Results 91 to 100 of about 2,249 (210)

Source areas and geochemistry of Lower Carboniferous ignimbrites, Southern New England Orogen, N.S.W., Australia

, 2013
A number of extensive silicic ignimbrites crop out along the western edge of the southern part of the New England Orogen, in the Hunter Valley from north of Scone to Port Stephens on the central east coast of New South Wales.
Malcolm David Buck (12307040)
core   +1 more source

The Early Triassic magmatism of the Alto ParaguayProvince, Central South America: Paleomagneticand ASM data

Open Geosciences, 2015
A paleomagnetic studystudywork was carriedout on the Alto Paraguay Province (APP), a belt of alkalinecomplexes that parallel the Paraguay river for morethan 40 km at the border of Brazil and Paraguay.
Ernesto Marcia, Comin-Chiaramonti Piero, Gomes Celso de Barros   +2 more
doaj   +1 more source

Ignimbrites Related to Neogene Volcanism in the Southeast of the Iberian Peninsula: An Experimental Study to Establish Their Pozzolanic Character. [PDF]

Materials (Basel), 2023
Martín DA, Costafreda JL, Presa L, Crespo E, Parra JL, Astudillo B, Sanjuán MÁ.   +6 more
europepmc   +1 more source

Mineralogy and geochemistry of the older (>40ka) ignimbrites on the Campanian Plain, southern Italy

, 2016
The Campanian Plain in southern Italy has been volcanically active for at least the last 300 ka. The Campanian Ignimbrite (CI) erupted at 39.3 ka, has a volume of ≥310 km3 and a great areal extent.
DE VIVO, BENEDETTO, PETROSINO, PAOLA, Jackson, J. C., ROLANDI, GIUSEPPE, CANNATELLI, CLAUDIA, DOHERTY, ANGELA LOUISE, Belkin, H. E.   +6 more
core   +1 more source

Geotechnical features of the welded ignimbrites of the Canary Islands

, 2007
First geotechnical data of two pyroclastic deposits are provided: The Arico (Tenerife) and Arucas (Gran Canaria) welded ignimbrites. Average data are summarized for different coloured specimens. Ultrasonic wave velocity varies between a maximum of 4741 m/
Hernandez-Gutierrez, L. E., Rodriguez-Losada, J. A., Lomoschitz Mora-Figueroa, Alejandro   +2 more
core  

Neogene and quaternary ignimbrites in the area of Arequipa, Southern Peru : stratigraphical and petrological correlations

, 2006
This study focuses on the correlation of four newly identified rhyolitic ignimbrites located around Arequipa, which were previously described as a single ignimbrite sheet: (1) The Rio Chili Ignimbrite (ca.
Lebti, P. P., Fornari, Michel, Fornari, M., Worner, G., Lebti, P.P., Thouret, J.C., Fomari, M., Paquereau-Lebti, Perrine, Thouret, Jean-Claude   +8 more
core   +1 more source

Geology of the boundary between the Sierra Madre Occidental and the Trans-Mexican Volcanic Belt in the Guadalajara region, western Mexico

Revista Mexicana de Ciencias Geológicas, 2018
To investigate the time-space relationship between the Sierra Madre Occidental (SMO) and the Trans-Mexican Volcanic Belt (TMVB), as well as the early volcanic activity of the TMVB, a field study was carried out in the region north of Guadalajara City ...
Andrea Rossotti, Luca Ferrari, Margarita López-Martínez, José Rosas-Elguera   +3 more
doaj  

A scanning electron microscope study of post-depositional changes in the northeast Nigde ignimbrites, South Central Anatolia, Turkey

, 1999
The ignimbrites of the northeast Nigde area, which are subdivided into the Lower, Middle and Upper ignimbrites on the basis of their compositional and stratigraphical characteristics, display textural variations from the base to the top.
Yurtmen S., Rowbotham G.
core  

(Table 3) Fission track age data for zircons from ignimbrites in Taupo Volcanic Zone

, 1992
Age is fission track age, calculated using the zeta calibration method. Ignimbrites in Taupo Volcanic Zone (position is a mean of the Taupo Volcanic complex) are possible correlatives of Rangitawa ...
B P Kohn (7909976), Kohn, B P, McGlone, Matt S, Matt S McGlone (7909979), Pillans, Brad J, Brad J Pillans (6973055)   +5 more
core   +1 more source

Rapid caldera subsidence and fluctuating eruption dynamics: the lithostratigraphy and structure of the Loch Bà Caldera, Isle of Mull, NW Scotland

Volcanica
Caldera-forming eruptions represent extremely hazardous events. The Loch Bà Caldera on the Isle of Mull, NW Scotland, preserves an ~120 m thick sequence of Palaeogene silicic pyroclastic rocks and collapse breccias.
Peter Nicholls, David Brown, Ross Dymock
doaj   +1 more source