Results 71 to 80 of about 2,249 (210)
, 2023 The Paleocene-Eocene Catán Lil Ignimbrite (CLI) is one of the few occurrences within the explosive acid volcanism of this age in the extra-Andean region of the North Patagonian Massif.
Salani, Flavia +7 more
core +1 more source
Revista Mexicana de Ciencias Geológicas, 2019 Igneous rocks of the Sierra Madre Occidental have been mapped and dated along latitude 24° N between Mazatlán and Durango City and near latitude 28° N in Chihuahua.
Fred W. McDowell, Stephen E. Clabaugh
doaj
Engineering Reports, Volume 8, Issue 5, May 2026.Integrated VES, ERI, and MASW surveys, constrained by boreholes, delineate a central low‐resistivity/low‐V s weak corridor and more competent volcanic strata at depth. The eastern sector offers preferable foundation conditions, while identified weak zones require ground improvement or deep foundations to mitigate differential‐settlement risk.
Alemayehu Ayele +2 more
wiley +1 more source
, 1995 Voluminous, rhyolitic ignimbrites erupted from calderas in the Taupo Volcanic Zone (TVZ) of North Island, New Zealand during the last ca. 1.6 Ma, are characterised by geochemical, paleomagnetic, magnetic fabric and isotopic age techniques to determine ...
Black, Tasha Maria (11658370)
core +1 more source
Impacto ambiental en el geosistema de las canteras de sillar de Añashuayco – Arequipa
Espacio y Desarrollo, 2007 The quarries of Añashuayco are located northwest of the city of Arequipa on a peneplain formedby ignimbrites and alluvionic deposits.The geomorphology of the area is made by a traversal quebrada coming down from the Chachani volcano until its contact ...
Carlos César Trujillo Vera
doaj
Earth Surface Processes and Landforms, Volume 51, Issue 5, May 2026.We outline the geomorphological relationships between glaciers, lakes and bofedal wetlands, and the way in which moraines, talus slopes and sandar interact with catchment hydrology in the tropical Andes of Peru. Bofedales are well developed within glacial limits, with glacial processes such as erosion and formation of moraines providing the poorly ...
Bethan Davies +12 more
wiley +1 more source
Nuées ardentes and Ignimbrites [PDF]
Nature, 1946 A MODERN text-book of volcanology by Prof. C. A. Cotton, published under the somewhat misleading title “Volcanoes as Landscape Forms”1, has recently been reviewed in Nature by Prof. Arthur Holmes2. The book is beautifully illustrated and well documented ; it thus fills a gap in British volcanological literature and is likely to be widely read by ...
openaire +1 more source
The origin and history of alteration and carbonatization of the Yucca Mountain ignimbrites. Volume 2, Appendix B [PDF]
, 1992 A geological history is presented for Yucca Mountain.
Szymanski, J.S., Szymanski, J. S.
core +1 more source
Earth, Planets and SpaceThe Youngest (74 ka) Toba Tuff (YTT) super-eruption is traditionally interpreted as a single, short-lived event. However, new paleomagnetic data from both southern and northern non-welded exposures of YTT’s Units 2, 3, and 4 (in ascending order ...
Gabriela Nogo Retnaningtyas Bunga Naen +6 more
doaj +1 more source
Early Miocene large-volume ignimbrites of the Oxaya Formation, Central Andes [PDF]
, 2016 During the early Miocene ignimbrite flare-up, significant parts of the Central Andes (17–20°S) were covered by large-volume ignimbrites. High-precision 206Pb/238U zircon dates constrain the flare-up in northern Chile at c.
Condon, Daniel J +11 more
core +1 more source