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
-
North Africa
-
Morocco (1)
-
-
-
Atlantic Ocean
-
North Atlantic
-
Bay of Fundy (1)
-
Georges Bank (1)
-
-
-
Atlantic region (1)
-
Canada
-
Eastern Canada
-
Maritime Provinces
-
Nova Scotia
-
Hants County Nova Scotia (1)
-
Minas Basin (5)
-
-
-
-
-
Europe
-
Southern Europe
-
Italy
-
Sicily Italy (1)
-
-
-
-
Hartford Basin (11)
-
North America
-
Appalachians (2)
-
-
Palisades Sill (3)
-
Richmond Basin (7)
-
United States
-
Arizona (1)
-
Atlantic Coastal Plain (8)
-
Colorado (1)
-
Connecticut
-
Hartford County Connecticut (1)
-
-
Connecticut Valley (3)
-
Culpeper Basin (6)
-
Dan River basin (3)
-
Eastern U.S. (9)
-
Georgia (1)
-
Gettysburg Basin (2)
-
Maryland
-
Montgomery County Maryland (1)
-
-
Massachusetts
-
Franklin County Massachusetts (1)
-
Hampden County Massachusetts (1)
-
-
New England (3)
-
New Jersey
-
Bergen County New Jersey (1)
-
Hudson County New Jersey (2)
-
Hunterdon County New Jersey (1)
-
Mercer County New Jersey (1)
-
Somerset County New Jersey (1)
-
-
New Mexico (1)
-
New York (2)
-
Newark Basin (18)
-
North Carolina
-
Chatham County North Carolina (1)
-
-
Pennsylvania
-
York County Pennsylvania (1)
-
-
Potomac River (1)
-
Texas (1)
-
Utah (2)
-
Virginia
-
Chesterfield County Virginia (1)
-
Pittsylvania County Virginia (1)
-
Prince William County Virginia (1)
-
-
-
-
commodities
-
construction materials
-
building stone (1)
-
-
energy sources (5)
-
metal ores
-
iron ores (1)
-
-
mineral deposits, genesis (1)
-
petroleum
-
natural gas
-
coalbed methane (1)
-
-
-
-
elements, isotopes
-
carbon
-
C-13/C-12 (2)
-
-
isotope ratios (1)
-
isotopes
-
stable isotopes
-
C-13/C-12 (2)
-
O-18/O-16 (2)
-
-
-
metals
-
actinides
-
uranium (1)
-
-
iron (1)
-
manganese (1)
-
rare earths (1)
-
-
oxygen
-
O-18/O-16 (2)
-
-
trace metals (1)
-
-
fossils
-
burrows (2)
-
Chordata
-
Vertebrata
-
Pisces
-
Osteichthyes
-
Actinopterygii (1)
-
-
-
Tetrapoda
-
Aves (1)
-
Reptilia
-
Diapsida
-
Archosauria
-
dinosaurs (1)
-
Thecodontia
-
Aetosauria (1)
-
-
-
Lepidosauria
-
Rhynchocephalia (1)
-
-
-
-
-
-
-
ichnofossils (4)
-
Invertebrata
-
Arthropoda
-
Mandibulata
-
Crustacea
-
Branchiopoda (1)
-
Ostracoda (1)
-
-
Insecta
-
Pterygota
-
Neoptera
-
Endopterygota
-
Diptera (1)
-
-
-
-
-
-
-
-
microfossils
-
Conodonta (1)
-
-
palynomorphs
-
miospores
-
pollen (2)
-
-
-
tracks (2)
-
-
geochronology methods
-
fission-track dating (1)
-
K/Ar (1)
-
paleomagnetism (5)
-
U/Pb (3)
-
-
geologic age
-
Mesozoic
-
Jurassic
-
Lower Jurassic
-
East Berlin Formation (2)
-
Feltville Formation (1)
-
Portland Formation (1)
-
Toarcian (1)
-
Triassic-Jurassic boundary (1)
-
upper Liassic (1)
-
-
-
lower Mesozoic (1)
-
Newark Supergroup (47)
-
Passaic Formation (2)
-
Triassic
-
Middle Triassic
-
Ladinian (1)
-
-
Upper Triassic
-
Carnian (7)
-
Chinle Formation (3)
-
Dockum Group (1)
-
Lockatong Formation (2)
-
Norian (3)
-
Rhaetian (2)
-
Triassic-Jurassic boundary (1)
-
-
-
-
-
igneous rocks
-
igneous rocks
-
granophyre (1)
-
plutonic rocks
-
diabase (3)
-
gabbros (1)
-
granites (1)
-
pegmatite (1)
-
-
volcanic rocks
-
basalts (3)
-
-
-
-
metamorphic rocks
-
metamorphic rocks
-
gneisses (1)
-
metasedimentary rocks (1)
-
schists (1)
-
-
turbidite (1)
-
-
minerals
-
carbonates
-
calcite (2)
-
dolomite (1)
-
-
minerals (1)
-
oxides
-
baddeleyite (1)
-
-
phosphates
-
apatite (2)
-
-
silicates
-
chain silicates
-
pyroxene group
-
clinopyroxene
-
augite (1)
-
pigeonite (1)
-
-
-
-
framework silicates
-
silica minerals
-
chalcedony (1)
-
opal (1)
-
quartz (2)
-
-
-
orthosilicates
-
nesosilicates
-
olivine group
-
olivine (1)
-
-
zircon group
-
zircon (2)
-
-
-
-
sheet silicates
-
chlorite group
-
chlorite (2)
-
-
clay minerals
-
kaolinite (1)
-
smectite (1)
-
vermiculite (1)
-
-
illite (1)
-
-
-
sulfates
-
gypsum (1)
-
-
-
Primary terms
-
absolute age (4)
-
Africa
-
North Africa
-
Morocco (1)
-
-
-
Atlantic Ocean
-
North Atlantic
-
Bay of Fundy (1)
-
Georges Bank (1)
-
-
-
Atlantic region (1)
-
biogeography (2)
-
Canada
-
Eastern Canada
-
Maritime Provinces
-
Nova Scotia
-
Hants County Nova Scotia (1)
-
Minas Basin (5)
-
-
-
-
-
carbon
-
C-13/C-12 (2)
-
-
Chordata
-
Vertebrata
-
Pisces
-
Osteichthyes
-
Actinopterygii (1)
-
-
-
Tetrapoda
-
Aves (1)
-
Reptilia
-
Diapsida
-
Archosauria
-
dinosaurs (1)
-
Thecodontia
-
Aetosauria (1)
-
-
-
Lepidosauria
-
Rhynchocephalia (1)
-
-
-
-
-
-
-
clay mineralogy (3)
-
construction materials
-
building stone (1)
-
-
continental drift (2)
-
diagenesis (5)
-
economic geology (5)
-
energy sources (5)
-
Europe
-
Southern Europe
-
Italy
-
Sicily Italy (1)
-
-
-
-
geochemistry (5)
-
geochronology (2)
-
ground water (1)
-
ichnofossils (4)
-
igneous rocks
-
granophyre (1)
-
plutonic rocks
-
diabase (3)
-
gabbros (1)
-
granites (1)
-
pegmatite (1)
-
-
volcanic rocks
-
basalts (3)
-
-
-
inclusions
-
fluid inclusions (1)
-
-
intrusions (5)
-
Invertebrata
-
Arthropoda
-
Mandibulata
-
Crustacea
-
Branchiopoda (1)
-
Ostracoda (1)
-
-
Insecta
-
Pterygota
-
Neoptera
-
Endopterygota
-
Diptera (1)
-
-
-
-
-
-
-
-
isotopes
-
stable isotopes
-
C-13/C-12 (2)
-
O-18/O-16 (2)
-
-
-
lava (2)
-
magmas (4)
-
marine geology (1)
-
Mesozoic
-
Jurassic
-
Lower Jurassic
-
East Berlin Formation (2)
-
Feltville Formation (1)
-
Portland Formation (1)
-
Toarcian (1)
-
Triassic-Jurassic boundary (1)
-
upper Liassic (1)
-
-
-
lower Mesozoic (1)
-
Newark Supergroup (47)
-
Passaic Formation (2)
-
Triassic
-
Middle Triassic
-
Ladinian (1)
-
-
Upper Triassic
-
Carnian (7)
-
Chinle Formation (3)
-
Dockum Group (1)
-
Lockatong Formation (2)
-
Norian (3)
-
Rhaetian (2)
-
Triassic-Jurassic boundary (1)
-
-
-
-
metal ores
-
iron ores (1)
-
-
metals
-
actinides
-
uranium (1)
-
-
iron (1)
-
manganese (1)
-
rare earths (1)
-
-
metamorphic rocks
-
gneisses (1)
-
metasedimentary rocks (1)
-
schists (1)
-
-
metamorphism (2)
-
mineral deposits, genesis (1)
-
minerals (1)
-
museums (1)
-
North America
-
Appalachians (2)
-
-
oceanography (1)
-
oxygen
-
O-18/O-16 (2)
-
-
paleobotany (1)
-
paleoclimatology (4)
-
paleoecology (1)
-
paleogeography (3)
-
paleomagnetism (5)
-
paleontology (4)
-
palynomorphs
-
miospores
-
pollen (2)
-
-
-
petroleum
-
natural gas
-
coalbed methane (1)
-
-
-
petrology (1)
-
plate tectonics (2)
-
reservoirs (1)
-
sea-level changes (1)
-
sedimentary petrology (4)
-
sedimentary rocks
-
carbonate rocks
-
limestone (2)
-
-
chemically precipitated rocks
-
evaporites (2)
-
-
clastic rocks
-
claystone (1)
-
conglomerate (4)
-
mudstone (3)
-
red beds (7)
-
sandstone (7)
-
shale (2)
-
siltstone (1)
-
-
-
sedimentary structures
-
bedding plane irregularities
-
ripple marks (1)
-
-
planar bedding structures
-
cross-bedding (1)
-
cross-laminations (1)
-
cyclothems (1)
-
sand bodies (1)
-
-
rhizoliths (1)
-
soft sediment deformation (1)
-
-
sedimentation (8)
-
sediments (1)
-
stratigraphy (10)
-
tectonics (4)
-
United States
-
Arizona (1)
-
Atlantic Coastal Plain (8)
-
Colorado (1)
-
Connecticut
-
Hartford County Connecticut (1)
-
-
Connecticut Valley (3)
-
Culpeper Basin (6)
-
Dan River basin (3)
-
Eastern U.S. (9)
-
Georgia (1)
-
Gettysburg Basin (2)
-
Maryland
-
Montgomery County Maryland (1)
-
-
Massachusetts
-
Franklin County Massachusetts (1)
-
Hampden County Massachusetts (1)
-
-
New England (3)
-
New Jersey
-
Bergen County New Jersey (1)
-
Hudson County New Jersey (2)
-
Hunterdon County New Jersey (1)
-
Mercer County New Jersey (1)
-
Somerset County New Jersey (1)
-
-
New Mexico (1)
-
New York (2)
-
Newark Basin (18)
-
North Carolina
-
Chatham County North Carolina (1)
-
-
Pennsylvania
-
York County Pennsylvania (1)
-
-
Potomac River (1)
-
Texas (1)
-
Utah (2)
-
Virginia
-
Chesterfield County Virginia (1)
-
Pittsylvania County Virginia (1)
-
Prince William County Virginia (1)
-
-
-
weathering (1)
-
-
rock formations
-
New Red Sandstone (1)
-
Stockton Formation (1)
-
-
sedimentary rocks
-
calcrete (1)
-
caliche (1)
-
sedimentary rocks
-
carbonate rocks
-
limestone (2)
-
-
chemically precipitated rocks
-
evaporites (2)
-
-
clastic rocks
-
claystone (1)
-
conglomerate (4)
-
mudstone (3)
-
red beds (7)
-
sandstone (7)
-
shale (2)
-
siltstone (1)
-
-
-
turbidite (1)
-
-
sedimentary structures
-
burrows (2)
-
sedimentary structures
-
bedding plane irregularities
-
ripple marks (1)
-
-
planar bedding structures
-
cross-bedding (1)
-
cross-laminations (1)
-
cyclothems (1)
-
sand bodies (1)
-
-
rhizoliths (1)
-
soft sediment deformation (1)
-
-
stratification (1)
-
tracks (2)
-
-
sediments
-
sediments (1)
-
turbidite (1)
-
-
soils
-
paleosols (1)
-
GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Newark Supergroup
Trackways in the New Red Sandstone of the Connecticut River Valley, USA, the cradle of ichnology Available to Purchase
Abstract Fossil trackways in the Jura-Triassic rift basin of the Connecticut River Valley are important to geoheritage for their quality, preservation, and role in the history of geology, especially of ichnology. Discovered in the early 1800s, these trackways of small to large, bipedal, three-toed animals came to the attention of Edward Hitchcock, a prolific geologist and natural theologian. His first publication on the subject was in January 1836 and, in the same year, William Buckland included parts of the report, with illustrations, in his Bridgewater Treatise. Hitchcock and Buckland are credited with establishing the field of ichnology, the study of track and trails. Within the first decade, other traces documented include four-footed tracks, fish fossils, invertebrate burrows, plant impressions, ripple marks and raindrop impressions; few bones have ever been discovered in the valley. Early fossil-track collectors included Hitchcock, James Deane, Dexter Marsh and Roswell Field. Specimens quickly made their way to Europe, and publications brought the tracks to international attention, in both science and literature. In nineteenth-century discussions, the three-toed trackway makers – birds or dinosaurs? – were particular subjects of interest and debate. These fossil trackways remain well known and studied today, with several preserved field sites and museum collections.
Detrital zircon and apatite U-Pb provenance and drainage evolution of the Newark Basin during progressive rifting and continental breakup along the Eastern North American Margin, USA Open Access
A new early-diverging sphenodontian (Lepidosauria, Rhynchocephalia) from the Upper Triassic of Virginia, U.S.A. Available to Purchase
Seneca sandstone: a heritage stone from the USA Available to Purchase
Abstract Seneca sandstone is a fine-grained arkosic sandstone of dark-red coloration used primarily during the nineteenth century in Washington, DC. Several inactive Seneca sandstone quarries are located along the Potomac River 34 km NW of Washington near Poolesville, Maryland. Seneca sandstone is from part of the Poolesville Member of the Upper Triassic Manassas Formation, which is in turn a Member of the Newark Supergroup that crops out in eastern North America. Its first major public use is associated with George Washington, the first president of the Potomac Company founded in 1785 to improve the navigability of the Potomac River, with the goal of opening transportation to the west for shipping. The subsequent Chesapeake and Ohio Canal built parallel to the river made major use of Seneca sandstone in its construction and then facilitated the stone's transport to the capital for the construction industry. The most significant building for which the stone was used is the Smithsonian Institution Building or ‘Castle’ (1847–55), the first building of the Smithsonian Institution and still its administrative centre. Many churches, school buildings and homes in the city were built wholly or partially with the stone during the ‘brown decades’ of the latter half of the nineteenth century.
A new species of Coahomasuchus (Archosauria, Aetosauria) from the Upper Triassic Pekin Formation, Deep River Basin, North Carolina Available to Purchase
A new reconstruction of continental Treptichnus based on exceptionally preserved material from the Jurassic of Massachusetts Available to Purchase
Geology and Hydrocarbon Potential of the Richmond Basin, Virginia Available to Purchase
Abstract The Richmond basin, a rift basin of Late Triassic to Early Jurassic age in east-central Virginia, produced the first coal mined in the United States in the early 1700s. These Triassic coal beds are thick and gas-rich, and fatal explosions were common during the early history of exploitation. Since 1897, at least 38 confirmed oil, natural gas, and coal tests have been drilled within the basin. Although shows of asphaltic petroleum and natural gas indicate that active petroleum systems existed therein, no economic hydrocarbon accumulations have been discovered to-date. The Richmond basin has been assessed by the U. S. Geological Survey (USGS) as one composite total petroleum system, in which the hydrocarbon potential of the source beds (both coal and dark shale) and potential reservoirs have been combined into a single continuous tight gas assessment unit within the Chesterfield and Tuckahoe groups (Upper Triassic). Sandstone porosities are generally low (<1 % to 14 %). Thick, dark-colored shales have total organic carbon (TOC) values that range from <1% to 10%, and vitrinite reflectance (%R O) values that range generally from about 0.3 to 1.1%, which indicates that the submature to super mature shales appear to be the source of the hydrocarbons recovered from some of the boreholes. The stratigraphic combination of these potential source rocks, tight sandstones, and hydrocarbon shows are the basis for the current USGS assessment of the technically recoverable undiscovered hydrocarbon resources of the basin. Mean values for these resources are 211 billion cubic feet of gas (BCFG) and 11 million barrels of natural gas liquids (MMBNGL).
Controls on the stratigraphic development of the Triassic Fundy Basin, Nova Scotia: implications for the tectonostratigraphic evolution of Triassic Atlantic rift basins Available to Purchase
QUANTITATIVE TAPHONOMY OF A TRIASSIC REPTILE TANYTRACHELOS AHYNIS FROM THE COW BRANCH FORMATION, DAN RIVER BASIN, SOLITE QUARRY, VIRGINIA Available to Purchase
Calcite cement stratigraphy of a nonpedogenic calcrete in the Triassic New Haven Arkose (Newark Supergroup) Available to Purchase
Nonpedogenic calcrete is difficult to distinguish from pedogenic calcrete in the fossil record; both alpha and beta textures have been observed from fossil and modern examples. However, a calcrete from the New Haven Arkose (Hartford Basin, Connecticut) is shown here to be of a nonpedogenic origin through sedimentologic and petrographic evidence. An accumulation of thin sheets of displacive calcite layers found in a decimeter-thick horizon of anastomosing veins within the upper portion of a red mudstone is correlated to calcite cement found in the overlying sandstone. Based on petrography, we recognize six generations of calcite in the mudstone-sandstone hosts. The first five generations are associated with rhizoliths that can be related to deep taproots and are interpreted to have formed by precipitation from shallow groundwater. There are no vadose-type cement morphologies; the calcite has luminescent zones, indicating that Mn was soluble and thus oxygen levels were low. These cements clearly formed several meters below what would have been the surface of the channel sand body. We suggest that calcite cement stratigraphy combined with redox models for the behavior of Mn (as well as Fe and U) may aid in the identification of nonpedogenic versus pedogenic carbonates in the geologic record. Additionally, the calcite from this carbonate layer has been dated using the U-Pb method. Our results provide insight into the environmental and diagenetic fluid conditions favorable for providing a spread in U/Pb ratios that are suitable for precise dating of calcites in otherwise undateable sections. Las calcretas no-pedogénicas son difíciles de diferenciar de las pedogénicas en el registro antiguo; los dos tipos de textura alfa y beta se reconocen en depósitos antiguos y recientes. Sin embargo, en el caso concreto de la calcreta de New Haven Arkose (Cuenca Hartford, Connecticut), los datos sedimentológicos y las evidencias petrográficas permiten demostrar su origen no-pedogénico. La presencia, dentro de lutitas rojas, de finas capas de calcita desplazativa dentro de un horizonte decimétrico de venas anastomosadas se puede correlacionar con la formación de cemento calcítico en las areniscas infrayacentes a dichas lutitas rojas. Petrográficametne se reconocen seis generaciones de calcita en las lutitas y areniscas que constituyen el sustrato. Las cinco primeras generaciones están asociadas con rizolitos de sistemas radiculares profundos y se pudieron formar por precipitación a partir de aguas freáticas someras. No hay cementos vadosos y la calcita tiene zonas luminiscentes indicando que el Mn era soluble y, por tanto, los niveles de oxígeno bajos. Estos cementos se formaron claramente varios metros por debajo de lo que fue la superficie del canal de arenas. Sugerimos que la estratigrafía de los cementos de calcita combinada con los modelos redox de comportamiento de Mn (también Fe y U) pueden ayudar en la identificación de los carbonatos pedogénicos y no-pedogénicos en el registro geológico. Además la calcita de esta capa carbonática se ha datado por el método de U-Pb. Nuestros resultados permiten una mejor caracterización de las condiciones ambientales y de los tipos de fluidos más favorables para ampliar el rango de valores U/Pb necesarios para datar calcitas en secciones que de otro modo no se podrían datar.
Tethyan magnetostratigraphy from Pizzo Mondello (Sicily) and correlation to the Late Triassic Newark astrochronological polarity time scale Available to Purchase
An unusual new archosauromorph reptile from the Upper Triassic Wolfville Formation of Nova Scotia Available to Purchase
Paleofluid-flow circulation within a Triassic rift basin: Evidence from oil inclusions and thermal histories Available to Purchase
A search for shocked quartz at the Triassic-Jurassic boundary in the Fundy and Newark basins of the Newark Supergroup Free
Origin of fibrous gypsum in the Newark rift basin, eastern North America Available to Purchase
Synthesis and revision of groups within the Newark Supergroup, eastern North America Available to Purchase
Biogeographic and stratigraphic evidence for rapid speciation in semionotid fishes Free
High-resolution stratigraphy of the Newark rift basin (early Mesozoic, eastern North America) Available to Purchase
Geologically rapid Late Triassic extinctions: Palynological evidence from the Newark Supergroup Available to Purchase
Orbitally controlled, sedimentary cycles of the Newark Supergroup permit palyniferous Late Triassic sections to be calibrated in time. Carnian palynofloras from the Richmond basin exhibit 2-m.y. fluctuations in the spore/pollen ratio, but taxonomic composition remains stable. Diversity of Norian and Rhaetian palynofloras increases prior to a 60% reduction at the Triassic/Jurassic boundary. The extinction of Late Triassic palynomorph species is coincident with a spike in the spore/pollen ratio and approximately synchronous with the last appearances of tetrapod taxa and ichnofossil genera. This geologically brief episode of biotic turnover is consistent with bolide impact hypotheses.