Palynostratigraphy, palynofacies and depositional environment of a lignite-bearing succession at Surkha Mine, Cambay Basin, north-western India
 
More details
Hide details
1
Birbal Sahni Institute of Palaeobotany, 53, University Road, Lucknow 226007, India
2
Department of Botany, S. S. J. Campus, Almora, India
Online publication date: 2015-12-12
Publication date: 2015-12-12
 
Acta Palaeobotanica 2015; 55(2): 183–207
 
ABSTRACT
The paper reports palynology and palynofacies studies of lignite-bearing sediments exposed in an opencast mine succession at Surkha, Bhavnagar District, in the coastal region of Gujarat, India. The study examined the relationships between the palynoflora, sedimentary organic matter and environment at the time of deposition of lignite and associated sediments. Based on dinoflagellate cyst biostratigraphy, the sedimentary succession is dated as early Eocene (Ypresian). Palynofacies studies helped reveal the palaeoenvironmental fluctuations. The dominance of angiosperm pollen grains, freshwater algae, microthyraceous fungi and a large share of land debris in the lower part of the succession suggests a freshwater swamp environment of deposition for the basal lignite facies. Two cenozones – Matanomadiasulcites maximus and Lakiapollis ovatus – were identified in the lower lignite facies, determined from the dominance of these pollen grains in the palynological assemblages. The presence of angiosperm pollen grains and pteridophyte spores in the carbonaceous shale horizon above the lignite facies indicates a change in the depositional regime from freshwater swamp to lagoonal. This was identified as the Arecipites wodehousei cenozone due to its numerical abundance in the assemblage. Dinoflagellate cyst abundance and diversity, and microforaminiferal test linings along with well-sorted terrestrial debris in the mudstone in the upper part of the succession suggest a more open marine estuarine type of depositional environment. The Homotryblium complex along with Cordospheridium fibrospinosum, Kenleyia sp., and Thalassiphora pelagica dinoflagellate cysts are the main representatives of this zone, determined as the Homotryblium tenuispinosum cenozone. The changing depositional settings (freshwater swamp–lagoonal–estuarine) along the vertical succession indicate a marine transgression in this region. Results from palynological studies of early Palaeogene successions of the Cambay and Kutch basins correlate well with the present findings.
 
CITATIONS (10):
1.
Middle and Lower Eocene Coals, Cambay Basin and Miocene Coals, South Sumatra Basin: Analogs for Coal and CBM Properties.
Sandip Roy
Day 1 Tue, April 09, 2019
 
2.
Botryococcus from the early Eocene lignite mines of western India: inferences on morphology, taphonomy and palaeoenvironment
Madhav Kumar, Priyanka Monga, Anumeha Shukla, R.C. Mehrotra
Palynology
 
3.
Neogene fungal record from IODP Site U1433, South China Sea: Implications for paleoenvironmental change and the onset of the Mekong River
Y.F. Miao, S. Warny, C. Liu, P.D. Clift, M. Gregory
Marine Geology
 
4.
Characterization of Panandhro Lignite Deposits (Kachchh Basin), western India: Results from the Bulk Geochemical and Palynofloral Compositions
R. Mathews, B. Singh, Hukam Singh, V. Singh, Alpana Singh
Journal of the Geological Society of India
 
5.
Neogene fungal record from IODP Site U1433, South China Sea: Implications for paleoenvironmental change and the onset of the Mekong River
Y.F. Miao, S. Warny, C. Liu, P.D. Clift, M. Gregory
Marine Geology
 
6.
Character evolution of modern fly‐speck fungi and implications for interpreting thyriothecial fossils
Renard Le, André Firmino, Olinto Pereira, Ruth Stockey, Mary Berbee
American Journal of Botany
 
7.
Late Miocene-Pleistocene evolution of India-Eurasia convergence partitioning between the Bhutan Himalaya and the Shillong Plateau: New evidences from foreland basin deposits along the Dungsam Chu section, eastern Bhutan
Isabelle Coutand, Laurie Barrier, Gwladys Govin, Djordje Grujic, Carina Hoorn, Guillaume Dupont-Nivet, Yani Najman
Tectonics
 
8.
Catalogue of Selected Angiosperm Pollen Grains from Palaeogene and Neogene Sediments of India
Surya Tripathi
 
9.
Diverse epiphyllous fungi on Cunninghamia leaves from the Oligocene of South China and their paleoecological and paleoclimatic implications
Natalia Maslova, Aleksandra Sokolova, Тatiana Kodrul, Anna Tobias, Natalia Bazhenova, Xin‐Kai Wu, Jian‐Hua Jin
Journal of Systematics and Evolution
 
10.
Assembly and division of the South and South-East Asian flora in relation to tectonics and climate change
Robert Morley
Journal of Tropical Ecology
 
eISSN:2082-0259
ISSN:0001-6594