Essays about: "palaeoenvironment"

Showing result 6 - 10 of 11 essays containing the word palaeoenvironment.

1. 6. Investigation into the Loess-Palaeosol and Red Clay Record from the Pliocene- Quaternary Chinese Loess Plateau Using In-Phase and Out-OfPhase Magnetic Susceptibility

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Rebecca Jacobson; [2018]
   Keywords : loess; Chinese Loess Plateau; magnetic susceptibility; out-of-phase; viscous relaxation; lössjord; Kinesiska Lössjordsplatån; magnetiska känsligheter; ur-fas; viskös relaxation;

   Abstract : Loess is a well sorted, fine grained, windblown (aeolian) sediment and deposits as a blanket over large areas, reaching from a few centimetres to several hundreds of meters in height and can drape large landscapes in form of mountains. During a more humid and warmer climate, redox conditions are changed in the loess deposits, with greater seasonal moisture creating greater soil formation (pedogenesis), i. READ MORE

3. 7. Palaeoenvironments of the Earliest (Middle Devonian) Tetrapod Trackways from the Holy Cross Mountains, Poland; Locomotion in a Terrestrial Setting?

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Martin Qvarnström; [2015]
   Keywords : Tetrapods; palaeoenvironment; trackways; paleosols; microfacies; trace fossils; fin-limb transition; Holy Cross Mountains.;

   Abstract : The palaeoenvironment from which early tetrapods emerged is crucial to comprehend in order to understand the mechanisms that drove and allowed the terrestrialization of vertebrates; one of the most important evolutionary ‘events’ in the history of animals. Nevertheless, much of the terrestrialization is shrouded in obscurity, inter alia, due to scarcity of early tetrapods in the fossil record. READ MORE

4. 8. Palynology of Oligocene to middle Miocene sediments from ODP leg 159, site 959 offshore Ivory Coast, equatorial West Africa

   University essay from Lunds universitet/Geologiska institutionen

   Author : Elin Hult; [2009]
   Keywords : Palynomorphs; Oligocene; Miocene; ODP leg 159 site 959; Ivory Coast; palaeoenvironment; climate; Palynomorfer; Oligocen; Miocen; Elfenbenskusten; palaeomiljö; klimat; Earth and Environmental Sciences;

   Abstract : Oligocen och Miocen karaktäriseras av flera klimatoscillationer som följer de primära Milankovitchcyklerna men varierar i magnitud. Dinoflagellater är känsliga miljöindikatorer såväl som biostratigrafimarkörer, men deras användning som det föregående har i huvudsak varit begränsat till högre latituder. READ MORE

5. 9. An Early Jurassic conifer-dominated assemblage of the Clarence-Moreton Basin, eastern Australia

   University essay from Lunds universitet/Geologiska institutionen

   Author : Ida-Maria Jansson; [2006]
   Keywords : Australia; Jurassic; Marburg Subgroup; conifers; palaeoenvironment; Australien; Jura; barrträd; palaeomiljö; Earth and Environmental Sciences;

   Abstract : During the early Mesozoic two mass-extinction events profoundly reshaped the world’s biota. The first of these took place at the end of the Triassic and affected both marine organisms and terrestrial floras. The second occurred as an oceanic anoxic event during the early Toarcian. READ MORE

6. 10. Litostratigrafiska studier av en platåformad sand- och grusavlagring i Skuremåla, Blekinge

   University essay from Lunds universitet/Geologiska institutionen

   Author : Fredrik Stenfeldt; [2006]
   Keywords : Skuremåla; litostratigrafi; deglaciation; randfält; strandförskjutning; Baltiska Issjön; Blekinge; lithostratigraphy; subaqueous fan; shoreline displacement; Baltic Ice Lake; Earth and Environmental Sciences;

   Abstract : I Skuremåla, Blekinge har litostratigrafiska studier utförts av en platåformad grus- och sandavlagring. Skuremåla-avlagringen har tidigare beskrivits som ett delta med en överyta på 55 m ö h. Syftet med arbetet är att tolka vad för sorts ”delta” Skuremåla-avlagringen utgör samt depositionsmiljön för sedimenten i fråga. READ MORE