Phytolith Record Of Deep-Time Vegetation Dynamics: Early-Late Miocene Of Vasa Park, Washington
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Phytolith Record Of Deep-Time Vegetation
Dynamics: Early-Late Miocene Of Vasa Park,
WashingtonTony Jijina1
Caroline Strömberg1,2
Richard Dillhoff2
Thomas Dillhoff2
1 – University of Washington, Seattle, WA, 2- Burke Museum, Seattle, WA
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Mid-Miocene Climatic Optimum
Oldest
Youngest
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Oldest
Youngest
Mid-Miocene Climatic Optimum
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Vasa Park, WA
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Vasa Park, WA
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Vasa Park, WA
VASA PARK
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Outline-Geology-Phytolith-Macroflora-Pollen-Conclusions
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Vasa Park Beds
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Haugerud et al., 2003
40Ar/39Ar dating:11.4 Ma
Vasa Park Beds
late Miocene
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Vasa Park Beds
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Macrofossils
Vasa Park Beds
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Pollen andPhytolith
Vasa Park Beds
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Outline-Geology- 11.4 Ma, 3 lines of fossil evidence
-Phytolith
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What is a Phytolith?
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10µm
What is a Phytolith?
10µm
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10µm
What is a Phytolith?
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Methods
10µm
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Preliminary Phytolith Data
VS.
10µm
Forest Indicator Grassland Indicator
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Phytolith
Preliminary Phytolith Data
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Preliminary Phytolith Data
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Preliminary Phytolith Data
Oldest
Youngest
ForestIndicator
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Preliminary Phytolith Data
Oldest
Youngest PACMADGrass(Warm-adapted)
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After Hunt (1990)
Preliminary Phytolith Data
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Outline-Geology- 11.4 Ma, 3 lines of fossil evidence
-Phytolith- Forest dominated, warm-adapted grasses
-Macroflora
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After Hunt (1990)
Preliminary Macroflora Data
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Outline-Geology- 11.4 Ma, 3 lines of fossil evidence
-Phytolith- Forest dominated, warm-adapted grasses
-Macroflora- Woody, riparian vegetation
-Pollen
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Pollen
Preliminary Pollen Data
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After Hunt (1990)
Preliminary Pollen Data
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Summary-Geology- 11.4 Ma, 3 lines of fossil evidence
-Phytolith- Forest dominated, warm-adapted grasses
-Macroflora- Woody, riparian vegetation
-Pollen- Lower: dominated by upland conifer- Upper: dominated by lowland floodplane vegetation
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Future Work-Address climate in late Miocene of Pacific Northwest
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AcknowledgementsFRIENDS, FAMILY, AND COLLABORATORS
Brian SherrodSusie WinkowskiJohnathan HagerBrian BuchwitzRegan DunnElisha HarrisMarijana Surkovic DavisAvery Cook ShinnemanStephanie Zaborac-ReedDon HopkinsJeff BencaErik FredricksonKim SmithThien-Y LeJanine JijinaHenryHannah Ginn
SUPPORT AND FINANCINGStrömberg LabVasa Park ResortBurke Museum of Natural History and CultureMary Gates Research Grant ScholarshipHoward Hughes Medical InstituteUniversity of Washington Department of BiologyThe Geological Society of America Travel Grant