Joint 53rd South-Central/53rd North-Central/71st Rocky Mtn Section Meeting - 2019

Paper No. 23-4
Presentation Time: 8:30 AM-5:45 PM

ANALYSIS OF TUFACEOUS SPELEOTHEMS FROM BARBADOS


BARNETT, Rebecca M., Department of Geosciences, Fort Hays State University, 600 Park Street, Tomanek Hall 233, Hays, KS 67601 and SUMRALL, Jonathan B., Department of Geosciences, Fort Hays State University, 600 Park St., Hays, KS 67601

Tufaceous speleothems from Barbados were collected and split for texture analysis and geochemical sampling for stable isotopes of carbon and oxygen. These deposits are found in remnant cave walls and grow outward into the current valley, which represents a former cave passage. This outward growth causes an overall curved shape to these formations. The purpose of this study was to determine if stable isotopes varied from one side (cave) of these tufaceous speleothems to the other side (valley). Texture analysis of these deposits was conducted to determine the mechanism of growth and the cause for their shape. From this analysis, the valley side of these deposits have a more porous texture than the cave side, which is more crystalline. This observation is likely due to the photosynthetic nature of algae growing on the valley side of these formations. Further study will need to be conducted to determine the scientific value of these formations.