Date of Award

12-12-2018

Degree Type

Thesis

Degree Name

Master of Science (MS)

Department

Geosciences

First Advisor

Dr. Lawrence Kiage

Second Advisor

Dr. Daniel Deocampo

Third Advisor

Dr.Brian Meyer

Abstract

A 3.5 m radiocarbon-dated sediment core was recovered from the Kapkanyar mire, Cherangani Hills, Kenya, to reconstruct the paleoclimatic and paleoenvironmental variations in Tropical East Africa since the last glacial maxima. Through a multi-proxy approach of pollen, elemental geochemistry, and LOI analysis, different deductions were made based on the relationship of the patterns exhibited by each proxy. Associations of varying pollen type groupings: the arboreal, herbaceous and shrubs were used to infer the prevailing paleoclimates considering the vegetation-climate relationship that has been observed and exploited in pioneering palynological studies. Findings from this study reveal notable climate dynamics of sub-orbital scale global climate signals including the East African monsoon signals, the African Humid period (16Ka-6Ka) and Pleistocene aridity events such as the Younger Dryas (14Ka-12Ka). Although anthropogenic activities are observed to be a principal driver in environmental change, it is evident that they do not entirely oust natural background climatic changes.

Available for download on Thursday, December 05, 2019

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