Results 81 to 90 of about 10,069 (268)

Columnanidus calitzdorpensis ichnogen. ichnosp. nov: A new Middle Pleistocene subterranean termite trace fossil from South Africa

Journal of Quaternary Science, EarlyView.
ABSTRACT Termites are landscape geo‐engineers whose nesting activities substantially modify the physical and chemical properties of soils. Fossilised termite nests commonly constitute the only identifiable evidence of ancient termite activity and represent valuable trace fossil archives for reconstructing past environments.
Miengah Abrahams, Robert A. Muir, Jorge F. Genise, John E. Almond, Gcinamahlubi Hadebe, John C. Hellstrom, Rabia Jacobs, Chris Harris   +7 more
wiley   +1 more source

Paleoecological analysis of the vertebrate fauna of the Morrison Formation (Upper Jurassic), Rocky Mountain region, U.S.A.

, 2003
paleoecology; vertebrate fauna; Morrison Formation; Upper Jurassic; Rocky Mountain ...
John R. Foster
core  

A review of British Upper Jurassic ichthyosaurs [PDF]

, 1983
PhD ThesisThe introduction to the thesis presents a synopsis of British Jurassic stratigraphy, and a brief account of the occurrence of British Upper Jurassic ichthyosaur remains which highlights the importance of the Leeds Collection of ichthyosaurs.
Kirton, Angela M.
core  

A new monofenestratan pterosaur from the Kimmeridge Clay Formation (Upper Jurassic, Kimmeridgian) of Dorset, England [PDF]

, 2013
A specimen of slender skulled monofenestratan pterosaur from the Upper Jurassic Kimmeridge Clay Formation of Dorset, UK, is referred to the new genus and species Cuspicephalus scarfi.
Martill, D.M., Martill, David, Etches, S., Etches, Steve   +3 more
core   +1 more source

Petrochemical features of upper jurassic deposits in Southeastern Caucasus (Azerbaijan)

Известия высших учебных заведений: Геология и разведка
Background. This paper presents the results of complex lithological studies of the Upper Jurassic sediments in the southeastern part of Azerbaijan, the Greater Caucasus area. Aim. Determination of the formation characteristics of Upper Jurassic carbonate-
Z. N. Mehdiyeva
doaj   +1 more source

Decoupling glacier retreat and surface stabilization on the Snežnik Plateau (Slovenia), insights from in situ cosmogenic 36Cl exposure and depth‐profile ages

Journal of Quaternary Science, EarlyView.
ABSTRACT Glaciokarst landscapes pose distinctive challenges for cosmogenic dating because meltwater and runoff can be rapidly rerouted into ponors and conduit networks, weakening glacier–river coupling and promoting local sediment storage. We reconstruct glacier retreat and postglacial stabilization on the Snežnik Plateau (SW Slovenia) using in situ ...
Onur Altınay, Mehmet Akif Sarıkaya, Uroš Stepišnik, Manja Žebre, Cengiz Yıldırım, Attila Çiner, Klaus M. Wilcken   +6 more
wiley   +1 more source

An unexpected early-diverging iguanodontian dinosaur (Ornithischia, Ornithopoda) from the Upper Jurassic of Portugal

Iguanodontia is a diverse clade of herbivorous ornithischian dinosaurs that were speciose and abundant during the Jurassic and Cretaceous. Although the monophyly of Iguanodontia is well supported, their internal relationships have sparked heated debate ...
Sequero López, Cristina, Rotatori, Filippo Maria, Mateus, Octávio, Camilo, Bruno, Ferrari, Lucrezia, Moreno Azanza, M.   +5 more
core   +1 more source

The heat flow, thermal history of the oil source Lower Jurassic Togurskaya suite and oil-and-gas potential of the Paleozoic of the Koltogor mezodepression(southern segment of the Koltogor-Urengoy paleorift)

Геофизический журнал, 2019
Input of the pre-Jurassic («Paleozoic») oil is important to the reproduction of the in-situ resources base of Western Siberian oil and gas extraction.
G. A. Lobova, T. E. Luneva, V. I. Isaev, A. N. Fomin, Ju. V. Korzhov, M. F. Galieva, D. S. Krutenko   +6 more
doaj   +1 more source

Upper Jurassic Fossils from Ellsworth Land, West Antarctica, and notes on upper Jurassic Biogeography of the South Pacific Region [PDF]

New Zealand Journal of Geology and Geophysics, 1967
Abstract Fossils from Lyon Nunataks (74° 52′ S, 74° 02′ W) are described: Conodicoelites spp., Rotularia sp. indet., indet. pectinacean: cf.
openaire   +1 more source

How the Physical and Chemical Properties Affect the Heavy Metal Content in Surface Water in Different Types of Peatlands

Land Degradation &Development, EarlyView.
ABSTRACT Only ~3% of the global land surface is covered by peatlands, yet more than one‐third of global soil carbon is stored in these ecosystems and contaminant filtration can be provided. The extent to which peat humification (Fibric–Hemic–Sapric) is linked to dissolved heavy metals in peatland surface waters has remained poorly quantified at a ...
Stanisław Łyszczarz, Norbert Szymański, Michał Jasik, Wojciech Piaszczyk, Andrzej Szlachta, Mirosław Żelazny, Ewa Błońska, Jarosław Lasota, Stanisław Małek   +8 more
wiley   +1 more source