|
CLICK ON A COLORED AREA OF THE GEOLOGY MAP TO SHOW INFORMATION HERE |
|
wtr |
--- |
water |
--- |
|
ice |
Holocene |
ice |
--- |
|
Qf |
Holocene |
artificial fill, including
modified land |
--- |
|
Qls(i) |
Holocene |
mass-wasting deposits |
incipient blockslides |
|
Qa |
Quaternary |
alluvium |
--- |
|
Qls |
Holocene-Pleistocene |
mass-wasting deposits,
mostly landslides |
--- |
|
Qls(a) |
Holocene-Pleistocene |
mass-wasting deposits |
rock avalanche deposits |
|
Qls(m) |
Holocene-Pleistocene |
mass-wasting deposits, other
than landslides |
mass-wasting deposits, other
than landslides |
|
Qp |
Quaternary |
peat deposits |
--- |
|
Qta |
Quaternary |
talus deposits |
--- |
|
Qvb(wc) |
Quaternary |
basalt flows |
White Chuck cinder cone,
Glacier Peak |
|
Qad |
Pleistocene |
alpine glacial drift,
Fraser-age |
--- |
|
Qad(p) |
Pleistocene |
alpine glacial drift,
Fraser-age |
glacial and protalus
deposits |
|
Qga |
Pleistocene |
advance continental glacial
outwash, Fraser-age |
mostly Vashon Stade in
western WA; unnamed in eastern WA |
|
Qgl |
Pleistocene |
glaciolacustrine deposits,
Fraser-age |
mostly Vashon Stade in
western WA; unnamed in eastern WA |
|
Qgo |
Pleistocene |
continental glacial outwash,
Fraser-age |
mostly Vashon Stade in
western WA; unnamed in eastern WA |
|
Qgpc |
Pleistocene |
continental glacial drift,
pre-Fraser, and nonglacial deposits |
--- |
|
Qgt |
Pleistocene |
continental glacial till,
Fraser-age |
mostly Vashon Stade in
western WA; unnamed in eastern WA |
|
PLva |
Pliocene |
andesite flows |
--- |
|
PLMida(1) |
Pliocene-Miocene |
intrusive dacite |
--- |
|
PLMida(2) |
Pliocene-Miocene |
intrusive dacite |
--- |
|
Mida |
Miocene |
intrusive dacite |
--- |
|
Mit(s) |
Miocene |
tonalite |
Silver Creek, tonalite of |
|
Mix(cg) |
Miocene |
intrusive breccia |
Conglomerate Point,
intrusive breccia of |
|
Mvc(k) |
Miocene |
volcaniclastic deposits or
rocks |
Kyes Peak, breccia of |
|
Mvt(e) |
Miocene |
tuffs and tuff breccias |
Eagle, tuff of |
|
MOig(g) |
Miocene-Oligocene |
granite |
Grotto Batholith, granite of
San Juan Creek |
|
MOig(s) |
Miocene-Oligocene |
granite |
Snoqualmie Batholith |
|
MOig(sh) |
Miocene-Oligocene |
granite |
Snoqualmie Batholith,
granite of Mount Hinman |
|
MOigb(g) |
Miocene-Oligocene |
gabbro |
Grotto Batholith |
|
MOigb(s) |
Miocene-Oligocene |
gabbro |
Snoqualmie Batholith |
|
MOigd(g) |
Miocene-Oligocene |
granodiorite |
Grotto Batholith |
|
MOigd(s) |
Miocene-Oligocene |
granodiorite |
Snoqualmie Batholith |
|
MOit(g) |
Miocene-Oligocene |
tonalite |
Grotto Batholith |
|
MOix(s) |
Miocene-Oligocene |
intrusive breccia |
Snoqualmie Batholith |
|
Oc |
Oligocene |
continental sedimentary
deposits or rocks |
--- |
|
Oian(d) |
Oligocene |
intrusive andesite |
Mount Daniel, rocks of |
|
Oian(it) |
Oligocene |
intrusive andesite |
Index Batholith,
metaporphyry on Troublesome Mountain |
|
Oigd(i) |
Oligocene |
granodiorite |
Index Batholith |
|
Oigd(ig) |
Oligocene |
granodiorite |
Index Batholith, Goblin Peak
stock |
|
Oigd(is) |
Oligocene |
granodiorite |
Index Batholith, Sunday
Creek stock |
|
Ols(d) |
Oligocene |
mass-wasting deposits,
mostly landslides |
Mount Daniel, rocks of |
|
Ovd(d) |
Oligocene |
dacite flows |
Mount Daniel, rocks of |
|
Ovd(d) |
Oligocene |
dacite flows |
Mount Daniel, rocks of |
|
Ec(1f) |
Eocene |
continental sedimentary
deposits or rocks |
Swauk Formation,
unidentified subdivision of |
|
Ec(1g) |
Eocene |
continental sedimentary
deposits or rocks |
Swauk Formation,
unidentified subdivision of |
|
Ec(2b) |
Eocene |
continental sedimentary
deposits or rocks |
Barlow Pass Volcanics |
|
Ec(2t) |
Eocene |
continental sedimentary
deposits or rocks |
Tiger Mountain Formation,
Puget Group |
|
Eigd(f) |
Eocene |
granodiorite |
Fuller Mountain plug |
|
Em(2r) |
Eocene |
marine sedimentary rocks |
Raging River Formation |
|
Ev(b) |
Eocene |
volcanic rocks |
Barlow Pass Volcanics |
|
Ev(na) |
Eocene |
volcanic rocks |
Naches Formation |
|
Ev(p) |
Eocene |
volcanic rocks |
Mount Persis, volcanic rocks
of |
|
Eva(mp) |
Eocene |
andesite flows |
Mount Persis, volcanic rocks
of |
|
Eva(ss) |
Eocene |
andesite flows |
Silver Pass Member, Swauk
Formation |
|
Evc(t) |
Eocene |
volcaniclastic deposits or
rocks |
Tukwila Formation, Puget
Group |
|
Evr(na) |
Eocene |
rhyolite flows |
Naches Formation |
|
Evx(p) |
Eocene |
volcanic breccia |
Mount Persis, volcanic rocks
of |
|
pTigb |
pre-Tertiary |
gabbro |
--- |
|
pTigd(b) |
pre-Tertiary |
granodiorite |
Bald Mountain pluton |
|
Kbg(n) |
Cretaceous |
banded gneiss |
Nason Ridge Migmatitic
Gneiss |
|
Kigb(s) |
Cretaceous |
gabbro |
Mount Stuart batholith |
|
Kigd(sb) |
Cretaceous |
granodiorite |
Beckler Peak stocks, Mount
Stuart batholith |
|
Kit(se) |
Cretaceous |
tonalite |
Mount Stuart batholith,
eastern pluton |
|
Kit(sh) |
Cretaceous |
tonalite |
Mount Stuart batholith,
Harding Mountain, tonalite of |
|
Kit(sw) |
Cretaceous |
tonalite |
Mount Stuart batholith,
western pluton |
|
Kog(b) |
Cretaceous |
orthogneiss |
Black Peak batholith, main
phase |
|
Kog(p) |
Cretaceous |
orthogneiss |
Pear Lake, gneissic tonalite
of |
|
Kog(sc) |
Cretaceous |
orthogneiss |
Sloan Creek plutons |
|
Kog(t) |
Cretaceous |
orthogneiss |
Tenpeak pluton |
|
KJmc(w) |
Cretaceous-Jurassic |
metasedimentary rocks,
cherty |
western melange belt, rocks
of the |
|
KJmm(w) |
Cretaceous-Jurassic |
marine metasedimentary rocks |
western melange belt, rocks
of the |
|
KJmm(wa) |
Cretaceous-Jurassic |
marine metasedimentary rocks |
western melange belt,
argillite and graywacke of the |
|
KJmm(wk) |
Cretaceous-Jurassic |
marine metasedimentary rocks |
western melange belt,
K-feldspar sandstone of the |
|
KJmv(w) |
Cretaceous-Jurassic |
metavolcanic rocks |
western melange belt, rocks
of the |
|
Jgn(e) |
Jurassic |
gneiss |
eastern melange belt, rocks
of the |
|
Jhmc(i) |
Jurassic |
heterogeneous metamorphic
rocks, chert-bearing |
Ingalls tectonic complex |
|
Jib(e) |
Jurassic |
basic intrusive rocks |
eastern melange belt, rocks
of the |
|
Jib(w) |
Jurassic |
basic intrusive rocks |
western melange belt, rocks
of the |
|
Jigb(w) |
Jurassic |
gabbro |
western melange belt, rocks
of the |
|
Jit(e) |
Jurassic |
tonalite |
eastern melange belt, rocks
of the |
|
Jit(w) |
Jurassic |
tonalite |
western melange belt, rocks
of the |
|
Jmv(w) |
Jurassic |
metavolcanic rocks |
western melange belt, rocks
of the |
|
Jog(t) |
Jurassic |
orthogneiss |
Tonga Formation, gneissic
tonalite of Excelsior Mountain |
|
Jph(d) |
Jurassic |
phyllite, low grade |
Darrington Phyllite |
|
Jsh(s) |
Jurassic |
schist, low grade |
Shuksan Greenschist |
|
Ju |
Jurassic |
ultrabasic rocks |
--- |
|
Ju(e) |
Jurassic |
ultrabasic rocks |
eastern melange belt, rocks
of the |
|
Ju(i) |
Jurassic |
ultrabasic rocks |
Ingalls tectonic complex |
|
Ju(is) |
Jurassic |
ultrabasic rocks |
Ingalls tectonic complex,
serpentinite of |
|
Ju(w) |
Jurassic |
ultrabasic rocks |
western melange belt, rocks
of the |
|
JTRam(t) |
Jurassic-Triassic |
amphibolite |
Tonga Formation |
|
JTRhm(c) |
Jurassic-Triassic |
heterogeneous metamorphic
rocks |
Chiwaukum Schist, Nason
terrane |
|
JTRhm(t) |
Jurassic-Triassic |
heterogeneous metamorphic
rocks |
Tonga Formation |
|
JTRmc(e) |
Jurassic-Triassic |
metasedimentary rocks,
cherty |
eastern melange belt, rocks
of the |
|
JTRmt(e) |
Jurassic-Triassic |
metasedimentary and
metavolcanic rocks |
eastern melange belt, rocks
of the |
|
JTRsc(c) |
Jurassic-Triassic |
schist, high grade |
Chiwaukum Schist, Nason
terrane |
|
JTRu(c) |
Jurassic-Triassic |
ultrabasic rocks |
Chiwaukum Schist, Nason
terrane |
|
JTRu(t) |
Jurassic-Triassic |
ultrabasic rocks |
Tonga Formation |
|
TRmb(e) |
Triassic |
marble |
eastern melange belt, rocks
of the |
|
PMmb(w) |
Permian |
marble |
western melange belt, rocks
of the |
|
|
|
|
|