Geologia
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ISSN 0138-0974
e-ISSN: 2353-0782
Issue Date
2008
Volume
T. 34
Number
Nr 2/1
Description
Journal Volume
Geologia
T. 34 (2008)
Projects
Pages
Articles
Sprawozdanie z Polskiej Wyprawy Naukowej Peru 2006
(Wydawnictwa AGH, 2008) Głogowska, Magdalena; Krupa, Joanna
Polish Scientific Expedition Peru 2006 was active from June 25 until August 4. A group of 15 scientific workers from several institutions was led by prof. Andrzej Paulo (AGH), working in the area in previous years also. The institutions involved: AGH University of Science and Technology, Pedagogical University, Jagiellonian University, University of Silesia, Polish Geological Institute, Polish Academy of Science. Research groups composed of two or three persons studied: volcanology, tectonism, geomorphology, geotourism, biology, archeology and natural medicine. The research area included: the Colca Valley from Callalli to Madrigal, Colca Canyon from Cabanaconde to Huambo, the Valley of the Volcanoes, as well as mountain area Orcopampa - Caylloma. The research is aimed to identify and document unique valors of the area which would form future national park and its envelope.
Idea ochrony Kanionu Colca i Doliny Wulkanów
(Wydawnictwa AGH, 2008) Gałaś, Andrzej; Paulo, Andrzej
Development of tourism and related infrastructure in the Rio Colca Canyon region endangers environment of this deepest canyon worldwide. There is urgent need of balancing landuse development by protection of the most valuable areas and proving their importance to the world heritage of nature. Studies performed by the Polish Scientific Expedition to Peru since 2003 are aimed at project of the Canyon Colca and Valley of Volcanoes National Park. This park should protect a unique section of the orogenic belt 100 km long and 1-3 km high, magnificient landscape, sets of active faults, volcanoes, hot springs and specific wildlife including the largest condor habitat in the Andes. New park would strenghten the state protected areas system in the Arequipa department, increase its tourist attractiveness and determine constraints of regional development. Local authorities show great interest in developing the project.
Zarys budowy geologicznej Kordyliery Zachodniej południowego Peru
(Wydawnictwa AGH, 2008) Paulo, Andrzej
Tremendous cross section of lithosphere is exposed in the walls of Rio Colca Canyon 120 km long and 1-3 high. Rio Colca begins at the edge of Altiplano and on the way to Pacific incises deeply into the Western Cordillera, then builds vast dejection cone at its foothills covering metamorphic Arequipa massif. Western Cordillera forms the most elevated horst of this segment of the Andes surmounted by dozens of huge stratovolcanoes. It is largely built of epicontinental Jurassic and Cretaceous formations, volcanic and detritic continental Cenozoic formations, and several Upper Cretaceous - Neogene intrusions. Pre-Pliocene strata are folded. Five compressive phases since Late Creataceous differing by azimuth of fold axes, strong uplift since Late Miocene and relevant fractures filled in part by ore veins and volcanic necks evidence rotation of the regional strain field.
Czwartorzędowa ewolucja Doliny i Kanionu Colca - raport z badań geomorfologicznych wykonanych w roku 2006
(Wydawnictwa AGH, 2008) Kalicki, Tomasz; Kukulak, Józef
Geomorphological mapping was carried out in Colca Valley between Chivay and Madrigal (section of 30 km length) and in Colca Canyon upstream of Canco (three cross sections). Both the valley and the canyon are conditioned by tectonic structures. Three sections with different morphology and processes modelling bottom and sides of the valley could be distinguished in the Colca Valley. A water-course was periodically obstructed by landslides (Colca Valley) or lava flows (Colca Canyon) and dam lakes occurred. The recent Colca Valley is a result of the Middle Pleistocene capture of endorheic system of intermountain grabens by a river which belongs to the Pacific Ocean drainage basin. Lake filling by volcanic ashes occurred in these grabens in the end of Pliocene and the beginning of Quater-nary. Capture happened in tectonically determined place on downthrow at block and fracture line. A lack of rejuvenation of longitudinal profile of the Colca Valley can result from young age of capture, neotectonic movements and also river overloading by colluvia directly upstream of the capture place.
Aktywność uskoków w Dolinie Rio Colca w rejonie Pinchollo-Maca, Andy Środkowe, południowe Peru
(Wydawnictwa AGH, 2008) Żaba, Jerzy; Małolepszy, Zbigniew
Fault/fracture network within Mesozoic and Quaternary formations has been studied in Rio Colca Valley in Pinchollo - Lari - Maca area (Peruvian Andes). The results show structural framework of the Rio Colca Valley based on nearly all tectonic discontinuities observed in the area, mostly on WNW-ESE and NE-SW faults, and on few W-E faults. Displacements of Mesozoic, Miocene and Quaternary formations observed on nearly all faults in the study area provide evidence for recent tectonic activity. Most of the faults in the Mesozoic bedrock continue in Quaternary colluvial deposits. Recent faulting led to development of a system of distinct, primary scarps and land cracks on the surface, which have not been eroded yet.