Update search
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
NARROW
Format
Article Type
Journal
Publisher
Section
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
East Africa
-
Tanzania (1)
-
-
Mozambique Belt (1)
-
Southern Africa
-
Kaapvaal Craton (1)
-
Karoo Basin (1)
-
South Africa
-
Bushveld Complex (8)
-
Merensky Reef (4)
-
Transvaal region (3)
-
-
-
-
Arctic region
-
Greenland
-
South Greenland (1)
-
-
-
Asia
-
Far East
-
China (1)
-
Korea
-
South Korea (1)
-
-
-
Indian Peninsula
-
India (1)
-
-
Yakutia Russian Federation
-
Udachnaya Pipe (1)
-
-
-
Atlantic Ocean
-
Mid-Atlantic Ridge (1)
-
-
Australasia
-
Australia
-
Tasmania Australia (2)
-
-
-
Canada
-
Muskox Intrusion (1)
-
Western Canada
-
Manitoba
-
Thompson nickel belt (1)
-
-
Northwest Territories (1)
-
-
-
Cascade Range (1)
-
Coast Ranges (1)
-
Commonwealth of Independent States
-
Russian Federation
-
Murmansk Russian Federation
-
Kola Peninsula (4)
-
Kola Russian Federation (1)
-
-
Yakutia Russian Federation
-
Udachnaya Pipe (1)
-
-
-
Urals (1)
-
-
Europe
-
Fennoscandian Shield (1)
-
Murmansk Russian Federation
-
Kola Peninsula (4)
-
Kola Russian Federation (1)
-
-
Southern Europe
-
Bulgaria
-
Bulgarian Rhodope Mountains (1)
-
-
Iberian Peninsula
-
Spain
-
Andalusia Spain
-
Malaga Spain (1)
-
-
-
-
Rhodope Mountains
-
Bulgarian Rhodope Mountains (1)
-
-
-
-
North America
-
Appalachians
-
Piedmont (1)
-
Southern Appalachians (1)
-
-
-
South America
-
Brazil
-
Bahia Brazil (3)
-
Sao Francisco Craton (2)
-
-
-
United States
-
Arizona (1)
-
California (1)
-
Georgia
-
DeKalb County Georgia (1)
-
-
North Carolina (1)
-
Oregon (1)
-
South Carolina (1)
-
Virginia (1)
-
Washington
-
Whatcom County Washington (1)
-
-
-
-
commodities
-
metal ores
-
base metals (2)
-
chromite ores (6)
-
cobalt ores (1)
-
copper ores (3)
-
nickel ores (6)
-
palladium ores (1)
-
platinum ores (7)
-
-
mineral deposits, genesis (11)
-
mineral exploration (3)
-
-
elements, isotopes
-
chemical ratios (1)
-
isotope ratios (3)
-
isotopes
-
radioactive isotopes
-
Pb-207/Pb-204 (1)
-
Re-187/Os-188 (1)
-
-
stable isotopes
-
O-18/O-16 (1)
-
Os-188/Os-187 (1)
-
Pb-207/Pb-204 (1)
-
Re-187/Os-188 (1)
-
-
-
metals
-
alkaline earth metals
-
magnesium (3)
-
strontium (1)
-
-
aluminum (1)
-
arsenic (1)
-
chromium (1)
-
cobalt (1)
-
copper (2)
-
hafnium (1)
-
iron (2)
-
lead
-
Pb-207/Pb-204 (1)
-
-
nickel (2)
-
platinum group
-
iridium (1)
-
osmium
-
Os-188/Os-187 (1)
-
Re-187/Os-188 (1)
-
-
palladium (3)
-
palladium ores (1)
-
platinum (1)
-
platinum ores (7)
-
-
precious metals (1)
-
rare earths
-
neodymium (1)
-
-
rhenium
-
Re-187/Os-188 (1)
-
-
thallium (1)
-
-
oxygen
-
O-18/O-16 (1)
-
-
selenium (2)
-
sulfur (1)
-
-
geochronology methods
-
Ar/Ar (1)
-
U/Pb (2)
-
-
geologic age
-
Cenozoic
-
Tertiary
-
Paleogene
-
Oligocene
-
upper Oligocene (1)
-
-
-
Twin Sisters Dunite (1)
-
-
-
Mesozoic
-
Cretaceous (1)
-
Jurassic (1)
-
Orocopia Schist (1)
-
Triassic (2)
-
-
Paleozoic
-
Cambrian (1)
-
-
Precambrian
-
Archean
-
Mesoarchean (1)
-
-
Onverwacht Group (1)
-
upper Precambrian
-
Proterozoic
-
Neoproterozoic (2)
-
Paleoproterozoic
-
Rustenburg Layered Suite (2)
-
-
-
-
-
-
igneous rocks
-
igneous rocks
-
feldspathoid rocks (1)
-
hypabyssal rocks (1)
-
kimberlite (1)
-
picrite (2)
-
plutonic rocks
-
anorthosite (3)
-
gabbros
-
norite (5)
-
troctolite (1)
-
-
granites (1)
-
lamprophyres (1)
-
pegmatite (1)
-
ultramafics
-
chromitite (7)
-
peridotites
-
dunite (12)
-
harzburgite (16)
-
lherzolite (1)
-
-
pyroxenite
-
clinopyroxenite (1)
-
orthopyroxenite
-
bronzitite (2)
-
-
websterite (2)
-
-
-
-
volcanic rocks
-
andesites
-
boninite (3)
-
-
basalts
-
alkali basalts (1)
-
tholeiite (1)
-
tholeiitic basalt (1)
-
-
dacites (1)
-
komatiite (2)
-
-
-
ophiolite (2)
-
-
metamorphic rocks
-
metamorphic rocks
-
amphibolites (2)
-
gneisses
-
granite gneiss (1)
-
-
impactites
-
impact breccia
-
lunar breccia (1)
-
-
-
metaigneous rocks
-
metapyroxenite (1)
-
serpentinite (2)
-
-
metasomatic rocks
-
serpentinite (2)
-
-
schists (1)
-
-
ophiolite (2)
-
-
meteorites
-
meteorites
-
Northwest Africa Meteorites (1)
-
stony meteorites
-
achondrites
-
eucrite (1)
-
Martian meteorites (1)
-
-
-
-
-
minerals
-
alloys
-
awaruite (1)
-
-
arsenides
-
maucherite (1)
-
-
minerals (1)
-
oxides
-
chrome spinel (5)
-
chromite (4)
-
corundum (1)
-
ilmenite (3)
-
magnetite (1)
-
spinel (1)
-
titanium oxides (1)
-
-
platinum minerals (2)
-
silicates
-
chain silicates
-
amphibole group
-
clinoamphibole
-
tremolite (1)
-
-
-
pyroxene group
-
clinopyroxene
-
diopside (1)
-
-
orthopyroxene
-
enstatite (1)
-
-
-
-
framework silicates
-
feldspar group
-
plagioclase (1)
-
-
-
orthosilicates
-
nesosilicates
-
garnet group
-
pyrope (1)
-
-
olivine group
-
olivine (8)
-
-
zircon group
-
zircon (2)
-
-
-
-
sheet silicates
-
mica group
-
phlogopite (1)
-
-
-
-
sulfides
-
bismuthinite (1)
-
bornite (1)
-
chalcopyrite (1)
-
copper sulfides (1)
-
heazlewoodite (1)
-
nickel sulfides (1)
-
pentlandite (3)
-
pyrite (2)
-
pyrrhotite (2)
-
-
-
Primary terms
-
absolute age (2)
-
Africa
-
East Africa
-
Tanzania (1)
-
-
Mozambique Belt (1)
-
Southern Africa
-
Kaapvaal Craton (1)
-
Karoo Basin (1)
-
South Africa
-
Bushveld Complex (8)
-
Merensky Reef (4)
-
Transvaal region (3)
-
-
-
-
Arctic region
-
Greenland
-
South Greenland (1)
-
-
-
Asia
-
Far East
-
China (1)
-
Korea
-
South Korea (1)
-
-
-
Indian Peninsula
-
India (1)
-
-
Yakutia Russian Federation
-
Udachnaya Pipe (1)
-
-
-
asteroids (1)
-
Atlantic Ocean
-
Mid-Atlantic Ridge (1)
-
-
Australasia
-
Australia
-
Tasmania Australia (2)
-
-
-
Canada
-
Muskox Intrusion (1)
-
Western Canada
-
Manitoba
-
Thompson nickel belt (1)
-
-
Northwest Territories (1)
-
-
-
Cenozoic
-
Tertiary
-
Paleogene
-
Oligocene
-
upper Oligocene (1)
-
-
-
Twin Sisters Dunite (1)
-
-
-
chemical analysis (2)
-
crust (2)
-
crystal chemistry (2)
-
crystal growth (2)
-
crystal structure (1)
-
deformation (2)
-
economic geology (5)
-
Europe
-
Fennoscandian Shield (1)
-
Murmansk Russian Federation
-
Kola Peninsula (4)
-
Kola Russian Federation (1)
-
-
Southern Europe
-
Bulgaria
-
Bulgarian Rhodope Mountains (1)
-
-
Iberian Peninsula
-
Spain
-
Andalusia Spain
-
Malaga Spain (1)
-
-
-
-
Rhodope Mountains
-
Bulgarian Rhodope Mountains (1)
-
-
-
-
fractures (1)
-
geochemistry (6)
-
geophysical methods (1)
-
igneous rocks
-
feldspathoid rocks (1)
-
hypabyssal rocks (1)
-
kimberlite (1)
-
picrite (2)
-
plutonic rocks
-
anorthosite (3)
-
gabbros
-
norite (5)
-
troctolite (1)
-
-
granites (1)
-
lamprophyres (1)
-
pegmatite (1)
-
ultramafics
-
chromitite (7)
-
peridotites
-
dunite (12)
-
harzburgite (16)
-
lherzolite (1)
-
-
pyroxenite
-
clinopyroxenite (1)
-
orthopyroxenite
-
bronzitite (2)
-
-
websterite (2)
-
-
-
-
volcanic rocks
-
andesites
-
boninite (3)
-
-
basalts
-
alkali basalts (1)
-
tholeiite (1)
-
tholeiitic basalt (1)
-
-
dacites (1)
-
komatiite (2)
-
-
-
inclusions (6)
-
intrusions (16)
-
isotopes
-
radioactive isotopes
-
Pb-207/Pb-204 (1)
-
Re-187/Os-188 (1)
-
-
stable isotopes
-
O-18/O-16 (1)
-
Os-188/Os-187 (1)
-
Pb-207/Pb-204 (1)
-
Re-187/Os-188 (1)
-
-
-
magmas (19)
-
mantle (4)
-
Mesozoic
-
Cretaceous (1)
-
Jurassic (1)
-
Orocopia Schist (1)
-
Triassic (2)
-
-
metal ores
-
base metals (2)
-
chromite ores (6)
-
cobalt ores (1)
-
copper ores (3)
-
nickel ores (6)
-
palladium ores (1)
-
platinum ores (7)
-
-
metals
-
alkaline earth metals
-
magnesium (3)
-
strontium (1)
-
-
aluminum (1)
-
arsenic (1)
-
chromium (1)
-
cobalt (1)
-
copper (2)
-
hafnium (1)
-
iron (2)
-
lead
-
Pb-207/Pb-204 (1)
-
-
nickel (2)
-
platinum group
-
iridium (1)
-
osmium
-
Os-188/Os-187 (1)
-
Re-187/Os-188 (1)
-
-
palladium (3)
-
palladium ores (1)
-
platinum (1)
-
platinum ores (7)
-
-
precious metals (1)
-
rare earths
-
neodymium (1)
-
-
rhenium
-
Re-187/Os-188 (1)
-
-
thallium (1)
-
-
metamorphic rocks
-
amphibolites (2)
-
gneisses
-
granite gneiss (1)
-
-
impactites
-
impact breccia
-
lunar breccia (1)
-
-
-
metaigneous rocks
-
metapyroxenite (1)
-
serpentinite (2)
-
-
metasomatic rocks
-
serpentinite (2)
-
-
schists (1)
-
-
metamorphism (2)
-
metasomatism (2)
-
meteorites
-
Northwest Africa Meteorites (1)
-
stony meteorites
-
achondrites
-
eucrite (1)
-
Martian meteorites (1)
-
-
-
-
mineral deposits, genesis (11)
-
mineral exploration (3)
-
mineralogy (1)
-
minerals (1)
-
Moon (1)
-
North America
-
Appalachians
-
Piedmont (1)
-
Southern Appalachians (1)
-
-
-
oxygen
-
O-18/O-16 (1)
-
-
Paleozoic
-
Cambrian (1)
-
-
paragenesis (1)
-
petrology (3)
-
plate tectonics (2)
-
Precambrian
-
Archean
-
Mesoarchean (1)
-
-
Onverwacht Group (1)
-
upper Precambrian
-
Proterozoic
-
Neoproterozoic (2)
-
Paleoproterozoic
-
Rustenburg Layered Suite (2)
-
-
-
-
-
reefs (2)
-
remote sensing (1)
-
selenium (2)
-
South America
-
Brazil
-
Bahia Brazil (3)
-
Sao Francisco Craton (2)
-
-
-
sulfur (1)
-
tectonics (1)
-
United States
-
Arizona (1)
-
California (1)
-
Georgia
-
DeKalb County Georgia (1)
-
-
North Carolina (1)
-
Oregon (1)
-
South Carolina (1)
-
Virginia (1)
-
Washington
-
Whatcom County Washington (1)
-
-
-
-
rock formations
-
Beaufort Group (1)
-
-
sedimentary structures
-
boudinage (1)
-
GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
orthopyroxenite
Petrogenesis of Discordant Ultramafic Bodies in the Lower Critical Zone at the Winterveld Chromite Mine, Eastern Bushveld Complex, South Africa: Late-Magmatic Intrusions and Dismembering of the LG6 Chromitite
Mineral–Geochemical and Geotectonic Features of the Lotmvara-II Ultrabasic Sill, Serpentinite Belt (Kola Peninsula)
Komatiitic Subvolcanic Rocks in the Mount Khanlauta Massif, Serpentinite Belt (Kola Peninsula)
Palladothallite, Pd 3 Tl, a new mineral from the Monchetundra layered intrusion, Kola Peninsula, Russia
The chromian spinels of the Lyavaraka ultrabasic complex, Serpentinite Belt, Kola Peninsula, Russia: Patterns of zoning, hypermagnesian compositions, and early oxidation
Transgressive nature and chilled margins of the Upper Zone in the western Bushveld Complex, South Africa
The Mesoarchean Amikoq Layered Complex of SW Greenland: Part 2. Geochemical evidence for high-Mg noritic plutonism through crustal assimilation
Challenging Issues of the Earth’s History and the Central Asian and Circum-Pacific Tectonics, Geodynamics, and Metallogeny (on the 85th Birthday of Academician Nikolai L. Dobretsov)
A new occurrence of corundum in eucrite and its significance
Nickel-Copper Sulfide Mineralization in the Ntaka Hill Ultramafic Complex, Nachingwea Region, Tanzania
Geochemistry and Isotopic Age of Zircons from Rocks of Ultramafic Massifs in the Southern Folded Framing of the São Francisco Craton (Southeastern Brazil)
A new occurrence of yimengite-hawthorneite and crichtonite-group minerals in an orthopyroxenite from kimberlite: Implications for mantle metasomatism
ABSTRACT Blocks of variably serpentinized oceanic mantle peridotite (harzburgite, olivine orthopyroxenite, and dunite) are entrained within a latest Cretaceous (“Laramide”) low-angle subduction channel, the Orocopia Schist, exposed at Cemetery Ridge, southwest Arizona. Oceanic peridotite, serpentinized by seawater, is strikingly out of place in this region of Paleoproterozoic to Jurassic continental crust. Correspondingly, the Cemetery Ridge peridotite contains four serpentinization-related sulfide or intermetallic minerals quite unusual for an inland, continental tectonic setting: pentlandite, cobalt pentlandite, heazlewoodite, and awaruite. The peridotite also contains two Ni-arsenide minerals, orcélite and maucherite; and, less commonly, the sulfides pyrrhotite, bismuthinite, bornite, and parkerite(?). These minerals form tiny to small (~3–100 μm) grains sparsely scattered amongst the profusion of serpentine and magnetite produced by serpentinization of olivine; many grains are enclosed in magnetite. The three principal sulfide minerals at Cemetery Ridge are pentlandite [(Ni,Fe) 8.93 S 8 ] in all samples studied, and cobalt pentlandite [(Co,Ni,Fe) 9.01 S 8 ] and heazlewoodite (Ni 2.98 S 2 ) in many or most. Pentlandite and cobalt pentlandite form a discontinuous series to 74 molar percent of the Co end member. High-Co pentlandite has systematically elevated Ni/Fe. Pyrrhotite (Fe 7.88 S 8 ) occurs only in one high-S sample. Although orcélite (Ni 4.71 As 2 ) and maucherite (Ni 11.06 As 8 ) are volumetrically rare, one or both are found in most samples. Awaruite (Ni 5 Fe) is extremely rare, a few minute blebs in two samples. Sulfide assemblages at Cemetery Ridge indicate the highly reduced pore fluid typical of serpentinization. Sulfur was introduced into Cemetery Ridge peridotite during the early stages of serpentinization, as one aspect of a general enrichment in fluid-mobile elements in a suprasubduction (mantle-wedge) environment. Further serpentinization was accompanied by progressive desulfurization, with concomitant transformation from minerals of higher to lower sulfidation, and partial transfer of first Fe then Ni from sulfide to oxide phases. Five Ni or Ni-Co sulfide or arsenide minerals at Cemetery Ridge are new and unexpected for Arizona, where serpentinite is quite rare and Ni or Co deposits unknown. Sulfide minerals and assemblages at Cemetery Ridge are comparable to those of serpentinites in such places as the California and Oregon Coast Ranges and Mid-Atlantic Ridge, emphasizing the uniqueness of the tectonic setting of the subducted oceanic peridotite at Cemetery Ridge, and enhancing the status of the Orocopia and related schists as the world’s type (first-recognized, best-known) low-angle paleosubduction complex.