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.
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.
","abstract_html":"<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>","abstract_has_math":false,"creators":["Jensen, Roy E."],"institution":null,"degree_name":"Master of Science (MS)","degree_level":"Thesis","degree_discipline":"Geology","degree_department":null,"school":null,"contributors":["Lanny H. Fisk","Knut Andersson","H. Paul Buchheim"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1983,"date_issued":"1983-09-01T07:00:00Z","date_published":"1983-09-01T07:00:00Z","updated_at":"2026-07-24T02:52:52Z","subjects":["Geology","Stratigraphy","Palynology -- Washington (State) -- Grays Harbor County; Geology; Stratigraphic -- Eocene; Geology -- Washington (State) -- Grays Harbor County."],"languages":["English"],"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."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://scholarsrepository.llu.edu/etd/1089","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Lanny H. Fisk","Knut Andersson","H. Paul Buchheim"]},{"key":"dc:creator","label":"Author","values":["Jensen, Roy E."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"thesis:degree_discipline","label":"Discipline","values":["Geology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science (MS)"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Geology","Stratigraphy","Palynology -- Washington (State) -- Grays Harbor County; Geology; Stratigraphic -- Eocene; Geology -- Washington (State) -- Grays Harbor County."]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English"]},{"key":"dc:rights","label":"Dc Rights","values":["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."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholarsrepository.llu.edu/etd/1089"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["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.
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.
"]},{"key":"dc:title","label":"Title","values":["Palynostratigraphy of the Eocene Little River Section, Grays Harbor County, Washington"]}]}],"canonical_facts":{"dc:contributor":["Lanny H. Fisk","Knut Andersson","H. Paul Buchheim"],"dc:creator":["Jensen, Roy E."],"dc:description.abstract":["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.
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.
"],"dc:identifier":["https://scholarsrepository.llu.edu/etd/1089"],"dc:language":["English"],"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."],"dc:subject":["Geology","Stratigraphy","Palynology -- Washington (State) -- Grays Harbor County; Geology; Stratigraphic -- Eocene; Geology -- Washington (State) -- Grays Harbor County."],"dc:title":["Palynostratigraphy of the Eocene Little River Section, Grays Harbor County, Washington"],"thesis:degree_discipline":["Geology"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Master of Science (MS)"]},"updated_at":"2026-07-24T02:52:52Z"}