Doctoral Dissertations


Walaa K. Awad

Keywords and Phrases

Biostratigraphy; Dinoflagellate Cysts; Paleoclimate; Paleoenvironment; Southeastern Florida; West Africa


"The transition from greenhouse conditions (Paleocene-Eocene Thermal Maximum, PETM) to icehouse conditions (Early Oligocene) is not well documented in tropical-subtropical regions. One hundred and five samples from Ocean Drilling Program (ODP) Site 959 (Hole 959A and Hole 959D) in the Cote d'Ivoire-Ghana Transform Margin, Alo-1 Well in the northern Niger Delta (Anambra) Basin, Nigeria, and W-17001 in southeastern Florida were studied for their palynological contents. Dinoflagellate cysts were mainly utilized for age refinement and to detect subtle changes in paleoenvironment and paleoclimate during the Paleocene-Early Eocene (ODP Hole 959D and Alo-1 Well) and Late Eocene-Early Miocene (ODP Hole 959A and W-17001). Palynofacies analysis and lithologic descriptions supplemented palynomorph data for paleoenvironmental reconstructions in ODP Hole 959A and W-17001. In ODP Hole 959D, five biozones were erected, a Late Paleocene hiatus event was identified, four new dinoflagellate cyst species were formally named, and an outer neritic paleoenvironment was inferred. The paleoenvironment was shallower (inner neritic) in the Alo-1 Well which yielded two new species and had four biozones. Five biozones were established for the Late Eocene-Early Miocene interval in ODP Hole 959A, proposed the Late Eocene as a new age assignment for lithologic subunit IIB, noted a hiatus event upsection, and observed new biostratigraphic ranges for two dinoflagellate cyst species. A deep paleoenvironment with relatively cold-water masses during the Early Oligocene and hyperstratified conditions was proposed. Two hiatus events and fluctuations between restricted marine and open marine paleoenvironments were inferred in the W-17001"--Abstract, page v.


Oboh-Ikuenobe, Francisca

Committee Member(s)

Hogan, John Patrick
Wronkiewicz, David J.
Yang, Wan
Edwards, Lucy


Geosciences and Geological and Petroleum Engineering

Degree Name

Ph. D. in Geology and Geophysics


American Chemical Society
Missouri University of Science and Technology. Department of Geosciences and Geological and Petroleum Engineering


Missouri University of Science and Technology

Publication Date

Spring 2018

Journal article titles appearing in thesis/dissertation

  • Early paleogene dinoflagellate cysts from ODP Hole 959D, Cote D'Ivoire-Ghana Transform Margin, West Africa: New species, biostratigraphy and paleoenvironmental implications
  • Dinoflagellate cyst assemblages, biostratigraphy and paleoenvironment of a Paleocene-Early Eocene sedimentary succession in the northern Niger Delta Basin: Comparison with low, mid and high latitude regions
  • Late Paleogene-Early Neogene dinoflagellate cyst biostratigraphy of the Eastern Equatorial Atlantic
  • Paleogene-Early Neogene paleoenvironment and paleoclimate reconstruction based on palynological analysis of ODP Hole 959A, West Africa
  • Late Eocene-Early Miocene palynomorphs from the Ocala Limestone, Suwannee Limestone and Arcadia Formation in W-17001, Southeastern Florida, USA: Preliminary biostratigraphy and paleoenvironmental reconstruction


xix, 269 pages

Note about bibliography

Includes bibliographic references.

Geographic Coverage

Southeastern Florida; Cote D'Ivoire-Ghana; West Africa

Time Period

Paleogene; Neogene; Paleocene; Eocene; Miocene


© 2018 Walaa Kamaleldeen Awad, All rights reserved.

Document Type

Dissertation - Open Access

File Type




Thesis Number

T 11265

Electronic OCLC #