Purpose. The present paper aims to develop methodological principles for the selection of effective parameters resource-saving technologies while developing water-bearing titanium-zirconium deposits basing on complex analytical studies. Methods. applies a research methods: – analyze and generalize main differences development technology placer problem statement; technical-economic analysis iden...

CM chondrites are aqueously altered rocks that contain ~9 wt.% H2O (indigenous water) [1] bound in phyllosilicates [2-4]; also present in the matrix are serpentinetochilinite intergrowths (PCP), pentlandite, and Ni-bearing pyrrhotite. The extent of alteration varies from meteorite to meteorite. Some CM chondrites contain well-delineated metallic-Fe-Ni-bearing, olivineand pyroxene-rich chondrule...

The composition of igneous rocks in the continental crust has changed throughout Earth's history. However, the impact of these compositional variations on chemical weathering, and by extension on seawater and atmosphere evolution, is largely unknown. We use the strontium isotope ratio in seawater [(87Sr/86Sr)seawater] as a proxy for chemical weathering, and we test the sensitivity of (87Sr/86Sr...

The applications and studies of gravity anchors in the ocean are becoming more extensive. Most research, however, has been directed toward bearing properties sand. Relatively less attention paid to clay. Clay is widely distributed on seabed. research capacity clay great significance for offshore oil exploitation. Therefore, anchor was investigated by conducting reduced-scale model tests, proces...