Results 51 to 60 of about 3,403 (222)

Smithian–Spathian carbonate geochemistry in the northern Thaynes Group influenced by multiple styles of diagenesis

The Depositional Record, Volume 11, Issue 2, Page 616-636, April 2025.
While the Smithian–Spathian boundary carbon isotopic excursion has been traditionally interpreted as capturing global carbon cycle behaviour, recent studies have suggested that at least some Early Triassic carbon isotopic excursions may incorporate influences from authigenic or early diagenetic processes.
Jordan P. Todes, Franziska R. Blattmann, Torsten Vennemann, Elke Schneebeli‐Hermann, Hugo Bucher, Dan P. Razionale, Clara L. Blättler   +6 more
wiley   +1 more source

Palynostratigraphy and Palaeoenvironmental Interpretation of AA-1 Well, 4329-5892 Feet, Niger Delta Basin, Nigeria

European Journal of Environment and Earth Sciences, 2022
Twenty ditch cutting samples composited and prepared at 80 ft from interval 4329 to 5892 ft of AA-1 Well in the Niger Delta Basin, Nigeria was studied and analyzed through the use of palynoflora assemblage of important diagnostic palynomorphs as well as ...
Tejumade A. Owoeye
semanticscholar   +1 more source

The Silent VOICE—Searching for Geochemical Markers to Track the Impact of Late Jurassic Rift Tectonics

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 10, October 2024.
Abstract A causal mechanism for the Volgian Isotopic Carbon Excursion (VOICE) remains enigmatic. Elemental geochemical profiles of the Deer Bay Formation, Sverdrup Basin, Arctic Canada that record the VOICE and contemporaneous strata are herein examined to provide insight into depositional environments during Late Jurassic‐Early Cretaceous time. Silver
Jennifer M. Galloway, Thomas Hadlari, Keith Dewing, Terence Poulton, Stephen E. Grasby, Lutz Reinhardt, Mikhail Rogov, Jack Longman, Madeleine Vickers   +8 more
wiley   +1 more source

Nueva información palinológica sobre la Formación Poti (Viseano superior) en el arroyo Roncador, Cuenca Parnaíba, noreste de Brasil [PDF]

, 2014
Se presenta el resultado del análisis palinológico de seis muestras de superficie de la Formación Poti expuesta en el arroyo Roncador (Jerumenha, Piauí), noreste de Brasil.
Di Pasquo Lartigue, Maria, Iannuzzi, R.
core   +1 more source

Devonian palynological assemblages from the San Antonio x-1 Borehole, Tarija Basin, northwestern Argentina [PDF]

, 2011
The palynological analysis of the 2548-3628 m interval of the San Antonio x-1 Borehole in northwestern Argentina is presented. The illustrated palynoflora is composed of 96 species represented by diverse palynological groups such as trilete spores and ...
Di Pasquo, M. M., Noetinger, S.
core   +4 more sources

Summer temperatures from the Middle Pleistocene site Schöningen 13 II, northern Germany, determined from subfossil chironomid assemblages

Boreas, Volume 53, Issue 4, Page 525-542, October 2024.
The manuscript presents the first subfossil chironomid record from the 300 000‐year‐old Reinsdorf sequence of the well‐known archaeological site Schöningen 13 II. We tested two geographically diverse recent chironomid–temperature calibration datasets for German lowland lake sediments and reconstructed summer air temperatures based on subfossil ...
Sonja Rigterink, Kim J. Krahn, Bartosz Kotrys, Brigitte Urban, Oliver Heiri, Falko Turner, Andre Pannes, Antje Schwalb   +7 more
wiley   +1 more source

Middle–Upper Jurassic palynology of the South Sallum well, North Western Desert, Egypt

Egyptian Journal of Petroleum, 2018
Palynological analyses have been carried out on some samples of Middle–Upper Jurassic from the South Sallum well, North Western Desert, Egypt. A refinement of the original chronostratigraphy has been suggested and the stages of Bathonian – Callovian and ...
Tarek F. Mostafa, Maher I. El Soughier, Walid A. Makled   +2 more
doaj   +1 more source

Biomarker Reconstruction of a High‐Latitude Late Paleocene to Early Eocene Coal Swamp Environment Across the PETM and ETM‐2 (Ellesmere Island, Arctic Canada)

Paleoceanography and Paleoclimatology, Volume 39, Issue 2, February 2024.
Abstract The Paleocene‐Eocene Thermal Maximum (PETM) and early Eocene hyperthermal events were characterized by a Hothouse climate state. Our understanding of the climatic impact of these hyperthermals is currently biased toward marine settings and the mid‐latitudes.
Martin Blumenberg, B. David A. Naafs, Andreas Lückge, Vittoria Lauretano, Enno Schefuß, Jennifer M. Galloway, Georg Scheeder, Lutz Reinhardt   +7 more
wiley   +1 more source

Palynostratigraphy, Paleoenvironments and Kerogen Evaluation of the Campanian-Maastrichtian Enugu Shale, Anambra Basin, Nigeria

Fountain Journal of Natural and Applied Sciences (FUJNAS), 2020
Palynological and palynofacies analyses were used to investigate the paleoenvironments and hydrocarbon potential of the Campanian-Maastrichtian Enugu Shale, Anambra Basin, Nigeria.
M. A. Olayiwola, E. U. Durugbo, O. T. Fajemila   +2 more
doaj   +3 more sources

Climato-chronostratigraphic framework of Pleistocene terrestrial and marine deposits of Northern Eurasia, based on pollen, electron spin resonance, and infrared optically stimulated luminescence analyses [PDF]

Estonian Journal of Earth Sciences, 2010
Marine and terrestrial records spanning the Brunhes Chron (0–780 000 years) were synthesized using data from palaeoshelf, glacial, periglacial, and extraglacial zones of Northern Eurasia.
Molodkov, Anatoly, Bolikhovskaya, Nataliya   +1 more
doaj