- 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
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
Central Africa
-
Angola (1)
-
Congo Democratic Republic
-
Kinshasa Congo Democratic Republic (1)
-
-
-
Southern Africa
-
Karoo Basin (4)
-
Namibia (7)
-
South Africa
-
Cape Province region (1)
-
-
Zimbabwe
-
Great Dyke (1)
-
-
-
-
Antarctica
-
Victoria Land (1)
-
-
Asia
-
Indian Peninsula
-
India (1)
-
-
-
Atlantic Ocean
-
South Atlantic
-
Rio Grande Rise (1)
-
Santos Basin (2)
-
Walvis Ridge (1)
-
-
-
Atlantic Ocean Islands
-
Tristan da Cunha (1)
-
-
Atlantic region (5)
-
Austral Basin (1)
-
Australasia
-
Australia (2)
-
-
Columbia River (1)
-
Columbia River basin (1)
-
Commonwealth of Independent States
-
Russian Federation (1)
-
-
Europe
-
Western Europe
-
United Kingdom
-
Great Britain
-
Scotland
-
Hebrides (1)
-
-
-
-
-
-
North America
-
Basin and Range Province (1)
-
Rio Grande Rift (1)
-
-
Pacific Ocean
-
North Pacific
-
Northwest Pacific (1)
-
-
West Pacific
-
Northwest Pacific (1)
-
-
-
Rio Grande (1)
-
Salado Basin (1)
-
South America
-
Amazon Basin (4)
-
Andes (1)
-
Argentina
-
Paganzo Basin (1)
-
Santa Cruz Argentina
-
Deseado Massif (1)
-
-
-
Bolivia (1)
-
Brazil
-
Amazonas Basin (2)
-
Goias Brazil (3)
-
Maranhao Basin (1)
-
Mato Grosso Brazil (4)
-
Mato Grosso do Sul Brazil (2)
-
Minas Gerais Brazil (2)
-
Parana Brazil (8)
-
Parnaiba Basin (3)
-
Pelotas Basin (1)
-
Rio Grande do Sul Brazil
-
Encruzilhada do Sul Brazil (2)
-
-
Santa Catarina Brazil (4)
-
Sao Francisco Craton (2)
-
Sao Paulo Brazil (11)
-
Serra do Espinhaco (1)
-
Serra do Mar (1)
-
Solimoes Basin (1)
-
-
Chile (1)
-
Colombia (1)
-
Paraguay (9)
-
Parana Basin (99)
-
Patagonia (1)
-
Uruguay (5)
-
-
United States
-
Arizona (1)
-
Colorado Plateau (1)
-
Columbia Plateau (1)
-
Nevada (1)
-
Texas
-
Val Verde Basin (1)
-
West Texas (1)
-
-
Western U.S. (1)
-
Wyoming (1)
-
Yellowstone National Park (1)
-
-
-
commodities
-
ceramic materials (1)
-
clay deposits (1)
-
diamond deposits (1)
-
energy sources (1)
-
gems (2)
-
mineral deposits, genesis (1)
-
mineral exploration (2)
-
petroleum
-
natural gas (2)
-
-
water resources (1)
-
-
elements, isotopes
-
carbon
-
C-13/C-12 (2)
-
-
isotope ratios (2)
-
isotopes
-
radioactive isotopes
-
Pb-206/Pb-204 (2)
-
Pb-207/Pb-204 (1)
-
Pb-208/Pb-204 (1)
-
-
stable isotopes
-
C-13/C-12 (2)
-
O-18/O-16 (2)
-
Pb-206/Pb-204 (2)
-
Pb-207/Pb-204 (1)
-
Pb-208/Pb-204 (1)
-
-
-
metals
-
alkaline earth metals
-
magnesium (1)
-
-
aluminum (1)
-
iron (1)
-
lead
-
Pb-206/Pb-204 (2)
-
Pb-207/Pb-204 (1)
-
Pb-208/Pb-204 (1)
-
-
-
oxygen
-
O-18/O-16 (2)
-
-
-
fossils
-
borings (1)
-
burrows (1)
-
Chordata
-
Vertebrata
-
Pisces
-
Osteichthyes
-
Sarcopterygii
-
Dipnoi (1)
-
-
-
-
Tetrapoda
-
Mammalia (1)
-
-
-
-
coprolites (1)
-
Graptolithina
-
Graptoloidea (1)
-
-
ichnofossils (4)
-
Invertebrata
-
Arthropoda
-
Mandibulata
-
Crustacea
-
Ostracoda (2)
-
-
Insecta
-
Pterygota
-
Neoptera
-
Exopterygota
-
Hemiptera (1)
-
-
-
-
-
-
Trilobitomorpha
-
Trilobita (2)
-
-
-
Brachiopoda
-
Articulata
-
Terebratulida (1)
-
-
-
Mollusca
-
Bivalvia (1)
-
Cephalopoda (1)
-
-
-
microfossils
-
Chitinozoa (4)
-
Conodonta (1)
-
-
palynomorphs
-
acritarchs (5)
-
Chitinozoa (4)
-
miospores
-
pollen (1)
-
-
-
Plantae
-
Bryophyta (1)
-
Spermatophyta
-
Gymnospermae
-
Cordaitales (1)
-
-
-
-
tracks (2)
-
-
geochronology methods
-
(U-Th)/He (1)
-
Ar/Ar (4)
-
K/Ar (1)
-
Nd/Nd (1)
-
paleomagnetism (5)
-
Rb/Sr (1)
-
Sm/Nd (1)
-
Sr/Sr (1)
-
thermochronology (1)
-
U/Pb (7)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Holocene (2)
-
-
Tertiary
-
Neogene
-
Miocene
-
Columbia River Basalt Group (3)
-
-
-
Paleogene
-
Paleocene (1)
-
-
-
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Aptian (2)
-
Barremian (1)
-
Berriasian (1)
-
Hauterivian (1)
-
Valanginian (1)
-
-
Upper Cretaceous
-
Bauru Group (1)
-
-
-
Jurassic
-
Clarens Formation (1)
-
Ferrar Group (1)
-
Upper Jurassic (2)
-
-
Serra Geral Formation (6)
-
Triassic
-
Lower Triassic
-
Permian-Triassic boundary (1)
-
-
Middle Triassic (1)
-
-
-
Paleozoic
-
Carboniferous
-
Pennsylvanian
-
Middle Pennsylvanian
-
Moscovian (1)
-
-
Upper Pennsylvanian
-
Kasimovian (1)
-
-
-
Upper Carboniferous (4)
-
-
Devonian
-
Lower Devonian
-
Furnas Formation (1)
-
-
Middle Devonian
-
Eifelian (1)
-
-
Ponta Grossa Formation (4)
-
Upper Devonian (1)
-
-
Itarare Subgroup (13)
-
Ordovician
-
Acoite Formation (1)
-
Upper Ordovician
-
Hirnantian (2)
-
-
-
Permian
-
Guadalupian
-
Roadian (1)
-
-
Irati Formation (7)
-
Lower Permian
-
Cisuralian
-
Artinskian (1)
-
Asselian (1)
-
Sakmarian (2)
-
-
-
Passa Dois Group (3)
-
Rio Bonito Formation (8)
-
Upper Permian
-
Permian-Triassic boundary (1)
-
Rio do Rasto Formation (2)
-
-
-
Silurian
-
Lower Silurian
-
Llandovery (5)
-
-
-
upper Paleozoic
-
Dwyka Formation (1)
-
Tubarao Group (1)
-
-
-
Phanerozoic (2)
-
Precambrian
-
upper Precambrian
-
Proterozoic
-
Damara System (1)
-
Neoproterozoic
-
Ediacaran (1)
-
-
-
-
Waterberg System (1)
-
-
-
igneous rocks
-
igneous rocks
-
carbonatites (2)
-
kimberlite (1)
-
plutonic rocks
-
diabase (3)
-
granites (1)
-
lamproite (1)
-
lamprophyres (1)
-
pegmatite (1)
-
-
volcanic rocks
-
andesites (1)
-
basalts
-
flood basalts (10)
-
tholeiite (1)
-
-
phonolites (1)
-
rhyodacites (2)
-
rhyolites (1)
-
-
-
-
metamorphic rocks
-
metamorphic rocks
-
impactites
-
impact breccia (1)
-
-
-
-
minerals
-
carbonates
-
dolomite (1)
-
-
minerals (1)
-
oxides
-
boehmite (1)
-
gibbsite (1)
-
magnetite (1)
-
nordstrandite (1)
-
titanomaghemite (1)
-
titanomagnetite (1)
-
-
phosphates
-
apatite (1)
-
-
silicates
-
chain silicates
-
pyroxene group
-
clinopyroxene
-
pigeonite (2)
-
-
-
-
framework silicates
-
silica minerals
-
agate (1)
-
amethyst (3)
-
chalcedony (1)
-
cristobalite (1)
-
moganite (1)
-
opal (1)
-
quartz (1)
-
-
-
orthosilicates
-
nesosilicates
-
garnet group (1)
-
zircon group
-
zircon (7)
-
-
-
-
sheet silicates
-
clay minerals
-
kaolinite (1)
-
montmorillonite (1)
-
nontronite (1)
-
saponite (1)
-
-
mica group
-
phlogopite (1)
-
-
-
-
sulfates (1)
-
-
Primary terms
-
absolute age (14)
-
Africa
-
Central Africa
-
Angola (1)
-
Congo Democratic Republic
-
Kinshasa Congo Democratic Republic (1)
-
-
-
Southern Africa
-
Karoo Basin (4)
-
Namibia (7)
-
South Africa
-
Cape Province region (1)
-
-
Zimbabwe
-
Great Dyke (1)
-
-
-
-
Antarctica
-
Victoria Land (1)
-
-
Asia
-
Indian Peninsula
-
India (1)
-
-
-
Atlantic Ocean
-
South Atlantic
-
Rio Grande Rise (1)
-
Santos Basin (2)
-
Walvis Ridge (1)
-
-
-
Atlantic Ocean Islands
-
Tristan da Cunha (1)
-
-
Atlantic region (5)
-
Australasia
-
Australia (2)
-
-
biogeography (5)
-
carbon
-
C-13/C-12 (2)
-
-
Cenozoic
-
Quaternary
-
Holocene (2)
-
-
Tertiary
-
Neogene
-
Miocene
-
Columbia River Basalt Group (3)
-
-
-
Paleogene
-
Paleocene (1)
-
-
-
-
ceramic materials (1)
-
Chordata
-
Vertebrata
-
Pisces
-
Osteichthyes
-
Sarcopterygii
-
Dipnoi (1)
-
-
-
-
Tetrapoda
-
Mammalia (1)
-
-
-
-
clay deposits (1)
-
clay mineralogy (3)
-
climate change (2)
-
continental drift (3)
-
coprolites (1)
-
crust (4)
-
crystal chemistry (3)
-
crystal growth (1)
-
crystal structure (1)
-
data processing (3)
-
deformation (1)
-
diagenesis (5)
-
diamond deposits (1)
-
economic geology (5)
-
energy sources (1)
-
epeirogeny (2)
-
Europe
-
Western Europe
-
United Kingdom
-
Great Britain
-
Scotland
-
Hebrides (1)
-
-
-
-
-
-
explosions (1)
-
faults (3)
-
folds (1)
-
foliation (1)
-
gems (2)
-
geochemistry (7)
-
geochronology (1)
-
geomorphology (1)
-
geophysical methods (11)
-
glacial geology (10)
-
Graptolithina
-
Graptoloidea (1)
-
-
ground water (2)
-
heat flow (1)
-
hydrology (1)
-
ichnofossils (4)
-
igneous rocks
-
carbonatites (2)
-
kimberlite (1)
-
plutonic rocks
-
diabase (3)
-
granites (1)
-
lamproite (1)
-
lamprophyres (1)
-
pegmatite (1)
-
-
volcanic rocks
-
andesites (1)
-
basalts
-
flood basalts (10)
-
tholeiite (1)
-
-
phonolites (1)
-
rhyodacites (2)
-
rhyolites (1)
-
-
-
inclusions
-
fluid inclusions (1)
-
-
intrusions (10)
-
Invertebrata
-
Arthropoda
-
Mandibulata
-
Crustacea
-
Ostracoda (2)
-
-
Insecta
-
Pterygota
-
Neoptera
-
Exopterygota
-
Hemiptera (1)
-
-
-
-
-
-
Trilobitomorpha
-
Trilobita (2)
-
-
-
Brachiopoda
-
Articulata
-
Terebratulida (1)
-
-
-
Mollusca
-
Bivalvia (1)
-
Cephalopoda (1)
-
-
-
isotopes
-
radioactive isotopes
-
Pb-206/Pb-204 (2)
-
Pb-207/Pb-204 (1)
-
Pb-208/Pb-204 (1)
-
-
stable isotopes
-
C-13/C-12 (2)
-
O-18/O-16 (2)
-
Pb-206/Pb-204 (2)
-
Pb-207/Pb-204 (1)
-
Pb-208/Pb-204 (1)
-
-
-
lava (3)
-
magmas (4)
-
mantle (7)
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Aptian (2)
-
Barremian (1)
-
Berriasian (1)
-
Hauterivian (1)
-
Valanginian (1)
-
-
Upper Cretaceous
-
Bauru Group (1)
-
-
-
Jurassic
-
Clarens Formation (1)
-
Ferrar Group (1)
-
Upper Jurassic (2)
-
-
Serra Geral Formation (6)
-
Triassic
-
Lower Triassic
-
Permian-Triassic boundary (1)
-
-
Middle Triassic (1)
-
-
-
metals
-
alkaline earth metals
-
magnesium (1)
-
-
aluminum (1)
-
iron (1)
-
lead
-
Pb-206/Pb-204 (2)
-
Pb-207/Pb-204 (1)
-
Pb-208/Pb-204 (1)
-
-
-
metamorphic rocks
-
impactites
-
impact breccia (1)
-
-
-
metamorphism (2)
-
metasomatism (3)
-
mineral deposits, genesis (1)
-
mineral exploration (2)
-
minerals (1)
-
Mohorovicic discontinuity (2)
-
North America
-
Basin and Range Province (1)
-
Rio Grande Rift (1)
-
-
Ocean Drilling Program
-
Leg 185
-
ODP Site 1149 (1)
-
-
-
oxygen
-
O-18/O-16 (2)
-
-
Pacific Ocean
-
North Pacific
-
Northwest Pacific (1)
-
-
West Pacific
-
Northwest Pacific (1)
-
-
-
paleoclimatology (9)
-
paleoecology (7)
-
paleogeography (8)
-
paleomagnetism (5)
-
paleontology (2)
-
Paleozoic
-
Carboniferous
-
Pennsylvanian
-
Middle Pennsylvanian
-
Moscovian (1)
-
-
Upper Pennsylvanian
-
Kasimovian (1)
-
-
-
Upper Carboniferous (4)
-
-
Devonian
-
Lower Devonian
-
Furnas Formation (1)
-
-
Middle Devonian
-
Eifelian (1)
-
-
Ponta Grossa Formation (4)
-
Upper Devonian (1)
-
-
Itarare Subgroup (13)
-
Ordovician
-
Acoite Formation (1)
-
Upper Ordovician
-
Hirnantian (2)
-
-
-
Permian
-
Guadalupian
-
Roadian (1)
-
-
Irati Formation (7)
-
Lower Permian
-
Cisuralian
-
Artinskian (1)
-
Asselian (1)
-
Sakmarian (2)
-
-
-
Passa Dois Group (3)
-
Rio Bonito Formation (8)
-
Upper Permian
-
Permian-Triassic boundary (1)
-
Rio do Rasto Formation (2)
-
-
-
Silurian
-
Lower Silurian
-
Llandovery (5)
-
-
-
upper Paleozoic
-
Dwyka Formation (1)
-
Tubarao Group (1)
-
-
-
palynomorphs
-
acritarchs (5)
-
Chitinozoa (4)
-
miospores
-
pollen (1)
-
-
-
petroleum
-
natural gas (2)
-
-
petrology (1)
-
Phanerozoic (2)
-
Plantae
-
Bryophyta (1)
-
Spermatophyta
-
Gymnospermae
-
Cordaitales (1)
-
-
-
-
plate tectonics (8)
-
Precambrian
-
upper Precambrian
-
Proterozoic
-
Damara System (1)
-
Neoproterozoic
-
Ediacaran (1)
-
-
-
-
Waterberg System (1)
-
-
remote sensing (1)
-
sea-level changes (1)
-
sedimentary petrology (2)
-
sedimentary rocks
-
bauxite (1)
-
carbonate rocks
-
limestone (1)
-
-
chemically precipitated rocks
-
evaporites (1)
-
-
clastic rocks
-
bentonite (1)
-
black shale (1)
-
claystone (1)
-
conglomerate (1)
-
diamictite (4)
-
eolianite (3)
-
mudstone (3)
-
sandstone (10)
-
shale (4)
-
tillite (3)
-
tonstein (1)
-
-
coal (2)
-
oil shale (1)
-
-
sedimentary structures
-
bedding plane irregularities
-
scour marks (1)
-
-
biogenic structures
-
stromatolites (1)
-
-
planar bedding structures
-
bedding (1)
-
cross-laminations (3)
-
cross-stratification (1)
-
rhythmic bedding (1)
-
rhythmite (3)
-
-
rhizoliths (1)
-
secondary structures
-
geodes (2)
-
-
seismites (1)
-
soft sediment deformation
-
clastic dikes (1)
-
-
turbidity current structures (1)
-
-
sedimentation (6)
-
sediments
-
clastic sediments
-
alluvium (1)
-
sand (1)
-
silt (1)
-
-
marine sediments (1)
-
-
seismology (1)
-
soils (1)
-
South America
-
Amazon Basin (4)
-
Andes (1)
-
Argentina
-
Paganzo Basin (1)
-
Santa Cruz Argentina
-
Deseado Massif (1)
-
-
-
Bolivia (1)
-
Brazil
-
Amazonas Basin (2)
-
Goias Brazil (3)
-
Maranhao Basin (1)
-
Mato Grosso Brazil (4)
-
Mato Grosso do Sul Brazil (2)
-
Minas Gerais Brazil (2)
-
Parana Brazil (8)
-
Parnaiba Basin (3)
-
Pelotas Basin (1)
-
Rio Grande do Sul Brazil
-
Encruzilhada do Sul Brazil (2)
-
-
Santa Catarina Brazil (4)
-
Sao Francisco Craton (2)
-
Sao Paulo Brazil (11)
-
Serra do Espinhaco (1)
-
Serra do Mar (1)
-
Solimoes Basin (1)
-
-
Chile (1)
-
Colombia (1)
-
Paraguay (9)
-
Parana Basin (99)
-
Patagonia (1)
-
Uruguay (5)
-
-
stratigraphy (7)
-
structural analysis (1)
-
structural geology (2)
-
tectonics (4)
-
tectonophysics (2)
-
United States
-
Arizona (1)
-
Colorado Plateau (1)
-
Columbia Plateau (1)
-
Nevada (1)
-
Texas
-
Val Verde Basin (1)
-
West Texas (1)
-
-
Western U.S. (1)
-
Wyoming (1)
-
Yellowstone National Park (1)
-
-
volcanology (1)
-
water resources (1)
-
weathering (3)
-
-
rock formations
-
Botucatu Formation (6)
-
Choiyoi Group (1)
-
Deccan Traps (3)
-
Estrada Nova Formation (2)
-
Karoo Supergroup (2)
-
-
sedimentary rocks
-
sedimentary rocks
-
bauxite (1)
-
carbonate rocks
-
limestone (1)
-
-
chemically precipitated rocks
-
evaporites (1)
-
-
clastic rocks
-
bentonite (1)
-
black shale (1)
-
claystone (1)
-
conglomerate (1)
-
diamictite (4)
-
eolianite (3)
-
mudstone (3)
-
sandstone (10)
-
shale (4)
-
tillite (3)
-
tonstein (1)
-
-
coal (2)
-
oil shale (1)
-
-
siliciclastics (1)
-
volcaniclastics (1)
-
-
sedimentary structures
-
borings (1)
-
burrows (1)
-
coprolites (1)
-
sedimentary structures
-
bedding plane irregularities
-
scour marks (1)
-
-
biogenic structures
-
stromatolites (1)
-
-
planar bedding structures
-
bedding (1)
-
cross-laminations (3)
-
cross-stratification (1)
-
rhythmic bedding (1)
-
rhythmite (3)
-
-
rhizoliths (1)
-
secondary structures
-
geodes (2)
-
-
seismites (1)
-
soft sediment deformation
-
clastic dikes (1)
-
-
turbidity current structures (1)
-
-
striations (1)
-
tracks (2)
-
-
sediments
-
sediments
-
clastic sediments
-
alluvium (1)
-
sand (1)
-
silt (1)
-
-
marine sediments (1)
-
-
siliciclastics (1)
-
volcaniclastics (1)
-
-
soils
-
paleosols (1)
-
soils (1)
-
Parana Basin
Desertic siliciclastic stromatolites in the Upper Jurassic Guará Formation from southwestern Gondwana: Trapping and binding in a non-marine setting
Supercritical fluvial styles and the shifting aridity in the Early Triassic: the example of the Sanga do Cabral Formation, Paraná Basin, Brazil
Carbon dioxide storage efficiency involving the complex reservoir units associated with Irati and Rio Bonito Formations, Paraná Basin, Brazil
Tepees associated with mobility of evaporite sulfate: The case of the Irati Formation, Permian of Paraná Basin, Brazil
Facies, Geochemistry, and Ceramic Properties of Corumbataí Formation, Upper Permian of Paraná Basin, and its Application in the Ceramic Industry, Brazil
Revision of the Devonian acritarch genus Pyloferites Quadros 1999 based on palynomorph assemblages from Brazil
A quantitative depositional model of a large distributive fluvial system (Megafan) with terminal aeolian interaction: The Upper Jurassic Guará DFS in southwestern Gondwana
The first record of Hirnantian Ostracoda in South America: implications for the biostratigraphy and paleozoogeography of the Paraná basin
ABSTRACT Constraints on impact-related hydrothermal alteration are important to enable the reconstruction of the possible processes affecting the surface of other terrestrial planets, such as Mars. Terrestrial impact structures excavated in basaltic targets provide the opportunity for analog studies. In Brazil, seven impact structures have been confirmed so far. Three of them, Vargeão Dome, Vista Alegre, and Cerro do Jarau, were formed in the same basaltic province belonging to the Paraná Basin, and they have several common characteristics. Oxidized basaltic breccias locally containing sandstone clasts occur in all these structures. In this work, selected samples of such breccias from the Vargeão Dome impact structure in southern Brazil were petrographically and geochemically investigated to further constrain the effects of the postimpact hydrothermal alteration. The breccia matrix shows typical oxidation effects induced by postimpact hydrothermal fluids, which highlight its heterogeneous nature, related to the impact event, and mixing components from different pre-impact stratigraphic formations. The detection of partially dissolved exsolution lamellae in pyroxene and of related alteration products constrains the effects of hydrothermal alteration in the basalts of the Vargeão Dome, which could serve as a terrestrial analog for planetary studies.