Transcript
![Page 1: NORTH DAKOTA Allan Ashworth Note your submission will have at least two diagrams and two sets of tables Remember to show source of pollen data below pollen](https://reader036.vdocument.in/reader036/viewer/2022082711/56649f185503460f94c2f130/html5/thumbnails/1.jpg)
NORTH DAKOTAAllan Ashworth
Note your submission will have at least two diagrams and two sets of tables Remember to show source of pollen data below pollen diagram
![Page 2: NORTH DAKOTA Allan Ashworth Note your submission will have at least two diagrams and two sets of tables Remember to show source of pollen data below pollen](https://reader036.vdocument.in/reader036/viewer/2022082711/56649f185503460f94c2f130/html5/thumbnails/2.jpg)
http://ceiwin5.cei.psu.edu/Neotoma/Explorer/
Moon Lake, Barnes County (analyst Eric Grimm)
![Page 3: NORTH DAKOTA Allan Ashworth Note your submission will have at least two diagrams and two sets of tables Remember to show source of pollen data below pollen](https://reader036.vdocument.in/reader036/viewer/2022082711/56649f185503460f94c2f130/html5/thumbnails/3.jpg)
3 8,000 Prairie with grasses, sage brush, and ragweed
2 10,300 – 8,000 Deciduous forest with birch, ash, oak and elm
1 11,500 – 10,300 Spruce forest with grassy openings
3 8,000 warmer and drier
2 10,300 – 8,000 warmer
1 11,500 – 10,300 cooler and wetter
Age at base of core 11,50010,300 Disappearance11,500 Appearance
INTERPRETATION (all ages are in yrs B.P.)
Vegetation Changes
Climate Changes
Basal age of core and appearance/disappearance of Spruce