollenites type-2, and D-8 dinoflagellates. None of the palynozones established by previous Pacific Northwest palynologic investigations were recognized in this study.</p>

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Geology

Year

1983

Author dc:creator

• Jensen, Roy E.

Contributors dc:contributor

• Lanny H. Fisk
• Knut Andersson
• H. Paul Buchheim

• Geology
• Stratigraphy
• Palynology -- Washington (State) -- Grays Harbor County; Geology; Stratigraphic -- Eocene; Geology -- Washington (State) -- Grays Harbor County.

Statement dc:rights

• This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights.

Language dc:language

English

Repository record dc:identifier

https://scholarsrepository.llu.edu/etd/1089

OAI identifier oai:identifier

oai:scholarsrepository.llu.edu:etd-1584