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
-
Madagascar (1)
-
Southern Africa
-
South Africa
-
Witwatersrand (1)
-
-
-
-
Asia
-
Far East
-
China
-
Hebei China (1)
-
-
-
Indian Peninsula
-
India
-
Dharwar Craton (1)
-
-
-
Siberia (1)
-
-
Australasia
-
Australia
-
Arunta Block (1)
-
Northern Territory Australia
-
Reynolds Range (1)
-
-
South Australia
-
Olympic Dam Deposit (2)
-
Roxby Downs Australia (1)
-
-
Tasmania Australia (1)
-
Victoria Australia
-
Bendigo Australia (1)
-
-
-
-
Canada
-
Western Canada
-
British Columbia (1)
-
-
-
Europe
-
Western Europe
-
Scandinavia
-
Norway (1)
-
Western Gneiss region (1)
-
-
-
-
Indian Ocean Islands
-
Madagascar (1)
-
-
McArthur Basin (1)
-
United States
-
Alaska (1)
-
Nevada
-
Carlin Trend (1)
-
-
-
-
commodities
-
metal ores
-
copper ores (4)
-
gold ores (5)
-
IOCG deposits (2)
-
molybdenum ores (3)
-
silver ores (1)
-
uranium ores (1)
-
-
mineral deposits, genesis (6)
-
mineral exploration (1)
-
-
elements, isotopes
-
halogens
-
bromine (1)
-
chlorine (1)
-
-
isotope ratios (2)
-
isotopes
-
radioactive isotopes
-
Pb-206/Pb-204 (1)
-
Pb-207/Pb-204 (1)
-
-
stable isotopes
-
Cu-65 (1)
-
Fe-57 (1)
-
Ni-60 (1)
-
Pb-206/Pb-204 (1)
-
Pb-207/Pb-204 (1)
-
Pb-207/Pb-206 (1)
-
S-34/S-32 (1)
-
Sr-87/Sr-86 (1)
-
-
-
Lu/Hf (3)
-
metals
-
alkaline earth metals
-
strontium
-
Sr-87/Sr-86 (1)
-
-
-
arsenic (2)
-
cobalt (2)
-
copper
-
Cu-65 (1)
-
-
gold (2)
-
iron
-
Fe-57 (1)
-
-
lead
-
Pb-206/Pb-204 (1)
-
Pb-207/Pb-204 (1)
-
Pb-207/Pb-206 (1)
-
-
nickel
-
Ni-60 (1)
-
-
precious metals (1)
-
rare earths (1)
-
silver (1)
-
-
selenium (1)
-
sulfur
-
S-34/S-32 (1)
-
-
trace metals (1)
-
-
geochronology methods
-
Lu/Hf (3)
-
Rb/Sr (3)
-
Re/Os (1)
-
thermochronology (1)
-
U/Pb (4)
-
-
geologic age
-
Paleozoic
-
lower Paleozoic (3)
-
-
Precambrian
-
upper Precambrian
-
Proterozoic
-
Mesoproterozoic
-
Roper Group (1)
-
-
Neoproterozoic (2)
-
-
-
Witwatersrand Supergroup (1)
-
-
-
igneous rocks
-
igneous rocks
-
plutonic rocks
-
diorites (1)
-
granites (1)
-
granodiorites (1)
-
-
-
-
metamorphic rocks
-
metamorphic rocks
-
gneisses (1)
-
metasedimentary rocks
-
metapelite (1)
-
-
-
-
minerals
-
arsenides
-
cobaltite (1)
-
-
carbonates
-
bastnaesite (1)
-
synchysite (1)
-
-
halides
-
fluorides
-
bastnaesite (1)
-
synchysite (1)
-
-
-
phosphates
-
apatite (2)
-
florencite (1)
-
monazite (2)
-
xenotime (1)
-
-
silicates
-
chain silicates
-
amphibole group (1)
-
-
orthosilicates
-
nesosilicates
-
garnet group (2)
-
zircon group
-
zircon (1)
-
-
-
sorosilicates
-
epidote group
-
epidote (1)
-
-
-
-
sheet silicates
-
chlorite group
-
chlorite (1)
-
-
illite (1)
-
mica group
-
biotite (1)
-
muscovite (2)
-
-
-
-
sulfides
-
bornite (1)
-
chalcopyrite (1)
-
cobaltite (1)
-
molybdenite (1)
-
pyrite (3)
-
sphalerite (1)
-
-
tellurides (1)
-
-
Primary terms
-
absolute age (6)
-
Africa
-
Madagascar (1)
-
Southern Africa
-
South Africa
-
Witwatersrand (1)
-
-
-
-
Asia
-
Far East
-
China
-
Hebei China (1)
-
-
-
Indian Peninsula
-
India
-
Dharwar Craton (1)
-
-
-
Siberia (1)
-
-
Australasia
-
Australia
-
Arunta Block (1)
-
Northern Territory Australia
-
Reynolds Range (1)
-
-
South Australia
-
Olympic Dam Deposit (2)
-
Roxby Downs Australia (1)
-
-
Tasmania Australia (1)
-
Victoria Australia
-
Bendigo Australia (1)
-
-
-
-
Canada
-
Western Canada
-
British Columbia (1)
-
-
-
crust (2)
-
crystal chemistry (1)
-
crystal growth (1)
-
crystallography (1)
-
deformation (1)
-
diagenesis (1)
-
Europe
-
Western Europe
-
Scandinavia
-
Norway (1)
-
Western Gneiss region (1)
-
-
-
-
geochemistry (1)
-
igneous rocks
-
plutonic rocks
-
diorites (1)
-
granites (1)
-
granodiorites (1)
-
-
-
inclusions (2)
-
Indian Ocean Islands
-
Madagascar (1)
-
-
intrusions (2)
-
isotopes
-
radioactive isotopes
-
Pb-206/Pb-204 (1)
-
Pb-207/Pb-204 (1)
-
-
stable isotopes
-
Cu-65 (1)
-
Fe-57 (1)
-
Ni-60 (1)
-
Pb-206/Pb-204 (1)
-
Pb-207/Pb-204 (1)
-
Pb-207/Pb-206 (1)
-
S-34/S-32 (1)
-
Sr-87/Sr-86 (1)
-
-
-
metal ores
-
copper ores (4)
-
gold ores (5)
-
IOCG deposits (2)
-
molybdenum ores (3)
-
silver ores (1)
-
uranium ores (1)
-
-
metals
-
alkaline earth metals
-
strontium
-
Sr-87/Sr-86 (1)
-
-
-
arsenic (2)
-
cobalt (2)
-
copper
-
Cu-65 (1)
-
-
gold (2)
-
iron
-
Fe-57 (1)
-
-
lead
-
Pb-206/Pb-204 (1)
-
Pb-207/Pb-204 (1)
-
Pb-207/Pb-206 (1)
-
-
nickel
-
Ni-60 (1)
-
-
precious metals (1)
-
rare earths (1)
-
silver (1)
-
-
metamorphic rocks
-
gneisses (1)
-
metasedimentary rocks
-
metapelite (1)
-
-
-
metamorphism (2)
-
metasomatism (4)
-
mineral deposits, genesis (6)
-
mineral exploration (1)
-
orogeny (1)
-
Paleozoic
-
lower Paleozoic (3)
-
-
Precambrian
-
upper Precambrian
-
Proterozoic
-
Mesoproterozoic
-
Roper Group (1)
-
-
Neoproterozoic (2)
-
-
-
Witwatersrand Supergroup (1)
-
-
sedimentary rocks
-
clastic rocks
-
conglomerate (1)
-
shale (1)
-
-
-
selenium (1)
-
spectroscopy (1)
-
sulfur
-
S-34/S-32 (1)
-
-
tectonics (1)
-
United States
-
Alaska (1)
-
Nevada
-
Carlin Trend (1)
-
-
-
X-ray analysis (1)
-
-
sedimentary rocks
-
sedimentary rocks
-
clastic rocks
-
conglomerate (1)
-
shale (1)
-
-
-
GeoRef Categories
Era and Period
Book Series
Date
Availability
Arsenohauchecornite, ognitite, parkerite, and related minerals from Onça-Rosa orebody, Carajás, Brazil: fingerprinting PGE signatures in hydrothermal Ni ores Free
Eoarchean apatite uncovers felsic foundations of the Pilbara Craton Open Access
Porphyry Cu-Mo mineralization at Anabama Hill, Delamerian Orogen, South Australia: Fertility assessment implied from epidote and chlorite chemistry Available to Purchase
EBSD mapping of Cu-Fe-sulfides reveal microstructures enriched in critical/precious metals and resolve deformation histories Available to Purchase
Robust laser ablation Lu–Hf dating of apatite: an empirical evaluation Open Access
Abstract Recent developments in laser-ablation Lu–Hf dating have opened a new opportunity to rapidly obtain apatite ages that are potentially more robust to isotopic resetting compared to traditional U–Pb dating. However, the robustness of the apatite Lu–Hf system has not been systematically examined. To address this knowledge gap, we conducted four case studies to determine the resistivity of the apatite Lu–Hf system compared to the zircon and apatite U–Pb system. In all cases, the apatite U–Pb system records a secondary (metamorphic or metasomatic) overprint. The apatite Lu–Hf system, however, preserves primary crystallization ages in unfoliated granitoids at temperatures of at least c. 660°C. Above c. 730°C, the Lu–Hf system records isotopic resetting by volume diffusion. Hence, in our observations for apatites of ‘typical’ grain sizes in granitoids (c. 0.01–0.03 mm 2), the closure temperature of the Lu–Hf system is between c. 660 and c. 730°C, consistent with theoretical calculations. In foliated granites, the Lu–Hf system records the timing of recrystallization, while the apatite U–Pb system tends to record younger cooling ages. We also present apatite Lu–Hf dates for lower crustal xenoliths erupted with young alkali basalts, demonstrating that the Lu–Hf system can retain a memory of primary ages when exposed to magmatic temperatures for a relatively short duration. Hence, the apatite Lu–Hf system is a new insightful addition to traditional zircon (or monazite) U–Pb dating, particularly when zircons/monazites are absent or difficult to interpret due to inheritance or when U and Pb isotopes display open system behaviour. The laser-ablation-based Lu–Hf method allows campaign-style studies to be conducted at a similar rate to U–Pb studies, opening new opportunities for magmatic and metamorphic studies.
Metallogenic Setting and Temporal Evolution of Porphyry Cu-Mo Mineralization and Alteration in the Delamerian Orogen, South Australia: Insights From Zircon U-Pb, Molybdenite Re-Os, and In Situ White Mica Rb-Sr Geochronology Available to Purchase
Laser-ablation Lu-Hf dating reveals Laurentian garnet in subducted rocks from southern Australia Available to Purchase
Unraveling the histories of Proterozoic shales through in situ Rb-Sr dating and trace element laser ablation analysis Open Access
In situ laser ablation Lu–Hf geochronology of garnet across the Western Gneiss Region: campaign-style dating of metamorphism Available to Purchase
Halogens in hydrothermal sphalerite record origin of ore-forming fluids Available to Purchase
Structural evolution and medium-temperature thermochronology of central Madagascar: implications for Gondwana amalgamation Available to Purchase
Rare Earth Element Phosphate Minerals from the Olympic Dam Cu-U-Au-Ag Deposit, South Australia: Recognizing Temporal-Spatial Controls On Ree Mineralogy in an Evolved IOCG System Available to Purchase
New Advances in Detecting the Distal Geochemical Footprints of Porphyry Systems—Epidote Mineral Chemistry as a Tool for Vectoring and Fertility Assessments Available to Purchase
Abstract Propylitic alteration halos to porphyry deposits are characterized by low- to moderate-intensity replacements of primary feldspars and mafic minerals by epidote, chlorite, calcite ± actinolite, pyrite, prehnite, and zeolites. The pyrite halo that surrounds porphyry deposits typically extends part way through the propylitic halo and provides strong responses to conventional geochemical and geophysical exploration techniques. When exploring outside of the pyrite halo, porphyry deposits have proven to be difficult to detect based simply on the presence of weak epidote-chlorite alteration. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) analyses of epidote from propylitic alteration zones around porphyry and skarn deposits in the central Baguio district, Philippines, have shown that low-level hypogene geochemical dispersion halos can be detected at considerably greater distances than can be achieved by conventional rock chip sampling of altered rocks. Epidote chemistry can provide vectoring information to the deposit center and potentially provides insights into the potential metal endowment of the porphyry system, providing explorers with both vectoring and fertility assessment tools. Epidote chemistry varies with respect to distance from porphyry deposit centers, with the highest concentrations of proximal pathfinder elements (e.g., Cu, Mo, Au, Sn) detected in epidote from close to the potassic alteration zone. Distal pathfinder elements (e.g., As, Sb, Pb, Zn, Mn) are most enriched in epidote more than 1.5 km from the deposit center. Rare earth elements and Zr are most enriched in epidote from the edge of the pyrite halo. The lateral zonation in epidote chemistry implies that at Baguio the geochemical dispersion patterns were produced by lateral outflow of spent fluids from the porphyry center, rather than from ingress of peripheral, nonmagmatic waters.