- The
Sevilleta Metarhyolite (or
Sevilleta Formation) is a
geologic formation in
central New Mexico. It has a
radiometric age of 1665 ± 16 Ma, corresponding...
-
parts of the Blue Ridge. The
Catoctin Formation contains metabasalt,
metarhyolite, and
porphyritic rocks,
columnar jointing, low-dipping
primary joints...
- most of the mountains'
steep western faces.
These include the
Sevilleta metarhyolite, with an age of 1665 ±16 Ma. The
southern part of the
Manzano Mountains...
-
include mixed series of gneiss, mica schist, barite, cipolem,
marble and
metarhyolite together with
calcite and
dolomite up to
three kilometers thick. Other...
- feet)
thick and has a uranium-lead
radiometric age of 1700 Mya. The
metarhyolite making up much of the
formation is
reddish orange in color, but ranges...
-
identical in age and
isotope composition to the
underlying Sevilleta metarhyolite,
suggesting that the
sediments of the
quartzite were
weathered almost...
-
Mountains and
nearby ranges of
central New Mexico.
These are
mostly metarhyolite or
quartzite units with some
schist and amphibolite, and form a sequence...
-
sheared and
metamorphosed fossil hydrothermal system in the
Vadito Group metarhyolite" (PDF). New
Mexico Geological Society Field Conference Series. 62: 359–378...
- with
round cobbles and
boulders of quartzite, sandstone, quartz, and
metarhyolite in red sand. Then it p****es
through a
region of
Brunswick Formation,...
-
Bernalillo County, New Mexico,
United States Topo map USGS
Sandia Park
Geology Rock age
Early Proterozoic Rock type
Metarhyolite Climbing Easiest route Hike...
