Results 101 to 110 of about 3,445 (238)

New evidence for the Hirnantian (Upper Ordovician) in Belgium? An integrated isotopical, biostratigraphic and sedimentologic approach

Carnets de Géologie, 2005
The Hirnantian is an important time in Earth history as it includes one of the major episodes of continental glaciation and marine mass extinction (e.g. Brenchley et alii, 1994).
Grassineau Nathalie, Préat Alain, Yans Johan, Vanmeirhaeghe Jan, Verniers Jacques   +4 more
doaj  

Palaeoglaciations in the Polar and Subpolar Ural Mountains

Boreas, EarlyView.
The Ural Mountains form a major physiographic boundary between the East European Plain and West Siberia, both repeatedly glaciated during the Pleistocene by the Barents–Kara ice sheet. Although the present‐day topography reflects significant glacial modification, the extent, chronology and interaction of mountain glaciers with the Barents–Kara ice ...
Bartosz Kurjanski, Matteo Spagnolo, Irina Bushueva, Iestyn Barr, Brice R. Rea, Olga Solomina, Stanislav Kutuzov   +6 more
wiley   +1 more source

Sedimentary logs and facies characterization dataset of Tembeling group from the vicinity area of Kuala Tahan, Pahang, Malaysia. [PDF]

Data Brief, 2023
Khor WC, Mohamed KR, Leman MS, Ali CA.
europepmc   +1 more source

Comparative histological analysis of vertebrates reveals Triassic climate variability across southern Pangea

Journal of Anatomy, EarlyView.
Bone tissues of Triassic taxa reveal life history signals consistent with climatic variation across southern Pangea, spanning present‐day Brazil, Argentina, Zimbabwe, and India. Slower growth patterns within the Zimbabwean assemblage suggest a comparatively more arid intracontinental environment than those closer to the coast. Artwork by Andrey Atuchin.
Valerie Trinidad, Darlington Munyikwa, Michel Zondo, Timothy J. Broderick, Sterling J. Nesbitt, Stephen Tolan, Christopher Griffin   +6 more
wiley   +1 more source

Source of Eolian Facies using Geomorphological and Sedimen Tological Methods (Case Study: Ab-Barik Watershed of Bam in Kerman)

علوم آب و خاک, 2017
The Ab-Barik watershed in Bam is a part of Lut desert basin. It is like all other desert areas which has erosion problems caused by wind erosion, sand and soil storms. The result of these sand storms appears as continuous and isolated sand hills. In this
F. Heidari, K. Shirani, R. saboohi
doaj  

The Unexpected Discovery of Paleocene? Coals in Outcrops Thought to Be Cambrian, Al Huqf, Oman

Journal of Petroleum Geology, EarlyView.
ABSTRACT Two brown organic deposits were encountered whilst investigating kaolinitic claystones thought to occur at the base of a Cambrian formation at outcrop. The age of these organic deposits is probably Paleocene from palynology. Organic petrography shows that they are subbituminous coals with some oil source potential.
Mohammed H. Al Kindi, Alan P. Heward, Lorraine B. Eglinton, Steve R. Packer, Darrin T. Stead   +4 more
wiley   +1 more source

Confirmation of the impact origin of the Late Ordovician Tvären impact structure (southeast Sweden) and emplacement of impactites in a marine setting

Meteoritics &Planetary Science, EarlyView.
Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska, Sanna Alwmark, Mikael Calner, Sylvain Richoz, Jens Ormö, Erik Sturkell, Carl Alwmark   +6 more
wiley   +1 more source

Sedimentology of plastics: state of the art and future directions. [PDF]

Philos Trans A Math Phys Eng Sci
Hampson G, Russell C, Kane IA, Clare M, Jackson M, Gabbott S.   +5 more
europepmc   +1 more source

A review of the supercritical state of eruption‐fed volcanic density currents in subaerial and subaqueous settings

Sedimentology, EarlyView.
ABSTRACT Subaerial Pyroclastic Density Currents (PDCs) and Subaqueous Eruption‐Fed Density Currents (SEFDCs) produced during volcanic eruptions can present major hazards to surrounding communities and ecosystems. The bedforms deposited by these volcanic density currents can provide insights into the nature of transport and depositional processes, which
Shannon E. Frey, Martin Jutzeler, Rebecca J. Carey   +2 more
wiley   +1 more source

Quaternary tufas of the western Potiguar Basin, Brazil: rapid xeromorphic adaptation and climate change inferred from sedimentology, paleobotany, and fossil diagenesis. [PDF]

Naturwissenschaften
Aureliano T, Correa L, Ghilardi AM, Erthal M, B Dantas T, C Pontes CC, Lima ML, Maia R, Rusinelli BB, Santiago F, Lima-Filho FP, Ricardi-Branco FS, Bezerra FHR.   +12 more
europepmc   +1 more source