Modern pollen percentages. At left (“DV0”), Badwater surface sample. Other elevations represent surface samples in the Panamint Mountains (P1, P2, etc.) (Martin, 1964). The mean of samples 7 and 8 and samples 9 and 10 are displayed here, as 7 and 8 were both collected at 1880 m elevation, while 9 and 10 were both collected at 1920 m elevation.
Diagram of selected fossil pollen percentage for core DV93-1. The composite diagram on the right represents total trees (dark), total shrubs (white), composites & Cheno-Ams & grass (pattern), herbs (dark), and deteriorated & unidentified (white).
A comparison of some long climate records. (A) shows the ratio Ambrosia divided by (Ambrosia+Artemisia+Cupressaceae) (see text). (B) shows Cupressaceae percentages from Death Valley (DV) and Owens Lake (OWL). Y-axis values are reversed to show similarity to the isotopic curves. (C) shows the SPECMAP curve (solid line) plotted with the Devils Hole (DH) curve.
The dominant species of modern Death Valley vegetation zones, and their associated pollen types from Text-Figure Zone elevations are approximate. Pollen types in parentheses were absent or rare in the fossil spectra.
Palynomorph types from the Badwater surface sample, -86 m elevation. Individual types which are below 2% of the total are not listed.
Applicable U-series ages from core DV93-1 (from Ku et al., 1998).
Pollen extraction by acid digestion.RESULTS: DV93-1 POLLEN ZONES