- 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
-
North Africa
-
Egypt (1)
-
-
West Africa
-
Benin (1)
-
-
-
Asia
-
Far East
-
China
-
Altyn Tagh Fault (1)
-
Gansu China (1)
-
-
Indonesia
-
Celebes (1)
-
Moluccas (1)
-
-
Japan
-
Honshu
-
Hyogo Japan
-
Kobe Japan (1)
-
-
-
-
-
Himalayas
-
Garhwal Himalayas (1)
-
-
Indian Peninsula
-
India
-
Uttarakhand India
-
Garhwal Himalayas (1)
-
-
-
Indus Valley (1)
-
Jammu and Kashmir
-
Ladakh (1)
-
-
Pakistan (1)
-
-
Indus River (1)
-
Middle East
-
Iran (1)
-
Iraq (1)
-
Zagros (1)
-
-
Tibetan Plateau (1)
-
-
Australasia
-
New Zealand
-
Canterbury New Zealand
-
Christchurch New Zealand (1)
-
-
-
Papua (1)
-
-
Canada
-
Western Canada
-
British Columbia (1)
-
-
-
Caribbean region
-
West Indies
-
Antilles
-
Greater Antilles
-
Hispaniola
-
Haiti (1)
-
-
-
-
-
-
Europe
-
Southern Europe
-
Iberian Peninsula
-
Portugal (1)
-
-
-
-
Grand Canyon (1)
-
Indian Ocean
-
Red Sea
-
Gulf of Aqaba (1)
-
-
-
Indian Ocean Islands
-
Mascarene Islands
-
Reunion
-
Piton de la Fournaise (1)
-
-
-
-
Long Valley (1)
-
North America
-
Basin and Range Province (1)
-
Canadian Shield
-
Superior Province
-
Wabigoon Belt (1)
-
-
-
-
Owens Valley (1)
-
Pacific Ocean (1)
-
Puna (1)
-
Sinai (1)
-
South America
-
Andes
-
Central Andes (1)
-
-
Argentina (1)
-
-
South Island (1)
-
United States
-
Arizona (1)
-
California (1)
-
Colorado Plateau (1)
-
Hurricane Fault (1)
-
Oklahoma
-
Pawnee County Oklahoma (1)
-
-
Utah (1)
-
-
-
commodities
-
petroleum (1)
-
-
geochronology methods
-
Ar/Ar (1)
-
optically stimulated luminescence (1)
-
paleomagnetism (1)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Holocene (2)
-
Pleistocene
-
Bishop Tuff (1)
-
Lake Agassiz (1)
-
upper Pleistocene
-
Weichselian
-
upper Weichselian
-
Younger Dryas (1)
-
-
-
-
-
upper Quaternary (2)
-
-
Tertiary
-
Neogene
-
Miocene (1)
-
Pliocene (1)
-
-
Paleogene
-
Eocene
-
upper Eocene (1)
-
-
-
-
-
Laurentide ice sheet (1)
-
Mesozoic
-
Jurassic
-
Middle Jurassic (1)
-
-
-
MIS 5 (1)
-
Paleozoic (1)
-
-
igneous rocks
-
igneous rocks
-
volcanic rocks (2)
-
-
ophiolite (1)
-
-
metamorphic rocks
-
ophiolite (1)
-
-
Primary terms
-
absolute age (1)
-
Africa
-
North Africa
-
Egypt (1)
-
-
West Africa
-
Benin (1)
-
-
-
Asia
-
Far East
-
China
-
Altyn Tagh Fault (1)
-
Gansu China (1)
-
-
Indonesia
-
Celebes (1)
-
Moluccas (1)
-
-
Japan
-
Honshu
-
Hyogo Japan
-
Kobe Japan (1)
-
-
-
-
-
Himalayas
-
Garhwal Himalayas (1)
-
-
Indian Peninsula
-
India
-
Uttarakhand India
-
Garhwal Himalayas (1)
-
-
-
Indus Valley (1)
-
Jammu and Kashmir
-
Ladakh (1)
-
-
Pakistan (1)
-
-
Indus River (1)
-
Middle East
-
Iran (1)
-
Iraq (1)
-
Zagros (1)
-
-
Tibetan Plateau (1)
-
-
Australasia
-
New Zealand
-
Canterbury New Zealand
-
Christchurch New Zealand (1)
-
-
-
Papua (1)
-
-
Canada
-
Western Canada
-
British Columbia (1)
-
-
-
Caribbean region
-
West Indies
-
Antilles
-
Greater Antilles
-
Hispaniola
-
Haiti (1)
-
-
-
-
-
-
Cenozoic
-
Quaternary
-
Holocene (2)
-
Pleistocene
-
Bishop Tuff (1)
-
Lake Agassiz (1)
-
upper Pleistocene
-
Weichselian
-
upper Weichselian
-
Younger Dryas (1)
-
-
-
-
-
upper Quaternary (2)
-
-
Tertiary
-
Neogene
-
Miocene (1)
-
Pliocene (1)
-
-
Paleogene
-
Eocene
-
upper Eocene (1)
-
-
-
-
-
climate change (2)
-
dams (1)
-
data processing (3)
-
deformation (2)
-
Earth (1)
-
earthquakes (6)
-
Europe
-
Southern Europe
-
Iberian Peninsula
-
Portugal (1)
-
-
-
-
faults (9)
-
folds (1)
-
geochemistry (1)
-
geodesy (1)
-
geomorphology (8)
-
geophysical methods (3)
-
glacial geology (1)
-
government agencies (1)
-
ground water (2)
-
hydrogeology (1)
-
igneous rocks
-
volcanic rocks (2)
-
-
Indian Ocean
-
Red Sea
-
Gulf of Aqaba (1)
-
-
-
Indian Ocean Islands
-
Mascarene Islands
-
Reunion
-
Piton de la Fournaise (1)
-
-
-
-
intrusions (2)
-
lava (1)
-
lineation (1)
-
Mesozoic
-
Jurassic
-
Middle Jurassic (1)
-
-
-
North America
-
Basin and Range Province (1)
-
Canadian Shield
-
Superior Province
-
Wabigoon Belt (1)
-
-
-
-
orogeny (2)
-
Pacific Ocean (1)
-
paleoclimatology (1)
-
paleomagnetism (1)
-
Paleozoic (1)
-
petroleum (1)
-
plate tectonics (2)
-
remote sensing (10)
-
sedimentary structures
-
planar bedding structures
-
varves (1)
-
-
-
sediments
-
clastic sediments
-
alluvium (1)
-
-
peat (1)
-
-
seismology (1)
-
shorelines (1)
-
soils (2)
-
South America
-
Andes
-
Central Andes (1)
-
-
Argentina (1)
-
-
structural analysis (1)
-
tectonics
-
neotectonics (3)
-
-
United States
-
Arizona (1)
-
California (1)
-
Colorado Plateau (1)
-
Hurricane Fault (1)
-
Oklahoma
-
Pawnee County Oklahoma (1)
-
-
Utah (1)
-
-
volcanology (1)
-
-
sedimentary rocks
-
volcaniclastics (1)
-
-
sedimentary structures
-
sedimentary structures
-
planar bedding structures
-
varves (1)
-
-
-
-
sediments
-
sediments
-
clastic sediments
-
alluvium (1)
-
-
peat (1)
-
-
volcaniclastics (1)
-
-
soils
-
soils (2)
-
SRTM
New Insights into Interpretation of Aeromagnetic Data for Distribution of Igneous Rocks in Central Iran
Semiautomatic Algorithm to Map Tectonic Faults and Measure Scarp Height from Topography Applied to the Volcanic Tablelands and the Hurricane Fault, Western US
A new glacial varve chronology along the southern Laurentide Ice Sheet that spans the Younger Dryas–Holocene boundary
Segmentation and termination of the surface rupture zone produced by the 1932 Ms 7.6 Changma earthquake: New insights into the slip partitioning of the eastern Altyn Tagh fault system
Extending the terrestrial depositional record of marine geohazards in coastal NW British Columbia
Abstract Recurrent storms, floods, landslides, earthquakes and tsunamis challenge the development of resilient infrastructure and communities in coastal northwestern British Columbia. Vulnerability assessment first requires extended and improved understanding of geohazards in the Pacific Basin to constrain modelling of future events. An investigation of soils and bedrock structures in the Douglas Channel provides insight into the distribution of deposits attributed to geohazards in the region. Newly discovered marine inundation deposits corroborate numerical models and suggest that Pacific-sourced storms and earthquake-triggered tsunamis expend much of their energy in the outer coast and rarely reach far up the mainland fjords. Small-volume Folisolic slides and rockfalls do not generate tsunamis of any consequence. In contrast, marine sediments deposited beyond storm berms at the fjord head are a record of local tsunamis generated by large-volume marine slumps. Deep-fractured bedrock mapped upslope from relict submarine features would trigger damaging tsunami waves if rapid failure into the fjord were to occur. The observations above suggest only great earthquakes, large landslides and seasonal storms above a certain threshold volume and impulse energy produce geomorphically significant inundation events. However, even small submarine landslides have tsunamigenic potential in Douglas Channel since they occur in shallow water.
Abstract The metamorphic basement units of the Upper Ouémé watershed in Benin have been investigated to identify the structural controls on aquifer properties, groundwater flow and water balance at large scale. Spatial analysis of borehole and hydrogeophysical data suggests that large-scale weathering profiles, aquifer transmissivity and storage properties are better correlated to a palaeo-weathering surface. Multi-model analysis, combined with assessment of nine transient numerical groundwater models against observations, suggests the best conceptualizations are those where hydraulic conductivity and specific yield are distributed within a weathered zone determined through interpolation of weathered zone thickness. When compared to previous studies, the general groundwater balance of simulated models suggests the groundwater system contributes, on average, 49.8 m 3 s −1 to the river flow (mostly during the rainy season). The same volumetric flow would be lost to groundwater evapo-transpiration and deep/lateral drainage of the catchment. Borehole abstraction (about 7.5 m 3 s −1 ) represents only 6% of the average groundwater recharge and 1% of the average rainfall. This suggests that despite relatively low borehole productivity, the basement aquifer system still has an important unused potential for rural to mid-scale water supply and that, at present, the main external drivers for groundwater resource sustainability are changes in climate and land use.
Fault activity, tectonic segmentation, and deformation pattern of the western Himalaya on Ma timescales inferred from landscape morphology
Developing a Geologically Based V S 30 Site‐Condition Model for Portugal: Methodology and Assessment of the Performance of Proxies
Alluvial and fluvial fans on Saturn’s moon Titan reveal processes, materials and regional geology
Abstract Fans, landforms that record the storage and transport of sediment from uplands to depositional basins, are found on Saturn’s moon Titan, a body of significantly different process rates and material compositions from Earth. Images obtained by the Cassini spacecraft’s synthetic aperture radar reveal morphologies, roughness, textural patterns and other properties consistent with fan analogues on Earth also viewed by synthetic aperture radar. The observed fan characteristics on Titan reveal some regions of high relative relief and others with gentle slopes over hundreds of kilometres, exposing topographic variations and influences on fan formation. There is evidence for a range of particle sizes across proximal to distal fan regions, from c. 2 cm or more to fine-grained, which can provide details on sedimentary processes. Some features are best described as alluvial fans, which implies their proximity to high-relief source areas, while others are more likely to be fluvial fans, drawing from larger catchment areas and frequently characterized by more prolonged runoff events. The presence of fans corroborates the vast liquid storage capacity of the atmosphere and the resultant episodic behaviour. Fans join the growing list of landforms on Titan derived from atmospheric and fluvial processes similar to those on Earth, strengthening comparisons between these two planetary bodies.
Formation and breaching of two palaeolakes around Leh, Indus valley, during the late Quaternary
Abstract Of the several types of Quaternary deposits formed by glacial, alluvial and mass-wasting processes, with vast climatic and tectonic significance lake deposits stand out prominently in the Indus valley around the town of Leh. We studied a number of palaeolake deposits between the Zinchan–Indus confluence and Shey village and carried out optically stimulated luminescence (OSL) quartz dating of samples from critical sections. Our results indicate that, during the late Quaternary, the Indus River was dammed at least twice in the narrow gorge downstream of Spituk Gompa, forming a reservoir up to 35 km long in which 20–68 m thick sediments were deposited under fluvial and lacustrine environments. During the older phase, the Indus was blocked by debris of moraines/landslides in the narrow zone near the Zinchan–Indus confluence. The resulting lake existed between c. 125 ± 11 and 87 ± 8 ka during marine isotopic stage (MIS) 5. No evidence of damming material is preserved. Present-day elevations of lake deposits suggest a possible extension of the lake up to Ranbirpura upstream. After the lake breach, the Indus River was again dammed near Phey village by the advancing alluvial fan of the Phyang River. This lake, extending up to Karu, formed at c. 79 ± ka. The lake existed in this phase during c. 72–49 ka, during cold-stage MIS-4. The lake was breached after c. 46 ± 3 ka, however.
Surface Deformation of North‐Central Oklahoma Related to the 2016 M w 5.8 Pawnee Earthquake from SAR Interferometry Time Series
Construction and degradation of a broad volcanic massif: The Vicuña Pampa volcanic complex, southern Central Andes, NW Argentina
Abstract Eastern Indonesia is the site of intense deformation related to convergence between Australia, Eurasia, the Pacific and the Philippine Sea Plate. Our analysis of the tectonic geomorphology, drainage patterns, exhumed faults and historical seismicity in this region has highlighted faults that have been active during the Quaternary (Pleistocene to present day), even if instrumental records suggest that some are presently inactive. Of the 27 largely onshore fault systems studied, 11 showed evidence of a maximal tectonic rate and a further five showed evidence of rapid tectonic activity. Three faults indicating a slow to minimal tectonic rate nonetheless showed indications of Quaternary activity and may simply have long interseismic periods. Although most studied fault systems are highly segmented, many are linked by narrow (<3 km) step-overs to form one or more long, quasi-continuous segment capable of producing M > 7.5 earthquakes. Sinistral shear across the soft-linked Yapen and Tarera–Aiduna faults and their continuation into the transpressive Seram fold–thrust belt represents perhaps the most active belt of deformation and hence the greatest seismic hazard in the region. However, the Palu–Koro Fault, which is long, straight and capable of generating super-shear ruptures, is considered to represent the greatest seismic risk of all the faults evaluated in this region in view of important strike-slip strands that appear to traverse the thick Quaternary basin-fill below Palu city.
An estimation of regional geologic structures from the geomorphology to characterize the Wadi systems, southeast Sinai, Egypt
Simulating the thermorheological evolution of channel-contained lava: FLOWGO and its implementation in EXCEL
Abstract FLOWGO is a one-dimensional model that tracks the thermorheological evolution of lava flowing down a channel. The model does not spread the lava but, instead, follows a control volume as it descends a line of steepest descent centred on the channel axis. The model basis is the Jeffreys equation for Newtonian flow, modified for a Bingham fluid, and a series of heat loss equations. Adjustable relationships are used to calculate cooling, crystallization and down-channel increases in viscosity and yield strength, as well as the resultant decrease in velocity. Here we provide a guide that allows FLOWGO to be set up in Excel. In doing so, we show how the model can be executed using a slope profile derived from Google™ Earth. Model simplicity and ease of source-term input from Google™ Earth means that this exercise allows (i) easy access to the model, (ii) quick, global application and (iii) use in a teaching role. Output is tested using measurements made for the 2010 eruption of Piton de la Fournaise (La Réunion Island). The model is also set up for rapid syneruptive hazard assessment at Piton de la Fournaise, as we show using the example of the response to the June 2014 eruption.