Results 151 to 160 of about 3,019,172 (413)

The missing woodland story: Implications of 1700 years of stand‐scale change on ‘naturalness’ and managing remnant broadleaved woodlands

People and Nature, EarlyView.
Abstract Longer‐term perspectives—equivalent to the lifespans of long‐lived trees—are required to fully inform perceptions of ‘naturalness’ used in woodland conservation and management. Stand‐scale dynamics of an old growth temperate woodland are reconstructed using palaeoecological data.
Annabel Everard, J. Edward Schofield, Tim Mighall, Scott Timpany, Gill Plunkett   +4 more
wiley   +1 more source

Biomineralization of primary carbonate cements: a new biosignature in the fossil record from the Anisian of Southern Italy

Lethaia, EarlyView., 2021
Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido, Matteo Sposato, Giuseppe Palladino, Alessandro Vescogni, Domenico Miriello   +4 more
wiley   +1 more source

Reconstruction of eolian bed forms and paleocurrents from cross-bedded strata at Victoria Crater, Meridiani Planum, Mars [PDF]

, 2011
Outcrop exposures imaged by the Opportunity rover at Victoria Crater, a 750 m diameter crater in Meridiani Planum, are used to delineate sedimentary structures and further develop a dune-interdune depositional model for the region.
Edgar, L. A., Grotzinger, J. P., Hayes, A. G., Sohl-Dickstein, J., Squyres, S. W., Watters, W. A.   +5 more
core   +1 more source

Active Layer Warming and Thickening on CALM‐S JGM, James Ross Island, in the Period 2013/14–2022/23

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The Circumpolar Active Layer Monitoring‐South (CALM‐S) site was established near the Johann Gregor Mendel (JGM) research station on James Ross Island in February 2014. The CALM‐S JGM grid, measuring 80 × 70 m, encompasses two distinct lithological units: a Holocene marine terrace (covering approximately 75% of the grid) and Cretaceous ...
Filip Hrbáček, Michaela Kňažková, Kamil Láska, Lucia Kaplan Pastíriková   +3 more
wiley   +1 more source

Environmental Conditions in the Late Pleistocene at the Southern Margin of the European Periglacial Domain (Hungary) Inferred From Quartz Grain Microtextures

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The paper investigates environmental conditions prevailing at the southern margin of the European periglacial domain in NW Hungary (Kemeneshát area) during the Late Pleistocene. Samples of sediments infilling sand wedges and their host sediments were analyzed by examining the grain‐size distributions, as well as the morphology and ...
Beáta Farkas, Barbara Woronko, János Kovács, Szabolcs Ákos Fábián   +3 more
wiley   +1 more source

Facies architecture and sequence stratigraphy of Kungurian Amb Formation, western Salt Range, Pakistan

Kuwait Journal of Science
The Amb Formation of the Permian age is exposed in the Salt Range in the upper Indus basin of Pakistan. This rock unit is mainly composed of sandstone and shale in which three facies (named AF1, AF2, AF3) and five microfacies were distinguished based on ...
Khawaja Umair Majeed, Syed Kamran Ali, Syed Umair Ali, Muhammad Haris, Raja Qauid Ahmad, Basit Ali Khan, Atif Jamil, Nusrat Nazir   +7 more
doaj   +1 more source

Using Optically Stimulated Luminescence to Unravel Sedimentary Processes of the Usumacinta and Grijalva Rivers (SE Mexico) [PDF]

, 2012
This report provides an optically stimulated luminescence (OSL) chronology for sediment collected through terrace deposits of the Usumacinta and Grijalva rivers in SE Mexico.
Kinnaird, T.K., Munoz-Salinas, E., Sanderson, D.   +2 more
core  

Ambient Seismic Noise and Microseismicity Monitoring of Periglacial Bodies: A Case Study on the Gran Sometta Rock Glacier (NW Italian Alps)

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Ambient seismic noise and microseismicity analyses are increasingly applied for the monitoring of landslides and natural hazards. These methodologies can offer a valuable monitoring tool also for glacial and periglacial bodies, to understand the internal processes driven by external modifications in air temperature and rainfall/snowfall ...
Chiara Colombero, Lorena Di Toro, Farbod Khosro Anjom, Alberto Godio, Umberto Morra Di Cella   +4 more
wiley   +1 more source

Development characteristics of the third-order sequence of Upper Devonian–Lower Carboniferous shore-mixed shelf in Tarim Basin, NW China

Petroleum Exploration and Development, 2019
Based on the study of stratigraphic sedimentary facies of the prototype sedimentary basin formed in the Late Devonian to Permian Period in the Tarim Basin, the prototype sedimentary basin are divided into five order sequences according to the theory of ...
Qing MA, Tao MA, Haijun YANG, Xueqin ZHAO, Yiqing ZHU   +4 more
doaj  

Ocorrência de Ironstones no Devoniano da Bacia do Paraná

Brazilian Journal of Geology
Resumo: A origem de ironstones oolíticos, preservados no registro sedimentar, tem sido assunto de muitos debates nas últimas décadas. Tais depósitos formam importantes unidades no registro paleozoico e a determinação de seu significado sedimentológico e ...
Leonardo Costa de Oliveira, Egberto Pereira   +1 more
doaj   +1 more source