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  • 1
    Publication Date: 2017-04-04
    Description: We describe the Miocene–Quaternary geological–structural evolution of the region between the Salar de Uyuni and de Atacama, Andes of Chile and Bolivia. We recognized four main tectonic events based on fold geometry, fault kinematics and stratigraphic data. The oldest event, of Miocene age, is characterized by folding and reverse faulting of the sedimentary successions with an E–W direction of shortening in the northern part of the studied area and a WNW–ESE shortening in the southern part. The following two events, of Pliocene age, are characterized by lower shortening amounts; they occurred first by reverse faulting with a NW–SE-trending greatest principal stress (ó1, computed with striated fault planes) and a vertical least principal stress (ó3), followed by pervasive strike-slip faulting with the same NW–SE-trending ó1 and a horizontal NE–SW ó3. The fourth event, dating to the late Pliocene–Quaternary is characterized by normal faulting: the ó3 still trends NE–SW, whereas the intermediate principal stress ó2 exchanged with ó1. Volcanism accompanied both the contractional, transcurrent and extensional tectonic phases. The Mio–Pliocene compression appears directly linked to a rapid convergence and an apparently important coupling between the continental and oceanic plates. The E–W to WNW–ESE direction of shortening of the Miocene structures and the NW–SE ó1 of the Pliocene structures seem to be more linked to an intra-Andean reorientation of structures following the WNW-directed absolute motion of the South-American Plate. The extensional deformations can be interpreted as related to gravity forces affecting the highest parts of the volcanic belt in a sort of asymmetrical (SW-ward) collapse of the belt.
    Description: Published
    Description: 114-135
    Description: 3.2. Tettonica attiva
    Description: JCR Journal
    Description: reserved
    Keywords: Chile ; Bolivia ; Andes ; Fault ; Fold ; Tectonic phases ; 04. Solid Earth::04.04. Geology::04.04.09. Structural geology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
    Publication Date: 2017-04-04
    Description: We describe the Miocene-Quaternary geological-structural evolution of the region between the Salar de Uyuni and de Atacama, Andes of Chile and Bolivia. We recognised four main tectonic events based on fold geometry, fault kinematics and stratigraphic data. The oldest event, of Miocene age, is characterized by folding and reverse faulting of the sedimentary successions with an E-W direction of shortening in the northern part of the studied area and a WNW-ESE shortening in the southern part. The following two events, of Pliocene age, are characterized by lower shortening amounts; they occurred first by reverse faulting with a NW-SE-trending greatest principal stress (1, computed with striated fault planes) and a vertical least principal stress (3), followed by pervasive strike-slip faulting with the same NW-SE-trending 1 and a horizontal NE-SW 3. The fourth event, dating to the late Pliocene-Quaternary is characterised by normal faulting: the 3 still trends NE-SW, whereas the intermediate principal stress 2 exchanged with 1. Volcanism accompanied both the contractional, transcurrent and extensional tectonic phases. The Mio-Pliocene compression appears directly linked to a rapid convergence and an apparently important coupling between the continental and oceanic plates. The E-W to WNW-ESE direction of shortening of the Miocene structures and the NW-SE 1 of the Pliocene structures seem to be more linked to an intra-Andean re-orientation of structures following the WNW-directed absolute motion of the South-American Plate. The extensional deformations can be interpreted as related to gravity forces affecting the highest parts of the volcanic belt in a sort of asymmetrical (SW-ward) collapse of the belt.
    Description: In press
    Description: 3.2. Tettonica attiva
    Description: JCR Journal
    Description: reserved
    Keywords: Chile ; Bolivia ; Andes ; tectonic phases ; 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
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    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 53 no. 2, pp. 462-464
    Publication Date: 2024-01-12
    Description: A large amount of unidentified material of the Neotropical genus Guatteria (Annonaceae) is lying on herbarium shelves around the world. Here twelve species are described in an attempt to reduce this amount of unidentified material. Next to this, previously unidentified material is now assigned to G. asplundiana, G. microcarpa, G. pastazae, and G. scalarinervia, four previously described but poorly known species, thus providing a clearer circumscription of these species. Furthermore, G. discolor and G. megalophylla appear to have a wider distribution than previously thought. Lastly, G. macrantha, a curious species only known from the type, is excluded from the genus and referred to Uvaria. With the description of twelve new species and the synonymizing of one, the total number of species in Guatteria adds up to over 300, thus rivalling Inga (Fabaceae) and Ocotea (Lauraceae) for the status of largest genus of Neotropical trees.
    Keywords: Annonaceae ; Guatteria ; Neotropics ; Bolivia ; Brazil ; Colombia ; Ecuador ; Peru
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 4
    Publication Date: 2007-09-22
    Description: Coupled climate-carbon cycle models suggest that Amazon forests are vulnerable to both long- and short-term droughts, but satellite observations showed a large-scale photosynthetic green-up in intact evergreen forests of the Amazon in response to a short, intense drought in 2005. These findings suggest that Amazon forests, although threatened by human-caused deforestation and fire and possibly by more severe long-term droughts, may be more resilient to climate changes than ecosystem models assume.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Saleska, Scott R -- Didan, Kamel -- Huete, Alfredo R -- da Rocha, Humberto R -- New York, N.Y. -- Science. 2007 Oct 26;318(5850):612. Epub 2007 Sep 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA. saleska@email.arizona.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17885095" target="_blank"〉PubMed〈/a〉
    Keywords: Bolivia ; Brazil ; *Disasters ; *Ecosystem ; Peru ; *Photosynthesis ; Plant Leaves/metabolism ; *Rain ; Seasons ; *Trees/metabolism ; *Tropical Climate
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2006-07-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holden, Constance -- New York, N.Y. -- Science. 2006 Jun 30;312(5782):1867.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16809504" target="_blank"〉PubMed〈/a〉
    Keywords: Anthropology ; Bolivia ; Female ; History, Ancient ; Humans ; *Indians, South American/history ; Life Expectancy ; *Longevity ; Male ; Mortality ; Population Groups/history
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.50 (2005) nr.3 p.555
    Publication Date: 2015-03-06
    Description: We describe Hymenophyllum apteryx M. Kessler & Sundue, H. assurgens M. Kessler & A.R. Sm. and H. latisorum M. Kessler & A.R. Sm. as new to science.
    Keywords: Hymenophyllum ; Bolivia ; Andes
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
    Format: application/pdf
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  • 7
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    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 50 no. 3, pp. 555-560
    Publication Date: 2024-01-12
    Description: We describe Hymenophyllum apteryx M. Kessler & Sundue, H. assurgens M. Kessler & A.R. Sm. and H. latisorum M. Kessler & A.R. Sm. as new to science.
    Keywords: Hymenophyllum ; Bolivia ; Andes
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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