Results 51 to 60 of about 149 (137)

An accurate record of volcanic ash fall deposition as characterized by dispersed organic matter in a lower Permian tonstein layer (Faxinal Coalfield, Paraná Basin, Brazil)

Geologica Acta, 2013
For the first time, the dispersed organic matter in the tonstein layer interbedded with a coal seam in the Faxinal Coalfield (Sakmarian, Southern Paraná Basin, Brazil) is characterized.
M.W. SIMAS, M. GUERRA-SOMMER, J.G. MENDONÇA FILHO, M. CAZZULO-KLEPZIG, M.L.L. FORMOSO, I. DEGANI-SCHMIDT   +5 more
doaj  

Tropical Warming and Intensification of the West African Monsoon During the Miocene Climatic Optimum

Paleoceanography and Paleoclimatology, Volume 39, Issue 5, May 2024.
Abstract Studying monsoon dynamics during past warm time periods such as the Miocene Climatic Optimum (MCO; ∼16.9–14.5 Ma) could greatly aid in better projecting monsoon intensity, in the context of future greenhouse warming. However, studies on regional MCO temperature change and its effect on the monsoons during this time period are lacking. Here, we
Evi Wubben, Bianca R. Spiering, Tjerk Veenstra, Remco Bos, Zongyi Wang, Joost van Dijk, Isabella Raffi, Jakub Witkowski, Frederik J. Hilgen, Francien Peterse, Francesca Sangiorgi, Appy Sluijs   +11 more
wiley   +1 more source

The Carboniferous-Permian transition in Arunachal Pradesh, North East India: A palynological and palynofacies study

Earth History and Biodiversity
Palynological and palynofacies analyses were carried out from an outcrop of the Bichom Formation located in Arunachal Pradesh, North-East India. The age of the Bichom Formation at this locality is inferred based on palynological investigation and ...
Alok Kumar Mishra, Srikanta Murthy, Deepa Agnihotri, Vikram Partap Singh, Dieter Uhl, S.K. Pandita, Rajni Tewari, Pramod K. Singh   +7 more
doaj   +1 more source

Caracterização da Contaminação por Petróleo e seus Derivados na Baía de Guanabara: Aplicação de Técnicas Organogeoquímicas e Organopetrográficas [PDF]

Anuário do Instituto de Geociências, 2003
The Guanabara Bay is the second bigger bay of the Brazilian coast. The bay is oneof most beautiful of the world and shelters an ample and protected natural environment,preponderant factor for the development of the region.
João Graciano Mendonça Filho, Taíssa Rego Menezes, E. Adriana de Oliveira, Michele B. Iemma   +3 more
doaj  

Palynofacies and lacustrine sequence stratigraphy: a case example from the Jurassic Cañadón Asfalto Formation, Cañadón Asfalto Basin, Extra-Andean Patagonia, Argentina [PDF]

Journal of Micropalaeontology
This study presents a detailed palynofacies analysis integrated with lacustrine sequence stratigraphy to evaluate the role of climate-driven hydrological balance on basin infill and its impact on the organic matter accumulation in the Jurassic Cañadón ...
D. E. Olivera, C. Zavala, M. E. Quattrocchio, M. E. Soreda, R. Scasso, R. Yang, R. Yang   +6 more
doaj   +1 more source

Assessment of the source rock potential in the Sirka and Giddi collieries of South Karanapura coalfield, Jharkhand, India: Insights from megaflora, palynology, and geochemistry

Journal of Asian Earth Sciences: X
Permian deposits in the Indian Peninsula have long been a significant source of coal and have great potential for hydrocarbon exploration. Here we present results of megafloral, palynological, and geochemical analysis of the Late Artinskian-Kungurian ...
Sanghamitra Pradhan, Divya Mishra, Neha Aggarwal, Shreerup Goswami   +3 more
doaj   +1 more source

KEROGEN CHARACTERIZATION OF THE VACA MUERTA FORMATION (TITHONIAN–VALANGINIAN), AT MALLÍN QUEMADO AND PUERTA CURACO, NEUQUÉN BASIN, CENTRAL-WEST PATAGONIA, ARGENTINA. PALYNOFACIES AND GEOCHEMICAL APPROACH

Publicación Electrónica de la Asociación Paleontológica Argentina
This contribution integrates palynofacies, organic geochemical and sedimentological analyses to characterize the depositional environment and the kerogen properties related to the hydrocarbon source potential of the Vaca Muerta Formation at the Mallín ...
Luis Sebastián Agüero, Daniela Elizabeth Olivera, Marcelo Adrián Martínez, Germán Otharán   +3 more
doaj   +1 more source

Palynological and Geochemical study of the Dalbuing Formation of Eastern Himalaya: Implications for Palaeoredox, Palaeosalinity, Palaeoproductivity and Palaeoclimatic conditions of the depositional basin

Journal of the Palaeontological Society of India
We present here the results and interpretation of the palynological and geochemical studies of the early to middle Eocene Dalbuing Formation of Arunachal Pradesh of the Eastern Himalayan region.
BIKASH GOGOI, NIKU MONI MUDOI, PANCHANAN DEHINGIA, LIJA BORAH   +3 more
doaj   +1 more source

Fácies Orgânica da Formação La Luna, Bacia do Valle Superior del Magdalena, Colômbia:Implicações para a Geração de Petróleo e Caracterização Paleoambiental. [PDF]

Anuário do Instituto de Geociências, 2007
Upper Cretaceous pelitic rocks generate most of the oil reserves in Colombia. In Del Magdalena Upper Valley (MUV), the existenceof good quality outcrops and thermal evolution levels that vary from immaturity to the end of the oil generation “window ...
Juliana Andrade Iemini, João Graciano Mendonça Filho, Felix Thadeu Teixeira Gonçalves, Taíssa Rêgo Menezes   +3 more
doaj  

Short-Term Sea-Level Changes and Sequence Stratigraphy of the Mid-Cretaceous Kharita Formation Reservoirs in Egypt: Insights from Geochemical and Palynological Data. [PDF]

ACS Omega, 2022
Mansour A, Wagreich M, Ahmed MS, Tahoun SS, Gentzis T.   +4 more
europepmc   +1 more source