Ignimbrite is a type of volcanic rock, consisting of hardened tuff. Ignimbrites form from the deposits of pyroclastic flows, which are a hot suspension...
23 KB (2,987 words) - 19:18, 3 January 2025
The Campanian Ignimbrite eruption (CI, also CI eruption) was a major volcanic eruption in the Mediterranean during the late Quaternary, classified 7 on...
42 KB (4,280 words) - 14:04, 11 January 2025
The Mid-Tertiary ignimbrite flare-up, was a dramatic period of volcanic eruptions in mid-Cenozoic time, approximately 25–40 million years ago, centered...
5 KB (503 words) - 02:25, 28 October 2023
ejected more than 340 cubic kilometres (82 cu mi) of rhyolitic Mamaku ignimbrite giving it a Volcanic Explosivity Index of 7. The eruption has been reinterpreted...
14 KB (1,131 words) - 20:57, 21 September 2024
320 km3 (77 cu mi) of pyroclastic density current (PDC) deposits (mostly ignimbrite) and 420 km3 (100 cu mi) of primary intracaldera material, equivalent...
27 KB (2,692 words) - 05:50, 2 January 2025
stick together as a rock called ignimbrite. Pyroclastic flows can travel hundreds of kilometres an hour. Earlier ignimbrite eruptions occurred further north...
53 KB (4,813 words) - 07:42, 7 January 2025
56 mya Chaxas ignimbrite in the Andes. The ignimbrite dips away from the domes and are partially younger than the Puripicar ignimbrite. The dome has a...
3 KB (272 words) - 20:47, 11 September 2024
Galán (section Galán ignimbrite)
source of the Galán ignimbrite, which covered the surroundings of the caldera with volcanic material. The volume of this ignimbrite has been estimated...
51 KB (6,017 words) - 03:52, 20 January 2025
Altiplano–Puna volcanic complex (section Ignimbrites)
and Chile. In the Miocene–Pliocene (10-1 mya), calderas erupted felsic ignimbrites in four distinct pulses separated by periods of low levels of activity...
45 KB (5,809 words) - 06:30, 6 January 2025
Purico complex (section Post-ignimbrite activity)
Pleistocene volcanic complex in Chile close to Bolivia, formed by an ignimbrite, several lava domes and stratovolcanoes and one maar. It is in the Chilean...
51 KB (6,165 words) - 18:20, 11 January 2025
produced more than 1,000 km3 (240 cu mi) of rhyodacitic-rhyolitic ignimbrite. The ignimbrite from this eruption forms the 10-to-1,350-metre-thick (33 to 4...
2 KB (183 words) - 09:57, 5 August 2023
volcanic sandstone. The ignimbrite displays zonation typical of welded ashflow tuffs and is a prominent ridge former. The ignimbrite was radiometrically dated...
5 KB (391 words) - 16:06, 18 November 2024
Cienago Ignimbrite erupted over 350 cubic kilometres (84 cu mi) from Panizos about 7.9 million years ago, and 6.7 million years ago the Panizos Ignimbrite erupted...
42 KB (5,085 words) - 01:41, 11 December 2024
Geological Maps of Japan". Geological Survey of Japan, AIST. "Thórsmörk Ignimbrite(correlated to Ash Zone 2)". VOGRIPA. Retrieved 27 May 2024. This source...
68 KB (1,155 words) - 10:55, 6 October 2024
; Best, Myron G. (1 August 2013). "The 36–18 Ma Indian Peak–Caliente ignimbrite field and calderas, southeastern Great Basin, USA: Multicyclic super-eruptions"...
29 KB (2,493 words) - 05:38, 6 January 2025
years old Tatio ignimbrite however is considered to be separate. An older ignimbrite was erupted 2.21±0.05 million years ago. An ignimbrite is associated...
8 KB (872 words) - 12:49, 15 November 2024
I included both a rhyolitic ignimbrite and a simultaneous Plinian dispersal of rhyolitic tephra fallout. The ignimbrite consisted of 9 separate packages...
11 KB (1,328 words) - 09:34, 23 September 2023
recorded by sanidine. Two samples from ignimbrite visually closely similar to unit 1 or 2, the oldest ignimbrite units of the Lava Creek Tuff, have 40Ar/39Ar...
13 KB (1,433 words) - 22:06, 16 July 2024
Valleys had been filled with ignimbrite, evening out the shape of the land. The Waikato River had been blocked by ignimbrite deposits with the lowest blockage...
22 KB (2,206 words) - 07:26, 11 September 2024
evidence of a human origin and they concluded the formation is a natural ignimbrite outcrop formed 330,000 years ago. Archaeologist Neville Ritchie of the...
32 KB (3,195 words) - 07:00, 1 January 2025
kilometres (43 cu mi)) Toconao ignimbrite. The Pujsa ignimbrite was erupted by La Pacana before the Atana/Toconao ignimbrites, and the Filo Delgado and Pampa...
32 KB (4,073 words) - 09:28, 28 August 2024
Two major ignimbrites, the 5.6-5.8 mya Guacha ignimbrite with a volume of 1,300 cubic kilometres (310 cu mi) and the 3.5-3.6 mya Tara ignimbrite with a volume...
25 KB (3,121 words) - 14:23, 14 September 2024
proceeded through three major volcanic cycles. Each cycle involved a large ignimbrite eruption, continental-scale ash-fall, and caldera collapse, preceded and...
64 KB (6,998 words) - 10:41, 21 January 2025
Creek Caldera was found to be a match to the Peach Spring Tuff after an ignimbrite sample from within the caldera matched the phenocryst makeup and age of...
6 KB (773 words) - 07:03, 17 July 2024
eruptions have created several ignimbrites. An eruption occurred 73,000 years ago and formed the Campo de la Piedra Pómez ignimbrite layer. About 2,300 ± 160...
87 KB (9,961 words) - 06:34, 30 December 2024
The Fish Canyon Tuff is the large volcanic ash flow or ignimbrite deposit resulting from one of the largest known explosive eruptions on Earth, estimated...
3 KB (341 words) - 22:20, 28 August 2024
(48 cu mi) of magma (500 km3 (120 cu mi) bulk volume) to produce the Campanian Ignimbrite eruption. Its Volcanic Explosivity Index (VEI) was 7 and it left a large...
35 KB (3,743 words) - 22:14, 10 January 2025
Los Frailes is an ignimbrite plateau in Bolivia, between the city of Potosi and the Lake Poopo. It belongs to a group of ignimbrites that exist in the...
14 KB (1,761 words) - 12:53, 11 December 2023
the source of the Incapillo ignimbrite, a medium-sized deposit comparable to the Katmai ignimbrite. The Incapillo ignimbrite was erupted 0.52 ± 0.03 and...
35 KB (3,976 words) - 06:07, 14 June 2024
Matahina ignimbrite is exposed north of the Tarawera River in the embayment, Rotoiti ignimbrite at its southern margins and Kawerau ignimbrite at its centre...
10 KB (981 words) - 10:35, 11 March 2024