Results 81 to 90 of about 42,376 (259)
Brazilian Journal of Geology: The impetus for this research was the enigma regarding the origin of the extensive silicic volcanic units in the Paraná-Etendeka Igneous Province. Are they rheoignimbrites, lava flows, or a combination of both? The São Joaquim silicic eruptive sequence
Marcell Leonard Besser +2 more
doaj +1 more source
Tertiary-Quaternary subduction processes and related magmatism in the Alpine-Mediterranean region [PDF]
, 2006 During Tertiary to Quaternary times, convergence between Eurasia and Africa resulted in a variety of collisional orogens and different styles of subduction in the Alpine-Mediterranean region.
Downes, Hilary +2 more
core +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
Effect of silica fertilizer on accumulation of phytolith in rice plant and soil [PDF]
E3S Web of ConferencesPhytoliths, silica structures formed in plant tissues, significantly contribute to carbon capture by stabilizing organic carbon within their structures and aiding long-term carbon sequestration in soils.
Phakeenuya Vanarat +6 more
doaj +1 more source
Fault textures in volcanic conduits: evidence for seismic trigger mechanisms during silicic eruptions. [PDF]
, 2005 It is proposed that fault textures in two dissected rhyolitic conduits in Iceland preserve evidence for shallow seismogenic faulting within rising magma during the emplacement of highly viscous lava flows. Detailed field and petrographic analysis of such
Dingwell, DB, Tuffen, H
core
Majallah-i ̒Ulum-i Bāghbānī, 2017 Introduction: Scented geranium (Pelargonium graveolens) is a perennial plant of the family Geranium (Geraniaceae). Although CaCl2 at higher concentrations than NaCl in the soils and ground water in many areas of the word, most studies have been based on ...
fateme hasanvand +2 more
doaj +1 more source
Silicates, Silicate Weathering, and Microbial Ecology [PDF]
Geomicrobiology Journal, 2001 Mineralogy, microbial ecology, and mineral weathering in the subsurface are an intimately linked biogeochemical system. Although bacteria have been implicated indirectly in the accelerated weathering of minerals, it is not clear if this interaction is simply the coincidental result of microbial metabolism, or if it represents a specific strategy ...
openaire +1 more source
Thermal properties of vesicular rhyolite [PDF]
, 1994 Thermal diffusivity of rhyolite melt and rhyolite foam (70–80% porosity) has been measured using the radial heat transfer method. Cylindrical samples (length 50–55 mm, diameter 22 mm) of rhyolite melt and foam have been derived by heating samples of ...
Bagdassarov +37 more
core +1 more source
Ages on weathered Plio-Pleistocene tephra sequences, western North Island, New Zealand [PDF]
, 2001 Using the zircon fission-track method, we have obtained five ages on members of two strongly-weathered silicic, Pliocene-Pleistocene tephra sequences, the Kauroa and Hamilton Ash formations, in western North Island, New Zealand.
Briggs, Roger M. +5 more
core +1 more source