- such as
garnet gneiss,
biotite gneiss,
albite gneiss, and so forth.
Orthogneiss designates a
gneiss derived from an
igneous rock, and
paragneiss is one...
- The Tres
Piedras Orthogneiss is a
pluton in
northern New Mexico. It has a U-Pb
radiometric age of 1693 Mya,
placing it in the
Statherian period. Though...
-
Gneiss consists of a
mixture of
orthogneiss and biotite-rich paragneiss. On the
south and
southeast face of K2, the
orthogneiss consists of a
mixture of a...
-
Banded gneiss with a **** of
granite orthogneiss...
-
chalet being built in Haute-Maurienne (Savoy), the use of
thick pieces of
orthogneiss (4–7 cm) is by the
strict architectural regulations in the
region bordering...
- foreland, an old
sedimentary basin that
hosts hydrocarbon reserves.
Orthogneiss dated at 525
million years is
known to
underlie some of the oil wells...
- 14°27′E / 49.750°N 14.450°E / 49.750; 14.450
Parent range Central Bohemian Hills Geology Type of rock Granite, granodiorite, diorite,
orthogneiss...
-
under cross-polarized light.
Biotite (in brown) and
muscovite in an
orthogneiss thin
section under plane-polarized light.
Biotite in thin
section under...
-
protolith (para-, such as paraschist) or
igneous protolith (ortho-, such as
orthogneiss). When
nothing is
known about the protolith, the
textural name is used...
- been
exposed in a
glacial peneplain.
Analyses of
zircons from a
felsic orthogneiss with
presumed granitic protolith returned an age of 4.031 ±0.003 Ga....
