Results 71 to 80 of about 21,910 (245)

Sedimentary microfacies and environment of Paleogene carbonate-rich shale in Dongying Sag, Bohai Bay Basin

open access: yesShiyou shiyan dizhi
The identification, classification, and integration of microfacies characteristics of carbonate-rich shale in the Dongying Sag of the Bohai Bay Basin are fundamental for understanding the sedimentary origin and spatial structure of related sediments ...
Weiqing WANG   +4 more
doaj   +1 more source

Seismic Sequence Stratigraphy Applied to Reservoir Recognition and Evolution on Marine Carbonatic Ramp—Macaé Group (Albian to Cenomanian) of Campos Basin

open access: yesGeological Journal, EarlyView.
A classic oil producing interval of the Campos Basin—Macaé Group is revisited through seismic stratigraphic analysis, providing a stratigraphic framework, characteristic depositional and relative time positioning for several complex structural settings.
Renata Alvarenga   +12 more
wiley   +1 more source

Book Review ~ Handbook of Online Learning Innovations in Higher Education and Corporate Training. Editors: Kjell Erik Rudestam and Judith Schoenholtz-Read

open access: yesInternational Review of Research in Open and Distributed Learning, 2003
If you take this volume at face value, based on the title, you will likely wonder, as I did, how the combination of “online learning,” “innovation in higher education,” and “corporate training” could coherently co-exist within a “handbook.” However, the ...
Reviewed by Douglas Shale
doaj  

Geochemistry and Geochronology of Magmatic Rocks in Southwestern and Northeastern Cambodia: Implications for the Tectonic Evolution and Metallogenesis of the Loei Fold Belt

open access: yesGeological Journal, EarlyView.
The composition of intrusive rocks suggests that the magma was likely generated in a subduction‐related setting. The arc crustal thickness in the Phnom Sro Ngam and Halo Prospects was probably < 40 km during emplacement. Zircon U–Pb age range indicates a correlation with Loei Fold Belt magmatic activity.
Sirisokha Seang   +6 more
wiley   +1 more source

Effectiveness of integrated shrub management and restoration techniques for rehabilitating shrub‐encroached rangelands of South Africa

open access: yesGrassland Research, EarlyView.
Herbaceous plant recovery following shrub clearing and reseeding in the rangelands of Peddie, Eastern Cape of South Africa. CTL, control; CO, cutting only; CR, cutting and reseeding; UPO, uprooting only; UPR, uprooting and reseeding. Abstract Background Shrub encroachment (SE) drives rangeland degradation, threatening biodiversity and forage ...
Monelisi Makanya   +3 more
wiley   +1 more source

Research on shale dynamic and static elastic modulus and anisotropy based on pressurization history

open access: yesFrontiers in Earth Science
The dynamic and static elastic parameters of rocks exhibit differences. It is of great practical significance to carry out experiments on dynamic and static elastic parameters of rocks under reservoir conditions and determine the conversion relationship ...
Di Zhang   +13 more
doaj   +1 more source

Shale is here again [PDF]

open access: yesOccupational Medicine, 2014
Abstract In Shale is here again Anthony Seaton briefly explores his research project with the US Department of Energy to study the risks of shale oil production and mining.
openaire   +2 more sources

The relationship between cellular protein content and selenium accumulation in freshwater microalgae

open access: yesIntegrated Environmental Assessment and Management, EarlyView.
Abstract Variability in the bioconcentration of selenium (Se) by primary producers at the base of the food web results in uncertainty in predictions of bioaccumulation and ecological risk to higher trophic level organisms. Water chemistry, speciation of Se, and periphyton community composition have all been suggested as factors that contribute to ...
Courtney Bogstie   +3 more
wiley   +1 more source

Deglaciation of the Burren glacio‐karst, western Ireland, during Termination 1: Implications for North Atlantic climate and karstification

open access: yesJournal of Quaternary Science, EarlyView.
Abstract The Burren uplands in western Ireland form one of the most extensive and best‐preserved examples of glacio‐karst in Europe. Subsumed by the Irish ice sheet during the Late Pleistocene, granite erratic boulders and in situ silica veins in the limestone bedrock provide a rare opportunity to reconstruct the timing and rate of deglaciation ...
Gordon Bromley   +4 more
wiley   +1 more source

Thermal evolution trend of aromatic hydrocarbons in shales from Permian Dalong Formation in Sichuan Basin and its significance in thermal maturity

open access: yesShiyou shiyan dizhi
The Paleozoic marine shales in southern China hold great significance for hydrocarbon exploration. However, the lack of organic matter (vitrinite) derived from higher plants in marine sediments leads to considerable uncertainties in maturity assessment ...
Cunyang ZHANG   +8 more
doaj   +1 more source

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