نتایج جستجو برای: lacustrine environment

تعداد نتایج: 519568  

Journal: :Journal of Glaciology 1953

2017
Michelle R Bartsch Lynn A Bartsch William B Richardson Jon M Vallazza Brenda Moraska Lafrancois

Increased nutrient and sediment loading in rivers have caused observable changes in algal community composition, and thereby, altered the quality and quantity of food resources available to native freshwater mussels. Our objective was to characterize the relationship between nutrient conditions and mussel food quality and examine the effects on fatty acid composition, growth and survival of juv...

2005
Lawrence H. Tanner Spencer G. Lucas

The Moenave Formation was deposited during latest Triassic to earliest Jurassic time in a mosaic of fluvial, lacustrine, and eolian subenvironments. Ephemeral streams that flowed north-northwest (relative to modern geographic position) deposited singleand multi-storeyed trough cross-bedded sands on an open floodplain. Sheet flow deposited mainly silt across broad interchannel flats. Perennial l...

2007
K. A. Selby A. G. Brown

Three cores from two connected lakes in Central Ireland (Lough Kinale and Derragh Lough) were investigated using diatom analysis to establish the Holocene development of the lacustrine system, any local variations within the lakes and any anthropogenic influences. The study area was situated in a lowland location and the lakes were shallow, unstratified and interconnected. Litho-and bio-stratig...

Journal: :Frontiers in Earth Science 2023

Reconstructing the Late Pleistocene sedimentary environment history of Houtao Plain has great significance not only for revealing evolution Yellow River but also identifying formation paleolake and northern Ulan Buh Desert. This paper presents results facies framework based on a grain-size multi-parameter analysis optically stimulated luminescence 14 C dating drilling core DKZ06 with length 20....

2016
Antonia G. P. Ford Lukas Rüber Jason Newton Kanchon K. Dasmahapatra John D. Balarin Kristoffer Bruun Julia J. Day

Ecomorphological differentiation is a key feature of adaptive radiations, with a general trend for specialization and niche expansion following divergence. Ecological opportunity afforded by invasion of a new habitat is thought to act as an ecological release, facilitating divergence, and speciation. Here, we investigate trophic adaptive morphology and ecology of an endemic clade of oreochromin...

Journal: :International Journal of Earth Sciences 2021

Lake Chalco lies south of the Basin Mexico and has been subject studies related to Late Quaternary climate variability. In 2016, International Continental Scientific Drilling Program “MexiDrill Project” recovered a 520-m sediment record from Chalco. Magnetic susceptibility measurements revealed substantial changes in physical properties between 343 285 m depth, suggesting composition associated...

Journal: :Geologica Acta 2022

The Paleogene Liushagang Formation is part of the Fushan Sag, a continental lacustrine basin located at theSoutheastern margin Beibuwan Basin, South China Sea. Further understanding deep-water gravityflow deposits in this formation will be conducive to lithologic reservoir exploration sag. In study,three members Formation, SQEls3 SQEls2 and SQEls1, from old young, are used withcore observation,...

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