We have performed laboratory experiments to determine the impact of earthworms (exotic Eisenia ventripapillata and peregrine Aporrectodea caliginosa) on water-soluble forms ammonium, potassium, sodium, magnesium, calcium in Calcic Chernozem, Greyic Phaeozem, Haplic which are widespread south Western Siberia. The differences between impacts made by two above-mentioned species been estimated acco...

The Sedemte Prestola pluton is an intermediate to acid plutonic body of Variscan age (308.7 ± 9.1 Ma). Despite its small size, several petrographic varieties are present: syenites, quartzsyentes and granites. It composed potassium feldspar, quartz, sodic-calcic amphibole; biotite, when present, often rimmed by amphibole or strongly altered; zircon, titanite, apatite ilmenite the accessory phase...

This research aimed to assess the impact of deep ploughing, with manuring and alone, as well effects different calcium ameliorants on physicochemical properties, fertility, crop productivity calcic chernozems in Northern Steppe Ukraine over a period 7 years. Deep ploughing manure had long-term positive mentioned characteristics that were irrigated brackish water long period. The bulk density de...

The Davo River, an affluent of the Sassandra like other rivers in Côte d’Ivoire, is subject to anthropogenic activities likely deteriorate its quality which could affect use as drinking water and also health aquatic organisms. This study aims at monitoring temporal evolution physico-chemical waters River Dakpadou hydrometric station. Twelve monthly field missions were carried out sample water, ...

mahallat hot springs located in the northeast of mahallat, in central iran. there are 6 main hot springs namely shafa, abejoush, donbeh, soleimanie, hakim and soda. in this research, geology, physico-chemical characteristics and petrography of basement rocks of these hot springs have been investigated. the results show that hot springs have an average temperature of 45°c and acidic to neutral p...

The Piquiri Syenite Massif, southernmost Brazil, is part of the post-collisional magmatism related to the Neoproterozoic Brasiliano-Pan-African Orogenic Cycle. The massif is about 12 km in diameter and is composed of syenites, granites, monzonitic rocks and lamprophyres. Diopside-phlogopite, diopside-biotite-augite-calcic-amphibole, are the main ferro-magnesian paragenesis in the syenitic rocks...

[1] Pyroxenes are useful indicators of igneous processes and may be identified in geologic materials in the laboratory or remotely through the use of spectroscopic analysis. Studies of the thermal infrared (vibrational) spectra of many compositions in the pyroxene solid solution series (quadrilateral orthopyroxene and clinopyroxene, and some nonquadrilateral compositions) have shown that spectr...

Composted municipal solid wastes (CMSW) could potentially be used as a mulching material to control runoff and soil erosion. The effects of mulching with CMSW on water percolation and rate of compost decomposition were studied using laboratory rainfall simulator. Samples of typical loess soil (Calcic Haploxeralf) were packed in boxes and either covered with 0, 100,200 and 300 m' ha-' of CMSW, o...

Mount Bidkhan stratovolcano is located in the central Iranian volcanic belt. It is composed of several types of pyroclastic deposits, lava flows and intrusive bodies. Textural and chemical characteristics of plagioclase phenocrysts from the eruptive products volcanic edifice, record complex magma mixing events over the lifetime of the volcano. Evidences such as xenocrystic high Al+Ti clinopyrox...

Microprobe analyses of Ca-rich pyroxenes crystallized in the melting ranges of a magnesian alkali basalt, a transitional basalt, an olivine tholeiite, a tholeiitic andesite, and an augite leucitite at pressures between 8 and 45 kb show complex variation. Ca-poor pyroxene precipitated only from the alkali basalt at pressures between 14 and 18 kb. Pyroxene falling near the Di-Hed join in the pyro...