Results 81 to 90 of about 17,548 (256)
Journal of Quaternary Science, EarlyView.ABSTRACT Marine fossil records hold outstanding importance for ecological, evolutionary and biogeographical studies. Santa Maria Island in the Azores Archipelago (central Atlantic) features a remarkable marine fossil record spanning from the Pliocene to recent times.
Sérgio P. Ávila +16 more
wiley +1 more source
Stratigraphy and chronology of a 15ka sequence of multi-sourced silicic tephras in a montane peat bog, eastern North Island, New Zealand. [PDF]
, 1999 We document the stratigraphy, composition, and chronology of a succession of 16 distal, silicic tephra layers interbedded with lateglacial and Holocene peats and muds up to c. 15 000 radiocarbon years (c.
Lowe, David J. +2 more
core +2 more sources
Land Degradation &Development, EarlyView.ABSTRACT Permafrost is rapidly degrading in the sporadic zone, including palsa mires in Scandinavia. Peatlands in the area have likely accumulated heavy metals from atmospheric deposition of industrial contaminants in the wider region. As the palsa mire chemical composition is not well known, and in other permafrost regions the permafrost thaw may ...
Joanna Katarzyna Jóźwik +7 more
wiley +1 more source
The term mud volcano is applied to a variety of landforms having in common a formation by extrusion of mud from beneath the ground. Although mud is the principal solid material that issues from a mud volcano, there are many examples where clasts up to ...
Komar, Paul D.
core +1 more source
Rover Exploration of Acidalia Mensa and Acidalia Planitia: Probing Mud Volcanoes to Sample Buried Sediments and Search for Ancient and Extant Life [PDF]
, 2012 Here we develop a plan to explore mud volcanoes near Acidalia Mensa with an MSL-class rover and propose a traverse based on geologic ...
Allen, C. C. +2 more
core +1 more source
A review of late Quaternary silicic and some other tephra formations from New Zealand: their stratigraphy, nomenclature, distribution, volume, and age. [PDF]
, 1990 The stratigraphic relationships and distribution of 36 named late Quaternary (≤c. 50 000 yr B P.) silicic tephra formations, erupted from 4 volcanic centres—Okataina, Taupo, Maroa, and Tuhua (Mayor Island)—are presented.
Froggatt, Paul C., Lowe, David J.
core +2 more sources
Nordic Journal of Botany, EarlyView.A new species of Lentibulariaceae, Pinguicula brendae Rodríguez‐Ramírez, H.Shimai & A.R. Andrés‐Hernández, is described based on its unique morphological characteristics. This species is restricted to limestone rock walls in the San Bartolo Tutotepec municipality, central‐eastern Hidalgo, Mexico, where it inhabits a single locality on vertical, north ...
Ernesto C. Rodríguez‐ Ramírez +2 more
wiley +1 more source
Box Models of Volatile Cycles over the Entire Phanerozoic [PDF]
, 2006 Three stand-alone geochemical box models have been developed to simulate globally coupled biogeochemical cycles. These models reflect the evolution of the participating biotic and abiotic constituents in marine and terrestrial environments, including the
Bartdorff, Oliver
core
PLANTS, PEOPLE, PLANET, EarlyView.Lead (Pb) accumulation in the human body poses serious health risks. As rice is the staple food in Sri Lanka, with a high per capita intake (114 kg), there is a significant risk of Pb transfer through rice consumption. This study evaluated exchangeable Pb concentrations in soils and produced Pb distribution maps.
Anuththara Neththasinghe +6 more
wiley +1 more source
RESEARCH OF PYRITES FROM EJECTIONS OF MUD VOLCANOES OF AZERBAIJAN
Геологія і корисні копалини Світового океану, 2019 Pyrite is one of the widespread sulfide minerals of the mud volcanoes of Azerbaijan. A characteristic feature of these pyrites is the scarcity of their crystalline forms. Only in some volcanic products its fairly cubic, cubicoctahedral crystals be found)
Ad.A. Aliev, A.M. Agaev
doaj +1 more source