Question

How do present-day direction and speed of P717 relative to the NNR reference frame compare with your estimate of the average direction and speed of the North American Plate relative to the hotspot during the past 13.8Myr?

2ontana Yellowstone National Park 0.6 Yellowstone National Park 4 3 10.3 12.5 38 Figure A2.3.1 (b) How do the present-day direction and speed of P717 relative to the NNR reference frame compare with your estimat of the average direction and speed of the North American Plate relative to the hotspot during the past 13.8 Myr? 4. REFLECT & DISCUSS How do hotspots help us understand plate tectonic processes and rates? 60

Answer 1

NAVN SAUE RS 99g On figure 13 8 myr caldera and the o6 myr Caldara Is abaut 11cm indicades Hbat 20n km in Idaha and the distance the middl e of tha the bar scale an the roap by abaut stades is represented on the map adgaant we want onow the middle 3. cm the distance in lem d betweah the huo austermast caldara in thes thrnc Call the distance km. afwe pparch paperbond pep poblem &tate that 200 km 18 3.9 cn as e Cah Cm is to /1-0 cm han ce S64 km (Ασ0XiLoj.g 11 Cenvert lungth in kh bocm $64 00 O00 Cm Naw wo 564 X100000 cm/km 13& Myr 13,200, 6yr 122 myr 0-6 myr 564.00po0 13,200,0o Clyr43 clyr rouanded rem 447 S amarican plate maben in femed Ya loustone The rate af North nelabive to tho myr h a6 myr bean abauct 4:3yCmlgr hatspat Stimated Aam 13.8 to hame

LEARN ENT ENGLISH NAVNEET Ca) the aunent sprad df aps yelloshone telabve ho tha NNR staban PTn reference frame Spead 08202147e3 -690s b) The aument ourechon OF P7 helahve to NNR is sintiar to trend the west-Spadthue&t specd Calculated much& lauer Compared uoith 43 cmy yr the o Yellaudrane fram he aps e xtend bat the Calderas dlata Hotspets and hats pot drals on plotes prouiole frame cthatis usefu in Raflaet 4 DRSCun refe rence characerizing yha haabbn af plata& relahve -to earth18 dap Intenbr balouwhe pla