Jurassic hot spring deposits of the Deseado Massif (Patagonia, Argentina): Characteristics and controls on regional distribution
The Deseado Massif, Santa Cruz Province, Argentinean Patagonia, hosts numerous Middle to Late Jurassic age geothermal and epithermal features represented by siliceous and calcareous chemical precipitates from hot springs (sinters and travertines, respectively), hydrothermal breccias, quartz veins, a...
Published in: | Journal of Volcanology and Geothermal Research |
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Language: | English |
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Elsevier Science B.V.
2011
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Online Access: | http://hdl.handle.net/2292/16456 https://doi.org/10.1016/j.jvolgeores.2011.04.001 |
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ftunivauckland:oai:researchspace.auckland.ac.nz:2292/16456 2023-05-15T13:58:52+02:00 Jurassic hot spring deposits of the Deseado Massif (Patagonia, Argentina): Characteristics and controls on regional distribution Guido, DM Campbell, KA 2011 http://hdl.handle.net/2292/16456 https://doi.org/10.1016/j.jvolgeores.2011.04.001 English eng Elsevier Science B.V. Journal of Volcanology and Geothermal Research Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/0377-0273/ https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm Copyright: Elsevier Science B.V. http://purl.org/eprint/accessRights/RestrictedAccess http://dx.doi.org/10.1016/j.jvolgeores.2011.04.001 Science & Technology Physical Sciences Geosciences Multidisciplinary Geology Deseado Massif Patagonia Jurassic hot springs facies analysis regional faults epithermal TAUPO VOLCANIC ZONE YELLOWSTONE-NATIONAL-PARK NEW-ZEALAND NORTH-ISLAND STRUCTURAL EVOLUTION ANTARCTIC PENINSULA SILICEOUS SINTER SAN AGUSTIN LA MARCIANA BREAK-UP Journal Article 2011 ftunivauckland https://doi.org/10.1016/j.jvolgeores.2011.04.001 2013-12-07T09:49:12Z The Deseado Massif, Santa Cruz Province, Argentinean Patagonia, hosts numerous Middle to Late Jurassic age geothermal and epithermal features represented by siliceous and calcareous chemical precipitates from hot springs (sinters and travertines, respectively), hydrothermal breccias, quartz veins, and widespread hydrothermal silicification. They indicate pauses in explosive volcanic activity, marking the final stages in the evolution of an extensive Jurassic (ca. 178-151 Ma) volcanic complex set in a diffuse extensional back-arc setting heralding the opening of the Atlantic Ocean. Published paleo-hot spring sites for the Deseado Massif, plus additional sites identified during our recent field studies, reveal a total of 23 locations, five of which were studied in detail to determine their geologic and facies associations. They show structural, lithologic, textural and biotic similarities with Miocene to Recent hot spring systems from the Taupo and Coromandel volcanic zones, New Zealand, as well as with modern examples from Yellowstone National Park, U.S.A. These comparisons aid in the definition of facies assemblages for Deseado Massif deposits - proximal, middle apron and distal siliceous sinter and travertine terraces and mounds, with preservation of many types of stromatolitic fabrics - that likely were controlled by formation temperature, pH, hydrodynamics and fluid compositions. Locally the mapped hot spring deposits largely occur in association with reworked volcaniclastic lacustrine and/or fluvial sediments, silicic to intermediate lava domes, and hydrothermal mineralization, all of which are related to local and regional structural lineaments. Moreover, the numerous geothermal and significant epithermal (those with published minable resources) deposits of the Deseado Massif geological province mostly occur in four regional NNW and WNW hydrothermal-structural belts (Northwestern, Northern, Central, and Southern), defined here by alignment of five or more hot spring deposits and confirmed as structurally controlled by aeromagnetic data. The Northern and Northwestern belts, in particular, concentrate most of the geothermal and epithermal occurrences. Hence, Jurassic hydrothermal fluid flow was strongly influenced by the most dominant and long-active geological boundaries in the region, the outer limits of the Deseado Massif 'horst' itself. (C) 2011 Elsevier B.V. All rights reserved. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula University of Auckland Research Repository - ResearchSpace Antarctic Antarctic Peninsula Argentina New Zealand Patagonia Journal of Volcanology and Geothermal Research 203 1-2 35 47 |
institution |
Open Polar |
collection |
University of Auckland Research Repository - ResearchSpace |
op_collection_id |
ftunivauckland |
language |
English |
topic |
Science & Technology Physical Sciences Geosciences Multidisciplinary Geology Deseado Massif Patagonia Jurassic hot springs facies analysis regional faults epithermal TAUPO VOLCANIC ZONE YELLOWSTONE-NATIONAL-PARK NEW-ZEALAND NORTH-ISLAND STRUCTURAL EVOLUTION ANTARCTIC PENINSULA SILICEOUS SINTER SAN AGUSTIN LA MARCIANA BREAK-UP |
spellingShingle |
Science & Technology Physical Sciences Geosciences Multidisciplinary Geology Deseado Massif Patagonia Jurassic hot springs facies analysis regional faults epithermal TAUPO VOLCANIC ZONE YELLOWSTONE-NATIONAL-PARK NEW-ZEALAND NORTH-ISLAND STRUCTURAL EVOLUTION ANTARCTIC PENINSULA SILICEOUS SINTER SAN AGUSTIN LA MARCIANA BREAK-UP Guido, DM Campbell, KA Jurassic hot spring deposits of the Deseado Massif (Patagonia, Argentina): Characteristics and controls on regional distribution |
topic_facet |
Science & Technology Physical Sciences Geosciences Multidisciplinary Geology Deseado Massif Patagonia Jurassic hot springs facies analysis regional faults epithermal TAUPO VOLCANIC ZONE YELLOWSTONE-NATIONAL-PARK NEW-ZEALAND NORTH-ISLAND STRUCTURAL EVOLUTION ANTARCTIC PENINSULA SILICEOUS SINTER SAN AGUSTIN LA MARCIANA BREAK-UP |
description |
The Deseado Massif, Santa Cruz Province, Argentinean Patagonia, hosts numerous Middle to Late Jurassic age geothermal and epithermal features represented by siliceous and calcareous chemical precipitates from hot springs (sinters and travertines, respectively), hydrothermal breccias, quartz veins, and widespread hydrothermal silicification. They indicate pauses in explosive volcanic activity, marking the final stages in the evolution of an extensive Jurassic (ca. 178-151 Ma) volcanic complex set in a diffuse extensional back-arc setting heralding the opening of the Atlantic Ocean. Published paleo-hot spring sites for the Deseado Massif, plus additional sites identified during our recent field studies, reveal a total of 23 locations, five of which were studied in detail to determine their geologic and facies associations. They show structural, lithologic, textural and biotic similarities with Miocene to Recent hot spring systems from the Taupo and Coromandel volcanic zones, New Zealand, as well as with modern examples from Yellowstone National Park, U.S.A. These comparisons aid in the definition of facies assemblages for Deseado Massif deposits - proximal, middle apron and distal siliceous sinter and travertine terraces and mounds, with preservation of many types of stromatolitic fabrics - that likely were controlled by formation temperature, pH, hydrodynamics and fluid compositions. Locally the mapped hot spring deposits largely occur in association with reworked volcaniclastic lacustrine and/or fluvial sediments, silicic to intermediate lava domes, and hydrothermal mineralization, all of which are related to local and regional structural lineaments. Moreover, the numerous geothermal and significant epithermal (those with published minable resources) deposits of the Deseado Massif geological province mostly occur in four regional NNW and WNW hydrothermal-structural belts (Northwestern, Northern, Central, and Southern), defined here by alignment of five or more hot spring deposits and confirmed as structurally controlled by aeromagnetic data. The Northern and Northwestern belts, in particular, concentrate most of the geothermal and epithermal occurrences. Hence, Jurassic hydrothermal fluid flow was strongly influenced by the most dominant and long-active geological boundaries in the region, the outer limits of the Deseado Massif 'horst' itself. (C) 2011 Elsevier B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Guido, DM Campbell, KA |
author_facet |
Guido, DM Campbell, KA |
author_sort |
Guido, DM |
title |
Jurassic hot spring deposits of the Deseado Massif (Patagonia, Argentina): Characteristics and controls on regional distribution |
title_short |
Jurassic hot spring deposits of the Deseado Massif (Patagonia, Argentina): Characteristics and controls on regional distribution |
title_full |
Jurassic hot spring deposits of the Deseado Massif (Patagonia, Argentina): Characteristics and controls on regional distribution |
title_fullStr |
Jurassic hot spring deposits of the Deseado Massif (Patagonia, Argentina): Characteristics and controls on regional distribution |
title_full_unstemmed |
Jurassic hot spring deposits of the Deseado Massif (Patagonia, Argentina): Characteristics and controls on regional distribution |
title_sort |
jurassic hot spring deposits of the deseado massif (patagonia, argentina): characteristics and controls on regional distribution |
publisher |
Elsevier Science B.V. |
publishDate |
2011 |
url |
http://hdl.handle.net/2292/16456 https://doi.org/10.1016/j.jvolgeores.2011.04.001 |
geographic |
Antarctic Antarctic Peninsula Argentina New Zealand Patagonia |
geographic_facet |
Antarctic Antarctic Peninsula Argentina New Zealand Patagonia |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_source |
http://dx.doi.org/10.1016/j.jvolgeores.2011.04.001 |
op_relation |
Journal of Volcanology and Geothermal Research |
op_rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/0377-0273/ https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm Copyright: Elsevier Science B.V. http://purl.org/eprint/accessRights/RestrictedAccess |
op_doi |
https://doi.org/10.1016/j.jvolgeores.2011.04.001 |
container_title |
Journal of Volcanology and Geothermal Research |
container_volume |
203 |
container_issue |
1-2 |
container_start_page |
35 |
op_container_end_page |
47 |
_version_ |
1766267227970994176 |