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101.
G. Steinmann 《International Journal of Earth Sciences》1912,3(5-6):436-438
102.
G. Steinmann 《International Journal of Earth Sciences》1912,3(5-6):421-423
Ohne Zusammenfassung 相似文献
103.
104.
G. Steinmann 《International Journal of Earth Sciences》1925,16(6):435-468
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105.
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106.
Nicholas Deichmann John Clinton Stephan Husen Benjamin Edwards Florian Haslinger Donat F?h Domenico Giardini Philipp K?stli Urs Kradolfer Stefan Wiemer 《Swiss Journal of Geoscience》2012,105(3):463-476
This report of the Swiss Seismological Service summarizes the seismic activity in Switzerland and surrounding regions during 2011. During this period, 522 earthquakes and 92 quarry blasts were detected and located in the region under consideration. With a total of only 10 events with M L????2.5, the seismic activity in the year 2011 was far below the average over the previous 36?years. Most noteworthy were the earthquake sequence of Sierre (VS) in January, with two events of M L 3.3 and 3.2, the M L 3.3 earthquake at a depth of 31?km below Bregenz, and the M L 3.1 event near Delémont. The two strongest events near Sierre produced shaking of intensity IV. 相似文献
107.
Farhana Huq Philipp Blum Michael A. W. Marks Marcus Nowak Stefan B. Haderlein Peter Grathwohl 《Environmental Earth Sciences》2012,67(2):385-394
Dissolution?Cprecipitation phenomena induced by CO2 injection to Altmark Permian sandstone were observed through laboratory experiments carried out under simulated reservoir conditions (125?°C and 50 bars of pressure). The rock sample was collected from the Altmark gas reservoir, which is being considered for enhanced gas recovery. Two sets of experiments were performed with pulverized rock samples in a closed batch reactor with either pure water (run 1) or 3?M aqueous NaCl solution (run 2) and reacted with injected CO2 for 3, 5, and 9?days. The liquid samples were analyzed by inductively coupled plasma optical emission spectroscopy and total reflection X-ray fluorescence, where the latter proved to be a feasible alternative to conventional analytical techniques, especially since only small sample volumes (about 10???l) are needed. Chemical analysis for both fluids (water and NaCl brine) indicated a significant dissolution of calcite and anhydrite in the solution, which might be a crucial process during CO2 injection. The brine solution enhanced the dissolution of calcite and anhydrite compared to pure water at the beginning of the reaction. Moreover, the progressive higher Si4+/Al3+ molar ratios (in average by a factor of 3) in the brine experiments indicated quartz dissolution. Thermodynamic calculations of mineral saturation indices highlighted the dissolution of the Ca-bearing minerals, which was in agreement with experimental results. Modeling enabled an evaluation of the dissolution processes of minerals in a low-salinity region, yet hindrances to model more saline conditions emphasize the need for further laboratory studies in order to parameterize models for deep aquifer conditions. 相似文献
108.
G. Steinmann 《International Journal of Earth Sciences》1918,8(5-8):255-256
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109.
Steinmann 《International Journal of Earth Sciences》1915,6(4-6):325-325
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110.
Noriko T. Kita Kees C. Welten John W. Valley Michael J. Spicuzza Daisuke Nakashima Travis J. Tenner Takayuki Ushikubo Glenn J. MacPherson Linda Welzenbach Philipp R. Heck Andrew M. Davis Matthias M. M. Meier Rainer Wieler Marc W. Caffee Matthias Laubenstein Kunihiko Nishiizumi 《Meteoritics & planetary science》2013,48(4):641-655
The Mifflin meteorite fell on the night of April 14, 2010, in southwestern Wisconsin. A bright fireball was observed throughout a wide area of the midwestern United States. The petrography, mineral compositions, and oxygen isotope ratios indicate that the meteorite is a L5 chondrite fragmental breccia with light/dark structure. The meteorite shows a low shock stage of S2, although some shock‐melted veins are present. The U,Th‐He age is 0.7 Ga, and the K‐Ar age is 1.8 Ga, indicating that Mifflin might have been heated at the time of the 470 Ma L‐chondrite parent body breakup and that U, Th‐He, and K‐Ar ages were partially reset. The cosmogenic radionuclide data indicate that Mifflin was exposed to cosmic rays while its radius was 30–65 cm. Assuming this exposure geometry, a cosmic‐ray exposure age of 25 ± 3 Ma is calculated from cosmogenic noble gas concentrations. The low 22Ne/21Ne ratio may, however, indicate a two‐stage exposure with a longer first‐stage exposure at high shielding. Mifflin is unusual in having a low radiogenic gas content combined with a low shock stage and no evidence of late stage annealing; this inconsistency remains unexplained. 相似文献