Misplaced Pages

Laguna Colorada (caldera)

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.

22°15′S 67°30′W / 22.250°S 67.500°W / -22.250; -67.500 Laguna Colorada is an ignimbrite shield of the Altiplano-Puna volcanic complex at an altitude of 5,000 metres (16,000 ft) in the Potosi Department of Bolivia.

Laguna Colorada is a c. 40 kilometres (25 mi) wide ignimbrite shield that was formerly also known as Panizos (not to be confused with Cerro Panizos. The shield is not clearly associated with a caldera but appears to contain a sag structure. The ignimbrite field is bordered by the Laguna Colorada to the west, Cerro Torque in the north and Quetena to the east; Laguna Colorada is also the origin of the name of the shield. Likewise, the "Tatio formation" at El Tatio originates from eruptions at Laguna Colorada; the 700,000 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 with Laguna Colorada. This ignimbrite was erupted 1.98 million years ago and has a volume of 60 cubic kilometres (14 cu mi) dense rock equivalent, covering a surface of about 1,100 square kilometres (420 sq mi). Several fall deposits occur both within and below the ignimbrite. This ignimbrite is also known as the Tatio ignimbrite and given a volume of 150 cubic kilometres (36 cu mi) dense rock equivalent, or the Aguadita tuffs. The ignimbrite is one of the youngest in the region and keeps a noticeable texture in high altitude images. Deposits perhaps correlated to this ignimbrite have been recovered in the Quebrada de Humahuaca region.

The active geothermal fields of El Tatio and Sol de Manana are located around the Laguna Colorada system. As of 2018, a pilot geothermal power project was underway at Laguna Colorada. An electrical conductivity anomaly beneath Laguna Colorada has been interpreted either as new magma or hydrothermally altered material. Recent satellite imagery has shown that Laguna Colorada is subsiding at a rate of 4 millimetres per year (0.16 in/year), with the subsidence encompassing the area of the Laguna Colorada ignimbrite and covering a diameter of 20 kilometres (12 mi).

References

  1. ^ Salisbury, Morgan J.; Jicha, Brian R.; Silva, Shanaka L. de; Singer, Brad S.; Jiménez, Néstor C.; Ort, Michael H. (2011-05-01). "40Ar/39Ar chronostratigraphy of Altiplano-Puna volcanic complex ignimbrites reveals the development of a major magmatic province". GSA Bulletin. 123 (5–6): 821–840. Bibcode:2011GSAB..123..821S. doi:10.1130/B30280.1. ISSN 0016-7606.
  2. del Potro, Rodrigo; Díez, Mikel; Blundy, Jon; Camacho, Antonio G.; Gottsmann, Joachim (2013-05-28). "Diapiric ascent of silicic magma beneath the Bolivian Altiplano". Geophysical Research Letters. 40 (10): 2044–2048. Bibcode:2013GeoRL..40.2044D. doi:10.1002/grl.50493. hdl:10261/88258. ISSN 1944-8007. S2CID 31771758.
  3. ^ Henderson, S. T.; Pritchard, M. E. (2013-05-01). "Decadal volcanic deformation in the Central Andes Volcanic Zone revealed by InSAR time series". Geochemistry, Geophysics, Geosystems. 14 (5): 1358–1374. Bibcode:2013GGG....14.1358H. doi:10.1002/ggge.20074. ISSN 1525-2027.
  4. ^ Fernández Vázquez, Carlos A. A.; Fernández Fuentes, Miguel (March 2018). "Inventario, evaluación y proyección de las emisiones de carbono provenientes del sector eléctrico nacional. Bolivia 2025". Acta Nova. 8 (3): 354–375. ISSN 1683-0768.
  5. ^ Deroin, Jean-Paul; Téreygeol, Florian; Cruz, Pablo; Guillot, Ivan; Méaudre, Jean-Charles (2012). "Integrated non-invasive remote-sensing techniques and field survey for the geoarchaeological study of the Sud Lípez mining district, Bolivia". Journal of Geophysics and Engineering. 9 (4): S40. Bibcode:2012JGE.....9S..40D. doi:10.1088/1742-2132/9/4/S40. ISSN 1742-2140.
  6. "Volcanic and tectonic history of El Tatio area (central Andes, northern Chile): explanatory notes to the 1:50000 scale geological map". ResearchGate. pp. 12–13. Retrieved 2017-07-26.
  7. Salisbury, M.; de Silva, S. L.; Jicha, B.; Singer, B.; Jiménez, N.; Ort, M. (2008-12-01). "New 40Ar/39Ar Ages From Southwest Bolivia Refine the Timing of APVC Volcanism". AGU Fall Meeting Abstracts. 21: V21C–2117. Bibcode:2008AGUFM.V21C2117S.
  8. de Silva, Shanaka L.; Gosnold, William D. (2007-11-01). "Episodic construction of batholiths: Insights from the spatiotemporal development of an ignimbrite flare-up". Journal of Volcanology and Geothermal Research. Large Silicic Magma Systems. 167 (1): 320–335. Bibcode:2007JVGR..167..320D. doi:10.1016/j.jvolgeores.2007.07.015.
  9. Coira, Beatriz; Galli, Claudia I.; Kay, Suzanne Mahlburg; Stockli, Daniel F.; Flores, Patrocinio; Eveling, Emilio (31 May 2022). "Pliocene-Pleistocene ash-fall tuff deposits in the intermountain Humahuaca and Casa Grande basins, northwestern Argentina: tracers in chronostratigraphic reconstructions and key to identify their volcanic sources". Andean Geology. 49 (2): 208–237. doi:10.5027/andgeoV49n2-3377. hdl:11336/196915. ISSN 0718-7106. S2CID 247305850.
  10. Fernandez-Turiel, J. L.; Garcia-Valles, M.; Gimeno-Torrente, D.; Saavedra-Alonso, J.; Martinez-Manent, S. (2005-10-15). "The hot spring and geyser sinters of El Tatio, Northern Chile". Sedimentary Geology. 180 (3): 125–147. Bibcode:2005SedG..180..125F. doi:10.1016/j.sedgeo.2005.07.005.
  11. Comeau, Matthew J.; Unsworth, Martyn J.; Ticona, Faustino; Sunagua, Mayel (2015-03-01). "Magnetotelluric images of magma distribution beneath Volcán Uturuncu, Bolivia: Implications for magma dynamics". Geology. 43 (3): 243–246. Bibcode:2015Geo....43..243C. doi:10.1130/G36258.1. ISSN 0091-7613.
Categories: