Results 71 to 80 of about 220,818 (349)

Inherited Depositional Topography Control on Shelf-Margin Oversteepening, Readjustment, and Coarse-Grained Sediment Delivery to Deep Water, Magallanes Basin, Chile

open access: yesFrontiers in Earth Science, 2020
A shelf-margin depositional system is the stratigraphic product of terrigenous sediment delivery to the ocean, comprising a flat to low-gradient shelf, or topset, which transitions to a steeper deep-water slope, and, ultimately, a relatively flat basin ...
Dustin B. Bauer   +4 more
doaj   +1 more source

Dynamic fluvial systems and gravel progradation in the Himalayan foreland [PDF]

open access: yes, 2000
Although the large-scale stratigraphy of many terrestrial foreland basins is punctuated by major episodes of gravel progradation, the relationships of such facies to hinterland tectonism and climate change are often unclear. Structural reentrants provide
Brozovic, Nicholas, Burbank, Douglas W.
core   +1 more source

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

open access: yesDeep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza   +3 more
wiley   +1 more source

Estratigrafía de Sr y evolución sedimentaria de los depósitos marinos del Mioceno temprano en el antepaís del norte de la Cuenca Austral (o Magallanes), Argentina [PDF]

open access: yes, 2015
Early Miocene shallow marine deposits in the region of Lago Posadas-Meseta Belgrano (Argentina) represent part of the “Patagoniense” transgression, an Atlantic marine incursion that flooded large part of Patagonia, including the Austral (foreland) Basin (
Alonso Muruaga, Pablo Joaquin   +3 more
core   +1 more source

Damping Modification Factors for Pile–Induced Filtering Effect

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Period–dependent Damping Modification Factors are usually applied to the 5%–damped pseudo–acceleration response spectrum at free field conditions to derive the seismic demand for structures with damping ratio other than 5%. Likewise, the response spectrum at the foundation level of pile–supported structures may differ from the free field ...
Emmanouil Rovithis   +3 more
wiley   +1 more source

Fantosmium, a New Genus of Onthophilinae From Mid‐Cretaceous Kachin Amber (Coleoptera: Histeridae)

open access: yesEcology and Evolution
We describe and illustrate Fantosmium qizhihaoi gen. et sp. nov., a new histerid beetle from mid‐Cretaceous Kachin amber, and evaluate its phylogenetic position based on morphological characters.
Yan‐Da Li   +2 more
doaj   +1 more source

Using Optically Stimulated Luminescence to Unravel Sedimentary Processes of the Usumacinta and Grijalva Rivers (SE Mexico) [PDF]

open access: yes, 2012
This report provides an optically stimulated luminescence (OSL) chronology for sediment collected through terrace deposits of the Usumacinta and Grijalva rivers in SE Mexico.
Kinnaird, T.K.   +2 more
core  

Organic Geochemical Characterization and Exploration Prospects of Hydrocarbon Source Rocks in Nepal

open access: yesEnergy Science &Engineering, EarlyView.
It provides a more detailed introduction to the current situation of oil and gas exploration in Nepal, as well as the properties and distribution characteristics of source rocks. ABSTRACT This study aims to evaluate the hydrocarbon generation potential and exploration prospects of hydrocarbon source rocks in the Dailekh to Dang–Tansen area of Nepal ...
Guoqiang Zhang   +4 more
wiley   +1 more source

Intercalibration of Boreal and Tethyan timescales: the magneto-biostratigraphy of the Middle Triassic and the latest Early Triassic from Spitsbergen, Arctic Norway [PDF]

open access: yes, 2008
An integrated bio-magnetostratigraphic study of the latest Early Triassic to the upper parts of the Middle Triassic, at Milne Edwardsfjellet in central Spitsbergen, Svalbard, allows a detailed correlation of Boreal and Tethyan biostratigraphies.
Hounslow, Mark W.   +6 more
core   +1 more source

Smart Solutions for Sustainable Access and Technological Equity: The Effect of Energy Transition, Artificial Intelligence, and Digital Economy on Energy Poverty

open access: yesGeological Journal, EarlyView.
ABSTRACT The integration of energy transition, artificial intelligence, and the digital economy represents a significant shift in the global effort to combat energy poverty and offers innovative tools and approaches to increase energy access, efficiency, and affordability for underserved populations. This study examines the impact of energy transition,
Abdulmuttalip Pilatin   +4 more
wiley   +1 more source

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