Zuni Salt Lake Case Study

362 Words2 Pages
Figure captions Figure 1. Location of Zuni Salt Lake (ZSL) maar and Jemez Lineament volcanic fields. Adapted from Ander and Huestis (1982). Figure 2. Zuni Salt Lake maar (a) view into the crater from south rim looking north and (b) view of the maar tephra rim facing north. Figure 3. Satellite image of Zuni Salt Lake with study profile locations. Figure 4. Schematic depictions of stratigraphic profiles. Radiocarbon ages are calibrated and shown as one-sigma ranges in calendar years before AD 1950. OSL ages with one-sigma standard errors are expressed in calendar years before AD 1950. Figure 5. Stratigraphic exposures at profiles (a) 10-17 and (b) 12-16 showing basalt flow (unit C3) capping baked, weathered bedrock substrate (unit A),…show more content…
Stratigraphic exposure at profiles (a) 12-14 and (b) 10-34 showing Pleistocene alluvium (unit B), airfall ash (unit C1), thinly bedded base-surge deposits (unit D1), and redeposited tephra (E). The approximate vertical extents of the unit B and C1 paleosols at 10-34 are delineated. Radiocarbon ages are calibrated and shown in white as one-sigma calibrated ranges in calendar years before AD 1950. OSL ages with one-sigma standard errors are shown in yellow in calendar years before AD 1950. Figure 7. Stratigraphic exposure at profile 13-6 within the maar crater showing base-surge deposits (D1), bedded scoria from the post-maar cinder cone eruptions (unit D2), laminated lacustrine high stand rhythmite (unit D3), and recent slopewash (unit E). Inset photograph provides a close-up view of the unit D3 lacustrine rhythmite. Figure 8. Calibrated radiocarbon ages (black), OSL ages (gray), and inferred timing of ZSL eruptions. The nested brackets show 1-sigma and 2-sigma standard errors. Figure 9. Relative ages of five known latest Pleistocene to Holocene eruptions from Jemez Lineament vents. Figure S1. (a) Representative regenerative dose growth curves, with inset representative natural shine down curve, and (b) radial plots of equivalent dose values on small aliquots (2-mm plate of 150–250 μm quartz fraction

More about Zuni Salt Lake Case Study

Open Document