Results 21 to 30 of about 2,089 (196)

Sequence analysis, cyclostratigraphy and palynofacies of early Anisian carbonate ramp deposits, NW Bulgaria [PDF]

Annales Societatis Geologorum Poloniae, 2020
A sequence- and cyclostratigraphic interpretation of early Anisian (Aegean) shallow-marine carbonate ramp deposits, exposed in outcrop sections west of Tserovo village, NW Bulgaria, is presented. The hierarchical pattern identified can be interpreted in terms of Milankovitch cyclicity with elementary sequences representing the precession (20-kyr) cycle,
Götz, Annette E., Ajdanlijsky, George, Strasser, André   +2 more
openaire   +1 more source

Palynostratigraphy and palynofacies of the early Eocene Gurha lignite mine, Rajasthan, India [PDF]

, 2016
A 105 m early Eocene section exposed in the Gurha mine in the Nagaur-Ganganagar Basin, Rajasthan, India, archiving remains of equatorial vegetation at a time of extreme global warmth and close to the onset of the India-Eurasia collision, is investigated ...
Aggarwal, Anumeha Shukla, Batten, Biswas, Clausing, Dayal, Eberle, Frederiksen, Germeraad, Grice, Harley, Hart, Kar, Kar, Kar, Kar, Knights, Kumar, Kumar, Kumar, Lal, Madhav Kumar, Martin, Masron, Molnar, Morley, Muller, Norton, Pocock, Priyanka Monga, R.C. Mehrotra, Raju, Rao, Rao, Rao, Rawat, Robert A. Spicer, Roy, Sah, Shukla, Teresa E.V. Spicer, Thanikaimoni, Traverse, Tripathi, Tyson, Van Geel, Wang, Zachos, Zachos, Zarzen, Zarzen   +50 more
core   +1 more source

Palaeoenvironmental study and sequence stratigraphy of Sanghaneh Formation in Qalehjegh section (North of Bojnord) using organic matter contents of the rock unit [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2015
  Introduction   Kopeh-Dagh basin is located northeast of Iran and in this basin the sedimentary beds began from middle Jurassic. The Sanghaneh Formation is one of the lower Cretaceous rock units in sections.
Hossein Kazemi, Ebrahim Ghasemi-Nejad
doaj   +2 more sources

Palynofacies analysis – principles and application for paleoenvironmental studies: implications from Bulgaria

Review of the Bulgarian Geological Society, 2021
The use of palynofacies analysis has been steadily increasing during the last decades. This stems from both commercial interests (i.e., hydrocarbon exploration) and academic research of past environments and studies of the global climate changes that took place during the Phanerozoic.
openaire   +1 more source

Palaeoecological and possible evolutionary effects of early Namurian (Serpukhovian, Carboniferous) glacioeustatic cyclicity [PDF]

, 2008
Early Namurian (Serpukhovian, Carboniferous), sedimentary cycles in the Throckley and Rowlands Gill boreholes, near Newcastle upon Tyne, UK, consist of fossiliferous limestones overlain by (usually unfossiliferous) black mudstone, followed by sandstones ...
Leng, Melanie, Millward, David, Stephenson, Michael, Vane, Christopher   +3 more
core   +1 more source

A quantitative comparison of dispersed spore/pollen and plant megafossil assemblages from a Middle Jurassic plant bed from Yorkshire, UK [PDF]

, 2015
Detailed quantitative data has previously been collected from plant megafossil assemblages from a Middle Jurassic (Aalenian) plant bed from Hasty Bank, North Yorkshire, UK.
Bhowmik, Boulter, Chaloner, Chaloner, Charles H. Wellman, Couper, Cox, Crane, Dettmann, Filatoff, Gedl, Gray, Hammer, Hammer, Hancock, Harris, Harris, Harris, Harris, Harris, Harris, Harris, Harris, Harris, Hemingway, Hill, Hill, Hubbard, Klavins, Legendre, Levin, Lindley, Nami, Norstog, Parry, Picket, Sam M. Slater, Scheihing, Schweitzer, Traverse, van Konijnenburg-van Cittert, van Konijnenburg-van Cittert, van Konijnenburg-van Cittert, van Konijnenburg-van Cittert, van Konijnenburg-van Cittert, Wilson, Ziaja   +46 more
core   +3 more sources

Reconstructions of deltaic environments from Holocene palynological records in the Volga delta, northern Caspian Sea [PDF]

, 2014
This article was made available through open access by the Brunel Open Access Publishing Fund.New palynological and ostracod data are presented from the Holocene Volga delta, obtained from short cores and surface samples collected in the Damchik region ...
Abdullayev NR, Abreu V, Baganz OW, Baltes N, Belevich EF, Belevich EF, Belevich EF, Bohacs KM, Bolikhovskaya NS, Bolikhovskaya NS, Bowman AP, Bowman AP, Corradini D, Ferronsky VI, Kaplin P, Kroonenberg SB, Labutina IA, Lewis J, Lychagin MY, Mayev EG, Müller K, Nikolayev VA, Reynolds AD, Reynolds AD, Rochon A, Rusakov GV, Spidchenko AN, van Geel B   +27 more
core   +2 more sources

Palynofacies analysis of Ida-4 well, Niger Delta Basin, Nigeria

Geology, Geophysics & Environment, 2019
Palynofacies analyses of the strata penetrated by Ida-4 wells were carried out with the aim of studying the stratigraphic sequence penetrated by the well in order to establish palynostratigraphic zones, relative age and the paleoenvironment of deposition. Fifty ditch cutting samples within the interval of 2179–3523 m were analyzed.
Jacinta Nkiru Chukwuma-Orji, Edward Agboneni Okosun, Funmilayo Daramola Gana   +2 more
openaire   +2 more sources

Changes in Cave Sedimentation Mechanisms During the Late Quaternary: An Example From the Lower Cerovačka Cave, Croatia

Frontiers in Earth Science, 2021
During archeological excavations in the Lower Cerovačka Cave (Mt. Velebit, Croatia), the test trench penetrated to a depth of 1.8 m. An undisturbed sequence of sediments was exposed. Considering that caves represent highly efficient sediment traps it was
Tomislav Kurečić, Neven Bočić, Lara Wacha, Koraljka Bakrač, Anita Grizelj, Dinko Tresić Pavičić, Christopher Lüthgens, Andreja Sironić, Siniša Radović, Loris Redovniković, Markus Fiebig   +10 more
doaj   +1 more source

The Assessment of Organic Matter Young's Modulus Distribution With Depositional Environment and Maturity

Journal of Geophysical Research: Solid Earth, Volume 125, Issue 12, December 2020., 2020
Abstract Quantification of risk to seal integrity in CCS, or gas extraction from hydraulic fracturing, is directly affected by the accessibility of organic pores within organic rich mudrocks. Knowledge of the host organic matter's mechanical properties, which are influenced by depositional environment and thermal maturity, are required to reduce ...
T. D. Fender, C. Van Der Land, M. Rouainia, S. P. Graham, D. M. Jones, C. H. Vane, T. Wagner   +6 more
wiley   +1 more source