Results 71 to 80 of about 9,033 (210)
The Cretaceous and Palaeogene floras of western Greenland that were initially described as part of the classical work “Flora fossilis arctica” by Oswald Heer in the 19th century are currently under revision.
Grímsson Friđgeir +3 more
doaj +1 more source
Early Carboniferous (Early Viséan – Serpukhovian) Palynomorphs
Abstract. Well preserved assemblages of Early Carboniferous miospores have been recovered from a number of wells including A1–NC92, A1–37, A1 A–84, B1–2, G1–82, B1–14 and J1–81A. In some cases the palynomorph assemblages are quantitatively sparse and frequently show evidence of reworking of Late Devonian forms.
Clayton, G., Loboziak, S.
openaire +2 more sources
Climate adaptation and functional constraints drive pollen evolution in Apiales
Summary Pollen grains exhibit remarkable morphological diversity, shaped by selective pressures from environmental factors and mechanical constraints. Here, we investigate macroevolutionary patterns of pollen morphology in Apiales, an order of angiosperms with significant ecological and geographical diversity, to disentangle the roles of climate and ...
Jakub Baczyński +3 more
wiley +1 more source
Ceramic micropalaeontology: the analysis of microfossils in ancient ceramics [PDF]
Microfossils can be a common component of ancient ceramic artefacts. Their analysis in this unusual context is a little-known, yet promising cross-disciplinary application of micropalaeontology.
Day, Peter, Quinn, Patrick
core +1 more source
This study characterises carbonate mineral precipitation mechanisms and their paleoenvironmental implications in a semi‐arid, saline playa lake system. SEM image with EDS spectra shows microcrystalline, spherical shaped dolomite crystals from Laguna Fuente de Piedra composed of nanocrystals with bacterial voids and EPS.
Zeina Naim +5 more
wiley +1 more source
In the Dornes syncline, southern Central Iberian Zone, Portugal, the uppermost levels of the Serra do Luação Formation up to now have been considered to be of Pridoli-Lochkovian?
Gourvennec Rémy +5 more
doaj
Dredging up Mawson: implications for the geology of coastal East Antarctica. [PDF]
During the 1911–1914 Australasian Antarctic Expedition samples of bottom sediment were dredged from a wide sweep of coastline extending from the main base at Commonwealth Bay, to the western edge of the Shackleton Ice Shelf. An earlier study showed these
Truswell, EM
core +2 more sources
Late Holocene palaeohydrological changes in the lower Narmada Basin, India, revealed using multiproxy analyses of the Orsang River terrace sediments. Distinct depositional phases corresponding to global climatic events were recorded. High‐magnitude floods in the Narmada River during the MWP, and within the tributary Orsang River during DACP and LIA ...
Alpa Sridhar +9 more
wiley +1 more source
Aiming to investigate the deposition of pollen grains and spores in Guanabara Bay, Rio de Janeiro State, 61 surface sediment samples were analyzed. The results showed that the current deposition of palynomorphs in surface sediments of Guanabara Bay ...
Cintia F. Barreto +3 more
doaj
High-resolultion reconstruction of Lena River discharge during the Late Holocene inferred from microalgae assemblages [PDF]
On the basis of a detailed study of the diatom and aquatic palynomorph assemblages and a detailed radiocarbon chronology of sediment cores obtained from the south-eastern inner Laptev Sea shelf adjacent to the Lena Delta the spatial and temporal ...
Bauch, Henning +4 more
core

