Results 31 to 40 of about 38,380 (249)

Theories, technologies and practices of lacustrine shale oil exploration and development: A case study of Paleogene Kongdian Formation in Cangdong sag, Bohai Bay Basin, China

open access: yesPetroleum Exploration and Development, 2022
As the main factors affecting stable and high production and the production regularity of lacustrine shale oil are unclear, the theoretical understandings, key exploration and development technologies, development effect and production regularity of ...
Xianzheng ZHAO   +12 more
doaj   +1 more source

Geochemical Investigations of Lacustrine Ferromanganese Concretions [PDF]

open access: yes, 1969
Title: Geochemical Investigations of Lacustrine Ferromanganese Concretions, Author: Arthur G. Troup, Location: ThodeObservations on the geological environment of formation and data concerning the mineralogy, petrography and chemistry of lacustrine ...
Troup, Arthur G.
core   +1 more source

Paleogene-Neogene ring-shaped sedimentary system and reservoir characteristics in the Western depression of the Qaidam Basin

open access: yesFrontiers in Earth Science
The Paleogene-Neogene strata in the Western Depression of the Qaidam Basin represent a primary focus for oil and gas exploration and development. Influenced by both terrigenous clastic influx and endogenic carbonate deposition, these strata exhibit ...
Guoyong Liu   +11 more
doaj   +1 more source

Pore Characteristics of Lacustrine Shale Oil Reservoir in the Cretaceous Qingshankou Formation of the Songliao Basin, NE China

open access: yesEnergies, 2020
Shale oil is hosted in nanopores of organic-rich shales, so pore characteristics are significant for shale oil accumulation. Here we analyzed pore characteristics of 39 lacustrine shale samples of the Late Cretaceous Qingshankou Formation (K2qn) in the ...
Xiaomeng Cao   +6 more
doaj   +1 more source

Climate variations in the Circum-Alpine region and their influence on Neolithic-Bronze Age lacustrine communities displacement and\or cultural adaptation

open access: yesDocumenta Praehistorica, 2009
Because of its delicate balance, the hydrological system of the Alpine region is affected immediately by climatic variations. The most obvious evidence of hydrologic instability is reflected by natural water basins in particular rivers and lakes.
Francesco Menotti
doaj   +1 more source

Petrophysics and sediment variability in a mixed alluvial to lacustrine carbonate system (Miocene, Madrid Basin, Central Spain)

open access: yesThe Depositional Record, 2022
This study evaluates variations in petrophysical properties within a mixed alluvial to lacustrine carbonate system (Miocene, Madrid Basin, Central Spain).
John J. G. Reijmer   +5 more
doaj   +1 more source

Sedimentological signatures of lacustrine tsunamis [PDF]

open access: yes, 2021
Lake tsunamis are a natural hazard with high magnitudes and low recurrence rates. Because of their infrequent occurrence in space and time, little is known about the associated hazard and the risk to the vulnerable coastal areas that are often heavily ...
Nigg, Valentin
core   +1 more source

Lacustrine biogeochemistry of the McMurdo Dry Valleys, Antarctica.

open access: yes, 2005
Lacustrine biogeochemistry of the McMurdo Dry Valleys ...
Jennifer Lynn. Lawson (7999712)
core   +4 more sources

Tooth histotype and enameloid microstructure of Priohybodus arambourgi d'Erasmo, 1960 (Elasmobranchii: Hybodontiformes) from the Late Jurassic of northeastern Brazil

open access: yesThe Anatomical Record, EarlyView.
Abstract Sharks possess varied diets and different prey capture mechanisms. As a result, the group exhibits a significant diversity in dental morphology, also reflecting the internal structures of the teeth. Internal dental anatomy points to the existence of three histotypes in elasmobranch phylogeny: orthodont, osteodont, and pseudoosteodont ...
Kelly Roberta da Silva   +2 more
wiley   +1 more source

Osteohistological evidence for terrestrial adaptation and an extended growth period in mekosuchine crocodylians and its potential role in their extinction

open access: yesThe Anatomical Record, EarlyView.
Abstract The Australasian crocodylian fossil record is dominated by the extinct endemic clade Mekosuchinae, with known members spanning the Eocene‐to‐Holocene. This diverse clade exhibited high morphological disparity, from early members superficially similar to Crocodylus, to more terrestrial forms later in the clade's evolutionary history.
Devin K. Hoffman   +9 more
wiley   +1 more source

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