PAROLE IN INGLESE ASSOCIATE CON «HORNFELS»
hornfels
thin
section
composition
facies
protolith
what
made
rock
facts
parent
used
hornfels
called
because
exceptional
toughness
texture
both
reminiscent
animal
horns
these
properties
fine
grained
aligned
crystals
with
geology
minerals
formed
between
mudstone
shale
other
clay
rich
body
represents
altered
subjected
heating
during
metamorphism
close
bodies
hornfeld
sometimes
created
lang
wood
part
produced
under
certain
natural
forces
word
comes
from
german
meaning
encyclopedia
britannica
major
division
form
inner
parts
zone
around
intrusions
defined
noun
usually
shallow
depths
types
about
where
magma
bakes
recrystallizes
surrounding
note
breaks
information
pictures
articles
10 LIBRI IN INGLESE ASSOCIATI CON «HORNFELS»
Scopri l'uso di
hornfels nella seguente selezione bibliografica. Libri associati con
hornfels e piccoli estratti per contestualizzare il loro uso nella letteratura.
1
Journal of the Royal Society of New Zealand
The initial metamorphism appears as a zone of coarsely crystalline hornfels
adjacent to the tonalite contact. Close to the contact, biotite forms large (1 mm)
sieve-textured porphyroblasts but in the outer hornfels it occurs as small (0.2 mm)
...
2
U.S. Geological Survey professional paper
The color difference between the pelitic hornfels and calc- hornfels beds is
caused by the presence of much fine carbonaceous material in the pelitic
hornfels. Light-colored calc-hornfels layers generally have wavy contacts with the
contiguous ...
Geological Survey (U.S.), 1965
3
Geological Survey Professional Paper
Contact metamorphism in the Merrick Mountains corresponds to Turner's (1968)
hornblende-hornfels facies. PLUTONIC ROCKS The northern and northeastern
two-thirds of the Merrick Mountains are underlain by a composite, concen- ...
Geological Survey (U.S.), 1988
4
Geological Survey Bulletin
450 m wide. The width of this aureole suggests that the batholith- Kalabak
contact dips at a shallow angle to the east; Typically, the batholith
metamorphoses the phyllite of the sequence of Kalabak to a hornblende-quartz-
orthoclase hornfels of ...
5
New Zealand Journal of Geology and Geophysics
170; acidic 171; basic 172; olivine nodules 173; xenolith 174; kimberlite 175;
cromaltite 176; ophicalcite 177 (a) Pelitic hornfels 201-209 pelitic hornfels (undiff.
) 201; spotted slate 202; spotted schist 203; cordierite 204; andalusite 205; ...
or less. Ocean spreading centers represent regionally extensive zones of
hydrothermal metamorphism that produce hornfels facies rocks on a large scale,
effectively altering entire ocean basins. The four types of hornfels facies are
named for ...
Kevin Hefferan, John O'Brien, 2010
7
Rock-Forming Minerals: Orthosilicates, Volume 1A:
quartz- muscovite hornfels to sillimanite-cordierite-perthite-biotite- quartz -
almandine hornfels occurs in a metamorphic septum near the southern end of the
Sierra Nevada, east of Isabella, California (Best and Weiss, 1964); an analysis of
the ...
William Alexander Deer, Robert Andrew Howie, J. Zussman, 1982
8
Radioactivity and Uranium Content, Sharon Springs Member of ...
The only hornfels in the Mescal noted by the writers is just above the diabase
contact about a mile southwest of the Red Bluff mine. Shride (oral communication
, 1954) has noted similar hornfels in both formations at several other localities.
Edwin Robert Landis, 1959
9
Geology of Coal Fires: Case Studies from Around the World
Some of these rocks look homogeneous to the naked eye; however, they show a
fine clastic structure at higher magnification. In several cases, outcrops of
hornfels occur in the uppermost part of the olive unit. These are dark, dense,
massive, ...
10
The Evolution of the Rheic Ocean: From Avalonian-Cadomian ...
Sample Rock type Sample location Coordinates 753 Cordierite hornfels
Spitzberg, Schwosdorf r5431130 h5682450 754 Granodiorite Spitzberg,
Schwosdorf r5431160 h5682400 755 Graywacke Bischheim-Häslich r5432230
h5679700 756 ...
10 NOTIZIE DOVE SI INCLUDE IL TERMINE «HORNFELS»
Vedi di che si parla nei media nazionali e internazionali e come viene utilizzato il termine ino
hornfels nel contesto delle seguenti notizie.
Avrupa Drills 57.35 Meters of 2.09 g/t Gold at Slivovo
Proximal to the dikes, alteration is characterized by hornfels and skarnoid formation, associated with elevated copper values. Distal to the dikes, alteration is ... «Junior Mining Network, giu 15»
Silver Spruce Signs Letter of Agreement to Purchase Epithermal …
Above the altered volcanics, calcareous limestone, sandstones and hornfels formations have been hydrothermally altered and mineralized. «MarketWatch, giu 15»
Northair Releases Results of Airborne Geophysical Program on La …
The Company believes this linear magnetic low represents alteration superimposed on hornfels sediments along a north to northwest trending ... «Azomining, giu 15»
Northair Silver Airborne Geophysical Survey Identifies New Drill …
The Company believes this linear magnetic low represents alteration superimposed on hornfels sediments along a north to northwest trending ... «MarketWatch, giu 15»
Guerrero Identifies Additional Target Areas With 2014 Airborne …
The survey has resulted in one Priority 1 target located southwest of the Punto Rojo - Hornfels Hill magnetic linear, three Priority 2 areas ... «Canadian Mining Journal, mag 15»
Eurasian Minerals Reports Initial Resource Estimate and Project …
For example, at Valley, this style of alteration and mineralization is developed to the southeast in shallow hornfels host rocks that occur from ... «Canadian Mining Journal, mag 15»
Coral Receives Notice from Barrick Gold on Gold Ridge Exploration …
Most of the higher gold values (≥0.34 ppm) occur in retrograde-altered calc-silicate hornfels suggesting both a spatial and genetic relation to ... «Canadian Mining Journal, mag 15»
Bet on junior gold mining stocks
Importantly, the gold intercept was hosted entirely in oxidized hornfels breccia, representing the most significant oxidized gold mineralization ... «Mineweb, apr 15»
Now is the Time to Buy Resource Stocks, Especially Gold Equities
Importantly, the gold intercept was hosted entirely in oxidized hornfels breccia, representing the most significant oxidized gold mineralization ... «The Market Oracle, apr 15»
Southern Silver Exploration – Acquisition, Exploration and …
... often tens of metres thick, of silicification, pyritic sulphides, and variable skarn alteration and hornfels in five of the nine core holes which tested the property. «Silver Investing News, feb 15»
