Cordilleran Volcanism, Plutonism, and Magma Generation at Various Crustal Levels, Montana and Idaho Western Montana and Central Idaho

Title Page\r......Page 1
Copyright\r......Page 2
CORDILLERAN VOLCANISM, PLUTONISM, AND MAGMA GENERATION AT VARIOUS CRUSTAL LEVELS, MONTANAAND IDAHO......Page 5
IDAHO BATHOLITH ENVIRONMENT......Page 7
REFERENCES......Page 13
Day 1: STOP 1.......Page 15
Day 2: STOP 5.......Page 16
Day 2: STOP 3.......Page 17
Day 1: STOP 6.......Page 18
REFERENCES......Page 19
INTRODUCTION......Page 20
THE ELKHORN MOUNTAINS VOLCANICS......Page 21
THE BOULDER BATHOLITH......Page 25
DESCRIPTION OF STOPS AND ROAD LOG......Page 26
STOP 1-1: OVERVIEW OF GEOLOGIC SETTING OF THE ELKHORN MOUNTAINSVOLCANICS:......Page 27
LUNCH.......Page 28
STOP 1-3: EARLY MAFIC PLUTONS OF THE BOULDER BATHOLITH......Page 29
STOP2-1seeFig.3:JOINTS, SCHLIEREN,INCLUSIONS,AND PEGMATITES IN THE BUTTE QUARTZ MONZONITE......Page 30
STOP 2-2 see Fig. 3: CONTACT OF THE BUTTE QUARTZ MONZONITE AND THE ELKHORN MOUNTAINS VOLCANICS......Page 31
STOP 2-3 see Fig. 3: GRANODIORITE OF RADER CREEK. LUNCH.......Page 32
STOP 2-5 see Fig. 3: CONTACT OF BUTTE QUARTZ MONZONITE AND SLIGHTLY YOUNGER QUARTZ MONZONITE OF THE CLIMAX GULCH PLUTON......Page 33
REFERENCES......Page 34
CHALLIS VOLCANIC ROCKS......Page 36
CASTO PLUTON AND RELATED FELSIC INTRUSIONS......Page 40
DISCUSSION......Page 41
REFERENCES......Page 42
DAY 1......Page 43
DAY 2......Page 46
REFERENCES......Page 47