Report on a recent deep-seated landslide at G��rov�� Mt., Czech Republic, triggered by a heavy rainfall: The G��rov�� Mt., Outer West Carpathians; Czech Republic

A large deep-seated landslide, triggered by a heavy rainfall, activated early in the morning on May 19, 2010 along the SW slope of Gírová Mt., NE Czech Republic. The landslide occurred within a zone of pre-existing deep-seated gravitational deformation, and it was accompanied with pronounced ground liquefying in the central and lower portion of the sliding mass. The precipitation that triggered the landslide was about 244.6 mm that fell between May 15th and 18th with an average of 61 mm/day. No properties or lives were lost. However, the landslide provided a good case study on triggering factors and process of liquefaction at mountain slopes in the E Czech Republic and adjacent areas.     

Nb-Ta-Ti oxides fractionation in rare-metal granites: Kr��sno-Horn�� Slavkov ore district, Czech Republic

Nb-Ta-Ti-bearing oxide minerals (Nb-Ta-bearing rutile, columbite-group minerals) represent the most common Nb-Ta host in topaz-albite granites and related rocks from the Krásno-Horní Slavkov ore district. Tungsten-bearing columbite-(Fe), W-bearing ixiolite, wodginite and tapiolite-(Fe) are extremely rare in these rocks. Rutile contains significant levels of Ta (up to 37?wt.% Ta₂O₅) and Nb (up to 24?wt.% Nb₂O₅), with Ta/(Ta?+?Nb) ratio ranging from 0.04 to 0.61. Columbite-group minerals are represented mostly by columbite-(Fe) and rarely by columbite-(Mn), with Mn/(Mn?+?Fe) ratio ranging from 0.23 to 0.94. The exceptionally rare Fe-rich, W-bearing ixiolite occurs only as inclusions in Nb-Ta-bearing rutile from quartz-free alkali-feldspar syenites (Vysoky Kámen stock). Wodginite was found only in the topaz-albite microgranite of gneissic breccia matrix that occurs in the upper most part of the Hub topaz-albite granite stock. In wodginite, the Mn/(Mn?+?Fe) ratio is 0.42?C0.51, whereas the coexisting tapiolite-(Fe) has a distinctly lower Mn/(Mn?+?Fe) ratio close to 0.06.     

Rift to post-rift evolution of a ��passive�� continental margin: the Ponta Grossa Arch, SE Brazil

Low-temperature thermochronology was applied at the Brazilian passive continental margin in order to understand and reconstruct the post-rift evolution since the break-up of southwestern Gondwana. Thermochronological data obtained from apatite fission-track analysis of Neoproterozoic metamorphic and Paleozoic to Mesozoic siliciclastic rocks as well as Mesozoic dikes and alkaline intrusions from the Ponta Grossa Arch provided ages between 66.2 (1.3) and 5.9 (0.8) Ma. These data clearly indicate a post-rift reactivation during Late Cretaceous and Paleogene times. Integrating the results of older thermochronological studies, the reactivation of the southeastern Brazilian margin could be described in three main phases related to the rift to post-rift evolution of SE Brazil. Furthermore, the spatial distribution of age data indicates the presence of two age groups: a NE age-group (NE of Curitiba), with ages around 20?Ma and a SW age-group (Curitiba and NW) with ages of around 50?Ma. The change of ages follows the NW?CSE trending S?o Jer?nimo-Curi??va fault zone that can be traced offshore into the southern end of the Santos basin. Within the Santos basin, this lineament ends up to the salt occurrence in the south and seams to play a major role in the structural evolution of the Santos basin and the Rio Grande Rise. Sedimentological studies in the Santos basin evidenced that the transport direction changed in Miocene from WNW to WNW/NNW. During the Oligocene and earlier, the sediments were transported mainly from southeastwards to the direction of the ??Curitiba area?? into the Santos basin. Within the Miocene, an additional transport direction from an area north of Curitiba developed.     

C.I.P.W.标准矿物计算法计算机程序

C.I.P.W.标准矿物计算法,是岩浆岩化学成份计算方法中应用较广的一种。该方法计算的内容比较庞杂,在对大量岩石样品进行计算时,工作量很大,且容易出错。采用便于地质工作者随身携带的袖珍计算机处理,不仅迅速准确,而且方便可靠。     

ГЕОЛОГИЧЕСКИЕ И ГЕОГРАФИЧЕСКИЕ ИССЛЕДОВАНИЯ АКАДЕМИКА В.А.ОБРУЧЕВА В КИТАЕ И НЕКОТОРЫЕ ВОПРОСЫ ГЕОЛОГИИ ЦЕНТРАЛЬНОЙ АЗИИ

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悼念R.J.E.布朗博士

R.J.E.布朗博士是加拿大著名的冻土学家,在国际冻土学界享有盛名,是我国冻土科学工作者的好朋友。两年前的1980年11月,癌症夺去了他的生命,结识他的中国朋友无不感到悲痛,他的逝世对冻土科学的发展是莫大的损失。     

Risk reduction at the ��Last-Mile��: an attempt to turn science into action by the example of Padang, Indonesia

More than ever before, the last decade revealed the immense vulnerability of the world??s cities to natural hazards. Neither the tsunami in the Indian Ocean in 2004, the hurricane Katrina in 2005, the cyclone Nargis in 2008 nor the earthquakes in Sichuan in 2008 or in Haiti 2010 found the people, the city administrations or the national or international organizations well prepared in the advent of anticipated but to a large extent disregarded natural disasters. It is evident that the lack of tailor-made disaster management plans and standard operational procedures are often the crucial point in proper risk reduction approaches. This study presents an approach to transfer knowledge of an extensive multidisciplinary scientific study on risk identification into recommendations for risk reduction strategies. The study has been conducted by means of a combination of experts from different scientific communities coming from civil and coastal engineering, remote sensing, social sciences, evacuation modelling and capacity development. The paper presents the results of this research approach and interweaves key findings with recent experiences from an eyewitness on a previous hazard event. Thus, necessary tsunami hazard and vulnerability information as well as valuable insights into preparedness activities have been derived for initiating updated infrastructural designs and practical recommendations for emergency management as well as strategic spatial planning activities at the local scale. The approach was applied in the context of tsunami early warning and evacuation planning in the coastal city of Padang, Western Sumatra, Republic of Indonesia.