...G. Kwiatek; K. Plenkers; G. Dresen; JAGUARS Research Group Abstract We investigate the source parameters of picoseismic and nanoseismic events ( M w >-4.1) recorded with a high-sensitivity seismic network at the Mponeng gold mine in South Africa to gain new insights into the scaling of small...

...Figure 1. Sketch of the location of the JAGUARS network in the Mponeng gold mine and its surrounding geologic formations. The JAGUARS network is located at 3540 m depth. The sensors are located in boreholes that are shown as bold black lines. The PG dike is shown in gray. The gold reef...

...Figure 1. ▴ A) Mining activity in the vicinity of JAGUARS' network (ellipse N) in map view. The tunnels of 116L at -3,543 m are shown using thick black lines. The nearly vertical dipping pink-green dike is shown in dark gray color. The support pillars of the stope level are marked gray...

...Figure 1. (a) Mining activity in the vicinity of JAGUARS’ network (ellipse N). The tunnels at 3543 m depth are shown using thick black lines. The support pillars are marked light gray and the Greater Green Dike is shown in dark gray. The mined areas (A and B) are surrounded with dashed rectangles...

... detect smaller earthquakes, the joint Japanese–German Underground Acoustic Emission Research in South Africa ( JAGUARS ) group has deployed a highly sensitive and dense network (Fig.  1 ; Nakatani et al. , 2008 ; Plenkers et al. , 2010 ), mainly consisting of piezoelectric-type acoustic emission ( AE...

... and Pb (10–30 m) in the weathered zone ( Greig 1982 ). The Jaguar deposit lies under a sheetwash plain mantled by coarse polymictic lag of vein quartz, ferruginous nodules, pisoliths, and lithic fragments ( Fig. 3 ). A well-developed network of tree-lined drainage channels traverses the area east...

... are mostly illustrated using network graphics of associated codes. Insights into the corporate perspective on REE supply risks reveal a fundamental lack of awareness within the companies at the time of the RE crisis in 2010/2011. Affected companies were hit hard, mostly without prior notice...

.... On the Probability of Detecting Picoseismicity 
 Katrin Plenkers, Danijel Schorlemmer, Grzegorz Kwiatek, and the JAQUARS group Source Parameters of Picoseismicity Recorded at Mponeng Deep Gold Mine, South Africa: Implications for Scaling Relations 
 G. Kwiatek, K. Plenkers, G. Dresen, and the JAGUARS...

..., the 2.698 Ga Bounty Igneous Complex, and the 2.69 Ga Defiance dolerite. In the Gindalbie terrane, the 2.692 Ga Jaguar dolerite is hosted in pillow basalts that are part of the bimodal Teutonic Bore volcanic complex. The remaining sills are hosted in sediments emplaced in a subaqueous setting, largely around...

... Platinum-group element geochemistry of the volcanic rocks associated ore-causative and barren intrusions Zhen Yang and with the Jaguar and Bentley Cu-Zn volcanogenic massive sulfide Xiang-Fei Zhang 223 (VMS) deposits, Western Australia: Implications for the role of chalcophile element fertility on VMS...