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NARROW
Format
Article Type
Journal
Publisher
Section
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
North Africa
-
Libya
-
Murzuk Basin (1)
-
-
-
Southern Africa
-
Karoo Basin (1)
-
Namibia (1)
-
South Africa
-
Cape Province region (1)
-
KwaZulu-Natal South Africa (1)
-
-
-
-
Alpine Fault (1)
-
Antarctica
-
Antarctic ice sheet (1)
-
East Antarctica (1)
-
Ellsworth Land
-
Ellsworth Mountains (1)
-
-
Queen Maud Land
-
Schirmacher Hills (1)
-
-
Victoria Land
-
Allan Hills (2)
-
-
West Antarctica (1)
-
-
Arctic Ocean (1)
-
Arctic region
-
Svalbard
-
Spitsbergen (2)
-
-
-
Asia
-
Arabian Peninsula
-
Oman (1)
-
-
Baikal rift zone (2)
-
Central Asia
-
Pamirs (1)
-
-
Far East
-
China
-
Henan China (1)
-
Inner Mongolia China (1)
-
North China Platform (1)
-
Sichuan Basin (1)
-
Sichuan China (1)
-
Xizang China (1)
-
-
Japan
-
Honshu
-
Akita Japan
-
Shakanai Mine (1)
-
-
-
-
Taiwan (1)
-
-
Himalayas (1)
-
Indian Peninsula
-
India
-
Ajay River (1)
-
Bihar India (1)
-
Madhya Pradesh India (1)
-
West Bengal India
-
Darjeeling India (1)
-
-
-
Pakistan (1)
-
-
Irkutsk Russian Federation (1)
-
Middle East
-
Dead Sea Rift (1)
-
Israel
-
Negev (1)
-
-
Turkey
-
Anatolia (1)
-
North Anatolian Fault (1)
-
-
-
Qiangtang Terrane (1)
-
Tajikistan (1)
-
-
Atlantic Ocean
-
Mid-Atlantic Ridge (1)
-
North Atlantic
-
Bay of Fundy (1)
-
Hudson Bay (1)
-
-
-
Australasia
-
New Zealand (1)
-
-
Canada
-
Arctic Archipelago (2)
-
Eastern Canada
-
Maritime Provinces
-
New Brunswick (2)
-
Nova Scotia
-
Cape Breton Island (1)
-
-
-
Newfoundland and Labrador
-
Newfoundland (2)
-
-
Ontario
-
Bruce Peninsula (1)
-
Timiskaming District Ontario (1)
-
Toronto Ontario (1)
-
-
Quebec
-
Eastern Townships (1)
-
Gaspe Peninsula (1)
-
Saint Lawrence Estuary (1)
-
-
-
Hudson Bay (1)
-
Mackenzie Mountains (1)
-
Nunavut
-
Ellesmere Island (1)
-
Sverdrup Islands
-
Amund Ringnes Island (1)
-
-
-
Queen Elizabeth Islands
-
Ellesmere Island (1)
-
Sverdrup Islands
-
Amund Ringnes Island (1)
-
-
-
Western Canada
-
Alberta
-
Athabasca Glacier (1)
-
-
British Columbia (1)
-
Canadian Rocky Mountains (2)
-
Manitoba (2)
-
Northwest Territories (4)
-
Saskatchewan (1)
-
Yukon Territory (1)
-
-
-
Caribbean region (1)
-
Central America
-
Costa Rica
-
Nicoya Peninsula (1)
-
-
Panama (1)
-
-
Commonwealth of Independent States
-
Russian Federation
-
Baikal rift zone (2)
-
Irkutsk Russian Federation (1)
-
-
Tajikistan (1)
-
-
East Pacific Ocean Islands
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (1)
-
-
-
-
-
Europe
-
Alps (1)
-
Southern Europe
-
Italy
-
Apennines (1)
-
Molise Italy
-
Campobasso Italy (1)
-
-
Sardinia Italy (1)
-
-
-
Western Europe
-
France
-
Alpes-de-Haute Provence France
-
Digne France (1)
-
-
Corsica (1)
-
Herault France (1)
-
Provence (1)
-
-
Scandinavia
-
Norway
-
Finnmark Norway
-
Varanger Fjord (2)
-
-
Northern Norway (1)
-
-
-
United Kingdom
-
Great Britain
-
England
-
Dorset England (1)
-
-
Scotland
-
Highland region Scotland
-
Caithness Scotland (1)
-
-
Moray Firth (1)
-
-
Wales
-
South Wales (1)
-
-
-
-
-
-
Indian Ocean
-
Arabian Sea (1)
-
-
James River (1)
-
Middleton Island (1)
-
Midland Valley (1)
-
North America
-
Appalachians
-
Appalachian Plateau (1)
-
Blue Ridge Province (1)
-
Piedmont (1)
-
-
Canadian Shield
-
Superior Province
-
Abitibi Belt (1)
-
-
-
Great Lakes
-
Lake Superior (1)
-
-
Great Lakes region (2)
-
Great Plains (1)
-
Michigan Basin (1)
-
Rocky Mountains
-
Canadian Rocky Mountains (2)
-
-
Saint Lawrence Lowlands (1)
-
Saint Lawrence River (1)
-
-
North Island (1)
-
Oceania
-
Polynesia
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (1)
-
-
-
-
-
-
Pacific Ocean
-
East Pacific
-
Cocos Ridge (1)
-
Northeast Pacific
-
Gulf of Alaska (1)
-
Middle America Trench (1)
-
-
-
North Pacific
-
Northeast Pacific
-
Gulf of Alaska (1)
-
Middle America Trench (1)
-
-
-
South Pacific
-
Southwest Pacific
-
Hikurangi Trough (1)
-
-
-
West Pacific
-
Southwest Pacific
-
Hikurangi Trough (1)
-
-
-
-
polar regions (1)
-
Saint John River (1)
-
South America
-
Brazil
-
Parana Brazil (1)
-
-
Parana Basin (1)
-
Peru
-
Cusco Peru (2)
-
-
-
United States
-
Alaska (1)
-
California (3)
-
Colorado (1)
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (1)
-
-
-
-
Iowa (1)
-
Kansas
-
Logan County Kansas (1)
-
-
Klamath Mountains (1)
-
Maine
-
Aroostook County Maine (2)
-
Piscataquis County Maine (1)
-
Somerset County Maine (1)
-
-
Michigan (1)
-
Minnesota (1)
-
Missouri River (1)
-
Nebraska (1)
-
Nevada
-
Mormon Mountains (1)
-
-
New England (1)
-
Sevier orogenic belt (1)
-
South Dakota (2)
-
Southwestern U.S. (1)
-
Utah (3)
-
Virginia (1)
-
West Virginia
-
Greenbrier County West Virginia (1)
-
Mercer County West Virginia (1)
-
Pocahontas County West Virginia (1)
-
-
Wisconsin
-
Manitowoc County Wisconsin (1)
-
-
Wyoming
-
Heart Mountain Fault (1)
-
-
-
-
commodities
-
barite deposits (1)
-
gems (1)
-
metal ores
-
base metals (1)
-
copper ores (1)
-
lead ores (1)
-
polymetallic ores (1)
-
silver ores (1)
-
zinc ores (1)
-
-
mineral deposits, genesis (2)
-
mineral exploration (4)
-
petroleum
-
natural gas (1)
-
-
placers (1)
-
tight sands (1)
-
-
elements, isotopes
-
carbon
-
C-14 (3)
-
-
isotope ratios (2)
-
isotopes
-
radioactive isotopes
-
Al-26 (1)
-
Be-10 (1)
-
C-14 (3)
-
-
stable isotopes
-
O-18/O-16 (1)
-
Sr-87/Sr-86 (1)
-
-
-
Lu/Hf (1)
-
metals
-
alkaline earth metals
-
beryllium
-
Be-10 (1)
-
-
strontium
-
Sr-87/Sr-86 (1)
-
-
-
aluminum
-
Al-26 (1)
-
-
precious metals (1)
-
rare earths
-
yttrium (1)
-
-
-
noble gases
-
radon (1)
-
-
oxygen
-
O-18/O-16 (1)
-
-
-
fossils
-
burrows (1)
-
Chordata
-
Vertebrata
-
Tetrapoda
-
Mammalia (1)
-
-
-
-
ichnofossils (1)
-
Invertebrata
-
Arthropoda (1)
-
-
palynomorphs (1)
-
tracks (1)
-
-
geochronology methods
-
exposure age (1)
-
Lu/Hf (1)
-
paleomagnetism (1)
-
Th/U (2)
-
U/Pb (1)
-
uranium disequilibrium (1)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Cordilleran ice sheet (1)
-
Holocene
-
upper Holocene (1)
-
-
Pleistocene
-
lower Pleistocene
-
Calabrian (1)
-
-
middle Pleistocene (1)
-
upper Pleistocene
-
Wisconsinan
-
upper Wisconsinan (2)
-
-
-
-
upper Quaternary (1)
-
-
Tertiary
-
Neogene
-
Miocene
-
upper Miocene
-
Messinian (1)
-
-
-
Pliocene
-
lower Pliocene
-
Zanclean (1)
-
-
-
-
Paleogene
-
Eocene
-
upper Eocene (1)
-
-
Oligocene (1)
-
-
-
Yakataga Formation (1)
-
-
Laurentide ice sheet (7)
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Berriasian (1)
-
-
Upper Cretaceous
-
Niobrara Formation (1)
-
Pierre Shale (1)
-
-
-
Triassic
-
Upper Triassic
-
Xujiahe Formation (1)
-
-
-
-
Paleozoic
-
Carboniferous
-
Mississippian
-
Lower Mississippian (1)
-
Price Formation (1)
-
-
Upper Carboniferous
-
Talchir Series (1)
-
-
-
Devonian (1)
-
Ordovician
-
Upper Ordovician (1)
-
-
Permian
-
Lower Permian
-
Al Khlata Formation (1)
-
-
-
Silurian
-
Middle Silurian
-
Guelph Formation (1)
-
-
Niagaran (1)
-
-
upper Paleozoic
-
Dwyka Formation (3)
-
-
-
Precambrian
-
upper Precambrian
-
Proterozoic
-
Neoproterozoic
-
Ediacaran (1)
-
-
Paleoproterozoic
-
Michigamme Formation (1)
-
-
Windermere System (1)
-
-
-
-
-
igneous rocks
-
igneous rocks
-
plutonic rocks
-
granites (3)
-
pegmatite (1)
-
-
volcanic rocks
-
andesites (2)
-
basalts (2)
-
pyroclastics
-
tuff (1)
-
-
rhyolites (2)
-
-
-
-
metamorphic rocks
-
metamorphic rocks
-
amphibolites (1)
-
cataclasites (3)
-
gneisses (1)
-
metasomatic rocks
-
greisen (1)
-
-
mylonites
-
pseudotachylite (1)
-
-
quartzites (3)
-
schists (2)
-
-
-
minerals
-
carbonates
-
calcite (2)
-
-
halides
-
fluorides
-
topaz (1)
-
-
-
minerals (1)
-
silicates
-
asbestos (1)
-
framework silicates
-
silica minerals
-
quartz (1)
-
-
-
orthosilicates
-
nesosilicates
-
topaz (1)
-
zircon group
-
zircon (1)
-
-
-
-
sheet silicates (1)
-
-
sulfides
-
pyrite (1)
-
-
uranium minerals (1)
-
vanadates
-
carnotite (1)
-
-
-
Primary terms
-
absolute age (5)
-
Africa
-
North Africa
-
Libya
-
Murzuk Basin (1)
-
-
-
Southern Africa
-
Karoo Basin (1)
-
Namibia (1)
-
South Africa
-
Cape Province region (1)
-
KwaZulu-Natal South Africa (1)
-
-
-
-
Antarctica
-
Antarctic ice sheet (1)
-
East Antarctica (1)
-
Ellsworth Land
-
Ellsworth Mountains (1)
-
-
Queen Maud Land
-
Schirmacher Hills (1)
-
-
Victoria Land
-
Allan Hills (2)
-
-
West Antarctica (1)
-
-
Arctic Ocean (1)
-
Arctic region
-
Svalbard
-
Spitsbergen (2)
-
-
-
Asia
-
Arabian Peninsula
-
Oman (1)
-
-
Baikal rift zone (2)
-
Central Asia
-
Pamirs (1)
-
-
Far East
-
China
-
Henan China (1)
-
Inner Mongolia China (1)
-
North China Platform (1)
-
Sichuan Basin (1)
-
Sichuan China (1)
-
Xizang China (1)
-
-
Japan
-
Honshu
-
Akita Japan
-
Shakanai Mine (1)
-
-
-
-
Taiwan (1)
-
-
Himalayas (1)
-
Indian Peninsula
-
India
-
Ajay River (1)
-
Bihar India (1)
-
Madhya Pradesh India (1)
-
West Bengal India
-
Darjeeling India (1)
-
-
-
Pakistan (1)
-
-
Irkutsk Russian Federation (1)
-
Middle East
-
Dead Sea Rift (1)
-
Israel
-
Negev (1)
-
-
Turkey
-
Anatolia (1)
-
North Anatolian Fault (1)
-
-
-
Qiangtang Terrane (1)
-
Tajikistan (1)
-
-
Atlantic Ocean
-
Mid-Atlantic Ridge (1)
-
North Atlantic
-
Bay of Fundy (1)
-
Hudson Bay (1)
-
-
-
Australasia
-
New Zealand (1)
-
-
barite deposits (1)
-
biography (1)
-
Canada
-
Arctic Archipelago (2)
-
Eastern Canada
-
Maritime Provinces
-
New Brunswick (2)
-
Nova Scotia
-
Cape Breton Island (1)
-
-
-
Newfoundland and Labrador
-
Newfoundland (2)
-
-
Ontario
-
Bruce Peninsula (1)
-
Timiskaming District Ontario (1)
-
Toronto Ontario (1)
-
-
Quebec
-
Eastern Townships (1)
-
Gaspe Peninsula (1)
-
Saint Lawrence Estuary (1)
-
-
-
Hudson Bay (1)
-
Mackenzie Mountains (1)
-
Nunavut
-
Ellesmere Island (1)
-
Sverdrup Islands
-
Amund Ringnes Island (1)
-
-
-
Queen Elizabeth Islands
-
Ellesmere Island (1)
-
Sverdrup Islands
-
Amund Ringnes Island (1)
-
-
-
Western Canada
-
Alberta
-
Athabasca Glacier (1)
-
-
British Columbia (1)
-
Canadian Rocky Mountains (2)
-
Manitoba (2)
-
Northwest Territories (4)
-
Saskatchewan (1)
-
Yukon Territory (1)
-
-
-
carbon
-
C-14 (3)
-
-
Caribbean region (1)
-
Cenozoic
-
Quaternary
-
Cordilleran ice sheet (1)
-
Holocene
-
upper Holocene (1)
-
-
Pleistocene
-
lower Pleistocene
-
Calabrian (1)
-
-
middle Pleistocene (1)
-
upper Pleistocene
-
Wisconsinan
-
upper Wisconsinan (2)
-
-
-
-
upper Quaternary (1)
-
-
Tertiary
-
Neogene
-
Miocene
-
upper Miocene
-
Messinian (1)
-
-
-
Pliocene
-
lower Pliocene
-
Zanclean (1)
-
-
-
-
Paleogene
-
Eocene
-
upper Eocene (1)
-
-
Oligocene (1)
-
-
-
Yakataga Formation (1)
-
-
Central America
-
Costa Rica
-
Nicoya Peninsula (1)
-
-
Panama (1)
-
-
Chordata
-
Vertebrata
-
Tetrapoda
-
Mammalia (1)
-
-
-
-
continental shelf (1)
-
crust (4)
-
crystal growth (1)
-
data processing (1)
-
Deep Sea Drilling Project
-
IPOD
-
Leg 84
-
DSDP Site 565 (1)
-
DSDP Site 566 (1)
-
DSDP Site 567 (1)
-
DSDP Site 568 (1)
-
DSDP Site 569 (1)
-
DSDP Site 570 (1)
-
-
-
-
deformation (19)
-
diagenesis (2)
-
earthquakes (5)
-
East Pacific Ocean Islands
-
Hawaii
-
Hawaii County Hawaii
-
Hawaii Island
-
Kilauea (1)
-
-
-
-
-
economic geology (1)
-
Europe
-
Alps (1)
-
Southern Europe
-
Italy
-
Apennines (1)
-
Molise Italy
-
Campobasso Italy (1)
-
-
Sardinia Italy (1)
-
-
-
Western Europe
-
France
-
Alpes-de-Haute Provence France
-
Digne France (1)
-
-
Corsica (1)
-
Herault France (1)
-
Provence (1)
-
-
Scandinavia
-
Norway
-
Finnmark Norway
-
Varanger Fjord (2)
-
-
Northern Norway (1)
-
-
-
United Kingdom
-
Great Britain
-
England
-
Dorset England (1)
-
-
Scotland
-
Highland region Scotland
-
Caithness Scotland (1)
-
-
Moray Firth (1)
-
-
Wales
-
South Wales (1)
-
-
-
-
-
-
faults (33)
-
folds (7)
-
foliation (2)
-
fractures (8)
-
gems (1)
-
geochemistry (3)
-
geochronology (4)
-
geodesy (1)
-
geomorphology (24)
-
glacial geology (45)
-
ichnofossils (1)
-
igneous rocks
-
plutonic rocks
-
granites (3)
-
pegmatite (1)
-
-
volcanic rocks
-
andesites (2)
-
basalts (2)
-
pyroclastics
-
tuff (1)
-
-
rhyolites (2)
-
-
-
inclusions
-
fluid inclusions (1)
-
-
Indian Ocean
-
Arabian Sea (1)
-
-
intrusions (2)
-
Invertebrata
-
Arthropoda (1)
-
-
isotopes
-
radioactive isotopes
-
Al-26 (1)
-
Be-10 (1)
-
C-14 (3)
-
-
stable isotopes
-
O-18/O-16 (1)
-
Sr-87/Sr-86 (1)
-
-
-
lava (4)
-
lineation (13)
-
mantle (1)
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Berriasian (1)
-
-
Upper Cretaceous
-
Niobrara Formation (1)
-
Pierre Shale (1)
-
-
-
Triassic
-
Upper Triassic
-
Xujiahe Formation (1)
-
-
-
-
metal ores
-
base metals (1)
-
copper ores (1)
-
lead ores (1)
-
polymetallic ores (1)
-
silver ores (1)
-
zinc ores (1)
-
-
metals
-
alkaline earth metals
-
beryllium
-
Be-10 (1)
-
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
striations
Anatomy of a 300 Myr old fjord in Namibia Open Access
Controls of Multi-Scale Fractures in Tight Sandstones: A Case Study in the Second Member of Xujiahe Formation in Xinchang Area, Western Sichuan Depression Open Access
Link between glacial striation morphology and induced drag Available to Purchase
Grooving in the midcontinent: A tectonic origin for the mysterious striations of L’Anse Bay, Michigan, USA Open Access
A power-based abrasion law for use in landscape evolution models Available to Purchase
Fault surface morphology as an indicator for earthquake nucleation potential Open Access
A CASE OF MISTAKEN IDENTITY: IS MARY ANNING (1799–1847) ACTUALLY WILLIAM BUCKLAND (1784–1856)? Available to Purchase
Structural setting and detrital zircon U–Pb geochronology of Triassic–Cenozoic strata in the eastern Central Pamir, Tajikistan Available to Purchase
Abstract Integration of new geological mapping, detrital zircon geochronology, and sedimentary and metamorphic petrography south of the Muskol metamorphic dome in the Central Pamir terrane provides new constraints on the evolution of the Pamir orogen from Triassic to Late Oligocene time. Zircon U–Pb data show that the eastern Central Pamir includes Triassic strata and mélange that are of Karakul–Mazar/Songpan–Ganzi affinity and comprise the hanging wall of a thrust sheet that may root into the Tanymas Fault c. 35 km to the north. The Triassic rocks are unconformably overlain by Cretaceous strata that bear similarities to coeval units in the southern Qiangtang terrane and the Bangong Suture Zone of central Tibet. Finally, Oligocene or younger conglomerate and interbedded siltstone, the youngest documented strata in the Pamir Plateau proper, record an episode of juvenile magmatism at c. 32 Ma, which is absent in the extant rock record and other detrital compilations from the Pamir but overlaps in age with ultrapotassic volcanic rocks in central Tibet. Zircon Hf isotopic data from the Oligocene grains ( ε Hf (t) ≈ +9.6) suggest a primary mantle contribution, consistent with the hypothesis of Late Eocene lithospheric removal beneath the Pamir Plateau.
Scratching the surface: Footprint of a late Carboniferous ice sheet Open Access
Estimation of Paleo-ice Sheet Thickness and Evolution of Landforms in Schirmacher Oasis and Adjoining Area, cDML, East Antarctica Available to Purchase
Bird’s-eye view of an Ediacaran subglacial landscape Open Access
Quaternary evolution of the Suluova Basin: implications on tectonics and palaeonvironments of the Central North Anatolian Shear Zone Available to Purchase
Active Normal Faulting along the Langshan Piedmont Fault, North China: Implications for Slip Partitioning in the Western Hetao Graben Available to Purchase
Geologic map of the east-central Meadow Valley Mountains, and implications for reconstruction of the Mormon Peak detachment, Nevada Open Access
Interactions and growth of faults in an outcrop-scale system Available to Purchase
Abstract: Fault growth could be achieved by (1) synchronous increases in displacement and length or (2) rapid fault propagation succeeded by displacement-dominated growth. The second of these growth models (here referred to as the constant length model) is rarely applied to small outcrop-scale faults, yet it can account for many of the geometric and kinematic attributes of these faults. The constant length growth model is supported here using displacement profiles, displacement–length relationships and tip geometries for a system of small strike-slip faults (lengths of 1–200 m and maximum displacements of 0.001–3 m) exposed in a coastal platform in New Zealand. Displacement profiles have variable shapes that mainly reflect varying degrees of fault interaction. Increasing average displacement gradients with increasing fault size (maximum displacement and length) may indicate that the degree of interaction increases with fault size. Horsetail and synthetic splays confined to fault-tip regions are compatible with little fault propagation during much of the growth history. Fault displacements and tip geometries are consistent with a two-stage growth process initially dominated by propagation followed by displacement accumulation on faults with near-constant lengths. Retardation of propagation may arise due to fault interactions and associated reduction of tip stresses, with the early transition from propagation-to displacement-dominated growth stages produced by fault-system saturation (i.e. the onset of interactions between all faults). The constant length growth model accounts for different fault types over a range of scales and may have wide application.
The last glaciation in Caithness, Scotland: revised till stratigraphy and ice-flow paths indicate multiple ice flow phases Available to Purchase
Brushlines in fault pseudotachylytes: A new criterion for coseismic slip direction Available to Purchase
Distributed normal faults in the Niobrara Chalk and Pierre Shale of the central Great Plains of the United States Open Access
Ice-Keel Scour Marks In the Geological Record: Evidence From Carboniferous Soft-Sediment Striated Surfaces In the Paraná Basin, Southern Brazil Available to Purchase
Geology of the Scottsville Mesozoic basin, Virginia Available to Purchase
Abstract The Scottsville Basin in the central Virginia Piedmont forms one of the westernmost Mesozoic sedimentary basins in eastern North America. This small basin has received limited scientific attention during the past 50 years; this field trip focuses on recent stratigraphic and structural research concerning the Scottsville Basin and surrounding region. The ∼110 km 2 Scottsville Basin and adjacent ∼5 km 2 Midway Mills Sub-basin formed astride the boundary between the eastern Blue Ridge and western Piedmont. The Scottsville Basin is a half-graben, bound on its northwest margin by a segmented normal fault that places Neoproterozoic to early Paleozoic metamorphic rocks in the footwall against Triassic strata in the hanging wall. Basin strata dip to the northwest toward the boundary fault, and dip angles increase from west to east. The southeastern basin boundary, previously interpreted as a small displacement normal fault, is an unconformity with phyllitic rocks of the western Piedmont. Strata within the basin include 2–3 km of boulder to pebble conglomerate, breccia, arkosic sandstone, and siltstone. Sedimentary rocks in the Scottsville Basin were sourced primarily from Proterozoic rocks in the Blue Ridge province to the west of the basin. The age of Triassic strata in the Scottsville Basin is poorly constrained. The Midway Mills Sub-basin was originally contiguous with the Scottsville Basin, but now forms an erosional outlier. A suite of north-northwest–striking Jurassic diabase dikes crosscuts Triassic sedimentary rocks and is subparallel to the dominant extensional fracture set in basin sedimentary rocks.