Abstract. In 2018 and 2019, we performed STIMulation tests with characterising periodic pumping high-resolution seismic monitoring for improving prognosis models real-time TEChnologies the creation of hydraulic conduits in crystalline rocks (STIMTEC). The STIMTEC underground research laboratory is located at 130 m depth Reiche Zeche mine Freiberg, Germany. experiment was designed to investigate...

Based on experiments of C30 concrete with manufactured sand, this paper studied the workability and compressive strength sand 7 different fineness modulus weight fractions (0%, 2%, 4%, 6%, 8%, 10%) stone powder. The results show that powder content in gradation parameters have great effects performance. When is about 2.8, can be improved. As increases, firstly increase then decrease, optimal fr...

Two episodes of late Neoarchean-early Paleoproterozoic and garnet-bearing leucogranite, named the Baotou Jining–Liangcheng leucogranite are recognized from Khondalite Belt in North China Craton. Geochemical studies show that has high Al2O3 content FeOT/MgO ratio, with a large variation CaO K2O/Na2O ratio. Additionally, is enriched light rare earth elements ion lithophile depleted Nb, Ta, P, Ti....

In this study, twenty five partially vitrified rocks and four samples of collected on the top hill called Serravuda (Acri, Calabria, Italy) are analyzed. The goal is to shed light origin these enigmatic materials. analyzed a breccia cemented rock fragments (gneiss, granitoid, amphibolite fragments) which extends for more than 10 m, forming continuous mass along northern north-west border flat h...