<i>Botryococcus</i>from the early Eocene lignite mines of western India: inferences on morphology, taphonomy and palaeoenvironment

Kumar, Madhav; Monga, Priyanka; Shukla, Anumeha; Mehrotra, R. C.

doi:10.1080/01916122.2016.1259667

Cited by 19 publications

(6 citation statements)

References 46 publications

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“…Botryococcus colonies of the planktonic green algal genus are well-known as fossils, extending back to the Precambrian (Batten & Grenfell 1996). Botryococcus is most often found in freshwater bogs, temporary ponds, pools, and lakes, however, considerable abundances are known to occur in variable saline/brackish water supporting its cosmopolitan habitat (Batten & Grenfell 1996; Senousy et al 2004; Kumar et al 2017 and references therein).…”

Section: Resultsmentioning

confidence: 99%

Non-pollen palynomorph and palynofacies assemblages from the Lower Cretaceous of Iraq: A glimpse into palaeobiology and palaeoenvironment

2023

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Section: Resultsmentioning

confidence: 99%

Non-pollen palynomorph and palynofacies assemblages from the Lower Cretaceous of Iraq: A glimpse into palaeobiology and palaeoenvironment

2023

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“…The fossilized alga colonies appear irregularly spherical to oval in shape, which are 3-8 μm in diameter and are open with wavy outer edges. The colony-free and chemically resistant cell walls form a pore-like structure resulting in high specific surface [13].…”

Section: Results and Discussion 31 Formation Properties Characterimentioning

confidence: 99%

Investigation of Organic Matter Content of Hungarian Oil Shale and Its Influence on Sorption of 2,4-Dichlorophenol

Rauch

Földényi

2019

Period. Polytech. Chem. Eng.

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It is not only Total Organic Carbon content (TOC) but also the type of Organic Matter (OM) that the sorption of organic pollutants by soils or other natural absorbents is correlated with. Therefore, the characterization of organic components in the adsorbents is very important to elucidate sorption mechanisms. Oil shale samples were collected in Pula, Hungary. The TOC content of the investigated samples was approximately 6.8-40.1 m/m %. The characterization of the organic matter in samples was carried out by using Scanning Electron Microscopy (SEM), elemental analysis, thermal analysis, and GC-MS technics. The results predominantly indicated the presence of a low degree of the branching of aliphatic chain components in the samples. The Humic Substances (HS) content of the samples was only 1-6 m/m %, which could be determined after the treatment of oil shale with hydrogen peroxide. The influence of the amount and type of organic material in oil shale samples was studied on the adsorption of 2,4-dichlorophenol (2,4-DCP) as a model contaminant. For this aim a series of batch equilibration experiments was carried out. The results show that the total organic carbon content of samples is a strong indicator of 2,4-DCP adsorption, while the HS content is an important feature controlling sorption capacity.The study suggests that the special organic matter (kerogen) content of the oil shale plays a major role in its high adsorption capacity and in the nonlinearity of the isotherms. The HS covering the surface could decrease the sorption capacities despite the fact that though the amount of this organic material is quite low.

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“…(Pteridaceae), grow widely along the habitats situated near deltaic coasts (Tryon & Tryon, 1982;Medina et al, 1990;Garcia Massini et al, 2006). Representation of colonial alga Botryococcus braunii in the palynoassemblage is very significant for proving the existence of fresh or brackish water habitats as the alga flourishes well in freshwater or low saline estuarine lakes (Guy-Ohlson, 1992;Kumar et al, 2017). Occurrence of dinoflagellate cysts, viz.…”

Section: Palynofloral Age Considerationmentioning

confidence: 99%

“…Occurrence of such fresh water inhabiting ferns may also suggest transportation of detritus through fluvial sources towards the pro-deltaic inner shelf zone of the shallow marine coast. Representation of the colonial alga Botryococcus braunii in the assemblage of both palynozones indicates prevalence of well-oxygenated estuarine lakes near the inner shelf coastal zone where input of the fluvial water was high, but transportation of sediments was very low (Guy-Ohlson, 1992;Lindström & Erlström, 2011;Kumar et al, 2017). The alga mostly occurs in freshwater lacustrine, fluvial, lagoonal and deltaic in a wide range of temperatures and habitats (Traverse, 1955;Batten & Grenfell, 1996;Clausing, 1999).…”

Section: Depositional Environmentmentioning

confidence: 99%

Palynostratigraphic, palaeoenvironmental and palaeogeographic significance of the Early Cretaceous palynoflora of Kachchh Basin, western India

Kumar¹

2022

JPS

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Sediments of Bhuj Formation (Early Cretaceous) occur in the Kachchh Basin, western India containing abundant and diverse plant fossils. Sedimentary successions of the formation exposed along Pur River comprise variably thickened shale, carbonaceous shale, thin coal seam, siliceous clays, etc. and have yielded abundant megaspores, microspores, conifer pollen grains, dinoflagellate cysts and colonies of Botryococcus alga. Two palynozones are recognized in the recorded palynoassemblage, viz. Minerisporites cutchensis megaspore zone at the basal part, derived mostly from herbaceous vegetation growing along pro–deltaic swampy habitat. The succeeding Araucariacites australis zone in the upper part of the succession probably derived from conifer–dominated forest inhabited along the freshwater swamps, flourishing in a more humid and warm temperate climate. The palynofloras of both palynozones are biostratigraphically very significant indicating Late Aptian–Early Albian age of the succession. A majority of the palynotaxa recorded from the studied sedimentary succession show resemblance with the contemporaneous deposits of other Gondwana continents of the Southern Hemisphere.

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Botryococcusfrom the early Eocene lignite mines of western India: inferences on morphology, taphonomy and palaeoenvironment

Cited by 19 publications

References 46 publications

Non-pollen palynomorph and palynofacies assemblages from the Lower Cretaceous of Iraq: A glimpse into palaeobiology and palaeoenvironment

Non-pollen palynomorph and palynofacies assemblages from the Lower Cretaceous of Iraq: A glimpse into palaeobiology and palaeoenvironment

Investigation of Organic Matter Content of Hungarian Oil Shale and Its Influence on Sorption of 2,4-Dichlorophenol

Palynostratigraphic, palaeoenvironmental and palaeogeographic significance of the Early Cretaceous palynoflora of Kachchh Basin, western India

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