Results 31 to 40 of about 15,112 (291)

From section to landscape(s): reconstructions of environmental and landscape changes for the past 8000 years around the site of Wakarida (Ethiopia) using chronostratigraphy

BSGF - Earth Sciences Bulletin, 2021
In Northern Tigray (Ethiopia), the combined presence in the valley bottoms of sedimentary fills several meters thick and of archaeological remains of human settlements (homes, camps) raises the question of the socio-environmental processes at the origin ...
Blond Ninon, Jacob-Rousseau Nicolas, Bouchaud Charlène, Callot Yann   +3 more
doaj   +1 more source

Revisiting Late Pleistocene Loess–Paleosol Sequences in the Azov Sea Region of Russia: Chronostratigraphy and Paleoenvironmental Record

Frontiers in Earth Science, 2022
Loess-paleosol sequences are the most intensively studied terrestrial archives used for the reconstruction of Late Pleistocene environmental and climatic changes in the Azov Sea region, southwest Russia. Here we present a refined chronostratigraphy and a
Jie Chen, T. Stevens, Tai-bao Yang, M. Qiang, G. Matishov, E. Konstantinov, R. Kurbanov, Biao Zeng, Pei-hong Shi   +8 more
semanticscholar   +1 more source

Organic‐walled microfossils from the Kistedalen Formation, Norway: acritarch chronostratigraphy of the Baltic Miaolingian and evolutionary trends of placoid acritarchs

Papers in Palaeontology, 2022
New acritarch data from the Kistedalen Formation based on two sections with continuous exposure enable us to establish the most detailed Miaolingian acritarch biozonation in Baltica to date.
T. Palacios, Anette E. S. Högström, S. Jensen, J. R. Ebbestad, Heda Agić, M. Høyberget, G. Meinhold, W. Taylor   +7 more
semanticscholar   +1 more source

The challenge of relating the Kasimovian to West European chronostratigraphy–a critical review of the Cantabrian and Barruelian substages of the Stephanian Stage

Geological Society Special Publication, 2022
For the west European regional chronostratigraphic framework, the Cantabrian substage was conceived as covering a widely-apparent stratigraphic gap between the top of the Westphalian and the base of Stephanian A, the lowest unit of the Stephanian.
J. A. Knight, C. Cleal, C. Álvarez-Vázquez   +2 more
semanticscholar   +1 more source

Chronostratigraphy of the Larsen blue-ice area in northern Victoria Land, East Antarctica, and its implications for paleoclimate

The Cryosphere, 2022
. In blue-ice areas (BIAs), deep ice is directly exposed at the surface, allowing for the cost-effective collection of large-sized old-ice samples. However, chronostratigraphic studies on blue-ice areas are challenging owing to fold and fault structures.
G. Lee, J. Ahn, Hyeontae Ju, F. Ritterbusch, Ikumi Oyabu, C. Buizert, Songyi Kim, Jang-il Moon, Sambit Ghosh, K. Kawamura, Zheng‐Tian Lu, S. Hong, Changhee Han, S. Hur, Wei Jiang, Guo‐Min Yang   +15 more
semanticscholar   +1 more source

First high resolution chronostratigraphy for the early North African Acheulean at Casablanca (Morocco)

Scientific Reports, 2021
The onset of the Acheulean, marked by the emergence of large cutting tools (LCTs), is considered a major technological advance in the Early Stone Age and a key turning point in human evolution.
R. Gallotti, G. Muttoni, D. Lefèvre, Jean‑philippe Degeai, D. Geraads, A. Zerboni, Valérie Andrieu‐Ponel, M. Maron, Serena Perini, Mohssine El Graoui, Séverine Sanz-Laliberté, C. Daujeard, P. Fernandes, M. Rué, Lionel Magoga, Abderrahim Mohib, J. Raynal   +16 more
semanticscholar   +1 more source

Sequence Stratigraphic Evaluation of Sediments Domicile in Day Field Located in the Onshore Central Swamp Depobelt of the Niger Delta, Nigeria

Journal of Applied Sciences and Environmental Management, 2022
This study employs the tool of sequence stratigraphy to evaluate Day Field, in the Onshore Niger Delta of Nigeria for hydrocarbon predictions using six (6) well logs displayed at standard scales to enhance log trends for lithologic and stratal package ...
T. S. Alege
doaj   +1 more source

The Late Triassic Ischigualasto Formation at Cerro Las Lajas (La Rioja, Argentina): fossil tetrapods, high-resolution chronostratigraphy, and faunal correlations

Scientific Reports, 2020
Present knowledge of Late Triassic tetrapod evolution, including the rise of dinosaurs, relies heavily on the fossil-rich continental deposits of South America, their precise depositional histories and correlations. We report on an extended succession of
J. Desojo, L. Fiorelli, M. Ezcurra, A. Martinelli, J. Ramezani, Átila A. S. Da Rosa, M. B. von Baczko, M. J. Trotteyn, F. Montefeltro, Miguel Ezpeleta, Max C. Langer   +10 more
semanticscholar   +1 more source

Pliocene and Pleistocene chronostratigraphy and paleoenvironment of the Central Arctic Ocean, using deep water agglutinated foraminifera [PDF]

, 1998
Deep-water agglutinated foraminifera (DWAF) were studied from Cores PS2177-5, PS2200-5, PS2212-3 and PS2185-6; from the R/V POLARSTERN ARK-VIII/3 Cruise in the central Arctic Ocean.
Evans, J.R., Kaminski, M.A.
core   +1 more source

Bolboforma from Leg 105, Labrador Sea and Baffin Bay, and the chronostratigraphy of Bolboforma in the North Atlantic [PDF]

, 1989
The genus Bolboforma, first described by Daniels and Spiegler (1974), is a problematic group of calcareous microfossils. Solbaforma is most probably a planktonic cyst (Rogl and Hochuli, 1976) having protozoan or algal affinities (Poag and Karowe, 1986 ...
Kaminski, M., Pallant, A.
core   +1 more source