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Department of Earth and Planetary Science, Graduate
School of Science, University of Tokyo, 1ῌ-ῌ+ Hongo,( A-type fµf67_3h' A-type fµf
Bunkyo-ku, Tokyo ++-ῌ**--, Japan.
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23 F ( iLtF (j 

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Flow <QR'().)M& QS7"T8 z$ Uz !  $I
< V' 97 "87  W$ |+ +)M IX$K"7 $IY'<N))$8#  <KF"Zt1[\]:}..$^7))$_<PK.Q`&3 PK.+LM
C ,

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North Crater Flowa&\ .U9:;< 45&$I.U9:;

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^_

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&'()*+,-./012&30#7589:;<@ North Crater Cone d<HCone c_d

Inferno??8< Craters of the Moon456/50WX eH ?"f& 1;<sC b?

gH $I /0]hi r Inferno

=>7< &<@A&7

7B Great

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KLM

'<% ,*** ()D$  King’s Bowl
Lava Field " Wapi Lava Field 3.U&< Craters?"?$I< Craters of the Moon Lava Field &@A7< % 0*** ()]9Z BigCinder Butte "  $¡ - km, o¡ + km, *8of the Moon Lava Field  +3,. (/V8 Craters¢Z ,.* m PK.Q

of the Moon 50WX (STOP.)

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&@ ¤q&3
Craters of the Moon 50WX

3 ¥r&

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tZ7§&3



8#  Craters of the Moon Lava Field  8 $?§< +3/* (u¨&:}©v1 D

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%¬&A.)¦5z­ ®¯,# ©vn{®¯°/
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Arco 8 ,*   8Y H " ±|DDrsC st)upqE v;H ?"&$}2_N²~|e\w North Crater Trail0]y7 ^_5\#8 mx/North Crater Flow < %,*** ()]9ZPK.Q (North Crater Cone)M"  ] 0 c%
Zone &3?³< Arco RifteM"72´< 1]9ZcµzQkH ?³

c d494 -p n ¸:1RS& Mike McCurry. ^ $ r P          Big Southern
Butte < Cedar Butte.

 



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'#_`d$ 3J
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Tu# 3J ,/**km   Huckleberry Ridge ngl

10* m   0 1*2$-** Ka $3

3/0* km4 5 $

6$*7

!

"84

Huckleberry Ridge- I , ` +.- Ma $3

Mesa Falls Tu# 3J ,2* km-  Henry’s Fork(Island Park) ngl K +0 km

I-

9:1* ;;< =>*,-?,-@` *.0. Ma $3)  AB Big Southern Butte $% &+,*** km- RMngl (2/./ km) Cedar Butte (STOP/) $C .** Ka 3D EF

 (G$ Cedar Butte 5$H,: 4 4IJ1* K L,0

 .WD LM$NCOP  LMQRSTU!

V,-"W/J V#4X$ 1*  ;%
&0'4()

YZEF&;<4) = [= *\ ]=4 & ^_M`=

+1* ,a-b$cd*4ef

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 ;J-L3N$!lq4 

3MJ +223M

B(   .
AB Island Park $% & Lower Mesa
Falls < Upper Mesa Falls (STOP0) $*1 R.* N¡#¢:1*£A~MDBob Christiansen (USGS) RS T)d4-ghM ijklR m `noM QpqR,<3MEF ¢:  ;¤¥-d ./01 '20'4()

3MUJ

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014

Huckleberry Ridge nglVngl¦ r;<4) /-$ ;§Iw4Z<x,Z5y6$t  7./ , `L/J

Dz8$Y:1/J {9:;4l¦CW¨d0'C |}~-b$< *{9 &;<4)$ « =>$t44 ?@ /J,** O$)  '#  , PQN$7;: Henry’s Fork ng

1* Henry’s ©ª1XY&()RfM¬lR

(Mesa Falls Tu#) ./4Z*1*  #0$I

1A00'4-$d: 014C B,-- `$3C$\SR!4+,r-J  SR! ':ª$ RMngl¡ *.,Ma $1* <D  , E43;J Cedar Butte;%

1*

wwFC4 , ;0'K Cedar ButteM$H,: rV R

Lava Creek Tu#XY&()@)  ­Gerrit Basalt 4r-J

RM®!¯°±CAB²¢ ,* ³[´$ 0* km \]µ(West Yellowstone) ,-¯°A$: V8¶· +/ W ?A©(¶·¸¹º»¼495-ῌ/ ῍ῌ . ῎῏/ Madison JunctionTu#89& Lava Creek\] (STOP2) EQR7,' H \]

LD7,@A 1./+3/3 ^NoG2,\$ \] BiC _7,`EaIo
QR$J,' \] b7cdefLg7

M&' b $ 'f2&` 2h` CoM,' 'jdCoM& <k`2i12h`CoMCM' \] 7 .Kb7MCMlm EC n57,$%&>op$J,'4 /qr2,s

#E6J7X& Old Faithful Geyser.

(STOP3) $   2,32* km- !"

+%, ./ # $%&' ()*-$%&' +21, ,,*** m012 +312 .34

12,./ $%&' /567,
 89& Upper Geyser Basin (STOP1)

$%&'$:;< =>? @(_Artist Point

Lower Falls Ist !4 0#

3.m

E5&HI$J,' s¡?¢£{Q¤ !

.2* Ka#  57,

Canyon Flow Eu¥v9&HI${Q12 -* km V,o-1txK' H @.** my@ w

yyQ EP#Iz<l{|EEW|7,,q$% IMz3T}~ICoM&' uUpper Geyser Basin ¦§AB(ACD + !E"F&#G$E5&HI$J&z'%&  %KH L&'7M&' NK()12u ©©(ªuE«}7¬)©­l2&' ®,*+,E + -9&HI$ OIPD. #G$E

l25&¯lu ­_uIxl7

QR9&HIS/$%&' *+, 0T%&.$jl2&'+ 123C:;IUV2& Old Faithful Geyser !4 /#+W

5$. !l#E0* m 6J7X&'H :; YZ +** : OIPD+ :[ !
# $6J57%&' :;

58: -1CD\9WO]+$
5:8^_`abcd;CDe<12M&' H =1* m f$3*>=9

#E¨lI7 n

Norris Geyser Basin (STOP+*)7 8'$/\7K#°±Ho,L$%&'  ,q # =U /\-K
7M:;qiI{Q12M&' H NzC-² ³´2M,' Steamboat Geyser

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>? CDE[XP$= 5TEM
,q$%&'.

/ :;$ 2  + UU µx$ 5%

4 0sI Lower Falls.

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dR ^]ef$ Butte  Berkeley Pit (STOP+-) 345 ghijk*r Butte  +20. El GX g   {m*`n+ \ ojp5$

Berkeley Pit d,..

km+.1 km, q //* me 5j + q r

\Asgj +3// E +32, EXt ; 1

Terrace Mountain 21a8b]

:c5 \uS*vwt 5  @
tx2y2*Nzhi{ |t .*  +,* m      

/ +.  t *#E ^]/2 d898at&=e  A

! " #$ %&'()
* + ,-   ./01/2345

 (0, Ma,S} ~A (12 Ma).2 Ma) D5Ag} 5 A I-type  AS

j¡Q¢J> J*]F

6789%&'  5£#¤$ ¥@]F*Wo

Obsidian Cli# (STOP++) :  ;$W¦ `/J A §$S¨5)

*< : - =>8?

hi*k D5 ©@ *.+2 Ma   !A"A BCDE,D . m $5 : g '«¬yw   ­a92{m; +* m *#E

 J$%&'( )*%I8&H? 5$

$FGH:  K+, !A"AL-MD5 NE5$:
Cliff :D5`/"®$ o 34.Sm J£#¤C( ®5$

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Smith, R. B. and Braile, L. W. (+32.) Crustal structureand evolution of an explosive silicic volcanic system at
Yellowstone National Park. In Explosive Volcanism : Inception, Evolution, and Hazards, National Academy
Press, 30῍+++.
Smith, R. B. and Siegel, L. (,***) The geologic story of
Yellowstone and Grand Teton National Parks. In
Windows into the Earth, Oxford University Press, NewYork, ,.1 pp.