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geologia: Pasto Ventura

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3 million years to about 270,000 years for volcanic rocks in the field..
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3 million years to about 270,000 years for volcanic rocks in the field.
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Pasto Ventura is an area in the Catamarca Province of Argentina. It features about 14 small Pleistocene volcanoes, mostly cinder cones with associated lava flows but also lava domes, tuff rings and two maars. The volcanoes are accompanied by pyroclastic deposits and their total volume reaches about 0.42 cubic kilometres (0.10 cu mi). Argon-argon dating has yielded ages ranging from 1.3 million years to about 270,000 years for volcanic rocks in the field. Faults have displaced several of the cones, and their movement reflects a tectonic environment characterized by ongoing extension of the Altiplano-Puna high plateau. Several dry valleys cross across the volcanic field and a lake (Laguna Pasto Ventura) is also located within the field. The climate in the region is currently arid but may have been wetter in the past. Vegetation consists of sparse bush.
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Notatka fact-checku: Fact-check 3.0-content-aware: no sufficient claim-bound corroboration after 3 healthy attempts. Scope=verify the factual claim. Required independent sources=2; stored evidence groups=1. Provider/API errors did not consume attempts. | Fact-check 4.3.2: research wznowiony bez zdejmowania HOLD. Poprzednia metoda: factcheck-300-content-aware. | Fact-check 4.3.2: research wznowiony bez zdejmowania HOLD. Poprzednia metoda: factcheck-weekly-research-432.

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Wikipedia ENPOTWIERDZAniezależne

Evidence: 91 • authority: 72

Pasto Ventura is an area in the Catamarca Province of Argentina. It features about 14 small Pleistocene volcanoes, mostly cinder cones with associated lava flows but also lava domes, tuff rings and two maars. The volcanoes are accompanied by pyroclastic deposits and their total volume reaches about 0.42 cubic kilometres (0.10 cu mi). Argon-argon dating has yielded ages ranging from 1.3 million years to about 270,000 years for volcanic rocks in the field. Faults have displaced several of the cones, and their movement reflects a tectonic environment characterized by ongoing extension of the Altiplano-Puna high plateau. Several dry valleys cross across the volcanic field and a lake (Laguna Pas…

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US Geological Surveypomocniczeniezależne

Evidence: 45 • authority: 80

Summary of chemical analyses and 40Ar/39Ar age-spectra data for Eocene volcanic rocks from the central part of the Northeast Nevada volcanic field

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CRC Presspomocniczeniezależne

Evidence: 33 • authority: 80

Mechanical behavior of volcanic rocks

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Thomas Telford Publishingpomocniczeniezależne

Evidence: 33 • authority: 80

Chapter XXX. Age Of Volcanic Rocks—<i>continued</i>.

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Natural Resources Canada/CMSS/Information Managementpomocniczeniezależne

Evidence: 33 • authority: 80

Keweenawan volcanic rocks of Michipicoten Island, Lake Superior, Ontario, an eruptive centre of proterozoic age

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Geological Society of Americapomocnicze

Evidence: — • authority: 80

THE YOUNGEST KNOWN VOLCANIC ROCKS OF THE MARKAGUNT MEGABRECCIA (LATEST OLIGOCENE OR EARLIEST MIOCENE), HIGH PLATEAUS, SOUTHWESTERN UTAH: THE MISSING LINK TO THE BIRTH AND TRUE AGE OF THE MYSTICAL CREATURE

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CRC Presspomocnicze

Evidence: — • authority: 80

Underground caverns in volcanic rocks: Geological aspects and associated geotechnical behaviour of pyroclastic rocks

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Macmillan Education UKpomocnicze

Evidence: — • authority: 80

Field Identification of Lake District Volcanic Rocks

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